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d809aa23 | 1 | // SPDX-License-Identifier: GPL-2.0 |
b0c632db | 2 | /* |
bb64da9a | 3 | * hosting IBM Z kernel virtual machines (s390x) |
b0c632db | 4 | * |
a37cb07a | 5 | * Copyright IBM Corp. 2008, 2018 |
b0c632db HC |
6 | * |
7 | * Author(s): Carsten Otte <cotte@de.ibm.com> | |
8 | * Christian Borntraeger <borntraeger@de.ibm.com> | |
9 | * Heiko Carstens <heiko.carstens@de.ibm.com> | |
628eb9b8 | 10 | * Christian Ehrhardt <ehrhardt@de.ibm.com> |
15f36ebd | 11 | * Jason J. Herne <jjherne@us.ibm.com> |
b0c632db HC |
12 | */ |
13 | ||
7aedd9d4 MM |
14 | #define KMSG_COMPONENT "kvm-s390" |
15 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
16 | ||
b0c632db HC |
17 | #include <linux/compiler.h> |
18 | #include <linux/err.h> | |
19 | #include <linux/fs.h> | |
ca872302 | 20 | #include <linux/hrtimer.h> |
b0c632db HC |
21 | #include <linux/init.h> |
22 | #include <linux/kvm.h> | |
23 | #include <linux/kvm_host.h> | |
b2d73b2a | 24 | #include <linux/mman.h> |
b0c632db | 25 | #include <linux/module.h> |
d3217967 | 26 | #include <linux/moduleparam.h> |
a374e892 | 27 | #include <linux/random.h> |
b0c632db | 28 | #include <linux/slab.h> |
ba5c1e9b | 29 | #include <linux/timer.h> |
41408c28 | 30 | #include <linux/vmalloc.h> |
15c9705f | 31 | #include <linux/bitmap.h> |
174cd4b1 | 32 | #include <linux/sched/signal.h> |
190df4a2 | 33 | #include <linux/string.h> |
174cd4b1 | 34 | |
cbb870c8 | 35 | #include <asm/asm-offsets.h> |
b0c632db | 36 | #include <asm/lowcore.h> |
fd5ada04 | 37 | #include <asm/stp.h> |
b0c632db | 38 | #include <asm/pgtable.h> |
1e133ab2 | 39 | #include <asm/gmap.h> |
f5daba1d | 40 | #include <asm/nmi.h> |
a0616cde | 41 | #include <asm/switch_to.h> |
6d3da241 | 42 | #include <asm/isc.h> |
1526bf9c | 43 | #include <asm/sclp.h> |
0a763c78 | 44 | #include <asm/cpacf.h> |
221bb8a4 | 45 | #include <asm/timex.h> |
e585b24a | 46 | #include <asm/ap.h> |
8f2abe6a | 47 | #include "kvm-s390.h" |
b0c632db HC |
48 | #include "gaccess.h" |
49 | ||
5786fffa CH |
50 | #define CREATE_TRACE_POINTS |
51 | #include "trace.h" | |
ade38c31 | 52 | #include "trace-s390.h" |
5786fffa | 53 | |
41408c28 | 54 | #define MEM_OP_MAX_SIZE 65536 /* Maximum transfer size for KVM_S390_MEM_OP */ |
816c7667 JF |
55 | #define LOCAL_IRQS 32 |
56 | #define VCPU_IRQS_MAX_BUF (sizeof(struct kvm_s390_irq) * \ | |
57 | (KVM_MAX_VCPUS + LOCAL_IRQS)) | |
41408c28 | 58 | |
b0c632db | 59 | #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU |
ccc40c53 | 60 | #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM |
b0c632db HC |
61 | |
62 | struct kvm_stats_debugfs_item debugfs_entries[] = { | |
63 | { "userspace_handled", VCPU_STAT(exit_userspace) }, | |
0eaeafa1 | 64 | { "exit_null", VCPU_STAT(exit_null) }, |
8f2abe6a CB |
65 | { "exit_validity", VCPU_STAT(exit_validity) }, |
66 | { "exit_stop_request", VCPU_STAT(exit_stop_request) }, | |
67 | { "exit_external_request", VCPU_STAT(exit_external_request) }, | |
a5e0acea | 68 | { "exit_io_request", VCPU_STAT(exit_io_request) }, |
8f2abe6a | 69 | { "exit_external_interrupt", VCPU_STAT(exit_external_interrupt) }, |
ba5c1e9b | 70 | { "exit_instruction", VCPU_STAT(exit_instruction) }, |
9ec6de19 | 71 | { "exit_pei", VCPU_STAT(exit_pei) }, |
ba5c1e9b CO |
72 | { "exit_program_interruption", VCPU_STAT(exit_program_interruption) }, |
73 | { "exit_instr_and_program_int", VCPU_STAT(exit_instr_and_program) }, | |
a011eeb2 | 74 | { "exit_operation_exception", VCPU_STAT(exit_operation_exception) }, |
f7819512 | 75 | { "halt_successful_poll", VCPU_STAT(halt_successful_poll) }, |
62bea5bf | 76 | { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll) }, |
3491caf2 | 77 | { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) }, |
8b905d28 | 78 | { "halt_no_poll_steal", VCPU_STAT(halt_no_poll_steal) }, |
ce2e4f0b | 79 | { "halt_wakeup", VCPU_STAT(halt_wakeup) }, |
f5e10b09 | 80 | { "instruction_lctlg", VCPU_STAT(instruction_lctlg) }, |
ba5c1e9b | 81 | { "instruction_lctl", VCPU_STAT(instruction_lctl) }, |
aba07508 DH |
82 | { "instruction_stctl", VCPU_STAT(instruction_stctl) }, |
83 | { "instruction_stctg", VCPU_STAT(instruction_stctg) }, | |
ccc40c53 CB |
84 | { "deliver_ckc", VCPU_STAT(deliver_ckc) }, |
85 | { "deliver_cputm", VCPU_STAT(deliver_cputm) }, | |
ba5c1e9b | 86 | { "deliver_emergency_signal", VCPU_STAT(deliver_emergency_signal) }, |
7697e71f | 87 | { "deliver_external_call", VCPU_STAT(deliver_external_call) }, |
ba5c1e9b | 88 | { "deliver_service_signal", VCPU_STAT(deliver_service_signal) }, |
ccc40c53 | 89 | { "deliver_virtio", VCPU_STAT(deliver_virtio) }, |
ba5c1e9b CO |
90 | { "deliver_stop_signal", VCPU_STAT(deliver_stop_signal) }, |
91 | { "deliver_prefix_signal", VCPU_STAT(deliver_prefix_signal) }, | |
92 | { "deliver_restart_signal", VCPU_STAT(deliver_restart_signal) }, | |
ccc40c53 CB |
93 | { "deliver_program", VCPU_STAT(deliver_program) }, |
94 | { "deliver_io", VCPU_STAT(deliver_io) }, | |
32de0749 | 95 | { "deliver_machine_check", VCPU_STAT(deliver_machine_check) }, |
ba5c1e9b | 96 | { "exit_wait_state", VCPU_STAT(exit_wait_state) }, |
ccc40c53 CB |
97 | { "inject_ckc", VCPU_STAT(inject_ckc) }, |
98 | { "inject_cputm", VCPU_STAT(inject_cputm) }, | |
99 | { "inject_external_call", VCPU_STAT(inject_external_call) }, | |
100 | { "inject_float_mchk", VM_STAT(inject_float_mchk) }, | |
101 | { "inject_emergency_signal", VCPU_STAT(inject_emergency_signal) }, | |
102 | { "inject_io", VM_STAT(inject_io) }, | |
103 | { "inject_mchk", VCPU_STAT(inject_mchk) }, | |
104 | { "inject_pfault_done", VM_STAT(inject_pfault_done) }, | |
105 | { "inject_program", VCPU_STAT(inject_program) }, | |
106 | { "inject_restart", VCPU_STAT(inject_restart) }, | |
107 | { "inject_service_signal", VM_STAT(inject_service_signal) }, | |
108 | { "inject_set_prefix", VCPU_STAT(inject_set_prefix) }, | |
109 | { "inject_stop_signal", VCPU_STAT(inject_stop_signal) }, | |
110 | { "inject_pfault_init", VCPU_STAT(inject_pfault_init) }, | |
111 | { "inject_virtio", VM_STAT(inject_virtio) }, | |
a37cb07a CB |
112 | { "instruction_epsw", VCPU_STAT(instruction_epsw) }, |
113 | { "instruction_gs", VCPU_STAT(instruction_gs) }, | |
114 | { "instruction_io_other", VCPU_STAT(instruction_io_other) }, | |
115 | { "instruction_lpsw", VCPU_STAT(instruction_lpsw) }, | |
116 | { "instruction_lpswe", VCPU_STAT(instruction_lpswe) }, | |
69d0d3a3 | 117 | { "instruction_pfmf", VCPU_STAT(instruction_pfmf) }, |
a37cb07a | 118 | { "instruction_ptff", VCPU_STAT(instruction_ptff) }, |
453423dc | 119 | { "instruction_stidp", VCPU_STAT(instruction_stidp) }, |
a37cb07a CB |
120 | { "instruction_sck", VCPU_STAT(instruction_sck) }, |
121 | { "instruction_sckpf", VCPU_STAT(instruction_sckpf) }, | |
453423dc CB |
122 | { "instruction_spx", VCPU_STAT(instruction_spx) }, |
123 | { "instruction_stpx", VCPU_STAT(instruction_stpx) }, | |
124 | { "instruction_stap", VCPU_STAT(instruction_stap) }, | |
a37cb07a CB |
125 | { "instruction_iske", VCPU_STAT(instruction_iske) }, |
126 | { "instruction_ri", VCPU_STAT(instruction_ri) }, | |
127 | { "instruction_rrbe", VCPU_STAT(instruction_rrbe) }, | |
128 | { "instruction_sske", VCPU_STAT(instruction_sske) }, | |
8a242234 | 129 | { "instruction_ipte_interlock", VCPU_STAT(instruction_ipte_interlock) }, |
b31288fa | 130 | { "instruction_essa", VCPU_STAT(instruction_essa) }, |
453423dc CB |
131 | { "instruction_stsi", VCPU_STAT(instruction_stsi) }, |
132 | { "instruction_stfl", VCPU_STAT(instruction_stfl) }, | |
a37cb07a CB |
133 | { "instruction_tb", VCPU_STAT(instruction_tb) }, |
134 | { "instruction_tpi", VCPU_STAT(instruction_tpi) }, | |
bb25b9ba | 135 | { "instruction_tprot", VCPU_STAT(instruction_tprot) }, |
a37cb07a | 136 | { "instruction_tsch", VCPU_STAT(instruction_tsch) }, |
95ca2cb5 | 137 | { "instruction_sthyi", VCPU_STAT(instruction_sthyi) }, |
a3508fbe | 138 | { "instruction_sie", VCPU_STAT(instruction_sie) }, |
5288fbf0 | 139 | { "instruction_sigp_sense", VCPU_STAT(instruction_sigp_sense) }, |
bd59d3a4 | 140 | { "instruction_sigp_sense_running", VCPU_STAT(instruction_sigp_sense_running) }, |
7697e71f | 141 | { "instruction_sigp_external_call", VCPU_STAT(instruction_sigp_external_call) }, |
5288fbf0 | 142 | { "instruction_sigp_emergency", VCPU_STAT(instruction_sigp_emergency) }, |
42cb0c9f DH |
143 | { "instruction_sigp_cond_emergency", VCPU_STAT(instruction_sigp_cond_emergency) }, |
144 | { "instruction_sigp_start", VCPU_STAT(instruction_sigp_start) }, | |
5288fbf0 | 145 | { "instruction_sigp_stop", VCPU_STAT(instruction_sigp_stop) }, |
42cb0c9f DH |
146 | { "instruction_sigp_stop_store_status", VCPU_STAT(instruction_sigp_stop_store_status) }, |
147 | { "instruction_sigp_store_status", VCPU_STAT(instruction_sigp_store_status) }, | |
cd7b4b61 | 148 | { "instruction_sigp_store_adtl_status", VCPU_STAT(instruction_sigp_store_adtl_status) }, |
5288fbf0 CB |
149 | { "instruction_sigp_set_arch", VCPU_STAT(instruction_sigp_arch) }, |
150 | { "instruction_sigp_set_prefix", VCPU_STAT(instruction_sigp_prefix) }, | |
151 | { "instruction_sigp_restart", VCPU_STAT(instruction_sigp_restart) }, | |
42cb0c9f DH |
152 | { "instruction_sigp_cpu_reset", VCPU_STAT(instruction_sigp_cpu_reset) }, |
153 | { "instruction_sigp_init_cpu_reset", VCPU_STAT(instruction_sigp_init_cpu_reset) }, | |
154 | { "instruction_sigp_unknown", VCPU_STAT(instruction_sigp_unknown) }, | |
866c138c CB |
155 | { "instruction_diag_10", VCPU_STAT(diagnose_10) }, |
156 | { "instruction_diag_44", VCPU_STAT(diagnose_44) }, | |
157 | { "instruction_diag_9c", VCPU_STAT(diagnose_9c) }, | |
8474e5ca | 158 | { "diag_9c_ignored", VCPU_STAT(diagnose_9c_ignored) }, |
866c138c CB |
159 | { "instruction_diag_258", VCPU_STAT(diagnose_258) }, |
160 | { "instruction_diag_308", VCPU_STAT(diagnose_308) }, | |
161 | { "instruction_diag_500", VCPU_STAT(diagnose_500) }, | |
a37cb07a | 162 | { "instruction_diag_other", VCPU_STAT(diagnose_other) }, |
b0c632db HC |
163 | { NULL } |
164 | }; | |
165 | ||
8fa1696e CW |
166 | struct kvm_s390_tod_clock_ext { |
167 | __u8 epoch_idx; | |
168 | __u64 tod; | |
169 | __u8 reserved[7]; | |
170 | } __packed; | |
171 | ||
a411edf1 DH |
172 | /* allow nested virtualization in KVM (if enabled by user space) */ |
173 | static int nested; | |
174 | module_param(nested, int, S_IRUGO); | |
175 | MODULE_PARM_DESC(nested, "Nested virtualization support"); | |
176 | ||
a4499382 JF |
177 | /* allow 1m huge page guest backing, if !nested */ |
178 | static int hpage; | |
179 | module_param(hpage, int, 0444); | |
180 | MODULE_PARM_DESC(hpage, "1m huge page backing support"); | |
b0c632db | 181 | |
8b905d28 CB |
182 | /* maximum percentage of steal time for polling. >100 is treated like 100 */ |
183 | static u8 halt_poll_max_steal = 10; | |
184 | module_param(halt_poll_max_steal, byte, 0644); | |
b41fb528 | 185 | MODULE_PARM_DESC(halt_poll_max_steal, "Maximum percentage of steal time to allow polling"); |
8b905d28 | 186 | |
c3b9e3e1 CB |
187 | /* |
188 | * For now we handle at most 16 double words as this is what the s390 base | |
189 | * kernel handles and stores in the prefix page. If we ever need to go beyond | |
190 | * this, this requires changes to code, but the external uapi can stay. | |
191 | */ | |
192 | #define SIZE_INTERNAL 16 | |
193 | ||
194 | /* | |
195 | * Base feature mask that defines default mask for facilities. Consists of the | |
196 | * defines in FACILITIES_KVM and the non-hypervisor managed bits. | |
197 | */ | |
198 | static unsigned long kvm_s390_fac_base[SIZE_INTERNAL] = { FACILITIES_KVM }; | |
199 | /* | |
200 | * Extended feature mask. Consists of the defines in FACILITIES_KVM_CPUMODEL | |
201 | * and defines the facilities that can be enabled via a cpu model. | |
202 | */ | |
203 | static unsigned long kvm_s390_fac_ext[SIZE_INTERNAL] = { FACILITIES_KVM_CPUMODEL }; | |
204 | ||
205 | static unsigned long kvm_s390_fac_size(void) | |
78c4b59f | 206 | { |
c3b9e3e1 CB |
207 | BUILD_BUG_ON(SIZE_INTERNAL > S390_ARCH_FAC_MASK_SIZE_U64); |
208 | BUILD_BUG_ON(SIZE_INTERNAL > S390_ARCH_FAC_LIST_SIZE_U64); | |
209 | BUILD_BUG_ON(SIZE_INTERNAL * sizeof(unsigned long) > | |
210 | sizeof(S390_lowcore.stfle_fac_list)); | |
211 | ||
212 | return SIZE_INTERNAL; | |
78c4b59f MM |
213 | } |
214 | ||
15c9705f DH |
215 | /* available cpu features supported by kvm */ |
216 | static DECLARE_BITMAP(kvm_s390_available_cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); | |
0a763c78 DH |
217 | /* available subfunctions indicated via query / "test bit" */ |
218 | static struct kvm_s390_vm_cpu_subfunc kvm_s390_available_subfunc; | |
15c9705f | 219 | |
9d8d5786 | 220 | static struct gmap_notifier gmap_notifier; |
a3508fbe | 221 | static struct gmap_notifier vsie_gmap_notifier; |
78f26131 | 222 | debug_info_t *kvm_s390_dbf; |
9d8d5786 | 223 | |
b0c632db | 224 | /* Section: not file related */ |
13a34e06 | 225 | int kvm_arch_hardware_enable(void) |
b0c632db HC |
226 | { |
227 | /* every s390 is virtualization enabled ;-) */ | |
10474ae8 | 228 | return 0; |
b0c632db HC |
229 | } |
230 | ||
f257d6dc SC |
231 | int kvm_arch_check_processor_compat(void) |
232 | { | |
233 | return 0; | |
234 | } | |
235 | ||
414d3b07 MS |
236 | static void kvm_gmap_notifier(struct gmap *gmap, unsigned long start, |
237 | unsigned long end); | |
2c70fe44 | 238 | |
1575767e DH |
239 | static void kvm_clock_sync_scb(struct kvm_s390_sie_block *scb, u64 delta) |
240 | { | |
241 | u8 delta_idx = 0; | |
242 | ||
243 | /* | |
244 | * The TOD jumps by delta, we have to compensate this by adding | |
245 | * -delta to the epoch. | |
246 | */ | |
247 | delta = -delta; | |
248 | ||
249 | /* sign-extension - we're adding to signed values below */ | |
250 | if ((s64)delta < 0) | |
251 | delta_idx = -1; | |
252 | ||
253 | scb->epoch += delta; | |
254 | if (scb->ecd & ECD_MEF) { | |
255 | scb->epdx += delta_idx; | |
256 | if (scb->epoch < delta) | |
257 | scb->epdx += 1; | |
258 | } | |
259 | } | |
260 | ||
fdf03650 FZ |
261 | /* |
262 | * This callback is executed during stop_machine(). All CPUs are therefore | |
263 | * temporarily stopped. In order not to change guest behavior, we have to | |
264 | * disable preemption whenever we touch the epoch of kvm and the VCPUs, | |
265 | * so a CPU won't be stopped while calculating with the epoch. | |
266 | */ | |
267 | static int kvm_clock_sync(struct notifier_block *notifier, unsigned long val, | |
268 | void *v) | |
269 | { | |
270 | struct kvm *kvm; | |
271 | struct kvm_vcpu *vcpu; | |
272 | int i; | |
273 | unsigned long long *delta = v; | |
274 | ||
275 | list_for_each_entry(kvm, &vm_list, vm_list) { | |
fdf03650 | 276 | kvm_for_each_vcpu(i, vcpu, kvm) { |
1575767e DH |
277 | kvm_clock_sync_scb(vcpu->arch.sie_block, *delta); |
278 | if (i == 0) { | |
279 | kvm->arch.epoch = vcpu->arch.sie_block->epoch; | |
280 | kvm->arch.epdx = vcpu->arch.sie_block->epdx; | |
281 | } | |
db0758b2 DH |
282 | if (vcpu->arch.cputm_enabled) |
283 | vcpu->arch.cputm_start += *delta; | |
91473b48 | 284 | if (vcpu->arch.vsie_block) |
1575767e DH |
285 | kvm_clock_sync_scb(vcpu->arch.vsie_block, |
286 | *delta); | |
fdf03650 FZ |
287 | } |
288 | } | |
289 | return NOTIFY_OK; | |
290 | } | |
291 | ||
292 | static struct notifier_block kvm_clock_notifier = { | |
293 | .notifier_call = kvm_clock_sync, | |
294 | }; | |
295 | ||
b0c632db HC |
296 | int kvm_arch_hardware_setup(void) |
297 | { | |
2c70fe44 | 298 | gmap_notifier.notifier_call = kvm_gmap_notifier; |
b2d73b2a | 299 | gmap_register_pte_notifier(&gmap_notifier); |
a3508fbe DH |
300 | vsie_gmap_notifier.notifier_call = kvm_s390_vsie_gmap_notifier; |
301 | gmap_register_pte_notifier(&vsie_gmap_notifier); | |
fdf03650 FZ |
302 | atomic_notifier_chain_register(&s390_epoch_delta_notifier, |
303 | &kvm_clock_notifier); | |
b0c632db HC |
304 | return 0; |
305 | } | |
306 | ||
307 | void kvm_arch_hardware_unsetup(void) | |
308 | { | |
b2d73b2a | 309 | gmap_unregister_pte_notifier(&gmap_notifier); |
a3508fbe | 310 | gmap_unregister_pte_notifier(&vsie_gmap_notifier); |
fdf03650 FZ |
311 | atomic_notifier_chain_unregister(&s390_epoch_delta_notifier, |
312 | &kvm_clock_notifier); | |
b0c632db HC |
313 | } |
314 | ||
22be5a13 DH |
315 | static void allow_cpu_feat(unsigned long nr) |
316 | { | |
317 | set_bit_inv(nr, kvm_s390_available_cpu_feat); | |
318 | } | |
319 | ||
0a763c78 DH |
320 | static inline int plo_test_bit(unsigned char nr) |
321 | { | |
322 | register unsigned long r0 asm("0") = (unsigned long) nr | 0x100; | |
d051ae53 | 323 | int cc; |
0a763c78 DH |
324 | |
325 | asm volatile( | |
326 | /* Parameter registers are ignored for "test bit" */ | |
327 | " plo 0,0,0,0(0)\n" | |
328 | " ipm %0\n" | |
329 | " srl %0,28\n" | |
330 | : "=d" (cc) | |
331 | : "d" (r0) | |
332 | : "cc"); | |
333 | return cc == 0; | |
334 | } | |
335 | ||
d0dea733 | 336 | static __always_inline void __insn32_query(unsigned int opcode, u8 *query) |
d6681397 CB |
337 | { |
338 | register unsigned long r0 asm("0") = 0; /* query function */ | |
339 | register unsigned long r1 asm("1") = (unsigned long) query; | |
340 | ||
341 | asm volatile( | |
342 | /* Parameter regs are ignored */ | |
343 | " .insn rrf,%[opc] << 16,2,4,6,0\n" | |
b1c41ac3 | 344 | : |
d6681397 | 345 | : "d" (r0), "a" (r1), [opc] "i" (opcode) |
b1c41ac3 | 346 | : "cc", "memory"); |
d6681397 CB |
347 | } |
348 | ||
173aec2d | 349 | #define INSN_SORTL 0xb938 |
4f45b90e | 350 | #define INSN_DFLTCC 0xb939 |
173aec2d | 351 | |
22be5a13 DH |
352 | static void kvm_s390_cpu_feat_init(void) |
353 | { | |
0a763c78 DH |
354 | int i; |
355 | ||
356 | for (i = 0; i < 256; ++i) { | |
357 | if (plo_test_bit(i)) | |
358 | kvm_s390_available_subfunc.plo[i >> 3] |= 0x80 >> (i & 7); | |
359 | } | |
360 | ||
361 | if (test_facility(28)) /* TOD-clock steering */ | |
221bb8a4 LT |
362 | ptff(kvm_s390_available_subfunc.ptff, |
363 | sizeof(kvm_s390_available_subfunc.ptff), | |
364 | PTFF_QAF); | |
0a763c78 DH |
365 | |
366 | if (test_facility(17)) { /* MSA */ | |
69c0e360 MS |
367 | __cpacf_query(CPACF_KMAC, (cpacf_mask_t *) |
368 | kvm_s390_available_subfunc.kmac); | |
369 | __cpacf_query(CPACF_KMC, (cpacf_mask_t *) | |
370 | kvm_s390_available_subfunc.kmc); | |
371 | __cpacf_query(CPACF_KM, (cpacf_mask_t *) | |
372 | kvm_s390_available_subfunc.km); | |
373 | __cpacf_query(CPACF_KIMD, (cpacf_mask_t *) | |
374 | kvm_s390_available_subfunc.kimd); | |
375 | __cpacf_query(CPACF_KLMD, (cpacf_mask_t *) | |
376 | kvm_s390_available_subfunc.klmd); | |
0a763c78 DH |
377 | } |
378 | if (test_facility(76)) /* MSA3 */ | |
69c0e360 MS |
379 | __cpacf_query(CPACF_PCKMO, (cpacf_mask_t *) |
380 | kvm_s390_available_subfunc.pckmo); | |
0a763c78 | 381 | if (test_facility(77)) { /* MSA4 */ |
69c0e360 MS |
382 | __cpacf_query(CPACF_KMCTR, (cpacf_mask_t *) |
383 | kvm_s390_available_subfunc.kmctr); | |
384 | __cpacf_query(CPACF_KMF, (cpacf_mask_t *) | |
385 | kvm_s390_available_subfunc.kmf); | |
386 | __cpacf_query(CPACF_KMO, (cpacf_mask_t *) | |
387 | kvm_s390_available_subfunc.kmo); | |
388 | __cpacf_query(CPACF_PCC, (cpacf_mask_t *) | |
389 | kvm_s390_available_subfunc.pcc); | |
0a763c78 DH |
390 | } |
391 | if (test_facility(57)) /* MSA5 */ | |
985a9d20 | 392 | __cpacf_query(CPACF_PRNO, (cpacf_mask_t *) |
69c0e360 | 393 | kvm_s390_available_subfunc.ppno); |
0a763c78 | 394 | |
e000b8e0 JH |
395 | if (test_facility(146)) /* MSA8 */ |
396 | __cpacf_query(CPACF_KMA, (cpacf_mask_t *) | |
397 | kvm_s390_available_subfunc.kma); | |
398 | ||
13209ad0 CB |
399 | if (test_facility(155)) /* MSA9 */ |
400 | __cpacf_query(CPACF_KDSA, (cpacf_mask_t *) | |
401 | kvm_s390_available_subfunc.kdsa); | |
402 | ||
173aec2d CB |
403 | if (test_facility(150)) /* SORTL */ |
404 | __insn32_query(INSN_SORTL, kvm_s390_available_subfunc.sortl); | |
405 | ||
4f45b90e CB |
406 | if (test_facility(151)) /* DFLTCC */ |
407 | __insn32_query(INSN_DFLTCC, kvm_s390_available_subfunc.dfltcc); | |
408 | ||
22be5a13 DH |
409 | if (MACHINE_HAS_ESOP) |
410 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_ESOP); | |
a3508fbe DH |
411 | /* |
412 | * We need SIE support, ESOP (PROT_READ protection for gmap_shadow), | |
413 | * 64bit SCAO (SCA passthrough) and IDTE (for gmap_shadow unshadowing). | |
414 | */ | |
415 | if (!sclp.has_sief2 || !MACHINE_HAS_ESOP || !sclp.has_64bscao || | |
a411edf1 | 416 | !test_facility(3) || !nested) |
a3508fbe DH |
417 | return; |
418 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_SIEF2); | |
19c439b5 DH |
419 | if (sclp.has_64bscao) |
420 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_64BSCAO); | |
0615a326 DH |
421 | if (sclp.has_siif) |
422 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_SIIF); | |
77d18f6d DH |
423 | if (sclp.has_gpere) |
424 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_GPERE); | |
a1b7b9b2 DH |
425 | if (sclp.has_gsls) |
426 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_GSLS); | |
5630a8e8 DH |
427 | if (sclp.has_ib) |
428 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_IB); | |
13ee3f67 DH |
429 | if (sclp.has_cei) |
430 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_CEI); | |
7fd7f39d DH |
431 | if (sclp.has_ibs) |
432 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_IBS); | |
730cd632 FA |
433 | if (sclp.has_kss) |
434 | allow_cpu_feat(KVM_S390_VM_CPU_FEAT_KSS); | |
5d3876a8 DH |
435 | /* |
436 | * KVM_S390_VM_CPU_FEAT_SKEY: Wrong shadow of PTE.I bits will make | |
437 | * all skey handling functions read/set the skey from the PGSTE | |
438 | * instead of the real storage key. | |
439 | * | |
440 | * KVM_S390_VM_CPU_FEAT_CMMA: Wrong shadow of PTE.I bits will make | |
441 | * pages being detected as preserved although they are resident. | |
442 | * | |
443 | * KVM_S390_VM_CPU_FEAT_PFMFI: Wrong shadow of PTE.I bits will | |
444 | * have the same effect as for KVM_S390_VM_CPU_FEAT_SKEY. | |
445 | * | |
446 | * For KVM_S390_VM_CPU_FEAT_SKEY, KVM_S390_VM_CPU_FEAT_CMMA and | |
447 | * KVM_S390_VM_CPU_FEAT_PFMFI, all PTE.I and PGSTE bits have to be | |
448 | * correctly shadowed. We can do that for the PGSTE but not for PTE.I. | |
449 | * | |
450 | * KVM_S390_VM_CPU_FEAT_SIGPIF: Wrong SCB addresses in the SCA. We | |
451 | * cannot easily shadow the SCA because of the ipte lock. | |
452 | */ | |
22be5a13 DH |
453 | } |
454 | ||
b0c632db HC |
455 | int kvm_arch_init(void *opaque) |
456 | { | |
f76f6371 | 457 | int rc = -ENOMEM; |
308c3e66 | 458 | |
78f26131 CB |
459 | kvm_s390_dbf = debug_register("kvm-trace", 32, 1, 7 * sizeof(long)); |
460 | if (!kvm_s390_dbf) | |
461 | return -ENOMEM; | |
462 | ||
f76f6371 JF |
463 | if (debug_register_view(kvm_s390_dbf, &debug_sprintf_view)) |
464 | goto out; | |
78f26131 | 465 | |
22be5a13 DH |
466 | kvm_s390_cpu_feat_init(); |
467 | ||
84877d93 | 468 | /* Register floating interrupt controller interface. */ |
308c3e66 MM |
469 | rc = kvm_register_device_ops(&kvm_flic_ops, KVM_DEV_TYPE_FLIC); |
470 | if (rc) { | |
8d43d570 | 471 | pr_err("A FLIC registration call failed with rc=%d\n", rc); |
f76f6371 | 472 | goto out; |
308c3e66 | 473 | } |
b1d1e76e MM |
474 | |
475 | rc = kvm_s390_gib_init(GAL_ISC); | |
476 | if (rc) | |
f76f6371 | 477 | goto out; |
b1d1e76e | 478 | |
308c3e66 MM |
479 | return 0; |
480 | ||
f76f6371 JF |
481 | out: |
482 | kvm_arch_exit(); | |
308c3e66 | 483 | return rc; |
b0c632db HC |
484 | } |
485 | ||
78f26131 CB |
486 | void kvm_arch_exit(void) |
487 | { | |
1282c21e | 488 | kvm_s390_gib_destroy(); |
78f26131 CB |
489 | debug_unregister(kvm_s390_dbf); |
490 | } | |
491 | ||
b0c632db HC |
492 | /* Section: device related */ |
493 | long kvm_arch_dev_ioctl(struct file *filp, | |
494 | unsigned int ioctl, unsigned long arg) | |
495 | { | |
496 | if (ioctl == KVM_S390_ENABLE_SIE) | |
497 | return s390_enable_sie(); | |
498 | return -EINVAL; | |
499 | } | |
500 | ||
784aa3d7 | 501 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) |
b0c632db | 502 | { |
d7b0b5eb CO |
503 | int r; |
504 | ||
2bd0ac4e | 505 | switch (ext) { |
d7b0b5eb | 506 | case KVM_CAP_S390_PSW: |
b6cf8788 | 507 | case KVM_CAP_S390_GMAP: |
52e16b18 | 508 | case KVM_CAP_SYNC_MMU: |
1efd0f59 CO |
509 | #ifdef CONFIG_KVM_S390_UCONTROL |
510 | case KVM_CAP_S390_UCONTROL: | |
511 | #endif | |
3c038e6b | 512 | case KVM_CAP_ASYNC_PF: |
60b413c9 | 513 | case KVM_CAP_SYNC_REGS: |
14eebd91 | 514 | case KVM_CAP_ONE_REG: |
d6712df9 | 515 | case KVM_CAP_ENABLE_CAP: |
fa6b7fe9 | 516 | case KVM_CAP_S390_CSS_SUPPORT: |
10ccaa1e | 517 | case KVM_CAP_IOEVENTFD: |
c05c4186 | 518 | case KVM_CAP_DEVICE_CTRL: |
78599d90 | 519 | case KVM_CAP_S390_IRQCHIP: |
f2061656 | 520 | case KVM_CAP_VM_ATTRIBUTES: |
6352e4d2 | 521 | case KVM_CAP_MP_STATE: |
460df4c1 | 522 | case KVM_CAP_IMMEDIATE_EXIT: |
47b43c52 | 523 | case KVM_CAP_S390_INJECT_IRQ: |
2444b352 | 524 | case KVM_CAP_S390_USER_SIGP: |
e44fc8c9 | 525 | case KVM_CAP_S390_USER_STSI: |
30ee2a98 | 526 | case KVM_CAP_S390_SKEYS: |
816c7667 | 527 | case KVM_CAP_S390_IRQ_STATE: |
6502a34c | 528 | case KVM_CAP_S390_USER_INSTR0: |
4036e387 | 529 | case KVM_CAP_S390_CMMA_MIGRATION: |
47a4693e | 530 | case KVM_CAP_S390_AIS: |
da9a1446 | 531 | case KVM_CAP_S390_AIS_MIGRATION: |
7de3f142 | 532 | case KVM_CAP_S390_VCPU_RESETS: |
d7b0b5eb CO |
533 | r = 1; |
534 | break; | |
a4499382 JF |
535 | case KVM_CAP_S390_HPAGE_1M: |
536 | r = 0; | |
40ebdb8e | 537 | if (hpage && !kvm_is_ucontrol(kvm)) |
a4499382 JF |
538 | r = 1; |
539 | break; | |
41408c28 TH |
540 | case KVM_CAP_S390_MEM_OP: |
541 | r = MEM_OP_MAX_SIZE; | |
542 | break; | |
e726b1bd CB |
543 | case KVM_CAP_NR_VCPUS: |
544 | case KVM_CAP_MAX_VCPUS: | |
a86cb413 | 545 | case KVM_CAP_MAX_VCPU_ID: |
76a6dd72 | 546 | r = KVM_S390_BSCA_CPU_SLOTS; |
a6940674 DH |
547 | if (!kvm_s390_use_sca_entries()) |
548 | r = KVM_MAX_VCPUS; | |
549 | else if (sclp.has_esca && sclp.has_64bscao) | |
76a6dd72 | 550 | r = KVM_S390_ESCA_CPU_SLOTS; |
e726b1bd | 551 | break; |
1526bf9c | 552 | case KVM_CAP_S390_COW: |
abf09bed | 553 | r = MACHINE_HAS_ESOP; |
1526bf9c | 554 | break; |
68c55750 EF |
555 | case KVM_CAP_S390_VECTOR_REGISTERS: |
556 | r = MACHINE_HAS_VX; | |
557 | break; | |
c6e5f166 FZ |
558 | case KVM_CAP_S390_RI: |
559 | r = test_facility(64); | |
560 | break; | |
4e0b1ab7 FZ |
561 | case KVM_CAP_S390_GS: |
562 | r = test_facility(133); | |
563 | break; | |
35b3fde6 CB |
564 | case KVM_CAP_S390_BPB: |
565 | r = test_facility(82); | |
566 | break; | |
2bd0ac4e | 567 | default: |
d7b0b5eb | 568 | r = 0; |
2bd0ac4e | 569 | } |
d7b0b5eb | 570 | return r; |
b0c632db HC |
571 | } |
572 | ||
15f36ebd | 573 | static void kvm_s390_sync_dirty_log(struct kvm *kvm, |
0959e168 | 574 | struct kvm_memory_slot *memslot) |
15f36ebd | 575 | { |
0959e168 | 576 | int i; |
15f36ebd | 577 | gfn_t cur_gfn, last_gfn; |
0959e168 | 578 | unsigned long gaddr, vmaddr; |
15f36ebd | 579 | struct gmap *gmap = kvm->arch.gmap; |
0959e168 | 580 | DECLARE_BITMAP(bitmap, _PAGE_ENTRIES); |
15f36ebd | 581 | |
0959e168 JF |
582 | /* Loop over all guest segments */ |
583 | cur_gfn = memslot->base_gfn; | |
15f36ebd | 584 | last_gfn = memslot->base_gfn + memslot->npages; |
0959e168 JF |
585 | for (; cur_gfn <= last_gfn; cur_gfn += _PAGE_ENTRIES) { |
586 | gaddr = gfn_to_gpa(cur_gfn); | |
587 | vmaddr = gfn_to_hva_memslot(memslot, cur_gfn); | |
588 | if (kvm_is_error_hva(vmaddr)) | |
589 | continue; | |
590 | ||
591 | bitmap_zero(bitmap, _PAGE_ENTRIES); | |
592 | gmap_sync_dirty_log_pmd(gmap, bitmap, gaddr, vmaddr); | |
593 | for (i = 0; i < _PAGE_ENTRIES; i++) { | |
594 | if (test_bit(i, bitmap)) | |
595 | mark_page_dirty(kvm, cur_gfn + i); | |
596 | } | |
15f36ebd | 597 | |
1763f8d0 CB |
598 | if (fatal_signal_pending(current)) |
599 | return; | |
70c88a00 | 600 | cond_resched(); |
15f36ebd | 601 | } |
15f36ebd JH |
602 | } |
603 | ||
b0c632db | 604 | /* Section: vm related */ |
a6e2f683 ED |
605 | static void sca_del_vcpu(struct kvm_vcpu *vcpu); |
606 | ||
b0c632db HC |
607 | /* |
608 | * Get (and clear) the dirty memory log for a memory slot. | |
609 | */ | |
610 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
611 | struct kvm_dirty_log *log) | |
612 | { | |
15f36ebd JH |
613 | int r; |
614 | unsigned long n; | |
9f6b8029 | 615 | struct kvm_memslots *slots; |
15f36ebd JH |
616 | struct kvm_memory_slot *memslot; |
617 | int is_dirty = 0; | |
618 | ||
e1e8a962 JF |
619 | if (kvm_is_ucontrol(kvm)) |
620 | return -EINVAL; | |
621 | ||
15f36ebd JH |
622 | mutex_lock(&kvm->slots_lock); |
623 | ||
624 | r = -EINVAL; | |
625 | if (log->slot >= KVM_USER_MEM_SLOTS) | |
626 | goto out; | |
627 | ||
9f6b8029 PB |
628 | slots = kvm_memslots(kvm); |
629 | memslot = id_to_memslot(slots, log->slot); | |
15f36ebd JH |
630 | r = -ENOENT; |
631 | if (!memslot->dirty_bitmap) | |
632 | goto out; | |
633 | ||
634 | kvm_s390_sync_dirty_log(kvm, memslot); | |
635 | r = kvm_get_dirty_log(kvm, log, &is_dirty); | |
636 | if (r) | |
637 | goto out; | |
638 | ||
639 | /* Clear the dirty log */ | |
640 | if (is_dirty) { | |
641 | n = kvm_dirty_bitmap_bytes(memslot); | |
642 | memset(memslot->dirty_bitmap, 0, n); | |
643 | } | |
644 | r = 0; | |
645 | out: | |
646 | mutex_unlock(&kvm->slots_lock); | |
647 | return r; | |
b0c632db HC |
648 | } |
649 | ||
6502a34c DH |
650 | static void icpt_operexc_on_all_vcpus(struct kvm *kvm) |
651 | { | |
652 | unsigned int i; | |
653 | struct kvm_vcpu *vcpu; | |
654 | ||
655 | kvm_for_each_vcpu(i, vcpu, kvm) { | |
656 | kvm_s390_sync_request(KVM_REQ_ICPT_OPEREXC, vcpu); | |
657 | } | |
658 | } | |
659 | ||
e5d83c74 | 660 | int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) |
d938dc55 CH |
661 | { |
662 | int r; | |
663 | ||
664 | if (cap->flags) | |
665 | return -EINVAL; | |
666 | ||
667 | switch (cap->cap) { | |
84223598 | 668 | case KVM_CAP_S390_IRQCHIP: |
c92ea7b9 | 669 | VM_EVENT(kvm, 3, "%s", "ENABLE: CAP_S390_IRQCHIP"); |
84223598 CH |
670 | kvm->arch.use_irqchip = 1; |
671 | r = 0; | |
672 | break; | |
2444b352 | 673 | case KVM_CAP_S390_USER_SIGP: |
c92ea7b9 | 674 | VM_EVENT(kvm, 3, "%s", "ENABLE: CAP_S390_USER_SIGP"); |
2444b352 DH |
675 | kvm->arch.user_sigp = 1; |
676 | r = 0; | |
677 | break; | |
68c55750 | 678 | case KVM_CAP_S390_VECTOR_REGISTERS: |
5967c17b | 679 | mutex_lock(&kvm->lock); |
a03825bb | 680 | if (kvm->created_vcpus) { |
5967c17b DH |
681 | r = -EBUSY; |
682 | } else if (MACHINE_HAS_VX) { | |
c54f0d6a DH |
683 | set_kvm_facility(kvm->arch.model.fac_mask, 129); |
684 | set_kvm_facility(kvm->arch.model.fac_list, 129); | |
2f87d942 GH |
685 | if (test_facility(134)) { |
686 | set_kvm_facility(kvm->arch.model.fac_mask, 134); | |
687 | set_kvm_facility(kvm->arch.model.fac_list, 134); | |
688 | } | |
53743aa7 MS |
689 | if (test_facility(135)) { |
690 | set_kvm_facility(kvm->arch.model.fac_mask, 135); | |
691 | set_kvm_facility(kvm->arch.model.fac_list, 135); | |
692 | } | |
7832e91c CB |
693 | if (test_facility(148)) { |
694 | set_kvm_facility(kvm->arch.model.fac_mask, 148); | |
695 | set_kvm_facility(kvm->arch.model.fac_list, 148); | |
696 | } | |
d5cb6ab1 CB |
697 | if (test_facility(152)) { |
698 | set_kvm_facility(kvm->arch.model.fac_mask, 152); | |
699 | set_kvm_facility(kvm->arch.model.fac_list, 152); | |
700 | } | |
18280d8b MM |
701 | r = 0; |
702 | } else | |
703 | r = -EINVAL; | |
5967c17b | 704 | mutex_unlock(&kvm->lock); |
c92ea7b9 CB |
705 | VM_EVENT(kvm, 3, "ENABLE: CAP_S390_VECTOR_REGISTERS %s", |
706 | r ? "(not available)" : "(success)"); | |
68c55750 | 707 | break; |
c6e5f166 FZ |
708 | case KVM_CAP_S390_RI: |
709 | r = -EINVAL; | |
710 | mutex_lock(&kvm->lock); | |
a03825bb | 711 | if (kvm->created_vcpus) { |
c6e5f166 FZ |
712 | r = -EBUSY; |
713 | } else if (test_facility(64)) { | |
c54f0d6a DH |
714 | set_kvm_facility(kvm->arch.model.fac_mask, 64); |
715 | set_kvm_facility(kvm->arch.model.fac_list, 64); | |
c6e5f166 FZ |
716 | r = 0; |
717 | } | |
718 | mutex_unlock(&kvm->lock); | |
719 | VM_EVENT(kvm, 3, "ENABLE: CAP_S390_RI %s", | |
720 | r ? "(not available)" : "(success)"); | |
721 | break; | |
47a4693e YMZ |
722 | case KVM_CAP_S390_AIS: |
723 | mutex_lock(&kvm->lock); | |
724 | if (kvm->created_vcpus) { | |
725 | r = -EBUSY; | |
726 | } else { | |
727 | set_kvm_facility(kvm->arch.model.fac_mask, 72); | |
728 | set_kvm_facility(kvm->arch.model.fac_list, 72); | |
47a4693e YMZ |
729 | r = 0; |
730 | } | |
731 | mutex_unlock(&kvm->lock); | |
732 | VM_EVENT(kvm, 3, "ENABLE: AIS %s", | |
733 | r ? "(not available)" : "(success)"); | |
734 | break; | |
4e0b1ab7 FZ |
735 | case KVM_CAP_S390_GS: |
736 | r = -EINVAL; | |
737 | mutex_lock(&kvm->lock); | |
241e3ec0 | 738 | if (kvm->created_vcpus) { |
4e0b1ab7 FZ |
739 | r = -EBUSY; |
740 | } else if (test_facility(133)) { | |
741 | set_kvm_facility(kvm->arch.model.fac_mask, 133); | |
742 | set_kvm_facility(kvm->arch.model.fac_list, 133); | |
743 | r = 0; | |
744 | } | |
745 | mutex_unlock(&kvm->lock); | |
746 | VM_EVENT(kvm, 3, "ENABLE: CAP_S390_GS %s", | |
747 | r ? "(not available)" : "(success)"); | |
748 | break; | |
a4499382 JF |
749 | case KVM_CAP_S390_HPAGE_1M: |
750 | mutex_lock(&kvm->lock); | |
751 | if (kvm->created_vcpus) | |
752 | r = -EBUSY; | |
40ebdb8e | 753 | else if (!hpage || kvm->arch.use_cmma || kvm_is_ucontrol(kvm)) |
a4499382 JF |
754 | r = -EINVAL; |
755 | else { | |
756 | r = 0; | |
df88f318 | 757 | down_write(&kvm->mm->mmap_sem); |
a4499382 | 758 | kvm->mm->context.allow_gmap_hpage_1m = 1; |
df88f318 | 759 | up_write(&kvm->mm->mmap_sem); |
a4499382 JF |
760 | /* |
761 | * We might have to create fake 4k page | |
762 | * tables. To avoid that the hardware works on | |
763 | * stale PGSTEs, we emulate these instructions. | |
764 | */ | |
765 | kvm->arch.use_skf = 0; | |
766 | kvm->arch.use_pfmfi = 0; | |
767 | } | |
768 | mutex_unlock(&kvm->lock); | |
769 | VM_EVENT(kvm, 3, "ENABLE: CAP_S390_HPAGE %s", | |
770 | r ? "(not available)" : "(success)"); | |
771 | break; | |
e44fc8c9 | 772 | case KVM_CAP_S390_USER_STSI: |
c92ea7b9 | 773 | VM_EVENT(kvm, 3, "%s", "ENABLE: CAP_S390_USER_STSI"); |
e44fc8c9 ET |
774 | kvm->arch.user_stsi = 1; |
775 | r = 0; | |
776 | break; | |
6502a34c DH |
777 | case KVM_CAP_S390_USER_INSTR0: |
778 | VM_EVENT(kvm, 3, "%s", "ENABLE: CAP_S390_USER_INSTR0"); | |
779 | kvm->arch.user_instr0 = 1; | |
780 | icpt_operexc_on_all_vcpus(kvm); | |
781 | r = 0; | |
782 | break; | |
d938dc55 CH |
783 | default: |
784 | r = -EINVAL; | |
785 | break; | |
786 | } | |
787 | return r; | |
788 | } | |
789 | ||
8c0a7ce6 DD |
790 | static int kvm_s390_get_mem_control(struct kvm *kvm, struct kvm_device_attr *attr) |
791 | { | |
792 | int ret; | |
793 | ||
794 | switch (attr->attr) { | |
795 | case KVM_S390_VM_MEM_LIMIT_SIZE: | |
796 | ret = 0; | |
c92ea7b9 | 797 | VM_EVENT(kvm, 3, "QUERY: max guest memory: %lu bytes", |
a3a92c31 DD |
798 | kvm->arch.mem_limit); |
799 | if (put_user(kvm->arch.mem_limit, (u64 __user *)attr->addr)) | |
8c0a7ce6 DD |
800 | ret = -EFAULT; |
801 | break; | |
802 | default: | |
803 | ret = -ENXIO; | |
804 | break; | |
805 | } | |
806 | return ret; | |
807 | } | |
808 | ||
809 | static int kvm_s390_set_mem_control(struct kvm *kvm, struct kvm_device_attr *attr) | |
4f718eab DD |
810 | { |
811 | int ret; | |
812 | unsigned int idx; | |
813 | switch (attr->attr) { | |
814 | case KVM_S390_VM_MEM_ENABLE_CMMA: | |
f9cbd9b0 | 815 | ret = -ENXIO; |
c24cc9c8 | 816 | if (!sclp.has_cmma) |
e6db1d61 DD |
817 | break; |
818 | ||
c92ea7b9 | 819 | VM_EVENT(kvm, 3, "%s", "ENABLE: CMMA support"); |
4f718eab | 820 | mutex_lock(&kvm->lock); |
a4499382 JF |
821 | if (kvm->created_vcpus) |
822 | ret = -EBUSY; | |
823 | else if (kvm->mm->context.allow_gmap_hpage_1m) | |
824 | ret = -EINVAL; | |
825 | else { | |
4f718eab | 826 | kvm->arch.use_cmma = 1; |
c9f0a2b8 JF |
827 | /* Not compatible with cmma. */ |
828 | kvm->arch.use_pfmfi = 0; | |
4f718eab DD |
829 | ret = 0; |
830 | } | |
831 | mutex_unlock(&kvm->lock); | |
832 | break; | |
833 | case KVM_S390_VM_MEM_CLR_CMMA: | |
f9cbd9b0 DH |
834 | ret = -ENXIO; |
835 | if (!sclp.has_cmma) | |
836 | break; | |
c3489155 DD |
837 | ret = -EINVAL; |
838 | if (!kvm->arch.use_cmma) | |
839 | break; | |
840 | ||
c92ea7b9 | 841 | VM_EVENT(kvm, 3, "%s", "RESET: CMMA states"); |
4f718eab DD |
842 | mutex_lock(&kvm->lock); |
843 | idx = srcu_read_lock(&kvm->srcu); | |
a13cff31 | 844 | s390_reset_cmma(kvm->arch.gmap->mm); |
4f718eab DD |
845 | srcu_read_unlock(&kvm->srcu, idx); |
846 | mutex_unlock(&kvm->lock); | |
847 | ret = 0; | |
848 | break; | |
8c0a7ce6 DD |
849 | case KVM_S390_VM_MEM_LIMIT_SIZE: { |
850 | unsigned long new_limit; | |
851 | ||
852 | if (kvm_is_ucontrol(kvm)) | |
853 | return -EINVAL; | |
854 | ||
855 | if (get_user(new_limit, (u64 __user *)attr->addr)) | |
856 | return -EFAULT; | |
857 | ||
a3a92c31 DD |
858 | if (kvm->arch.mem_limit != KVM_S390_NO_MEM_LIMIT && |
859 | new_limit > kvm->arch.mem_limit) | |
8c0a7ce6 DD |
860 | return -E2BIG; |
861 | ||
a3a92c31 DD |
862 | if (!new_limit) |
863 | return -EINVAL; | |
864 | ||
6ea427bb | 865 | /* gmap_create takes last usable address */ |
a3a92c31 DD |
866 | if (new_limit != KVM_S390_NO_MEM_LIMIT) |
867 | new_limit -= 1; | |
868 | ||
8c0a7ce6 DD |
869 | ret = -EBUSY; |
870 | mutex_lock(&kvm->lock); | |
a03825bb | 871 | if (!kvm->created_vcpus) { |
6ea427bb MS |
872 | /* gmap_create will round the limit up */ |
873 | struct gmap *new = gmap_create(current->mm, new_limit); | |
8c0a7ce6 DD |
874 | |
875 | if (!new) { | |
876 | ret = -ENOMEM; | |
877 | } else { | |
6ea427bb | 878 | gmap_remove(kvm->arch.gmap); |
8c0a7ce6 DD |
879 | new->private = kvm; |
880 | kvm->arch.gmap = new; | |
881 | ret = 0; | |
882 | } | |
883 | } | |
884 | mutex_unlock(&kvm->lock); | |
a3a92c31 DD |
885 | VM_EVENT(kvm, 3, "SET: max guest address: %lu", new_limit); |
886 | VM_EVENT(kvm, 3, "New guest asce: 0x%pK", | |
887 | (void *) kvm->arch.gmap->asce); | |
8c0a7ce6 DD |
888 | break; |
889 | } | |
4f718eab DD |
890 | default: |
891 | ret = -ENXIO; | |
892 | break; | |
893 | } | |
894 | return ret; | |
895 | } | |
896 | ||
a374e892 TK |
897 | static void kvm_s390_vcpu_crypto_setup(struct kvm_vcpu *vcpu); |
898 | ||
20c922f0 | 899 | void kvm_s390_vcpu_crypto_reset_all(struct kvm *kvm) |
a374e892 TK |
900 | { |
901 | struct kvm_vcpu *vcpu; | |
902 | int i; | |
903 | ||
20c922f0 TK |
904 | kvm_s390_vcpu_block_all(kvm); |
905 | ||
3194cdb7 | 906 | kvm_for_each_vcpu(i, vcpu, kvm) { |
20c922f0 | 907 | kvm_s390_vcpu_crypto_setup(vcpu); |
3194cdb7 DH |
908 | /* recreate the shadow crycb by leaving the VSIE handler */ |
909 | kvm_s390_sync_request(KVM_REQ_VSIE_RESTART, vcpu); | |
910 | } | |
20c922f0 TK |
911 | |
912 | kvm_s390_vcpu_unblock_all(kvm); | |
913 | } | |
914 | ||
915 | static int kvm_s390_vm_set_crypto(struct kvm *kvm, struct kvm_device_attr *attr) | |
916 | { | |
a374e892 TK |
917 | mutex_lock(&kvm->lock); |
918 | switch (attr->attr) { | |
919 | case KVM_S390_VM_CRYPTO_ENABLE_AES_KW: | |
8e41bd54 CB |
920 | if (!test_kvm_facility(kvm, 76)) { |
921 | mutex_unlock(&kvm->lock); | |
37940fb0 | 922 | return -EINVAL; |
8e41bd54 | 923 | } |
a374e892 TK |
924 | get_random_bytes( |
925 | kvm->arch.crypto.crycb->aes_wrapping_key_mask, | |
926 | sizeof(kvm->arch.crypto.crycb->aes_wrapping_key_mask)); | |
927 | kvm->arch.crypto.aes_kw = 1; | |
c92ea7b9 | 928 | VM_EVENT(kvm, 3, "%s", "ENABLE: AES keywrapping support"); |
a374e892 TK |
929 | break; |
930 | case KVM_S390_VM_CRYPTO_ENABLE_DEA_KW: | |
8e41bd54 CB |
931 | if (!test_kvm_facility(kvm, 76)) { |
932 | mutex_unlock(&kvm->lock); | |
37940fb0 | 933 | return -EINVAL; |
8e41bd54 | 934 | } |
a374e892 TK |
935 | get_random_bytes( |
936 | kvm->arch.crypto.crycb->dea_wrapping_key_mask, | |
937 | sizeof(kvm->arch.crypto.crycb->dea_wrapping_key_mask)); | |
938 | kvm->arch.crypto.dea_kw = 1; | |
c92ea7b9 | 939 | VM_EVENT(kvm, 3, "%s", "ENABLE: DEA keywrapping support"); |
a374e892 TK |
940 | break; |
941 | case KVM_S390_VM_CRYPTO_DISABLE_AES_KW: | |
8e41bd54 CB |
942 | if (!test_kvm_facility(kvm, 76)) { |
943 | mutex_unlock(&kvm->lock); | |
37940fb0 | 944 | return -EINVAL; |
8e41bd54 | 945 | } |
a374e892 TK |
946 | kvm->arch.crypto.aes_kw = 0; |
947 | memset(kvm->arch.crypto.crycb->aes_wrapping_key_mask, 0, | |
948 | sizeof(kvm->arch.crypto.crycb->aes_wrapping_key_mask)); | |
c92ea7b9 | 949 | VM_EVENT(kvm, 3, "%s", "DISABLE: AES keywrapping support"); |
a374e892 TK |
950 | break; |
951 | case KVM_S390_VM_CRYPTO_DISABLE_DEA_KW: | |
8e41bd54 CB |
952 | if (!test_kvm_facility(kvm, 76)) { |
953 | mutex_unlock(&kvm->lock); | |
37940fb0 | 954 | return -EINVAL; |
8e41bd54 | 955 | } |
a374e892 TK |
956 | kvm->arch.crypto.dea_kw = 0; |
957 | memset(kvm->arch.crypto.crycb->dea_wrapping_key_mask, 0, | |
958 | sizeof(kvm->arch.crypto.crycb->dea_wrapping_key_mask)); | |
c92ea7b9 | 959 | VM_EVENT(kvm, 3, "%s", "DISABLE: DEA keywrapping support"); |
a374e892 | 960 | break; |
37940fb0 TK |
961 | case KVM_S390_VM_CRYPTO_ENABLE_APIE: |
962 | if (!ap_instructions_available()) { | |
963 | mutex_unlock(&kvm->lock); | |
964 | return -EOPNOTSUPP; | |
965 | } | |
966 | kvm->arch.crypto.apie = 1; | |
967 | break; | |
968 | case KVM_S390_VM_CRYPTO_DISABLE_APIE: | |
969 | if (!ap_instructions_available()) { | |
970 | mutex_unlock(&kvm->lock); | |
971 | return -EOPNOTSUPP; | |
972 | } | |
973 | kvm->arch.crypto.apie = 0; | |
974 | break; | |
a374e892 TK |
975 | default: |
976 | mutex_unlock(&kvm->lock); | |
977 | return -ENXIO; | |
978 | } | |
979 | ||
20c922f0 | 980 | kvm_s390_vcpu_crypto_reset_all(kvm); |
a374e892 TK |
981 | mutex_unlock(&kvm->lock); |
982 | return 0; | |
983 | } | |
984 | ||
190df4a2 CI |
985 | static void kvm_s390_sync_request_broadcast(struct kvm *kvm, int req) |
986 | { | |
987 | int cx; | |
988 | struct kvm_vcpu *vcpu; | |
989 | ||
990 | kvm_for_each_vcpu(cx, vcpu, kvm) | |
991 | kvm_s390_sync_request(req, vcpu); | |
992 | } | |
993 | ||
994 | /* | |
995 | * Must be called with kvm->srcu held to avoid races on memslots, and with | |
1de1ea7e | 996 | * kvm->slots_lock to avoid races with ourselves and kvm_s390_vm_stop_migration. |
190df4a2 CI |
997 | */ |
998 | static int kvm_s390_vm_start_migration(struct kvm *kvm) | |
999 | { | |
190df4a2 | 1000 | struct kvm_memory_slot *ms; |
190df4a2 | 1001 | struct kvm_memslots *slots; |
afdad616 | 1002 | unsigned long ram_pages = 0; |
190df4a2 CI |
1003 | int slotnr; |
1004 | ||
1005 | /* migration mode already enabled */ | |
afdad616 | 1006 | if (kvm->arch.migration_mode) |
190df4a2 | 1007 | return 0; |
190df4a2 CI |
1008 | slots = kvm_memslots(kvm); |
1009 | if (!slots || !slots->used_slots) | |
1010 | return -EINVAL; | |
1011 | ||
afdad616 CI |
1012 | if (!kvm->arch.use_cmma) { |
1013 | kvm->arch.migration_mode = 1; | |
1014 | return 0; | |
1015 | } | |
1016 | /* mark all the pages in active slots as dirty */ | |
1017 | for (slotnr = 0; slotnr < slots->used_slots; slotnr++) { | |
1018 | ms = slots->memslots + slotnr; | |
13a17cc0 IM |
1019 | if (!ms->dirty_bitmap) |
1020 | return -EINVAL; | |
190df4a2 | 1021 | /* |
afdad616 CI |
1022 | * The second half of the bitmap is only used on x86, |
1023 | * and would be wasted otherwise, so we put it to good | |
1024 | * use here to keep track of the state of the storage | |
1025 | * attributes. | |
190df4a2 | 1026 | */ |
afdad616 CI |
1027 | memset(kvm_second_dirty_bitmap(ms), 0xff, kvm_dirty_bitmap_bytes(ms)); |
1028 | ram_pages += ms->npages; | |
190df4a2 | 1029 | } |
afdad616 CI |
1030 | atomic64_set(&kvm->arch.cmma_dirty_pages, ram_pages); |
1031 | kvm->arch.migration_mode = 1; | |
1032 | kvm_s390_sync_request_broadcast(kvm, KVM_REQ_START_MIGRATION); | |
190df4a2 CI |
1033 | return 0; |
1034 | } | |
1035 | ||
1036 | /* | |
1de1ea7e | 1037 | * Must be called with kvm->slots_lock to avoid races with ourselves and |
190df4a2 CI |
1038 | * kvm_s390_vm_start_migration. |
1039 | */ | |
1040 | static int kvm_s390_vm_stop_migration(struct kvm *kvm) | |
1041 | { | |
190df4a2 | 1042 | /* migration mode already disabled */ |
afdad616 | 1043 | if (!kvm->arch.migration_mode) |
190df4a2 | 1044 | return 0; |
afdad616 CI |
1045 | kvm->arch.migration_mode = 0; |
1046 | if (kvm->arch.use_cmma) | |
190df4a2 | 1047 | kvm_s390_sync_request_broadcast(kvm, KVM_REQ_STOP_MIGRATION); |
190df4a2 CI |
1048 | return 0; |
1049 | } | |
1050 | ||
1051 | static int kvm_s390_vm_set_migration(struct kvm *kvm, | |
1052 | struct kvm_device_attr *attr) | |
1053 | { | |
1de1ea7e | 1054 | int res = -ENXIO; |
190df4a2 | 1055 | |
1de1ea7e | 1056 | mutex_lock(&kvm->slots_lock); |
190df4a2 CI |
1057 | switch (attr->attr) { |
1058 | case KVM_S390_VM_MIGRATION_START: | |
190df4a2 | 1059 | res = kvm_s390_vm_start_migration(kvm); |
190df4a2 CI |
1060 | break; |
1061 | case KVM_S390_VM_MIGRATION_STOP: | |
1062 | res = kvm_s390_vm_stop_migration(kvm); | |
1063 | break; | |
1064 | default: | |
1065 | break; | |
1066 | } | |
1de1ea7e | 1067 | mutex_unlock(&kvm->slots_lock); |
190df4a2 CI |
1068 | |
1069 | return res; | |
1070 | } | |
1071 | ||
1072 | static int kvm_s390_vm_get_migration(struct kvm *kvm, | |
1073 | struct kvm_device_attr *attr) | |
1074 | { | |
afdad616 | 1075 | u64 mig = kvm->arch.migration_mode; |
190df4a2 CI |
1076 | |
1077 | if (attr->attr != KVM_S390_VM_MIGRATION_STATUS) | |
1078 | return -ENXIO; | |
1079 | ||
1080 | if (copy_to_user((void __user *)attr->addr, &mig, sizeof(mig))) | |
1081 | return -EFAULT; | |
1082 | return 0; | |
1083 | } | |
1084 | ||
8fa1696e CW |
1085 | static int kvm_s390_set_tod_ext(struct kvm *kvm, struct kvm_device_attr *attr) |
1086 | { | |
1087 | struct kvm_s390_vm_tod_clock gtod; | |
1088 | ||
1089 | if (copy_from_user(>od, (void __user *)attr->addr, sizeof(gtod))) | |
1090 | return -EFAULT; | |
1091 | ||
0e7def5f | 1092 | if (!test_kvm_facility(kvm, 139) && gtod.epoch_idx) |
8fa1696e | 1093 | return -EINVAL; |
0e7def5f | 1094 | kvm_s390_set_tod_clock(kvm, >od); |
8fa1696e CW |
1095 | |
1096 | VM_EVENT(kvm, 3, "SET: TOD extension: 0x%x, TOD base: 0x%llx", | |
1097 | gtod.epoch_idx, gtod.tod); | |
1098 | ||
1099 | return 0; | |
1100 | } | |
1101 | ||
72f25020 JH |
1102 | static int kvm_s390_set_tod_high(struct kvm *kvm, struct kvm_device_attr *attr) |
1103 | { | |
1104 | u8 gtod_high; | |
1105 | ||
1106 | if (copy_from_user(>od_high, (void __user *)attr->addr, | |
1107 | sizeof(gtod_high))) | |
1108 | return -EFAULT; | |
1109 | ||
1110 | if (gtod_high != 0) | |
1111 | return -EINVAL; | |
58c383c6 | 1112 | VM_EVENT(kvm, 3, "SET: TOD extension: 0x%x", gtod_high); |
72f25020 JH |
1113 | |
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | static int kvm_s390_set_tod_low(struct kvm *kvm, struct kvm_device_attr *attr) | |
1118 | { | |
0e7def5f | 1119 | struct kvm_s390_vm_tod_clock gtod = { 0 }; |
72f25020 | 1120 | |
0e7def5f DH |
1121 | if (copy_from_user(>od.tod, (void __user *)attr->addr, |
1122 | sizeof(gtod.tod))) | |
72f25020 JH |
1123 | return -EFAULT; |
1124 | ||
0e7def5f DH |
1125 | kvm_s390_set_tod_clock(kvm, >od); |
1126 | VM_EVENT(kvm, 3, "SET: TOD base: 0x%llx", gtod.tod); | |
72f25020 JH |
1127 | return 0; |
1128 | } | |
1129 | ||
1130 | static int kvm_s390_set_tod(struct kvm *kvm, struct kvm_device_attr *attr) | |
1131 | { | |
1132 | int ret; | |
1133 | ||
1134 | if (attr->flags) | |
1135 | return -EINVAL; | |
1136 | ||
1137 | switch (attr->attr) { | |
8fa1696e CW |
1138 | case KVM_S390_VM_TOD_EXT: |
1139 | ret = kvm_s390_set_tod_ext(kvm, attr); | |
1140 | break; | |
72f25020 JH |
1141 | case KVM_S390_VM_TOD_HIGH: |
1142 | ret = kvm_s390_set_tod_high(kvm, attr); | |
1143 | break; | |
1144 | case KVM_S390_VM_TOD_LOW: | |
1145 | ret = kvm_s390_set_tod_low(kvm, attr); | |
1146 | break; | |
1147 | default: | |
1148 | ret = -ENXIO; | |
1149 | break; | |
1150 | } | |
1151 | return ret; | |
1152 | } | |
1153 | ||
33d1b272 DH |
1154 | static void kvm_s390_get_tod_clock(struct kvm *kvm, |
1155 | struct kvm_s390_vm_tod_clock *gtod) | |
8fa1696e CW |
1156 | { |
1157 | struct kvm_s390_tod_clock_ext htod; | |
1158 | ||
1159 | preempt_disable(); | |
1160 | ||
1161 | get_tod_clock_ext((char *)&htod); | |
1162 | ||
1163 | gtod->tod = htod.tod + kvm->arch.epoch; | |
33d1b272 DH |
1164 | gtod->epoch_idx = 0; |
1165 | if (test_kvm_facility(kvm, 139)) { | |
1166 | gtod->epoch_idx = htod.epoch_idx + kvm->arch.epdx; | |
1167 | if (gtod->tod < htod.tod) | |
1168 | gtod->epoch_idx += 1; | |
1169 | } | |
8fa1696e CW |
1170 | |
1171 | preempt_enable(); | |
1172 | } | |
1173 | ||
1174 | static int kvm_s390_get_tod_ext(struct kvm *kvm, struct kvm_device_attr *attr) | |
1175 | { | |
1176 | struct kvm_s390_vm_tod_clock gtod; | |
1177 | ||
1178 | memset(>od, 0, sizeof(gtod)); | |
33d1b272 | 1179 | kvm_s390_get_tod_clock(kvm, >od); |
8fa1696e CW |
1180 | if (copy_to_user((void __user *)attr->addr, >od, sizeof(gtod))) |
1181 | return -EFAULT; | |
1182 | ||
1183 | VM_EVENT(kvm, 3, "QUERY: TOD extension: 0x%x, TOD base: 0x%llx", | |
1184 | gtod.epoch_idx, gtod.tod); | |
1185 | return 0; | |
1186 | } | |
1187 | ||
72f25020 JH |
1188 | static int kvm_s390_get_tod_high(struct kvm *kvm, struct kvm_device_attr *attr) |
1189 | { | |
1190 | u8 gtod_high = 0; | |
1191 | ||
1192 | if (copy_to_user((void __user *)attr->addr, >od_high, | |
1193 | sizeof(gtod_high))) | |
1194 | return -EFAULT; | |
58c383c6 | 1195 | VM_EVENT(kvm, 3, "QUERY: TOD extension: 0x%x", gtod_high); |
72f25020 JH |
1196 | |
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | static int kvm_s390_get_tod_low(struct kvm *kvm, struct kvm_device_attr *attr) | |
1201 | { | |
5a3d883a | 1202 | u64 gtod; |
72f25020 | 1203 | |
60417fcc | 1204 | gtod = kvm_s390_get_tod_clock_fast(kvm); |
72f25020 JH |
1205 | if (copy_to_user((void __user *)attr->addr, >od, sizeof(gtod))) |
1206 | return -EFAULT; | |
58c383c6 | 1207 | VM_EVENT(kvm, 3, "QUERY: TOD base: 0x%llx", gtod); |
72f25020 JH |
1208 | |
1209 | return 0; | |
1210 | } | |
1211 | ||
1212 | static int kvm_s390_get_tod(struct kvm *kvm, struct kvm_device_attr *attr) | |
1213 | { | |
1214 | int ret; | |
1215 | ||
1216 | if (attr->flags) | |
1217 | return -EINVAL; | |
1218 | ||
1219 | switch (attr->attr) { | |
8fa1696e CW |
1220 | case KVM_S390_VM_TOD_EXT: |
1221 | ret = kvm_s390_get_tod_ext(kvm, attr); | |
1222 | break; | |
72f25020 JH |
1223 | case KVM_S390_VM_TOD_HIGH: |
1224 | ret = kvm_s390_get_tod_high(kvm, attr); | |
1225 | break; | |
1226 | case KVM_S390_VM_TOD_LOW: | |
1227 | ret = kvm_s390_get_tod_low(kvm, attr); | |
1228 | break; | |
1229 | default: | |
1230 | ret = -ENXIO; | |
1231 | break; | |
1232 | } | |
1233 | return ret; | |
1234 | } | |
1235 | ||
658b6eda MM |
1236 | static int kvm_s390_set_processor(struct kvm *kvm, struct kvm_device_attr *attr) |
1237 | { | |
1238 | struct kvm_s390_vm_cpu_processor *proc; | |
053dd230 | 1239 | u16 lowest_ibc, unblocked_ibc; |
658b6eda MM |
1240 | int ret = 0; |
1241 | ||
1242 | mutex_lock(&kvm->lock); | |
a03825bb | 1243 | if (kvm->created_vcpus) { |
658b6eda MM |
1244 | ret = -EBUSY; |
1245 | goto out; | |
1246 | } | |
1247 | proc = kzalloc(sizeof(*proc), GFP_KERNEL); | |
1248 | if (!proc) { | |
1249 | ret = -ENOMEM; | |
1250 | goto out; | |
1251 | } | |
1252 | if (!copy_from_user(proc, (void __user *)attr->addr, | |
1253 | sizeof(*proc))) { | |
9bb0ec09 | 1254 | kvm->arch.model.cpuid = proc->cpuid; |
053dd230 DH |
1255 | lowest_ibc = sclp.ibc >> 16 & 0xfff; |
1256 | unblocked_ibc = sclp.ibc & 0xfff; | |
0487c44d | 1257 | if (lowest_ibc && proc->ibc) { |
053dd230 DH |
1258 | if (proc->ibc > unblocked_ibc) |
1259 | kvm->arch.model.ibc = unblocked_ibc; | |
1260 | else if (proc->ibc < lowest_ibc) | |
1261 | kvm->arch.model.ibc = lowest_ibc; | |
1262 | else | |
1263 | kvm->arch.model.ibc = proc->ibc; | |
1264 | } | |
c54f0d6a | 1265 | memcpy(kvm->arch.model.fac_list, proc->fac_list, |
658b6eda | 1266 | S390_ARCH_FAC_LIST_SIZE_BYTE); |
a8c39dd7 CB |
1267 | VM_EVENT(kvm, 3, "SET: guest ibc: 0x%4.4x, guest cpuid: 0x%16.16llx", |
1268 | kvm->arch.model.ibc, | |
1269 | kvm->arch.model.cpuid); | |
1270 | VM_EVENT(kvm, 3, "SET: guest faclist: 0x%16.16llx.%16.16llx.%16.16llx", | |
1271 | kvm->arch.model.fac_list[0], | |
1272 | kvm->arch.model.fac_list[1], | |
1273 | kvm->arch.model.fac_list[2]); | |
658b6eda MM |
1274 | } else |
1275 | ret = -EFAULT; | |
1276 | kfree(proc); | |
1277 | out: | |
1278 | mutex_unlock(&kvm->lock); | |
1279 | return ret; | |
1280 | } | |
1281 | ||
15c9705f DH |
1282 | static int kvm_s390_set_processor_feat(struct kvm *kvm, |
1283 | struct kvm_device_attr *attr) | |
1284 | { | |
1285 | struct kvm_s390_vm_cpu_feat data; | |
15c9705f DH |
1286 | |
1287 | if (copy_from_user(&data, (void __user *)attr->addr, sizeof(data))) | |
1288 | return -EFAULT; | |
1289 | if (!bitmap_subset((unsigned long *) data.feat, | |
1290 | kvm_s390_available_cpu_feat, | |
1291 | KVM_S390_VM_CPU_FEAT_NR_BITS)) | |
1292 | return -EINVAL; | |
1293 | ||
1294 | mutex_lock(&kvm->lock); | |
2f8311c9 CB |
1295 | if (kvm->created_vcpus) { |
1296 | mutex_unlock(&kvm->lock); | |
1297 | return -EBUSY; | |
15c9705f | 1298 | } |
2f8311c9 CB |
1299 | bitmap_copy(kvm->arch.cpu_feat, (unsigned long *) data.feat, |
1300 | KVM_S390_VM_CPU_FEAT_NR_BITS); | |
15c9705f | 1301 | mutex_unlock(&kvm->lock); |
2f8311c9 CB |
1302 | VM_EVENT(kvm, 3, "SET: guest feat: 0x%16.16llx.0x%16.16llx.0x%16.16llx", |
1303 | data.feat[0], | |
1304 | data.feat[1], | |
1305 | data.feat[2]); | |
1306 | return 0; | |
15c9705f DH |
1307 | } |
1308 | ||
0a763c78 DH |
1309 | static int kvm_s390_set_processor_subfunc(struct kvm *kvm, |
1310 | struct kvm_device_attr *attr) | |
1311 | { | |
346fa2f8 CB |
1312 | mutex_lock(&kvm->lock); |
1313 | if (kvm->created_vcpus) { | |
1314 | mutex_unlock(&kvm->lock); | |
1315 | return -EBUSY; | |
1316 | } | |
1317 | ||
1318 | if (copy_from_user(&kvm->arch.model.subfuncs, (void __user *)attr->addr, | |
1319 | sizeof(struct kvm_s390_vm_cpu_subfunc))) { | |
1320 | mutex_unlock(&kvm->lock); | |
1321 | return -EFAULT; | |
1322 | } | |
1323 | mutex_unlock(&kvm->lock); | |
1324 | ||
11ba5961 CB |
1325 | VM_EVENT(kvm, 3, "SET: guest PLO subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", |
1326 | ((unsigned long *) &kvm->arch.model.subfuncs.plo)[0], | |
1327 | ((unsigned long *) &kvm->arch.model.subfuncs.plo)[1], | |
1328 | ((unsigned long *) &kvm->arch.model.subfuncs.plo)[2], | |
1329 | ((unsigned long *) &kvm->arch.model.subfuncs.plo)[3]); | |
1330 | VM_EVENT(kvm, 3, "SET: guest PTFF subfunc 0x%16.16lx.%16.16lx", | |
1331 | ((unsigned long *) &kvm->arch.model.subfuncs.ptff)[0], | |
1332 | ((unsigned long *) &kvm->arch.model.subfuncs.ptff)[1]); | |
1333 | VM_EVENT(kvm, 3, "SET: guest KMAC subfunc 0x%16.16lx.%16.16lx", | |
1334 | ((unsigned long *) &kvm->arch.model.subfuncs.kmac)[0], | |
1335 | ((unsigned long *) &kvm->arch.model.subfuncs.kmac)[1]); | |
1336 | VM_EVENT(kvm, 3, "SET: guest KMC subfunc 0x%16.16lx.%16.16lx", | |
1337 | ((unsigned long *) &kvm->arch.model.subfuncs.kmc)[0], | |
1338 | ((unsigned long *) &kvm->arch.model.subfuncs.kmc)[1]); | |
1339 | VM_EVENT(kvm, 3, "SET: guest KM subfunc 0x%16.16lx.%16.16lx", | |
1340 | ((unsigned long *) &kvm->arch.model.subfuncs.km)[0], | |
1341 | ((unsigned long *) &kvm->arch.model.subfuncs.km)[1]); | |
1342 | VM_EVENT(kvm, 3, "SET: guest KIMD subfunc 0x%16.16lx.%16.16lx", | |
1343 | ((unsigned long *) &kvm->arch.model.subfuncs.kimd)[0], | |
1344 | ((unsigned long *) &kvm->arch.model.subfuncs.kimd)[1]); | |
1345 | VM_EVENT(kvm, 3, "SET: guest KLMD subfunc 0x%16.16lx.%16.16lx", | |
1346 | ((unsigned long *) &kvm->arch.model.subfuncs.klmd)[0], | |
1347 | ((unsigned long *) &kvm->arch.model.subfuncs.klmd)[1]); | |
1348 | VM_EVENT(kvm, 3, "SET: guest PCKMO subfunc 0x%16.16lx.%16.16lx", | |
1349 | ((unsigned long *) &kvm->arch.model.subfuncs.pckmo)[0], | |
1350 | ((unsigned long *) &kvm->arch.model.subfuncs.pckmo)[1]); | |
1351 | VM_EVENT(kvm, 3, "SET: guest KMCTR subfunc 0x%16.16lx.%16.16lx", | |
1352 | ((unsigned long *) &kvm->arch.model.subfuncs.kmctr)[0], | |
1353 | ((unsigned long *) &kvm->arch.model.subfuncs.kmctr)[1]); | |
1354 | VM_EVENT(kvm, 3, "SET: guest KMF subfunc 0x%16.16lx.%16.16lx", | |
1355 | ((unsigned long *) &kvm->arch.model.subfuncs.kmf)[0], | |
1356 | ((unsigned long *) &kvm->arch.model.subfuncs.kmf)[1]); | |
1357 | VM_EVENT(kvm, 3, "SET: guest KMO subfunc 0x%16.16lx.%16.16lx", | |
1358 | ((unsigned long *) &kvm->arch.model.subfuncs.kmo)[0], | |
1359 | ((unsigned long *) &kvm->arch.model.subfuncs.kmo)[1]); | |
1360 | VM_EVENT(kvm, 3, "SET: guest PCC subfunc 0x%16.16lx.%16.16lx", | |
1361 | ((unsigned long *) &kvm->arch.model.subfuncs.pcc)[0], | |
1362 | ((unsigned long *) &kvm->arch.model.subfuncs.pcc)[1]); | |
1363 | VM_EVENT(kvm, 3, "SET: guest PPNO subfunc 0x%16.16lx.%16.16lx", | |
1364 | ((unsigned long *) &kvm->arch.model.subfuncs.ppno)[0], | |
1365 | ((unsigned long *) &kvm->arch.model.subfuncs.ppno)[1]); | |
1366 | VM_EVENT(kvm, 3, "SET: guest KMA subfunc 0x%16.16lx.%16.16lx", | |
1367 | ((unsigned long *) &kvm->arch.model.subfuncs.kma)[0], | |
1368 | ((unsigned long *) &kvm->arch.model.subfuncs.kma)[1]); | |
13209ad0 CB |
1369 | VM_EVENT(kvm, 3, "SET: guest KDSA subfunc 0x%16.16lx.%16.16lx", |
1370 | ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[0], | |
1371 | ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[1]); | |
173aec2d CB |
1372 | VM_EVENT(kvm, 3, "SET: guest SORTL subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", |
1373 | ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[0], | |
1374 | ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[1], | |
1375 | ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[2], | |
1376 | ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[3]); | |
4f45b90e CB |
1377 | VM_EVENT(kvm, 3, "SET: guest DFLTCC subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", |
1378 | ((unsigned long *) &kvm->arch.model.subfuncs.dfltcc)[0], | |
1379 | ((unsigned long *) &kvm->arch.model.subfuncs.dfltcc)[1], | |
1380 | ((unsigned long *) &kvm->arch.model.subfuncs.dfltcc)[2], | |
1381 | ((unsigned long *) &kvm->arch.model.subfuncs.dfltcc)[3]); | |
11ba5961 | 1382 | |
346fa2f8 | 1383 | return 0; |
0a763c78 DH |
1384 | } |
1385 | ||
658b6eda MM |
1386 | static int kvm_s390_set_cpu_model(struct kvm *kvm, struct kvm_device_attr *attr) |
1387 | { | |
1388 | int ret = -ENXIO; | |
1389 | ||
1390 | switch (attr->attr) { | |
1391 | case KVM_S390_VM_CPU_PROCESSOR: | |
1392 | ret = kvm_s390_set_processor(kvm, attr); | |
1393 | break; | |
15c9705f DH |
1394 | case KVM_S390_VM_CPU_PROCESSOR_FEAT: |
1395 | ret = kvm_s390_set_processor_feat(kvm, attr); | |
1396 | break; | |
0a763c78 DH |
1397 | case KVM_S390_VM_CPU_PROCESSOR_SUBFUNC: |
1398 | ret = kvm_s390_set_processor_subfunc(kvm, attr); | |
1399 | break; | |
658b6eda MM |
1400 | } |
1401 | return ret; | |
1402 | } | |
1403 | ||
1404 | static int kvm_s390_get_processor(struct kvm *kvm, struct kvm_device_attr *attr) | |
1405 | { | |
1406 | struct kvm_s390_vm_cpu_processor *proc; | |
1407 | int ret = 0; | |
1408 | ||
1409 | proc = kzalloc(sizeof(*proc), GFP_KERNEL); | |
1410 | if (!proc) { | |
1411 | ret = -ENOMEM; | |
1412 | goto out; | |
1413 | } | |
9bb0ec09 | 1414 | proc->cpuid = kvm->arch.model.cpuid; |
658b6eda | 1415 | proc->ibc = kvm->arch.model.ibc; |
c54f0d6a DH |
1416 | memcpy(&proc->fac_list, kvm->arch.model.fac_list, |
1417 | S390_ARCH_FAC_LIST_SIZE_BYTE); | |
a8c39dd7 CB |
1418 | VM_EVENT(kvm, 3, "GET: guest ibc: 0x%4.4x, guest cpuid: 0x%16.16llx", |
1419 | kvm->arch.model.ibc, | |
1420 | kvm->arch.model.cpuid); | |
1421 | VM_EVENT(kvm, 3, "GET: guest faclist: 0x%16.16llx.%16.16llx.%16.16llx", | |
1422 | kvm->arch.model.fac_list[0], | |
1423 | kvm->arch.model.fac_list[1], | |
1424 | kvm->arch.model.fac_list[2]); | |
658b6eda MM |
1425 | if (copy_to_user((void __user *)attr->addr, proc, sizeof(*proc))) |
1426 | ret = -EFAULT; | |
1427 | kfree(proc); | |
1428 | out: | |
1429 | return ret; | |
1430 | } | |
1431 | ||
1432 | static int kvm_s390_get_machine(struct kvm *kvm, struct kvm_device_attr *attr) | |
1433 | { | |
1434 | struct kvm_s390_vm_cpu_machine *mach; | |
1435 | int ret = 0; | |
1436 | ||
1437 | mach = kzalloc(sizeof(*mach), GFP_KERNEL); | |
1438 | if (!mach) { | |
1439 | ret = -ENOMEM; | |
1440 | goto out; | |
1441 | } | |
1442 | get_cpu_id((struct cpuid *) &mach->cpuid); | |
37c5f6c8 | 1443 | mach->ibc = sclp.ibc; |
c54f0d6a | 1444 | memcpy(&mach->fac_mask, kvm->arch.model.fac_mask, |
981467c9 | 1445 | S390_ARCH_FAC_LIST_SIZE_BYTE); |
658b6eda | 1446 | memcpy((unsigned long *)&mach->fac_list, S390_lowcore.stfle_fac_list, |
04478197 | 1447 | sizeof(S390_lowcore.stfle_fac_list)); |
a8c39dd7 CB |
1448 | VM_EVENT(kvm, 3, "GET: host ibc: 0x%4.4x, host cpuid: 0x%16.16llx", |
1449 | kvm->arch.model.ibc, | |
1450 | kvm->arch.model.cpuid); | |
1451 | VM_EVENT(kvm, 3, "GET: host facmask: 0x%16.16llx.%16.16llx.%16.16llx", | |
1452 | mach->fac_mask[0], | |
1453 | mach->fac_mask[1], | |
1454 | mach->fac_mask[2]); | |
1455 | VM_EVENT(kvm, 3, "GET: host faclist: 0x%16.16llx.%16.16llx.%16.16llx", | |
1456 | mach->fac_list[0], | |
1457 | mach->fac_list[1], | |
1458 | mach->fac_list[2]); | |
658b6eda MM |
1459 | if (copy_to_user((void __user *)attr->addr, mach, sizeof(*mach))) |
1460 | ret = -EFAULT; | |
1461 | kfree(mach); | |
1462 | out: | |
1463 | return ret; | |
1464 | } | |
1465 | ||
15c9705f DH |
1466 | static int kvm_s390_get_processor_feat(struct kvm *kvm, |
1467 | struct kvm_device_attr *attr) | |
1468 | { | |
1469 | struct kvm_s390_vm_cpu_feat data; | |
1470 | ||
1471 | bitmap_copy((unsigned long *) data.feat, kvm->arch.cpu_feat, | |
1472 | KVM_S390_VM_CPU_FEAT_NR_BITS); | |
1473 | if (copy_to_user((void __user *)attr->addr, &data, sizeof(data))) | |
1474 | return -EFAULT; | |
2f8311c9 CB |
1475 | VM_EVENT(kvm, 3, "GET: guest feat: 0x%16.16llx.0x%16.16llx.0x%16.16llx", |
1476 | data.feat[0], | |
1477 | data.feat[1], | |
1478 | data.feat[2]); | |
15c9705f DH |
1479 | return 0; |
1480 | } | |
1481 | ||
1482 | static int kvm_s390_get_machine_feat(struct kvm *kvm, | |
1483 | struct kvm_device_attr *attr) | |
1484 | { | |
1485 | struct kvm_s390_vm_cpu_feat data; | |
1486 | ||
1487 | bitmap_copy((unsigned long *) data.feat, | |
1488 | kvm_s390_available_cpu_feat, | |
1489 | KVM_S390_VM_CPU_FEAT_NR_BITS); | |
1490 | if (copy_to_user((void __user *)attr->addr, &data, sizeof(data))) | |
1491 | return -EFAULT; | |
2f8311c9 CB |
1492 | VM_EVENT(kvm, 3, "GET: host feat: 0x%16.16llx.0x%16.16llx.0x%16.16llx", |
1493 | data.feat[0], | |
1494 | data.feat[1], | |
1495 | data.feat[2]); | |
15c9705f DH |
1496 | return 0; |
1497 | } | |
1498 | ||
0a763c78 DH |
1499 | static int kvm_s390_get_processor_subfunc(struct kvm *kvm, |
1500 | struct kvm_device_attr *attr) | |
1501 | { | |
346fa2f8 CB |
1502 | if (copy_to_user((void __user *)attr->addr, &kvm->arch.model.subfuncs, |
1503 | sizeof(struct kvm_s390_vm_cpu_subfunc))) | |
1504 | return -EFAULT; | |
1505 | ||
11ba5961 CB |
1506 | VM_EVENT(kvm, 3, "GET: guest PLO subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", |
1507 | ((unsigned long *) &kvm->arch.model.subfuncs.plo)[0], | |
1508 | ((unsigned long *) &kvm->arch.model.subfuncs.plo)[1], | |
1509 | ((unsigned long *) &kvm->arch.model.subfuncs.plo)[2], | |
1510 | ((unsigned long *) &kvm->arch.model.subfuncs.plo)[3]); | |
1511 | VM_EVENT(kvm, 3, "GET: guest PTFF subfunc 0x%16.16lx.%16.16lx", | |
1512 | ((unsigned long *) &kvm->arch.model.subfuncs.ptff)[0], | |
1513 | ((unsigned long *) &kvm->arch.model.subfuncs.ptff)[1]); | |
1514 | VM_EVENT(kvm, 3, "GET: guest KMAC subfunc 0x%16.16lx.%16.16lx", | |
1515 | ((unsigned long *) &kvm->arch.model.subfuncs.kmac)[0], | |
1516 | ((unsigned long *) &kvm->arch.model.subfuncs.kmac)[1]); | |
1517 | VM_EVENT(kvm, 3, "GET: guest KMC subfunc 0x%16.16lx.%16.16lx", | |
1518 | ((unsigned long *) &kvm->arch.model.subfuncs.kmc)[0], | |
1519 | ((unsigned long *) &kvm->arch.model.subfuncs.kmc)[1]); | |
1520 | VM_EVENT(kvm, 3, "GET: guest KM subfunc 0x%16.16lx.%16.16lx", | |
1521 | ((unsigned long *) &kvm->arch.model.subfuncs.km)[0], | |
1522 | ((unsigned long *) &kvm->arch.model.subfuncs.km)[1]); | |
1523 | VM_EVENT(kvm, 3, "GET: guest KIMD subfunc 0x%16.16lx.%16.16lx", | |
1524 | ((unsigned long *) &kvm->arch.model.subfuncs.kimd)[0], | |
1525 | ((unsigned long *) &kvm->arch.model.subfuncs.kimd)[1]); | |
1526 | VM_EVENT(kvm, 3, "GET: guest KLMD subfunc 0x%16.16lx.%16.16lx", | |
1527 | ((unsigned long *) &kvm->arch.model.subfuncs.klmd)[0], | |
1528 | ((unsigned long *) &kvm->arch.model.subfuncs.klmd)[1]); | |
1529 | VM_EVENT(kvm, 3, "GET: guest PCKMO subfunc 0x%16.16lx.%16.16lx", | |
1530 | ((unsigned long *) &kvm->arch.model.subfuncs.pckmo)[0], | |
1531 | ((unsigned long *) &kvm->arch.model.subfuncs.pckmo)[1]); | |
1532 | VM_EVENT(kvm, 3, "GET: guest KMCTR subfunc 0x%16.16lx.%16.16lx", | |
1533 | ((unsigned long *) &kvm->arch.model.subfuncs.kmctr)[0], | |
1534 | ((unsigned long *) &kvm->arch.model.subfuncs.kmctr)[1]); | |
1535 | VM_EVENT(kvm, 3, "GET: guest KMF subfunc 0x%16.16lx.%16.16lx", | |
1536 | ((unsigned long *) &kvm->arch.model.subfuncs.kmf)[0], | |
1537 | ((unsigned long *) &kvm->arch.model.subfuncs.kmf)[1]); | |
1538 | VM_EVENT(kvm, 3, "GET: guest KMO subfunc 0x%16.16lx.%16.16lx", | |
1539 | ((unsigned long *) &kvm->arch.model.subfuncs.kmo)[0], | |
1540 | ((unsigned long *) &kvm->arch.model.subfuncs.kmo)[1]); | |
1541 | VM_EVENT(kvm, 3, "GET: guest PCC subfunc 0x%16.16lx.%16.16lx", | |
1542 | ((unsigned long *) &kvm->arch.model.subfuncs.pcc)[0], | |
1543 | ((unsigned long *) &kvm->arch.model.subfuncs.pcc)[1]); | |
1544 | VM_EVENT(kvm, 3, "GET: guest PPNO subfunc 0x%16.16lx.%16.16lx", | |
1545 | ((unsigned long *) &kvm->arch.model.subfuncs.ppno)[0], | |
1546 | ((unsigned long *) &kvm->arch.model.subfuncs.ppno)[1]); | |
1547 | VM_EVENT(kvm, 3, "GET: guest KMA subfunc 0x%16.16lx.%16.16lx", | |
1548 | ((unsigned long *) &kvm->arch.model.subfuncs.kma)[0], | |
1549 | ((unsigned long *) &kvm->arch.model.subfuncs.kma)[1]); | |
13209ad0 CB |
1550 | VM_EVENT(kvm, 3, "GET: guest KDSA subfunc 0x%16.16lx.%16.16lx", |
1551 | ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[0], | |
1552 | ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[1]); | |
173aec2d CB |
1553 | VM_EVENT(kvm, 3, "GET: guest SORTL subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", |
1554 | ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[0], | |
1555 | ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[1], | |
1556 | ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[2], | |
1557 | ((unsigned long *) &kvm->arch.model.subfuncs.sortl)[3]); | |
4f45b90e CB |
1558 | VM_EVENT(kvm, 3, "GET: guest DFLTCC subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", |
1559 | ((unsigned long *) &kvm->arch.model.subfuncs.dfltcc)[0], | |
1560 | ((unsigned long *) &kvm->arch.model.subfuncs.dfltcc)[1], | |
1561 | ((unsigned long *) &kvm->arch.model.subfuncs.dfltcc)[2], | |
1562 | ((unsigned long *) &kvm->arch.model.subfuncs.dfltcc)[3]); | |
11ba5961 | 1563 | |
346fa2f8 | 1564 | return 0; |
0a763c78 DH |
1565 | } |
1566 | ||
1567 | static int kvm_s390_get_machine_subfunc(struct kvm *kvm, | |
1568 | struct kvm_device_attr *attr) | |
1569 | { | |
1570 | if (copy_to_user((void __user *)attr->addr, &kvm_s390_available_subfunc, | |
1571 | sizeof(struct kvm_s390_vm_cpu_subfunc))) | |
1572 | return -EFAULT; | |
11ba5961 CB |
1573 | |
1574 | VM_EVENT(kvm, 3, "GET: host PLO subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", | |
1575 | ((unsigned long *) &kvm_s390_available_subfunc.plo)[0], | |
1576 | ((unsigned long *) &kvm_s390_available_subfunc.plo)[1], | |
1577 | ((unsigned long *) &kvm_s390_available_subfunc.plo)[2], | |
1578 | ((unsigned long *) &kvm_s390_available_subfunc.plo)[3]); | |
1579 | VM_EVENT(kvm, 3, "GET: host PTFF subfunc 0x%16.16lx.%16.16lx", | |
1580 | ((unsigned long *) &kvm_s390_available_subfunc.ptff)[0], | |
1581 | ((unsigned long *) &kvm_s390_available_subfunc.ptff)[1]); | |
1582 | VM_EVENT(kvm, 3, "GET: host KMAC subfunc 0x%16.16lx.%16.16lx", | |
1583 | ((unsigned long *) &kvm_s390_available_subfunc.kmac)[0], | |
1584 | ((unsigned long *) &kvm_s390_available_subfunc.kmac)[1]); | |
1585 | VM_EVENT(kvm, 3, "GET: host KMC subfunc 0x%16.16lx.%16.16lx", | |
1586 | ((unsigned long *) &kvm_s390_available_subfunc.kmc)[0], | |
1587 | ((unsigned long *) &kvm_s390_available_subfunc.kmc)[1]); | |
1588 | VM_EVENT(kvm, 3, "GET: host KM subfunc 0x%16.16lx.%16.16lx", | |
1589 | ((unsigned long *) &kvm_s390_available_subfunc.km)[0], | |
1590 | ((unsigned long *) &kvm_s390_available_subfunc.km)[1]); | |
1591 | VM_EVENT(kvm, 3, "GET: host KIMD subfunc 0x%16.16lx.%16.16lx", | |
1592 | ((unsigned long *) &kvm_s390_available_subfunc.kimd)[0], | |
1593 | ((unsigned long *) &kvm_s390_available_subfunc.kimd)[1]); | |
1594 | VM_EVENT(kvm, 3, "GET: host KLMD subfunc 0x%16.16lx.%16.16lx", | |
1595 | ((unsigned long *) &kvm_s390_available_subfunc.klmd)[0], | |
1596 | ((unsigned long *) &kvm_s390_available_subfunc.klmd)[1]); | |
1597 | VM_EVENT(kvm, 3, "GET: host PCKMO subfunc 0x%16.16lx.%16.16lx", | |
1598 | ((unsigned long *) &kvm_s390_available_subfunc.pckmo)[0], | |
1599 | ((unsigned long *) &kvm_s390_available_subfunc.pckmo)[1]); | |
1600 | VM_EVENT(kvm, 3, "GET: host KMCTR subfunc 0x%16.16lx.%16.16lx", | |
1601 | ((unsigned long *) &kvm_s390_available_subfunc.kmctr)[0], | |
1602 | ((unsigned long *) &kvm_s390_available_subfunc.kmctr)[1]); | |
1603 | VM_EVENT(kvm, 3, "GET: host KMF subfunc 0x%16.16lx.%16.16lx", | |
1604 | ((unsigned long *) &kvm_s390_available_subfunc.kmf)[0], | |
1605 | ((unsigned long *) &kvm_s390_available_subfunc.kmf)[1]); | |
1606 | VM_EVENT(kvm, 3, "GET: host KMO subfunc 0x%16.16lx.%16.16lx", | |
1607 | ((unsigned long *) &kvm_s390_available_subfunc.kmo)[0], | |
1608 | ((unsigned long *) &kvm_s390_available_subfunc.kmo)[1]); | |
1609 | VM_EVENT(kvm, 3, "GET: host PCC subfunc 0x%16.16lx.%16.16lx", | |
1610 | ((unsigned long *) &kvm_s390_available_subfunc.pcc)[0], | |
1611 | ((unsigned long *) &kvm_s390_available_subfunc.pcc)[1]); | |
1612 | VM_EVENT(kvm, 3, "GET: host PPNO subfunc 0x%16.16lx.%16.16lx", | |
1613 | ((unsigned long *) &kvm_s390_available_subfunc.ppno)[0], | |
1614 | ((unsigned long *) &kvm_s390_available_subfunc.ppno)[1]); | |
1615 | VM_EVENT(kvm, 3, "GET: host KMA subfunc 0x%16.16lx.%16.16lx", | |
1616 | ((unsigned long *) &kvm_s390_available_subfunc.kma)[0], | |
1617 | ((unsigned long *) &kvm_s390_available_subfunc.kma)[1]); | |
13209ad0 CB |
1618 | VM_EVENT(kvm, 3, "GET: host KDSA subfunc 0x%16.16lx.%16.16lx", |
1619 | ((unsigned long *) &kvm_s390_available_subfunc.kdsa)[0], | |
1620 | ((unsigned long *) &kvm_s390_available_subfunc.kdsa)[1]); | |
173aec2d CB |
1621 | VM_EVENT(kvm, 3, "GET: host SORTL subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", |
1622 | ((unsigned long *) &kvm_s390_available_subfunc.sortl)[0], | |
1623 | ((unsigned long *) &kvm_s390_available_subfunc.sortl)[1], | |
1624 | ((unsigned long *) &kvm_s390_available_subfunc.sortl)[2], | |
1625 | ((unsigned long *) &kvm_s390_available_subfunc.sortl)[3]); | |
4f45b90e CB |
1626 | VM_EVENT(kvm, 3, "GET: host DFLTCC subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx", |
1627 | ((unsigned long *) &kvm_s390_available_subfunc.dfltcc)[0], | |
1628 | ((unsigned long *) &kvm_s390_available_subfunc.dfltcc)[1], | |
1629 | ((unsigned long *) &kvm_s390_available_subfunc.dfltcc)[2], | |
1630 | ((unsigned long *) &kvm_s390_available_subfunc.dfltcc)[3]); | |
11ba5961 | 1631 | |
0a763c78 DH |
1632 | return 0; |
1633 | } | |
346fa2f8 | 1634 | |
658b6eda MM |
1635 | static int kvm_s390_get_cpu_model(struct kvm *kvm, struct kvm_device_attr *attr) |
1636 | { | |
1637 | int ret = -ENXIO; | |
1638 | ||
1639 | switch (attr->attr) { | |
1640 | case KVM_S390_VM_CPU_PROCESSOR: | |
1641 | ret = kvm_s390_get_processor(kvm, attr); | |
1642 | break; | |
1643 | case KVM_S390_VM_CPU_MACHINE: | |
1644 | ret = kvm_s390_get_machine(kvm, attr); | |
1645 | break; | |
15c9705f DH |
1646 | case KVM_S390_VM_CPU_PROCESSOR_FEAT: |
1647 | ret = kvm_s390_get_processor_feat(kvm, attr); | |
1648 | break; | |
1649 | case KVM_S390_VM_CPU_MACHINE_FEAT: | |
1650 | ret = kvm_s390_get_machine_feat(kvm, attr); | |
1651 | break; | |
0a763c78 DH |
1652 | case KVM_S390_VM_CPU_PROCESSOR_SUBFUNC: |
1653 | ret = kvm_s390_get_processor_subfunc(kvm, attr); | |
1654 | break; | |
1655 | case KVM_S390_VM_CPU_MACHINE_SUBFUNC: | |
1656 | ret = kvm_s390_get_machine_subfunc(kvm, attr); | |
1657 | break; | |
658b6eda MM |
1658 | } |
1659 | return ret; | |
1660 | } | |
1661 | ||
f2061656 DD |
1662 | static int kvm_s390_vm_set_attr(struct kvm *kvm, struct kvm_device_attr *attr) |
1663 | { | |
1664 | int ret; | |
1665 | ||
1666 | switch (attr->group) { | |
4f718eab | 1667 | case KVM_S390_VM_MEM_CTRL: |
8c0a7ce6 | 1668 | ret = kvm_s390_set_mem_control(kvm, attr); |
4f718eab | 1669 | break; |
72f25020 JH |
1670 | case KVM_S390_VM_TOD: |
1671 | ret = kvm_s390_set_tod(kvm, attr); | |
1672 | break; | |
658b6eda MM |
1673 | case KVM_S390_VM_CPU_MODEL: |
1674 | ret = kvm_s390_set_cpu_model(kvm, attr); | |
1675 | break; | |
a374e892 TK |
1676 | case KVM_S390_VM_CRYPTO: |
1677 | ret = kvm_s390_vm_set_crypto(kvm, attr); | |
1678 | break; | |
190df4a2 CI |
1679 | case KVM_S390_VM_MIGRATION: |
1680 | ret = kvm_s390_vm_set_migration(kvm, attr); | |
1681 | break; | |
f2061656 DD |
1682 | default: |
1683 | ret = -ENXIO; | |
1684 | break; | |
1685 | } | |
1686 | ||
1687 | return ret; | |
1688 | } | |
1689 | ||
1690 | static int kvm_s390_vm_get_attr(struct kvm *kvm, struct kvm_device_attr *attr) | |
1691 | { | |
8c0a7ce6 DD |
1692 | int ret; |
1693 | ||
1694 | switch (attr->group) { | |
1695 | case KVM_S390_VM_MEM_CTRL: | |
1696 | ret = kvm_s390_get_mem_control(kvm, attr); | |
1697 | break; | |
72f25020 JH |
1698 | case KVM_S390_VM_TOD: |
1699 | ret = kvm_s390_get_tod(kvm, attr); | |
1700 | break; | |
658b6eda MM |
1701 | case KVM_S390_VM_CPU_MODEL: |
1702 | ret = kvm_s390_get_cpu_model(kvm, attr); | |
1703 | break; | |
190df4a2 CI |
1704 | case KVM_S390_VM_MIGRATION: |
1705 | ret = kvm_s390_vm_get_migration(kvm, attr); | |
1706 | break; | |
8c0a7ce6 DD |
1707 | default: |
1708 | ret = -ENXIO; | |
1709 | break; | |
1710 | } | |
1711 | ||
1712 | return ret; | |
f2061656 DD |
1713 | } |
1714 | ||
1715 | static int kvm_s390_vm_has_attr(struct kvm *kvm, struct kvm_device_attr *attr) | |
1716 | { | |
1717 | int ret; | |
1718 | ||
1719 | switch (attr->group) { | |
4f718eab DD |
1720 | case KVM_S390_VM_MEM_CTRL: |
1721 | switch (attr->attr) { | |
1722 | case KVM_S390_VM_MEM_ENABLE_CMMA: | |
1723 | case KVM_S390_VM_MEM_CLR_CMMA: | |
f9cbd9b0 DH |
1724 | ret = sclp.has_cmma ? 0 : -ENXIO; |
1725 | break; | |
8c0a7ce6 | 1726 | case KVM_S390_VM_MEM_LIMIT_SIZE: |
4f718eab DD |
1727 | ret = 0; |
1728 | break; | |
1729 | default: | |
1730 | ret = -ENXIO; | |
1731 | break; | |
1732 | } | |
1733 | break; | |
72f25020 JH |
1734 | case KVM_S390_VM_TOD: |
1735 | switch (attr->attr) { | |
1736 | case KVM_S390_VM_TOD_LOW: | |
1737 | case KVM_S390_VM_TOD_HIGH: | |
1738 | ret = 0; | |
1739 | break; | |
1740 | default: | |
1741 | ret = -ENXIO; | |
1742 | break; | |
1743 | } | |
1744 | break; | |
658b6eda MM |
1745 | case KVM_S390_VM_CPU_MODEL: |
1746 | switch (attr->attr) { | |
1747 | case KVM_S390_VM_CPU_PROCESSOR: | |
1748 | case KVM_S390_VM_CPU_MACHINE: | |
15c9705f DH |
1749 | case KVM_S390_VM_CPU_PROCESSOR_FEAT: |
1750 | case KVM_S390_VM_CPU_MACHINE_FEAT: | |
0a763c78 | 1751 | case KVM_S390_VM_CPU_MACHINE_SUBFUNC: |
346fa2f8 | 1752 | case KVM_S390_VM_CPU_PROCESSOR_SUBFUNC: |
658b6eda MM |
1753 | ret = 0; |
1754 | break; | |
1755 | default: | |
1756 | ret = -ENXIO; | |
1757 | break; | |
1758 | } | |
1759 | break; | |
a374e892 TK |
1760 | case KVM_S390_VM_CRYPTO: |
1761 | switch (attr->attr) { | |
1762 | case KVM_S390_VM_CRYPTO_ENABLE_AES_KW: | |
1763 | case KVM_S390_VM_CRYPTO_ENABLE_DEA_KW: | |
1764 | case KVM_S390_VM_CRYPTO_DISABLE_AES_KW: | |
1765 | case KVM_S390_VM_CRYPTO_DISABLE_DEA_KW: | |
1766 | ret = 0; | |
1767 | break; | |
37940fb0 TK |
1768 | case KVM_S390_VM_CRYPTO_ENABLE_APIE: |
1769 | case KVM_S390_VM_CRYPTO_DISABLE_APIE: | |
1770 | ret = ap_instructions_available() ? 0 : -ENXIO; | |
1771 | break; | |
a374e892 TK |
1772 | default: |
1773 | ret = -ENXIO; | |
1774 | break; | |
1775 | } | |
1776 | break; | |
190df4a2 CI |
1777 | case KVM_S390_VM_MIGRATION: |
1778 | ret = 0; | |
1779 | break; | |
f2061656 DD |
1780 | default: |
1781 | ret = -ENXIO; | |
1782 | break; | |
1783 | } | |
1784 | ||
1785 | return ret; | |
1786 | } | |
1787 | ||
30ee2a98 JH |
1788 | static long kvm_s390_get_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) |
1789 | { | |
1790 | uint8_t *keys; | |
1791 | uint64_t hva; | |
4f899147 | 1792 | int srcu_idx, i, r = 0; |
30ee2a98 JH |
1793 | |
1794 | if (args->flags != 0) | |
1795 | return -EINVAL; | |
1796 | ||
1797 | /* Is this guest using storage keys? */ | |
55531b74 | 1798 | if (!mm_uses_skeys(current->mm)) |
30ee2a98 JH |
1799 | return KVM_S390_GET_SKEYS_NONE; |
1800 | ||
1801 | /* Enforce sane limit on memory allocation */ | |
1802 | if (args->count < 1 || args->count > KVM_S390_SKEYS_MAX) | |
1803 | return -EINVAL; | |
1804 | ||
752ade68 | 1805 | keys = kvmalloc_array(args->count, sizeof(uint8_t), GFP_KERNEL); |
30ee2a98 JH |
1806 | if (!keys) |
1807 | return -ENOMEM; | |
1808 | ||
d3ed1cee | 1809 | down_read(¤t->mm->mmap_sem); |
4f899147 | 1810 | srcu_idx = srcu_read_lock(&kvm->srcu); |
30ee2a98 JH |
1811 | for (i = 0; i < args->count; i++) { |
1812 | hva = gfn_to_hva(kvm, args->start_gfn + i); | |
1813 | if (kvm_is_error_hva(hva)) { | |
1814 | r = -EFAULT; | |
d3ed1cee | 1815 | break; |
30ee2a98 JH |
1816 | } |
1817 | ||
154c8c19 DH |
1818 | r = get_guest_storage_key(current->mm, hva, &keys[i]); |
1819 | if (r) | |
d3ed1cee | 1820 | break; |
30ee2a98 | 1821 | } |
4f899147 | 1822 | srcu_read_unlock(&kvm->srcu, srcu_idx); |
d3ed1cee MS |
1823 | up_read(¤t->mm->mmap_sem); |
1824 | ||
1825 | if (!r) { | |
1826 | r = copy_to_user((uint8_t __user *)args->skeydata_addr, keys, | |
1827 | sizeof(uint8_t) * args->count); | |
1828 | if (r) | |
1829 | r = -EFAULT; | |
30ee2a98 JH |
1830 | } |
1831 | ||
30ee2a98 JH |
1832 | kvfree(keys); |
1833 | return r; | |
1834 | } | |
1835 | ||
1836 | static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) | |
1837 | { | |
1838 | uint8_t *keys; | |
1839 | uint64_t hva; | |
4f899147 | 1840 | int srcu_idx, i, r = 0; |
bd096f64 | 1841 | bool unlocked; |
30ee2a98 JH |
1842 | |
1843 | if (args->flags != 0) | |
1844 | return -EINVAL; | |
1845 | ||
1846 | /* Enforce sane limit on memory allocation */ | |
1847 | if (args->count < 1 || args->count > KVM_S390_SKEYS_MAX) | |
1848 | return -EINVAL; | |
1849 | ||
752ade68 | 1850 | keys = kvmalloc_array(args->count, sizeof(uint8_t), GFP_KERNEL); |
30ee2a98 JH |
1851 | if (!keys) |
1852 | return -ENOMEM; | |
1853 | ||
1854 | r = copy_from_user(keys, (uint8_t __user *)args->skeydata_addr, | |
1855 | sizeof(uint8_t) * args->count); | |
1856 | if (r) { | |
1857 | r = -EFAULT; | |
1858 | goto out; | |
1859 | } | |
1860 | ||
1861 | /* Enable storage key handling for the guest */ | |
14d4a425 DD |
1862 | r = s390_enable_skey(); |
1863 | if (r) | |
1864 | goto out; | |
30ee2a98 | 1865 | |
bd096f64 | 1866 | i = 0; |
d3ed1cee | 1867 | down_read(¤t->mm->mmap_sem); |
4f899147 | 1868 | srcu_idx = srcu_read_lock(&kvm->srcu); |
bd096f64 JF |
1869 | while (i < args->count) { |
1870 | unlocked = false; | |
30ee2a98 JH |
1871 | hva = gfn_to_hva(kvm, args->start_gfn + i); |
1872 | if (kvm_is_error_hva(hva)) { | |
1873 | r = -EFAULT; | |
d3ed1cee | 1874 | break; |
30ee2a98 JH |
1875 | } |
1876 | ||
1877 | /* Lowest order bit is reserved */ | |
1878 | if (keys[i] & 0x01) { | |
1879 | r = -EINVAL; | |
d3ed1cee | 1880 | break; |
30ee2a98 JH |
1881 | } |
1882 | ||
fe69eabf | 1883 | r = set_guest_storage_key(current->mm, hva, keys[i], 0); |
bd096f64 JF |
1884 | if (r) { |
1885 | r = fixup_user_fault(current, current->mm, hva, | |
1886 | FAULT_FLAG_WRITE, &unlocked); | |
1887 | if (r) | |
1888 | break; | |
1889 | } | |
1890 | if (!r) | |
1891 | i++; | |
30ee2a98 | 1892 | } |
4f899147 | 1893 | srcu_read_unlock(&kvm->srcu, srcu_idx); |
d3ed1cee | 1894 | up_read(¤t->mm->mmap_sem); |
30ee2a98 JH |
1895 | out: |
1896 | kvfree(keys); | |
1897 | return r; | |
1898 | } | |
1899 | ||
4036e387 CI |
1900 | /* |
1901 | * Base address and length must be sent at the start of each block, therefore | |
1902 | * it's cheaper to send some clean data, as long as it's less than the size of | |
1903 | * two longs. | |
1904 | */ | |
1905 | #define KVM_S390_MAX_BIT_DISTANCE (2 * sizeof(void *)) | |
1906 | /* for consistency */ | |
1907 | #define KVM_S390_CMMA_SIZE_MAX ((u32)KVM_S390_SKEYS_MAX) | |
1908 | ||
afdad616 CI |
1909 | /* |
1910 | * Similar to gfn_to_memslot, but returns the index of a memslot also when the | |
1911 | * address falls in a hole. In that case the index of one of the memslots | |
1912 | * bordering the hole is returned. | |
1913 | */ | |
1914 | static int gfn_to_memslot_approx(struct kvm_memslots *slots, gfn_t gfn) | |
1915 | { | |
1916 | int start = 0, end = slots->used_slots; | |
1917 | int slot = atomic_read(&slots->lru_slot); | |
1918 | struct kvm_memory_slot *memslots = slots->memslots; | |
1919 | ||
1920 | if (gfn >= memslots[slot].base_gfn && | |
1921 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
1922 | return slot; | |
1923 | ||
1924 | while (start < end) { | |
1925 | slot = start + (end - start) / 2; | |
1926 | ||
1927 | if (gfn >= memslots[slot].base_gfn) | |
1928 | end = slot; | |
1929 | else | |
1930 | start = slot + 1; | |
1931 | } | |
1932 | ||
1933 | if (gfn >= memslots[start].base_gfn && | |
1934 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
1935 | atomic_set(&slots->lru_slot, start); | |
1936 | } | |
1937 | ||
1938 | return start; | |
1939 | } | |
1940 | ||
1941 | static int kvm_s390_peek_cmma(struct kvm *kvm, struct kvm_s390_cmma_log *args, | |
1942 | u8 *res, unsigned long bufsize) | |
1943 | { | |
1944 | unsigned long pgstev, hva, cur_gfn = args->start_gfn; | |
1945 | ||
1946 | args->count = 0; | |
1947 | while (args->count < bufsize) { | |
1948 | hva = gfn_to_hva(kvm, cur_gfn); | |
1949 | /* | |
1950 | * We return an error if the first value was invalid, but we | |
1951 | * return successfully if at least one value was copied. | |
1952 | */ | |
1953 | if (kvm_is_error_hva(hva)) | |
1954 | return args->count ? 0 : -EFAULT; | |
1955 | if (get_pgste(kvm->mm, hva, &pgstev) < 0) | |
1956 | pgstev = 0; | |
1957 | res[args->count++] = (pgstev >> 24) & 0x43; | |
1958 | cur_gfn++; | |
1959 | } | |
1960 | ||
1961 | return 0; | |
1962 | } | |
1963 | ||
1964 | static unsigned long kvm_s390_next_dirty_cmma(struct kvm_memslots *slots, | |
1965 | unsigned long cur_gfn) | |
1966 | { | |
1967 | int slotidx = gfn_to_memslot_approx(slots, cur_gfn); | |
1968 | struct kvm_memory_slot *ms = slots->memslots + slotidx; | |
1969 | unsigned long ofs = cur_gfn - ms->base_gfn; | |
1970 | ||
1971 | if (ms->base_gfn + ms->npages <= cur_gfn) { | |
1972 | slotidx--; | |
1973 | /* If we are above the highest slot, wrap around */ | |
1974 | if (slotidx < 0) | |
1975 | slotidx = slots->used_slots - 1; | |
1976 | ||
1977 | ms = slots->memslots + slotidx; | |
1978 | ofs = 0; | |
1979 | } | |
1980 | ofs = find_next_bit(kvm_second_dirty_bitmap(ms), ms->npages, ofs); | |
1981 | while ((slotidx > 0) && (ofs >= ms->npages)) { | |
1982 | slotidx--; | |
1983 | ms = slots->memslots + slotidx; | |
1984 | ofs = find_next_bit(kvm_second_dirty_bitmap(ms), ms->npages, 0); | |
1985 | } | |
1986 | return ms->base_gfn + ofs; | |
1987 | } | |
1988 | ||
1989 | static int kvm_s390_get_cmma(struct kvm *kvm, struct kvm_s390_cmma_log *args, | |
1990 | u8 *res, unsigned long bufsize) | |
1991 | { | |
1992 | unsigned long mem_end, cur_gfn, next_gfn, hva, pgstev; | |
1993 | struct kvm_memslots *slots = kvm_memslots(kvm); | |
1994 | struct kvm_memory_slot *ms; | |
1995 | ||
1996 | cur_gfn = kvm_s390_next_dirty_cmma(slots, args->start_gfn); | |
1997 | ms = gfn_to_memslot(kvm, cur_gfn); | |
1998 | args->count = 0; | |
1999 | args->start_gfn = cur_gfn; | |
2000 | if (!ms) | |
2001 | return 0; | |
2002 | next_gfn = kvm_s390_next_dirty_cmma(slots, cur_gfn + 1); | |
2003 | mem_end = slots->memslots[0].base_gfn + slots->memslots[0].npages; | |
2004 | ||
2005 | while (args->count < bufsize) { | |
2006 | hva = gfn_to_hva(kvm, cur_gfn); | |
2007 | if (kvm_is_error_hva(hva)) | |
2008 | return 0; | |
2009 | /* Decrement only if we actually flipped the bit to 0 */ | |
2010 | if (test_and_clear_bit(cur_gfn - ms->base_gfn, kvm_second_dirty_bitmap(ms))) | |
2011 | atomic64_dec(&kvm->arch.cmma_dirty_pages); | |
2012 | if (get_pgste(kvm->mm, hva, &pgstev) < 0) | |
2013 | pgstev = 0; | |
2014 | /* Save the value */ | |
2015 | res[args->count++] = (pgstev >> 24) & 0x43; | |
2016 | /* If the next bit is too far away, stop. */ | |
2017 | if (next_gfn > cur_gfn + KVM_S390_MAX_BIT_DISTANCE) | |
2018 | return 0; | |
2019 | /* If we reached the previous "next", find the next one */ | |
2020 | if (cur_gfn == next_gfn) | |
2021 | next_gfn = kvm_s390_next_dirty_cmma(slots, cur_gfn + 1); | |
2022 | /* Reached the end of memory or of the buffer, stop */ | |
2023 | if ((next_gfn >= mem_end) || | |
2024 | (next_gfn - args->start_gfn >= bufsize)) | |
2025 | return 0; | |
2026 | cur_gfn++; | |
2027 | /* Reached the end of the current memslot, take the next one. */ | |
2028 | if (cur_gfn - ms->base_gfn >= ms->npages) { | |
2029 | ms = gfn_to_memslot(kvm, cur_gfn); | |
2030 | if (!ms) | |
2031 | return 0; | |
2032 | } | |
2033 | } | |
2034 | return 0; | |
2035 | } | |
2036 | ||
4036e387 CI |
2037 | /* |
2038 | * This function searches for the next page with dirty CMMA attributes, and | |
2039 | * saves the attributes in the buffer up to either the end of the buffer or | |
2040 | * until a block of at least KVM_S390_MAX_BIT_DISTANCE clean bits is found; | |
2041 | * no trailing clean bytes are saved. | |
2042 | * In case no dirty bits were found, or if CMMA was not enabled or used, the | |
2043 | * output buffer will indicate 0 as length. | |
2044 | */ | |
2045 | static int kvm_s390_get_cmma_bits(struct kvm *kvm, | |
2046 | struct kvm_s390_cmma_log *args) | |
2047 | { | |
afdad616 CI |
2048 | unsigned long bufsize; |
2049 | int srcu_idx, peek, ret; | |
2050 | u8 *values; | |
4036e387 | 2051 | |
afdad616 | 2052 | if (!kvm->arch.use_cmma) |
4036e387 CI |
2053 | return -ENXIO; |
2054 | /* Invalid/unsupported flags were specified */ | |
2055 | if (args->flags & ~KVM_S390_CMMA_PEEK) | |
2056 | return -EINVAL; | |
2057 | /* Migration mode query, and we are not doing a migration */ | |
2058 | peek = !!(args->flags & KVM_S390_CMMA_PEEK); | |
afdad616 | 2059 | if (!peek && !kvm->arch.migration_mode) |
4036e387 CI |
2060 | return -EINVAL; |
2061 | /* CMMA is disabled or was not used, or the buffer has length zero */ | |
2062 | bufsize = min(args->count, KVM_S390_CMMA_SIZE_MAX); | |
c9f0a2b8 | 2063 | if (!bufsize || !kvm->mm->context.uses_cmm) { |
4036e387 CI |
2064 | memset(args, 0, sizeof(*args)); |
2065 | return 0; | |
2066 | } | |
afdad616 CI |
2067 | /* We are not peeking, and there are no dirty pages */ |
2068 | if (!peek && !atomic64_read(&kvm->arch.cmma_dirty_pages)) { | |
2069 | memset(args, 0, sizeof(*args)); | |
2070 | return 0; | |
4036e387 CI |
2071 | } |
2072 | ||
afdad616 CI |
2073 | values = vmalloc(bufsize); |
2074 | if (!values) | |
4036e387 CI |
2075 | return -ENOMEM; |
2076 | ||
4036e387 CI |
2077 | down_read(&kvm->mm->mmap_sem); |
2078 | srcu_idx = srcu_read_lock(&kvm->srcu); | |
afdad616 CI |
2079 | if (peek) |
2080 | ret = kvm_s390_peek_cmma(kvm, args, values, bufsize); | |
2081 | else | |
2082 | ret = kvm_s390_get_cmma(kvm, args, values, bufsize); | |
4036e387 CI |
2083 | srcu_read_unlock(&kvm->srcu, srcu_idx); |
2084 | up_read(&kvm->mm->mmap_sem); | |
4036e387 | 2085 | |
afdad616 CI |
2086 | if (kvm->arch.migration_mode) |
2087 | args->remaining = atomic64_read(&kvm->arch.cmma_dirty_pages); | |
2088 | else | |
2089 | args->remaining = 0; | |
4036e387 | 2090 | |
afdad616 CI |
2091 | if (copy_to_user((void __user *)args->values, values, args->count)) |
2092 | ret = -EFAULT; | |
2093 | ||
2094 | vfree(values); | |
2095 | return ret; | |
4036e387 CI |
2096 | } |
2097 | ||
2098 | /* | |
2099 | * This function sets the CMMA attributes for the given pages. If the input | |
2100 | * buffer has zero length, no action is taken, otherwise the attributes are | |
c9f0a2b8 | 2101 | * set and the mm->context.uses_cmm flag is set. |
4036e387 CI |
2102 | */ |
2103 | static int kvm_s390_set_cmma_bits(struct kvm *kvm, | |
2104 | const struct kvm_s390_cmma_log *args) | |
2105 | { | |
2106 | unsigned long hva, mask, pgstev, i; | |
2107 | uint8_t *bits; | |
2108 | int srcu_idx, r = 0; | |
2109 | ||
2110 | mask = args->mask; | |
2111 | ||
2112 | if (!kvm->arch.use_cmma) | |
2113 | return -ENXIO; | |
2114 | /* invalid/unsupported flags */ | |
2115 | if (args->flags != 0) | |
2116 | return -EINVAL; | |
2117 | /* Enforce sane limit on memory allocation */ | |
2118 | if (args->count > KVM_S390_CMMA_SIZE_MAX) | |
2119 | return -EINVAL; | |
2120 | /* Nothing to do */ | |
2121 | if (args->count == 0) | |
2122 | return 0; | |
2123 | ||
42bc47b3 | 2124 | bits = vmalloc(array_size(sizeof(*bits), args->count)); |
4036e387 CI |
2125 | if (!bits) |
2126 | return -ENOMEM; | |
2127 | ||
2128 | r = copy_from_user(bits, (void __user *)args->values, args->count); | |
2129 | if (r) { | |
2130 | r = -EFAULT; | |
2131 | goto out; | |
2132 | } | |
2133 | ||
2134 | down_read(&kvm->mm->mmap_sem); | |
2135 | srcu_idx = srcu_read_lock(&kvm->srcu); | |
2136 | for (i = 0; i < args->count; i++) { | |
2137 | hva = gfn_to_hva(kvm, args->start_gfn + i); | |
2138 | if (kvm_is_error_hva(hva)) { | |
2139 | r = -EFAULT; | |
2140 | break; | |
2141 | } | |
2142 | ||
2143 | pgstev = bits[i]; | |
2144 | pgstev = pgstev << 24; | |
1bab1c02 | 2145 | mask &= _PGSTE_GPS_USAGE_MASK | _PGSTE_GPS_NODAT; |
4036e387 CI |
2146 | set_pgste_bits(kvm->mm, hva, mask, pgstev); |
2147 | } | |
2148 | srcu_read_unlock(&kvm->srcu, srcu_idx); | |
2149 | up_read(&kvm->mm->mmap_sem); | |
2150 | ||
c9f0a2b8 | 2151 | if (!kvm->mm->context.uses_cmm) { |
4036e387 | 2152 | down_write(&kvm->mm->mmap_sem); |
c9f0a2b8 | 2153 | kvm->mm->context.uses_cmm = 1; |
4036e387 CI |
2154 | up_write(&kvm->mm->mmap_sem); |
2155 | } | |
2156 | out: | |
2157 | vfree(bits); | |
2158 | return r; | |
2159 | } | |
2160 | ||
b0c632db HC |
2161 | long kvm_arch_vm_ioctl(struct file *filp, |
2162 | unsigned int ioctl, unsigned long arg) | |
2163 | { | |
2164 | struct kvm *kvm = filp->private_data; | |
2165 | void __user *argp = (void __user *)arg; | |
f2061656 | 2166 | struct kvm_device_attr attr; |
b0c632db HC |
2167 | int r; |
2168 | ||
2169 | switch (ioctl) { | |
ba5c1e9b CO |
2170 | case KVM_S390_INTERRUPT: { |
2171 | struct kvm_s390_interrupt s390int; | |
2172 | ||
2173 | r = -EFAULT; | |
2174 | if (copy_from_user(&s390int, argp, sizeof(s390int))) | |
2175 | break; | |
2176 | r = kvm_s390_inject_vm(kvm, &s390int); | |
2177 | break; | |
2178 | } | |
84223598 CH |
2179 | case KVM_CREATE_IRQCHIP: { |
2180 | struct kvm_irq_routing_entry routing; | |
2181 | ||
2182 | r = -EINVAL; | |
2183 | if (kvm->arch.use_irqchip) { | |
2184 | /* Set up dummy routing. */ | |
2185 | memset(&routing, 0, sizeof(routing)); | |
152b2839 | 2186 | r = kvm_set_irq_routing(kvm, &routing, 0, 0); |
84223598 CH |
2187 | } |
2188 | break; | |
2189 | } | |
f2061656 DD |
2190 | case KVM_SET_DEVICE_ATTR: { |
2191 | r = -EFAULT; | |
2192 | if (copy_from_user(&attr, (void __user *)arg, sizeof(attr))) | |
2193 | break; | |
2194 | r = kvm_s390_vm_set_attr(kvm, &attr); | |
2195 | break; | |
2196 | } | |
2197 | case KVM_GET_DEVICE_ATTR: { | |
2198 | r = -EFAULT; | |
2199 | if (copy_from_user(&attr, (void __user *)arg, sizeof(attr))) | |
2200 | break; | |
2201 | r = kvm_s390_vm_get_attr(kvm, &attr); | |
2202 | break; | |
2203 | } | |
2204 | case KVM_HAS_DEVICE_ATTR: { | |
2205 | r = -EFAULT; | |
2206 | if (copy_from_user(&attr, (void __user *)arg, sizeof(attr))) | |
2207 | break; | |
2208 | r = kvm_s390_vm_has_attr(kvm, &attr); | |
2209 | break; | |
2210 | } | |
30ee2a98 JH |
2211 | case KVM_S390_GET_SKEYS: { |
2212 | struct kvm_s390_skeys args; | |
2213 | ||
2214 | r = -EFAULT; | |
2215 | if (copy_from_user(&args, argp, | |
2216 | sizeof(struct kvm_s390_skeys))) | |
2217 | break; | |
2218 | r = kvm_s390_get_skeys(kvm, &args); | |
2219 | break; | |
2220 | } | |
2221 | case KVM_S390_SET_SKEYS: { | |
2222 | struct kvm_s390_skeys args; | |
2223 | ||
2224 | r = -EFAULT; | |
2225 | if (copy_from_user(&args, argp, | |
2226 | sizeof(struct kvm_s390_skeys))) | |
2227 | break; | |
2228 | r = kvm_s390_set_skeys(kvm, &args); | |
2229 | break; | |
2230 | } | |
4036e387 CI |
2231 | case KVM_S390_GET_CMMA_BITS: { |
2232 | struct kvm_s390_cmma_log args; | |
2233 | ||
2234 | r = -EFAULT; | |
2235 | if (copy_from_user(&args, argp, sizeof(args))) | |
2236 | break; | |
1de1ea7e | 2237 | mutex_lock(&kvm->slots_lock); |
4036e387 | 2238 | r = kvm_s390_get_cmma_bits(kvm, &args); |
1de1ea7e | 2239 | mutex_unlock(&kvm->slots_lock); |
4036e387 CI |
2240 | if (!r) { |
2241 | r = copy_to_user(argp, &args, sizeof(args)); | |
2242 | if (r) | |
2243 | r = -EFAULT; | |
2244 | } | |
2245 | break; | |
2246 | } | |
2247 | case KVM_S390_SET_CMMA_BITS: { | |
2248 | struct kvm_s390_cmma_log args; | |
2249 | ||
2250 | r = -EFAULT; | |
2251 | if (copy_from_user(&args, argp, sizeof(args))) | |
2252 | break; | |
1de1ea7e | 2253 | mutex_lock(&kvm->slots_lock); |
4036e387 | 2254 | r = kvm_s390_set_cmma_bits(kvm, &args); |
1de1ea7e | 2255 | mutex_unlock(&kvm->slots_lock); |
4036e387 CI |
2256 | break; |
2257 | } | |
b0c632db | 2258 | default: |
367e1319 | 2259 | r = -ENOTTY; |
b0c632db HC |
2260 | } |
2261 | ||
2262 | return r; | |
2263 | } | |
2264 | ||
45c9b47c TK |
2265 | static int kvm_s390_apxa_installed(void) |
2266 | { | |
e585b24a | 2267 | struct ap_config_info info; |
45c9b47c | 2268 | |
e585b24a TK |
2269 | if (ap_instructions_available()) { |
2270 | if (ap_qci(&info) == 0) | |
2271 | return info.apxa; | |
45c9b47c TK |
2272 | } |
2273 | ||
2274 | return 0; | |
2275 | } | |
2276 | ||
e585b24a TK |
2277 | /* |
2278 | * The format of the crypto control block (CRYCB) is specified in the 3 low | |
2279 | * order bits of the CRYCB designation (CRYCBD) field as follows: | |
2280 | * Format 0: Neither the message security assist extension 3 (MSAX3) nor the | |
2281 | * AP extended addressing (APXA) facility are installed. | |
2282 | * Format 1: The APXA facility is not installed but the MSAX3 facility is. | |
2283 | * Format 2: Both the APXA and MSAX3 facilities are installed | |
2284 | */ | |
45c9b47c TK |
2285 | static void kvm_s390_set_crycb_format(struct kvm *kvm) |
2286 | { | |
2287 | kvm->arch.crypto.crycbd = (__u32)(unsigned long) kvm->arch.crypto.crycb; | |
2288 | ||
e585b24a TK |
2289 | /* Clear the CRYCB format bits - i.e., set format 0 by default */ |
2290 | kvm->arch.crypto.crycbd &= ~(CRYCB_FORMAT_MASK); | |
2291 | ||
2292 | /* Check whether MSAX3 is installed */ | |
2293 | if (!test_kvm_facility(kvm, 76)) | |
2294 | return; | |
2295 | ||
45c9b47c TK |
2296 | if (kvm_s390_apxa_installed()) |
2297 | kvm->arch.crypto.crycbd |= CRYCB_FORMAT2; | |
2298 | else | |
2299 | kvm->arch.crypto.crycbd |= CRYCB_FORMAT1; | |
2300 | } | |
2301 | ||
0e237e44 PM |
2302 | void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm, |
2303 | unsigned long *aqm, unsigned long *adm) | |
2304 | { | |
2305 | struct kvm_s390_crypto_cb *crycb = kvm->arch.crypto.crycb; | |
2306 | ||
2307 | mutex_lock(&kvm->lock); | |
2308 | kvm_s390_vcpu_block_all(kvm); | |
2309 | ||
2310 | switch (kvm->arch.crypto.crycbd & CRYCB_FORMAT_MASK) { | |
2311 | case CRYCB_FORMAT2: /* APCB1 use 256 bits */ | |
2312 | memcpy(crycb->apcb1.apm, apm, 32); | |
2313 | VM_EVENT(kvm, 3, "SET CRYCB: apm %016lx %016lx %016lx %016lx", | |
2314 | apm[0], apm[1], apm[2], apm[3]); | |
2315 | memcpy(crycb->apcb1.aqm, aqm, 32); | |
2316 | VM_EVENT(kvm, 3, "SET CRYCB: aqm %016lx %016lx %016lx %016lx", | |
2317 | aqm[0], aqm[1], aqm[2], aqm[3]); | |
2318 | memcpy(crycb->apcb1.adm, adm, 32); | |
2319 | VM_EVENT(kvm, 3, "SET CRYCB: adm %016lx %016lx %016lx %016lx", | |
2320 | adm[0], adm[1], adm[2], adm[3]); | |
2321 | break; | |
2322 | case CRYCB_FORMAT1: | |
2323 | case CRYCB_FORMAT0: /* Fall through both use APCB0 */ | |
2324 | memcpy(crycb->apcb0.apm, apm, 8); | |
2325 | memcpy(crycb->apcb0.aqm, aqm, 2); | |
2326 | memcpy(crycb->apcb0.adm, adm, 2); | |
2327 | VM_EVENT(kvm, 3, "SET CRYCB: apm %016lx aqm %04x adm %04x", | |
2328 | apm[0], *((unsigned short *)aqm), | |
2329 | *((unsigned short *)adm)); | |
2330 | break; | |
2331 | default: /* Can not happen */ | |
2332 | break; | |
2333 | } | |
2334 | ||
2335 | /* recreate the shadow crycb for each vcpu */ | |
2336 | kvm_s390_sync_request_broadcast(kvm, KVM_REQ_VSIE_RESTART); | |
2337 | kvm_s390_vcpu_unblock_all(kvm); | |
2338 | mutex_unlock(&kvm->lock); | |
2339 | } | |
2340 | EXPORT_SYMBOL_GPL(kvm_arch_crypto_set_masks); | |
2341 | ||
42104598 TK |
2342 | void kvm_arch_crypto_clear_masks(struct kvm *kvm) |
2343 | { | |
2344 | mutex_lock(&kvm->lock); | |
2345 | kvm_s390_vcpu_block_all(kvm); | |
2346 | ||
2347 | memset(&kvm->arch.crypto.crycb->apcb0, 0, | |
2348 | sizeof(kvm->arch.crypto.crycb->apcb0)); | |
2349 | memset(&kvm->arch.crypto.crycb->apcb1, 0, | |
2350 | sizeof(kvm->arch.crypto.crycb->apcb1)); | |
2351 | ||
0e237e44 | 2352 | VM_EVENT(kvm, 3, "%s", "CLR CRYCB:"); |
6cc571b1 PM |
2353 | /* recreate the shadow crycb for each vcpu */ |
2354 | kvm_s390_sync_request_broadcast(kvm, KVM_REQ_VSIE_RESTART); | |
42104598 TK |
2355 | kvm_s390_vcpu_unblock_all(kvm); |
2356 | mutex_unlock(&kvm->lock); | |
2357 | } | |
2358 | EXPORT_SYMBOL_GPL(kvm_arch_crypto_clear_masks); | |
2359 | ||
9bb0ec09 | 2360 | static u64 kvm_s390_get_initial_cpuid(void) |
9d8d5786 | 2361 | { |
9bb0ec09 DH |
2362 | struct cpuid cpuid; |
2363 | ||
2364 | get_cpu_id(&cpuid); | |
2365 | cpuid.version = 0xff; | |
2366 | return *((u64 *) &cpuid); | |
9d8d5786 MM |
2367 | } |
2368 | ||
c54f0d6a | 2369 | static void kvm_s390_crypto_init(struct kvm *kvm) |
5102ee87 | 2370 | { |
c54f0d6a | 2371 | kvm->arch.crypto.crycb = &kvm->arch.sie_page2->crycb; |
45c9b47c | 2372 | kvm_s390_set_crycb_format(kvm); |
5102ee87 | 2373 | |
e585b24a TK |
2374 | if (!test_kvm_facility(kvm, 76)) |
2375 | return; | |
2376 | ||
ed6f76b4 TK |
2377 | /* Enable AES/DEA protected key functions by default */ |
2378 | kvm->arch.crypto.aes_kw = 1; | |
2379 | kvm->arch.crypto.dea_kw = 1; | |
2380 | get_random_bytes(kvm->arch.crypto.crycb->aes_wrapping_key_mask, | |
2381 | sizeof(kvm->arch.crypto.crycb->aes_wrapping_key_mask)); | |
2382 | get_random_bytes(kvm->arch.crypto.crycb->dea_wrapping_key_mask, | |
2383 | sizeof(kvm->arch.crypto.crycb->dea_wrapping_key_mask)); | |
5102ee87 TK |
2384 | } |
2385 | ||
7d43bafc ED |
2386 | static void sca_dispose(struct kvm *kvm) |
2387 | { | |
2388 | if (kvm->arch.use_esca) | |
5e044315 | 2389 | free_pages_exact(kvm->arch.sca, sizeof(struct esca_block)); |
7d43bafc ED |
2390 | else |
2391 | free_page((unsigned long)(kvm->arch.sca)); | |
2392 | kvm->arch.sca = NULL; | |
2393 | } | |
2394 | ||
e08b9637 | 2395 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
b0c632db | 2396 | { |
76a6dd72 | 2397 | gfp_t alloc_flags = GFP_KERNEL; |
9d8d5786 | 2398 | int i, rc; |
b0c632db | 2399 | char debug_name[16]; |
f6c137ff | 2400 | static unsigned long sca_offset; |
b0c632db | 2401 | |
e08b9637 CO |
2402 | rc = -EINVAL; |
2403 | #ifdef CONFIG_KVM_S390_UCONTROL | |
2404 | if (type & ~KVM_VM_S390_UCONTROL) | |
2405 | goto out_err; | |
2406 | if ((type & KVM_VM_S390_UCONTROL) && (!capable(CAP_SYS_ADMIN))) | |
2407 | goto out_err; | |
2408 | #else | |
2409 | if (type) | |
2410 | goto out_err; | |
2411 | #endif | |
2412 | ||
b0c632db HC |
2413 | rc = s390_enable_sie(); |
2414 | if (rc) | |
d89f5eff | 2415 | goto out_err; |
b0c632db | 2416 | |
b290411a CO |
2417 | rc = -ENOMEM; |
2418 | ||
76a6dd72 DH |
2419 | if (!sclp.has_64bscao) |
2420 | alloc_flags |= GFP_DMA; | |
5e044315 | 2421 | rwlock_init(&kvm->arch.sca_lock); |
9ac96d75 | 2422 | /* start with basic SCA */ |
76a6dd72 | 2423 | kvm->arch.sca = (struct bsca_block *) get_zeroed_page(alloc_flags); |
b0c632db | 2424 | if (!kvm->arch.sca) |
d89f5eff | 2425 | goto out_err; |
0d9ce162 | 2426 | mutex_lock(&kvm_lock); |
c5c2c393 | 2427 | sca_offset += 16; |
bc784cce | 2428 | if (sca_offset + sizeof(struct bsca_block) > PAGE_SIZE) |
c5c2c393 | 2429 | sca_offset = 0; |
bc784cce ED |
2430 | kvm->arch.sca = (struct bsca_block *) |
2431 | ((char *) kvm->arch.sca + sca_offset); | |
0d9ce162 | 2432 | mutex_unlock(&kvm_lock); |
b0c632db HC |
2433 | |
2434 | sprintf(debug_name, "kvm-%u", current->pid); | |
2435 | ||
1cb9cf72 | 2436 | kvm->arch.dbf = debug_register(debug_name, 32, 1, 7 * sizeof(long)); |
b0c632db | 2437 | if (!kvm->arch.dbf) |
40f5b735 | 2438 | goto out_err; |
b0c632db | 2439 | |
19114beb | 2440 | BUILD_BUG_ON(sizeof(struct sie_page2) != 4096); |
c54f0d6a DH |
2441 | kvm->arch.sie_page2 = |
2442 | (struct sie_page2 *) get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
2443 | if (!kvm->arch.sie_page2) | |
40f5b735 | 2444 | goto out_err; |
9d8d5786 | 2445 | |
25c84dba | 2446 | kvm->arch.sie_page2->kvm = kvm; |
c54f0d6a | 2447 | kvm->arch.model.fac_list = kvm->arch.sie_page2->fac_list; |
c3b9e3e1 CB |
2448 | |
2449 | for (i = 0; i < kvm_s390_fac_size(); i++) { | |
2450 | kvm->arch.model.fac_mask[i] = S390_lowcore.stfle_fac_list[i] & | |
2451 | (kvm_s390_fac_base[i] | | |
2452 | kvm_s390_fac_ext[i]); | |
2453 | kvm->arch.model.fac_list[i] = S390_lowcore.stfle_fac_list[i] & | |
2454 | kvm_s390_fac_base[i]; | |
2455 | } | |
346fa2f8 | 2456 | kvm->arch.model.subfuncs = kvm_s390_available_subfunc; |
981467c9 | 2457 | |
1935222d DH |
2458 | /* we are always in czam mode - even on pre z14 machines */ |
2459 | set_kvm_facility(kvm->arch.model.fac_mask, 138); | |
2460 | set_kvm_facility(kvm->arch.model.fac_list, 138); | |
2461 | /* we emulate STHYI in kvm */ | |
95ca2cb5 JF |
2462 | set_kvm_facility(kvm->arch.model.fac_mask, 74); |
2463 | set_kvm_facility(kvm->arch.model.fac_list, 74); | |
1bab1c02 CI |
2464 | if (MACHINE_HAS_TLB_GUEST) { |
2465 | set_kvm_facility(kvm->arch.model.fac_mask, 147); | |
2466 | set_kvm_facility(kvm->arch.model.fac_list, 147); | |
2467 | } | |
95ca2cb5 | 2468 | |
05f31e3b PM |
2469 | if (css_general_characteristics.aiv && test_facility(65)) |
2470 | set_kvm_facility(kvm->arch.model.fac_mask, 65); | |
2471 | ||
9bb0ec09 | 2472 | kvm->arch.model.cpuid = kvm_s390_get_initial_cpuid(); |
37c5f6c8 | 2473 | kvm->arch.model.ibc = sclp.ibc & 0x0fff; |
9d8d5786 | 2474 | |
c54f0d6a | 2475 | kvm_s390_crypto_init(kvm); |
5102ee87 | 2476 | |
51978393 | 2477 | mutex_init(&kvm->arch.float_int.ais_lock); |
ba5c1e9b | 2478 | spin_lock_init(&kvm->arch.float_int.lock); |
6d3da241 JF |
2479 | for (i = 0; i < FIRQ_LIST_COUNT; i++) |
2480 | INIT_LIST_HEAD(&kvm->arch.float_int.lists[i]); | |
8a242234 | 2481 | init_waitqueue_head(&kvm->arch.ipte_wq); |
a6b7e459 | 2482 | mutex_init(&kvm->arch.ipte_mutex); |
ba5c1e9b | 2483 | |
b0c632db | 2484 | debug_register_view(kvm->arch.dbf, &debug_sprintf_view); |
78f26131 | 2485 | VM_EVENT(kvm, 3, "vm created with type %lu", type); |
b0c632db | 2486 | |
e08b9637 CO |
2487 | if (type & KVM_VM_S390_UCONTROL) { |
2488 | kvm->arch.gmap = NULL; | |
a3a92c31 | 2489 | kvm->arch.mem_limit = KVM_S390_NO_MEM_LIMIT; |
e08b9637 | 2490 | } else { |
32e6b236 | 2491 | if (sclp.hamax == U64_MAX) |
ee71d16d | 2492 | kvm->arch.mem_limit = TASK_SIZE_MAX; |
32e6b236 | 2493 | else |
ee71d16d | 2494 | kvm->arch.mem_limit = min_t(unsigned long, TASK_SIZE_MAX, |
32e6b236 | 2495 | sclp.hamax + 1); |
6ea427bb | 2496 | kvm->arch.gmap = gmap_create(current->mm, kvm->arch.mem_limit - 1); |
e08b9637 | 2497 | if (!kvm->arch.gmap) |
40f5b735 | 2498 | goto out_err; |
2c70fe44 | 2499 | kvm->arch.gmap->private = kvm; |
24eb3a82 | 2500 | kvm->arch.gmap->pfault_enabled = 0; |
e08b9637 | 2501 | } |
fa6b7fe9 | 2502 | |
c9f0a2b8 | 2503 | kvm->arch.use_pfmfi = sclp.has_pfmfi; |
55531b74 | 2504 | kvm->arch.use_skf = sclp.has_skey; |
8ad35755 | 2505 | spin_lock_init(&kvm->arch.start_stop_lock); |
a3508fbe | 2506 | kvm_s390_vsie_init(kvm); |
d7c5cb01 | 2507 | kvm_s390_gisa_init(kvm); |
8335713a | 2508 | KVM_EVENT(3, "vm 0x%pK created by pid %u", kvm, current->pid); |
8ad35755 | 2509 | |
d89f5eff | 2510 | return 0; |
40f5b735 | 2511 | out_err: |
c54f0d6a | 2512 | free_page((unsigned long)kvm->arch.sie_page2); |
598841ca | 2513 | debug_unregister(kvm->arch.dbf); |
7d43bafc | 2514 | sca_dispose(kvm); |
78f26131 | 2515 | KVM_EVENT(3, "creation of vm failed: %d", rc); |
d89f5eff | 2516 | return rc; |
b0c632db HC |
2517 | } |
2518 | ||
d329c035 CB |
2519 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) |
2520 | { | |
2521 | VCPU_EVENT(vcpu, 3, "%s", "free cpu"); | |
ade38c31 | 2522 | trace_kvm_s390_destroy_vcpu(vcpu->vcpu_id); |
67335e63 | 2523 | kvm_s390_clear_local_irqs(vcpu); |
3c038e6b | 2524 | kvm_clear_async_pf_completion_queue(vcpu); |
bc784cce | 2525 | if (!kvm_is_ucontrol(vcpu->kvm)) |
a6e2f683 | 2526 | sca_del_vcpu(vcpu); |
27e0393f CO |
2527 | |
2528 | if (kvm_is_ucontrol(vcpu->kvm)) | |
6ea427bb | 2529 | gmap_remove(vcpu->arch.gmap); |
27e0393f | 2530 | |
e6db1d61 | 2531 | if (vcpu->kvm->arch.use_cmma) |
b31605c1 | 2532 | kvm_s390_vcpu_unsetup_cmma(vcpu); |
d329c035 | 2533 | free_page((unsigned long)(vcpu->arch.sie_block)); |
d329c035 CB |
2534 | } |
2535 | ||
2536 | static void kvm_free_vcpus(struct kvm *kvm) | |
2537 | { | |
2538 | unsigned int i; | |
988a2cae | 2539 | struct kvm_vcpu *vcpu; |
d329c035 | 2540 | |
988a2cae | 2541 | kvm_for_each_vcpu(i, vcpu, kvm) |
4543bdc0 | 2542 | kvm_vcpu_destroy(vcpu); |
988a2cae GN |
2543 | |
2544 | mutex_lock(&kvm->lock); | |
2545 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
2546 | kvm->vcpus[i] = NULL; | |
2547 | ||
2548 | atomic_set(&kvm->online_vcpus, 0); | |
2549 | mutex_unlock(&kvm->lock); | |
d329c035 CB |
2550 | } |
2551 | ||
b0c632db HC |
2552 | void kvm_arch_destroy_vm(struct kvm *kvm) |
2553 | { | |
d329c035 | 2554 | kvm_free_vcpus(kvm); |
7d43bafc | 2555 | sca_dispose(kvm); |
d329c035 | 2556 | debug_unregister(kvm->arch.dbf); |
d7c5cb01 | 2557 | kvm_s390_gisa_destroy(kvm); |
c54f0d6a | 2558 | free_page((unsigned long)kvm->arch.sie_page2); |
27e0393f | 2559 | if (!kvm_is_ucontrol(kvm)) |
6ea427bb | 2560 | gmap_remove(kvm->arch.gmap); |
841b91c5 | 2561 | kvm_s390_destroy_adapters(kvm); |
67335e63 | 2562 | kvm_s390_clear_float_irqs(kvm); |
a3508fbe | 2563 | kvm_s390_vsie_destroy(kvm); |
8335713a | 2564 | KVM_EVENT(3, "vm 0x%pK destroyed", kvm); |
b0c632db HC |
2565 | } |
2566 | ||
2567 | /* Section: vcpu related */ | |
dafd032a DD |
2568 | static int __kvm_ucontrol_vcpu_init(struct kvm_vcpu *vcpu) |
2569 | { | |
6ea427bb | 2570 | vcpu->arch.gmap = gmap_create(current->mm, -1UL); |
dafd032a DD |
2571 | if (!vcpu->arch.gmap) |
2572 | return -ENOMEM; | |
2573 | vcpu->arch.gmap->private = vcpu->kvm; | |
2574 | ||
2575 | return 0; | |
2576 | } | |
2577 | ||
a6e2f683 ED |
2578 | static void sca_del_vcpu(struct kvm_vcpu *vcpu) |
2579 | { | |
a6940674 DH |
2580 | if (!kvm_s390_use_sca_entries()) |
2581 | return; | |
5e044315 | 2582 | read_lock(&vcpu->kvm->arch.sca_lock); |
7d43bafc ED |
2583 | if (vcpu->kvm->arch.use_esca) { |
2584 | struct esca_block *sca = vcpu->kvm->arch.sca; | |
a6e2f683 | 2585 | |
7d43bafc | 2586 | clear_bit_inv(vcpu->vcpu_id, (unsigned long *) sca->mcn); |
10ce32d5 | 2587 | sca->cpu[vcpu->vcpu_id].sda = 0; |
7d43bafc ED |
2588 | } else { |
2589 | struct bsca_block *sca = vcpu->kvm->arch.sca; | |
2590 | ||
2591 | clear_bit_inv(vcpu->vcpu_id, (unsigned long *) &sca->mcn); | |
10ce32d5 | 2592 | sca->cpu[vcpu->vcpu_id].sda = 0; |
7d43bafc | 2593 | } |
5e044315 | 2594 | read_unlock(&vcpu->kvm->arch.sca_lock); |
a6e2f683 ED |
2595 | } |
2596 | ||
eaa78f34 | 2597 | static void sca_add_vcpu(struct kvm_vcpu *vcpu) |
a6e2f683 | 2598 | { |
a6940674 DH |
2599 | if (!kvm_s390_use_sca_entries()) { |
2600 | struct bsca_block *sca = vcpu->kvm->arch.sca; | |
2601 | ||
2602 | /* we still need the basic sca for the ipte control */ | |
2603 | vcpu->arch.sie_block->scaoh = (__u32)(((__u64)sca) >> 32); | |
2604 | vcpu->arch.sie_block->scaol = (__u32)(__u64)sca; | |
f07afa04 | 2605 | return; |
a6940674 | 2606 | } |
eaa78f34 DH |
2607 | read_lock(&vcpu->kvm->arch.sca_lock); |
2608 | if (vcpu->kvm->arch.use_esca) { | |
2609 | struct esca_block *sca = vcpu->kvm->arch.sca; | |
7d43bafc | 2610 | |
eaa78f34 | 2611 | sca->cpu[vcpu->vcpu_id].sda = (__u64) vcpu->arch.sie_block; |
7d43bafc ED |
2612 | vcpu->arch.sie_block->scaoh = (__u32)(((__u64)sca) >> 32); |
2613 | vcpu->arch.sie_block->scaol = (__u32)(__u64)sca & ~0x3fU; | |
0c9d8683 | 2614 | vcpu->arch.sie_block->ecb2 |= ECB2_ESCA; |
eaa78f34 | 2615 | set_bit_inv(vcpu->vcpu_id, (unsigned long *) sca->mcn); |
7d43bafc | 2616 | } else { |
eaa78f34 | 2617 | struct bsca_block *sca = vcpu->kvm->arch.sca; |
a6e2f683 | 2618 | |
eaa78f34 | 2619 | sca->cpu[vcpu->vcpu_id].sda = (__u64) vcpu->arch.sie_block; |
7d43bafc ED |
2620 | vcpu->arch.sie_block->scaoh = (__u32)(((__u64)sca) >> 32); |
2621 | vcpu->arch.sie_block->scaol = (__u32)(__u64)sca; | |
eaa78f34 | 2622 | set_bit_inv(vcpu->vcpu_id, (unsigned long *) &sca->mcn); |
7d43bafc | 2623 | } |
eaa78f34 | 2624 | read_unlock(&vcpu->kvm->arch.sca_lock); |
5e044315 ED |
2625 | } |
2626 | ||
2627 | /* Basic SCA to Extended SCA data copy routines */ | |
2628 | static inline void sca_copy_entry(struct esca_entry *d, struct bsca_entry *s) | |
2629 | { | |
2630 | d->sda = s->sda; | |
2631 | d->sigp_ctrl.c = s->sigp_ctrl.c; | |
2632 | d->sigp_ctrl.scn = s->sigp_ctrl.scn; | |
2633 | } | |
2634 | ||
2635 | static void sca_copy_b_to_e(struct esca_block *d, struct bsca_block *s) | |
2636 | { | |
2637 | int i; | |
2638 | ||
2639 | d->ipte_control = s->ipte_control; | |
2640 | d->mcn[0] = s->mcn; | |
2641 | for (i = 0; i < KVM_S390_BSCA_CPU_SLOTS; i++) | |
2642 | sca_copy_entry(&d->cpu[i], &s->cpu[i]); | |
2643 | } | |
2644 | ||
2645 | static int sca_switch_to_extended(struct kvm *kvm) | |
2646 | { | |
2647 | struct bsca_block *old_sca = kvm->arch.sca; | |
2648 | struct esca_block *new_sca; | |
2649 | struct kvm_vcpu *vcpu; | |
2650 | unsigned int vcpu_idx; | |
2651 | u32 scaol, scaoh; | |
2652 | ||
2653 | new_sca = alloc_pages_exact(sizeof(*new_sca), GFP_KERNEL|__GFP_ZERO); | |
2654 | if (!new_sca) | |
2655 | return -ENOMEM; | |
2656 | ||
2657 | scaoh = (u32)((u64)(new_sca) >> 32); | |
2658 | scaol = (u32)(u64)(new_sca) & ~0x3fU; | |
2659 | ||
2660 | kvm_s390_vcpu_block_all(kvm); | |
2661 | write_lock(&kvm->arch.sca_lock); | |
2662 | ||
2663 | sca_copy_b_to_e(new_sca, old_sca); | |
2664 | ||
2665 | kvm_for_each_vcpu(vcpu_idx, vcpu, kvm) { | |
2666 | vcpu->arch.sie_block->scaoh = scaoh; | |
2667 | vcpu->arch.sie_block->scaol = scaol; | |
0c9d8683 | 2668 | vcpu->arch.sie_block->ecb2 |= ECB2_ESCA; |
5e044315 ED |
2669 | } |
2670 | kvm->arch.sca = new_sca; | |
2671 | kvm->arch.use_esca = 1; | |
2672 | ||
2673 | write_unlock(&kvm->arch.sca_lock); | |
2674 | kvm_s390_vcpu_unblock_all(kvm); | |
2675 | ||
2676 | free_page((unsigned long)old_sca); | |
2677 | ||
8335713a CB |
2678 | VM_EVENT(kvm, 2, "Switched to ESCA (0x%pK -> 0x%pK)", |
2679 | old_sca, kvm->arch.sca); | |
5e044315 | 2680 | return 0; |
a6e2f683 ED |
2681 | } |
2682 | ||
2683 | static int sca_can_add_vcpu(struct kvm *kvm, unsigned int id) | |
2684 | { | |
5e044315 ED |
2685 | int rc; |
2686 | ||
a6940674 DH |
2687 | if (!kvm_s390_use_sca_entries()) { |
2688 | if (id < KVM_MAX_VCPUS) | |
2689 | return true; | |
2690 | return false; | |
2691 | } | |
5e044315 ED |
2692 | if (id < KVM_S390_BSCA_CPU_SLOTS) |
2693 | return true; | |
76a6dd72 | 2694 | if (!sclp.has_esca || !sclp.has_64bscao) |
5e044315 ED |
2695 | return false; |
2696 | ||
2697 | mutex_lock(&kvm->lock); | |
2698 | rc = kvm->arch.use_esca ? 0 : sca_switch_to_extended(kvm); | |
2699 | mutex_unlock(&kvm->lock); | |
2700 | ||
2701 | return rc == 0 && id < KVM_S390_ESCA_CPU_SLOTS; | |
a6e2f683 ED |
2702 | } |
2703 | ||
db0758b2 DH |
2704 | /* needs disabled preemption to protect from TOD sync and vcpu_load/put */ |
2705 | static void __start_cpu_timer_accounting(struct kvm_vcpu *vcpu) | |
2706 | { | |
2707 | WARN_ON_ONCE(vcpu->arch.cputm_start != 0); | |
9c23a131 | 2708 | raw_write_seqcount_begin(&vcpu->arch.cputm_seqcount); |
db0758b2 | 2709 | vcpu->arch.cputm_start = get_tod_clock_fast(); |
9c23a131 | 2710 | raw_write_seqcount_end(&vcpu->arch.cputm_seqcount); |
db0758b2 DH |
2711 | } |
2712 | ||
2713 | /* needs disabled preemption to protect from TOD sync and vcpu_load/put */ | |
2714 | static void __stop_cpu_timer_accounting(struct kvm_vcpu *vcpu) | |
2715 | { | |
2716 | WARN_ON_ONCE(vcpu->arch.cputm_start == 0); | |
9c23a131 | 2717 | raw_write_seqcount_begin(&vcpu->arch.cputm_seqcount); |
db0758b2 DH |
2718 | vcpu->arch.sie_block->cputm -= get_tod_clock_fast() - vcpu->arch.cputm_start; |
2719 | vcpu->arch.cputm_start = 0; | |
9c23a131 | 2720 | raw_write_seqcount_end(&vcpu->arch.cputm_seqcount); |
db0758b2 DH |
2721 | } |
2722 | ||
2723 | /* needs disabled preemption to protect from TOD sync and vcpu_load/put */ | |
2724 | static void __enable_cpu_timer_accounting(struct kvm_vcpu *vcpu) | |
2725 | { | |
2726 | WARN_ON_ONCE(vcpu->arch.cputm_enabled); | |
2727 | vcpu->arch.cputm_enabled = true; | |
2728 | __start_cpu_timer_accounting(vcpu); | |
2729 | } | |
2730 | ||
2731 | /* needs disabled preemption to protect from TOD sync and vcpu_load/put */ | |
2732 | static void __disable_cpu_timer_accounting(struct kvm_vcpu *vcpu) | |
2733 | { | |
2734 | WARN_ON_ONCE(!vcpu->arch.cputm_enabled); | |
2735 | __stop_cpu_timer_accounting(vcpu); | |
2736 | vcpu->arch.cputm_enabled = false; | |
2737 | } | |
2738 | ||
2739 | static void enable_cpu_timer_accounting(struct kvm_vcpu *vcpu) | |
2740 | { | |
2741 | preempt_disable(); /* protect from TOD sync and vcpu_load/put */ | |
2742 | __enable_cpu_timer_accounting(vcpu); | |
2743 | preempt_enable(); | |
2744 | } | |
2745 | ||
2746 | static void disable_cpu_timer_accounting(struct kvm_vcpu *vcpu) | |
2747 | { | |
2748 | preempt_disable(); /* protect from TOD sync and vcpu_load/put */ | |
2749 | __disable_cpu_timer_accounting(vcpu); | |
2750 | preempt_enable(); | |
2751 | } | |
2752 | ||
4287f247 DH |
2753 | /* set the cpu timer - may only be called from the VCPU thread itself */ |
2754 | void kvm_s390_set_cpu_timer(struct kvm_vcpu *vcpu, __u64 cputm) | |
2755 | { | |
db0758b2 | 2756 | preempt_disable(); /* protect from TOD sync and vcpu_load/put */ |
9c23a131 | 2757 | raw_write_seqcount_begin(&vcpu->arch.cputm_seqcount); |
db0758b2 DH |
2758 | if (vcpu->arch.cputm_enabled) |
2759 | vcpu->arch.cputm_start = get_tod_clock_fast(); | |
4287f247 | 2760 | vcpu->arch.sie_block->cputm = cputm; |
9c23a131 | 2761 | raw_write_seqcount_end(&vcpu->arch.cputm_seqcount); |
db0758b2 | 2762 | preempt_enable(); |
4287f247 DH |
2763 | } |
2764 | ||
db0758b2 | 2765 | /* update and get the cpu timer - can also be called from other VCPU threads */ |
4287f247 DH |
2766 | __u64 kvm_s390_get_cpu_timer(struct kvm_vcpu *vcpu) |
2767 | { | |
9c23a131 | 2768 | unsigned int seq; |
db0758b2 | 2769 | __u64 value; |
db0758b2 DH |
2770 | |
2771 | if (unlikely(!vcpu->arch.cputm_enabled)) | |
2772 | return vcpu->arch.sie_block->cputm; | |
2773 | ||
9c23a131 DH |
2774 | preempt_disable(); /* protect from TOD sync and vcpu_load/put */ |
2775 | do { | |
2776 | seq = raw_read_seqcount(&vcpu->arch.cputm_seqcount); | |
2777 | /* | |
2778 | * If the writer would ever execute a read in the critical | |
2779 | * section, e.g. in irq context, we have a deadlock. | |
2780 | */ | |
2781 | WARN_ON_ONCE((seq & 1) && smp_processor_id() == vcpu->cpu); | |
2782 | value = vcpu->arch.sie_block->cputm; | |
2783 | /* if cputm_start is 0, accounting is being started/stopped */ | |
2784 | if (likely(vcpu->arch.cputm_start)) | |
2785 | value -= get_tod_clock_fast() - vcpu->arch.cputm_start; | |
2786 | } while (read_seqcount_retry(&vcpu->arch.cputm_seqcount, seq & ~1)); | |
2787 | preempt_enable(); | |
db0758b2 | 2788 | return value; |
4287f247 DH |
2789 | } |
2790 | ||
b0c632db HC |
2791 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
2792 | { | |
9977e886 | 2793 | |
37d9df98 | 2794 | gmap_enable(vcpu->arch.enabled_gmap); |
ef8f4f49 | 2795 | kvm_s390_set_cpuflags(vcpu, CPUSTAT_RUNNING); |
5ebda316 | 2796 | if (vcpu->arch.cputm_enabled && !is_vcpu_idle(vcpu)) |
db0758b2 | 2797 | __start_cpu_timer_accounting(vcpu); |
01a745ac | 2798 | vcpu->cpu = cpu; |
b0c632db HC |
2799 | } |
2800 | ||
2801 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
2802 | { | |
01a745ac | 2803 | vcpu->cpu = -1; |
5ebda316 | 2804 | if (vcpu->arch.cputm_enabled && !is_vcpu_idle(vcpu)) |
db0758b2 | 2805 | __stop_cpu_timer_accounting(vcpu); |
9daecfc6 | 2806 | kvm_s390_clear_cpuflags(vcpu, CPUSTAT_RUNNING); |
37d9df98 DH |
2807 | vcpu->arch.enabled_gmap = gmap_get_enabled(); |
2808 | gmap_disable(vcpu->arch.enabled_gmap); | |
9977e886 | 2809 | |
b0c632db HC |
2810 | } |
2811 | ||
31928aa5 | 2812 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
42897d86 | 2813 | { |
72f25020 | 2814 | mutex_lock(&vcpu->kvm->lock); |
fdf03650 | 2815 | preempt_disable(); |
72f25020 | 2816 | vcpu->arch.sie_block->epoch = vcpu->kvm->arch.epoch; |
d16b52cb | 2817 | vcpu->arch.sie_block->epdx = vcpu->kvm->arch.epdx; |
fdf03650 | 2818 | preempt_enable(); |
72f25020 | 2819 | mutex_unlock(&vcpu->kvm->lock); |
25508824 | 2820 | if (!kvm_is_ucontrol(vcpu->kvm)) { |
dafd032a | 2821 | vcpu->arch.gmap = vcpu->kvm->arch.gmap; |
eaa78f34 | 2822 | sca_add_vcpu(vcpu); |
25508824 | 2823 | } |
6502a34c DH |
2824 | if (test_kvm_facility(vcpu->kvm, 74) || vcpu->kvm->arch.user_instr0) |
2825 | vcpu->arch.sie_block->ictl |= ICTL_OPEREXC; | |
37d9df98 DH |
2826 | /* make vcpu_load load the right gmap on the first trigger */ |
2827 | vcpu->arch.enabled_gmap = vcpu->arch.gmap; | |
42897d86 MT |
2828 | } |
2829 | ||
8ec2fa52 CB |
2830 | static bool kvm_has_pckmo_subfunc(struct kvm *kvm, unsigned long nr) |
2831 | { | |
2832 | if (test_bit_inv(nr, (unsigned long *)&kvm->arch.model.subfuncs.pckmo) && | |
2833 | test_bit_inv(nr, (unsigned long *)&kvm_s390_available_subfunc.pckmo)) | |
2834 | return true; | |
2835 | return false; | |
2836 | } | |
2837 | ||
2838 | static bool kvm_has_pckmo_ecc(struct kvm *kvm) | |
2839 | { | |
2840 | /* At least one ECC subfunction must be present */ | |
2841 | return kvm_has_pckmo_subfunc(kvm, 32) || | |
2842 | kvm_has_pckmo_subfunc(kvm, 33) || | |
2843 | kvm_has_pckmo_subfunc(kvm, 34) || | |
2844 | kvm_has_pckmo_subfunc(kvm, 40) || | |
2845 | kvm_has_pckmo_subfunc(kvm, 41); | |
2846 | ||
2847 | } | |
2848 | ||
5102ee87 TK |
2849 | static void kvm_s390_vcpu_crypto_setup(struct kvm_vcpu *vcpu) |
2850 | { | |
e585b24a TK |
2851 | /* |
2852 | * If the AP instructions are not being interpreted and the MSAX3 | |
2853 | * facility is not configured for the guest, there is nothing to set up. | |
2854 | */ | |
2855 | if (!vcpu->kvm->arch.crypto.apie && !test_kvm_facility(vcpu->kvm, 76)) | |
5102ee87 TK |
2856 | return; |
2857 | ||
e585b24a | 2858 | vcpu->arch.sie_block->crycbd = vcpu->kvm->arch.crypto.crycbd; |
a374e892 | 2859 | vcpu->arch.sie_block->ecb3 &= ~(ECB3_AES | ECB3_DEA); |
37940fb0 | 2860 | vcpu->arch.sie_block->eca &= ~ECA_APIE; |
8ec2fa52 | 2861 | vcpu->arch.sie_block->ecd &= ~ECD_ECC; |
a374e892 | 2862 | |
e585b24a TK |
2863 | if (vcpu->kvm->arch.crypto.apie) |
2864 | vcpu->arch.sie_block->eca |= ECA_APIE; | |
a374e892 | 2865 | |
e585b24a | 2866 | /* Set up protected key support */ |
8ec2fa52 | 2867 | if (vcpu->kvm->arch.crypto.aes_kw) { |
a374e892 | 2868 | vcpu->arch.sie_block->ecb3 |= ECB3_AES; |
8ec2fa52 CB |
2869 | /* ecc is also wrapped with AES key */ |
2870 | if (kvm_has_pckmo_ecc(vcpu->kvm)) | |
2871 | vcpu->arch.sie_block->ecd |= ECD_ECC; | |
2872 | } | |
2873 | ||
a374e892 TK |
2874 | if (vcpu->kvm->arch.crypto.dea_kw) |
2875 | vcpu->arch.sie_block->ecb3 |= ECB3_DEA; | |
5102ee87 TK |
2876 | } |
2877 | ||
b31605c1 DD |
2878 | void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu) |
2879 | { | |
2880 | free_page(vcpu->arch.sie_block->cbrlo); | |
2881 | vcpu->arch.sie_block->cbrlo = 0; | |
2882 | } | |
2883 | ||
2884 | int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu) | |
2885 | { | |
2886 | vcpu->arch.sie_block->cbrlo = get_zeroed_page(GFP_KERNEL); | |
2887 | if (!vcpu->arch.sie_block->cbrlo) | |
2888 | return -ENOMEM; | |
b31605c1 DD |
2889 | return 0; |
2890 | } | |
2891 | ||
91520f1a MM |
2892 | static void kvm_s390_vcpu_setup_model(struct kvm_vcpu *vcpu) |
2893 | { | |
2894 | struct kvm_s390_cpu_model *model = &vcpu->kvm->arch.model; | |
2895 | ||
91520f1a | 2896 | vcpu->arch.sie_block->ibc = model->ibc; |
80bc79dc | 2897 | if (test_kvm_facility(vcpu->kvm, 7)) |
c54f0d6a | 2898 | vcpu->arch.sie_block->fac = (u32)(u64) model->fac_list; |
91520f1a MM |
2899 | } |
2900 | ||
ff72bb55 | 2901 | static int kvm_s390_vcpu_setup(struct kvm_vcpu *vcpu) |
b0c632db | 2902 | { |
b31605c1 | 2903 | int rc = 0; |
b31288fa | 2904 | |
9e6dabef CH |
2905 | atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH | |
2906 | CPUSTAT_SM | | |
a4a4f191 GH |
2907 | CPUSTAT_STOPPED); |
2908 | ||
53df84f8 | 2909 | if (test_kvm_facility(vcpu->kvm, 78)) |
ef8f4f49 | 2910 | kvm_s390_set_cpuflags(vcpu, CPUSTAT_GED2); |
53df84f8 | 2911 | else if (test_kvm_facility(vcpu->kvm, 8)) |
ef8f4f49 | 2912 | kvm_s390_set_cpuflags(vcpu, CPUSTAT_GED); |
a4a4f191 | 2913 | |
91520f1a MM |
2914 | kvm_s390_vcpu_setup_model(vcpu); |
2915 | ||
bdab09f3 DH |
2916 | /* pgste_set_pte has special handling for !MACHINE_HAS_ESOP */ |
2917 | if (MACHINE_HAS_ESOP) | |
0c9d8683 | 2918 | vcpu->arch.sie_block->ecb |= ECB_HOSTPROTINT; |
bd50e8ec | 2919 | if (test_kvm_facility(vcpu->kvm, 9)) |
0c9d8683 | 2920 | vcpu->arch.sie_block->ecb |= ECB_SRSI; |
f597d24e | 2921 | if (test_kvm_facility(vcpu->kvm, 73)) |
0c9d8683 | 2922 | vcpu->arch.sie_block->ecb |= ECB_TE; |
7feb6bb8 | 2923 | |
c9f0a2b8 | 2924 | if (test_kvm_facility(vcpu->kvm, 8) && vcpu->kvm->arch.use_pfmfi) |
0c9d8683 | 2925 | vcpu->arch.sie_block->ecb2 |= ECB2_PFMFI; |
cd1836f5 | 2926 | if (test_kvm_facility(vcpu->kvm, 130)) |
0c9d8683 DH |
2927 | vcpu->arch.sie_block->ecb2 |= ECB2_IEP; |
2928 | vcpu->arch.sie_block->eca = ECA_MVPGI | ECA_PROTEXCI; | |
48ee7d3a | 2929 | if (sclp.has_cei) |
0c9d8683 | 2930 | vcpu->arch.sie_block->eca |= ECA_CEI; |
11ad65b7 | 2931 | if (sclp.has_ib) |
0c9d8683 | 2932 | vcpu->arch.sie_block->eca |= ECA_IB; |
37c5f6c8 | 2933 | if (sclp.has_siif) |
0c9d8683 | 2934 | vcpu->arch.sie_block->eca |= ECA_SII; |
37c5f6c8 | 2935 | if (sclp.has_sigpif) |
0c9d8683 | 2936 | vcpu->arch.sie_block->eca |= ECA_SIGPI; |
18280d8b | 2937 | if (test_kvm_facility(vcpu->kvm, 129)) { |
0c9d8683 DH |
2938 | vcpu->arch.sie_block->eca |= ECA_VX; |
2939 | vcpu->arch.sie_block->ecd |= ECD_HOSTREGMGMT; | |
13211ea7 | 2940 | } |
8fa1696e CW |
2941 | if (test_kvm_facility(vcpu->kvm, 139)) |
2942 | vcpu->arch.sie_block->ecd |= ECD_MEF; | |
a3da7b4a CB |
2943 | if (test_kvm_facility(vcpu->kvm, 156)) |
2944 | vcpu->arch.sie_block->ecd |= ECD_ETOKENF; | |
d7c5cb01 MM |
2945 | if (vcpu->arch.sie_block->gd) { |
2946 | vcpu->arch.sie_block->eca |= ECA_AIV; | |
2947 | VCPU_EVENT(vcpu, 3, "AIV gisa format-%u enabled for cpu %03u", | |
2948 | vcpu->arch.sie_block->gd & 0x3, vcpu->vcpu_id); | |
2949 | } | |
4e0b1ab7 FZ |
2950 | vcpu->arch.sie_block->sdnxo = ((unsigned long) &vcpu->run->s.regs.sdnx) |
2951 | | SDNXC; | |
c6e5f166 | 2952 | vcpu->arch.sie_block->riccbd = (unsigned long) &vcpu->run->s.regs.riccb; |
730cd632 FA |
2953 | |
2954 | if (sclp.has_kss) | |
ef8f4f49 | 2955 | kvm_s390_set_cpuflags(vcpu, CPUSTAT_KSS); |
730cd632 FA |
2956 | else |
2957 | vcpu->arch.sie_block->ictl |= ICTL_ISKE | ICTL_SSKE | ICTL_RRBE; | |
5a5e6536 | 2958 | |
e6db1d61 | 2959 | if (vcpu->kvm->arch.use_cmma) { |
b31605c1 DD |
2960 | rc = kvm_s390_vcpu_setup_cmma(vcpu); |
2961 | if (rc) | |
2962 | return rc; | |
b31288fa | 2963 | } |
0ac96caf | 2964 | hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); |
ca872302 | 2965 | vcpu->arch.ckc_timer.function = kvm_s390_idle_wakeup; |
9d8d5786 | 2966 | |
67d49d52 CW |
2967 | vcpu->arch.sie_block->hpid = HPID_KVM; |
2968 | ||
5102ee87 TK |
2969 | kvm_s390_vcpu_crypto_setup(vcpu); |
2970 | ||
b31605c1 | 2971 | return rc; |
b0c632db HC |
2972 | } |
2973 | ||
897cc38e SC |
2974 | int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id) |
2975 | { | |
2976 | if (!kvm_is_ucontrol(kvm) && !sca_can_add_vcpu(kvm, id)) | |
2977 | return -EINVAL; | |
2978 | return 0; | |
2979 | } | |
2980 | ||
e529ef66 | 2981 | int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) |
b0c632db | 2982 | { |
7feb6bb8 | 2983 | struct sie_page *sie_page; |
897cc38e | 2984 | int rc; |
4d47555a | 2985 | |
da72ca4d | 2986 | BUILD_BUG_ON(sizeof(struct sie_page) != 4096); |
7feb6bb8 MM |
2987 | sie_page = (struct sie_page *) get_zeroed_page(GFP_KERNEL); |
2988 | if (!sie_page) | |
e529ef66 | 2989 | return -ENOMEM; |
b0c632db | 2990 | |
7feb6bb8 MM |
2991 | vcpu->arch.sie_block = &sie_page->sie_block; |
2992 | vcpu->arch.sie_block->itdba = (unsigned long) &sie_page->itdb; | |
2993 | ||
efed1104 DH |
2994 | /* the real guest size will always be smaller than msl */ |
2995 | vcpu->arch.sie_block->mso = 0; | |
2996 | vcpu->arch.sie_block->msl = sclp.hamax; | |
2997 | ||
e529ef66 | 2998 | vcpu->arch.sie_block->icpua = vcpu->vcpu_id; |
ba5c1e9b | 2999 | spin_lock_init(&vcpu->arch.local_int.lock); |
e529ef66 | 3000 | vcpu->arch.sie_block->gd = (u32)(u64)vcpu->kvm->arch.gisa_int.origin; |
4b9f9525 MM |
3001 | if (vcpu->arch.sie_block->gd && sclp.has_gisaf) |
3002 | vcpu->arch.sie_block->gd |= GISA_FORMAT1; | |
9c23a131 | 3003 | seqcount_init(&vcpu->arch.cputm_seqcount); |
ba5c1e9b | 3004 | |
321f8ee5 SC |
3005 | vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; |
3006 | kvm_clear_async_pf_completion_queue(vcpu); | |
3007 | vcpu->run->kvm_valid_regs = KVM_SYNC_PREFIX | | |
3008 | KVM_SYNC_GPRS | | |
3009 | KVM_SYNC_ACRS | | |
3010 | KVM_SYNC_CRS | | |
3011 | KVM_SYNC_ARCH0 | | |
3012 | KVM_SYNC_PFAULT; | |
3013 | kvm_s390_set_prefix(vcpu, 0); | |
3014 | if (test_kvm_facility(vcpu->kvm, 64)) | |
3015 | vcpu->run->kvm_valid_regs |= KVM_SYNC_RICCB; | |
3016 | if (test_kvm_facility(vcpu->kvm, 82)) | |
3017 | vcpu->run->kvm_valid_regs |= KVM_SYNC_BPBC; | |
3018 | if (test_kvm_facility(vcpu->kvm, 133)) | |
3019 | vcpu->run->kvm_valid_regs |= KVM_SYNC_GSCB; | |
3020 | if (test_kvm_facility(vcpu->kvm, 156)) | |
3021 | vcpu->run->kvm_valid_regs |= KVM_SYNC_ETOKEN; | |
3022 | /* fprs can be synchronized via vrs, even if the guest has no vx. With | |
3023 | * MACHINE_HAS_VX, (load|store)_fpu_regs() will work with vrs format. | |
3024 | */ | |
3025 | if (MACHINE_HAS_VX) | |
3026 | vcpu->run->kvm_valid_regs |= KVM_SYNC_VRS; | |
3027 | else | |
3028 | vcpu->run->kvm_valid_regs |= KVM_SYNC_FPRS; | |
3029 | ||
3030 | if (kvm_is_ucontrol(vcpu->kvm)) { | |
3031 | rc = __kvm_ucontrol_vcpu_init(vcpu); | |
3032 | if (rc) | |
a2017f17 | 3033 | goto out_free_sie_block; |
321f8ee5 SC |
3034 | } |
3035 | ||
e529ef66 SC |
3036 | VM_EVENT(vcpu->kvm, 3, "create cpu %d at 0x%pK, sie block at 0x%pK", |
3037 | vcpu->vcpu_id, vcpu, vcpu->arch.sie_block); | |
3038 | trace_kvm_s390_create_vcpu(vcpu->vcpu_id, vcpu, vcpu->arch.sie_block); | |
3039 | ||
ff72bb55 SC |
3040 | rc = kvm_s390_vcpu_setup(vcpu); |
3041 | if (rc) | |
3042 | goto out_ucontrol_uninit; | |
e529ef66 | 3043 | return 0; |
b0c632db | 3044 | |
ff72bb55 SC |
3045 | out_ucontrol_uninit: |
3046 | if (kvm_is_ucontrol(vcpu->kvm)) | |
3047 | gmap_remove(vcpu->arch.gmap); | |
7b06bf2f WY |
3048 | out_free_sie_block: |
3049 | free_page((unsigned long)(vcpu->arch.sie_block)); | |
e529ef66 | 3050 | return rc; |
b0c632db HC |
3051 | } |
3052 | ||
b0c632db HC |
3053 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu) |
3054 | { | |
9a022067 | 3055 | return kvm_s390_vcpu_has_irq(vcpu, 0); |
b0c632db HC |
3056 | } |
3057 | ||
199b5763 LM |
3058 | bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu) |
3059 | { | |
0546c63d | 3060 | return !(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE); |
199b5763 LM |
3061 | } |
3062 | ||
27406cd5 | 3063 | void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu) |
49b99e1e | 3064 | { |
805de8f4 | 3065 | atomic_or(PROG_BLOCK_SIE, &vcpu->arch.sie_block->prog20); |
61a6df54 | 3066 | exit_sie(vcpu); |
49b99e1e CB |
3067 | } |
3068 | ||
27406cd5 | 3069 | void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu) |
49b99e1e | 3070 | { |
805de8f4 | 3071 | atomic_andnot(PROG_BLOCK_SIE, &vcpu->arch.sie_block->prog20); |
49b99e1e CB |
3072 | } |
3073 | ||
8e236546 CB |
3074 | static void kvm_s390_vcpu_request(struct kvm_vcpu *vcpu) |
3075 | { | |
805de8f4 | 3076 | atomic_or(PROG_REQUEST, &vcpu->arch.sie_block->prog20); |
61a6df54 | 3077 | exit_sie(vcpu); |
8e236546 CB |
3078 | } |
3079 | ||
9ea59728 DH |
3080 | bool kvm_s390_vcpu_sie_inhibited(struct kvm_vcpu *vcpu) |
3081 | { | |
3082 | return atomic_read(&vcpu->arch.sie_block->prog20) & | |
3083 | (PROG_BLOCK_SIE | PROG_REQUEST); | |
3084 | } | |
3085 | ||
8e236546 CB |
3086 | static void kvm_s390_vcpu_request_handled(struct kvm_vcpu *vcpu) |
3087 | { | |
9bf9fde2 | 3088 | atomic_andnot(PROG_REQUEST, &vcpu->arch.sie_block->prog20); |
8e236546 CB |
3089 | } |
3090 | ||
49b99e1e | 3091 | /* |
9ea59728 | 3092 | * Kick a guest cpu out of (v)SIE and wait until (v)SIE is not running. |
49b99e1e CB |
3093 | * If the CPU is not running (e.g. waiting as idle) the function will |
3094 | * return immediately. */ | |
3095 | void exit_sie(struct kvm_vcpu *vcpu) | |
3096 | { | |
ef8f4f49 | 3097 | kvm_s390_set_cpuflags(vcpu, CPUSTAT_STOP_INT); |
9ea59728 | 3098 | kvm_s390_vsie_kick(vcpu); |
49b99e1e CB |
3099 | while (vcpu->arch.sie_block->prog0c & PROG_IN_SIE) |
3100 | cpu_relax(); | |
3101 | } | |
3102 | ||
8e236546 CB |
3103 | /* Kick a guest cpu out of SIE to process a request synchronously */ |
3104 | void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu) | |
49b99e1e | 3105 | { |
8e236546 CB |
3106 | kvm_make_request(req, vcpu); |
3107 | kvm_s390_vcpu_request(vcpu); | |
49b99e1e CB |
3108 | } |
3109 | ||
414d3b07 MS |
3110 | static void kvm_gmap_notifier(struct gmap *gmap, unsigned long start, |
3111 | unsigned long end) | |
2c70fe44 | 3112 | { |
2c70fe44 CB |
3113 | struct kvm *kvm = gmap->private; |
3114 | struct kvm_vcpu *vcpu; | |
414d3b07 MS |
3115 | unsigned long prefix; |
3116 | int i; | |
2c70fe44 | 3117 | |
65d0b0d4 DH |
3118 | if (gmap_is_shadow(gmap)) |
3119 | return; | |
414d3b07 MS |
3120 | if (start >= 1UL << 31) |
3121 | /* We are only interested in prefix pages */ | |
3122 | return; | |
2c70fe44 CB |
3123 | kvm_for_each_vcpu(i, vcpu, kvm) { |
3124 | /* match against both prefix pages */ | |
414d3b07 MS |
3125 | prefix = kvm_s390_get_prefix(vcpu); |
3126 | if (prefix <= end && start <= prefix + 2*PAGE_SIZE - 1) { | |
3127 | VCPU_EVENT(vcpu, 2, "gmap notifier for %lx-%lx", | |
3128 | start, end); | |
8e236546 | 3129 | kvm_s390_sync_request(KVM_REQ_MMU_RELOAD, vcpu); |
2c70fe44 CB |
3130 | } |
3131 | } | |
3132 | } | |
3133 | ||
8b905d28 CB |
3134 | bool kvm_arch_no_poll(struct kvm_vcpu *vcpu) |
3135 | { | |
3136 | /* do not poll with more than halt_poll_max_steal percent of steal time */ | |
3137 | if (S390_lowcore.avg_steal_timer * 100 / (TICK_USEC << 12) >= | |
3138 | halt_poll_max_steal) { | |
3139 | vcpu->stat.halt_no_poll_steal++; | |
3140 | return true; | |
3141 | } | |
3142 | return false; | |
3143 | } | |
3144 | ||
b6d33834 CD |
3145 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
3146 | { | |
3147 | /* kvm common code refers to this, but never calls it */ | |
3148 | BUG(); | |
3149 | return 0; | |
3150 | } | |
3151 | ||
14eebd91 CO |
3152 | static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, |
3153 | struct kvm_one_reg *reg) | |
3154 | { | |
3155 | int r = -EINVAL; | |
3156 | ||
3157 | switch (reg->id) { | |
29b7c71b CO |
3158 | case KVM_REG_S390_TODPR: |
3159 | r = put_user(vcpu->arch.sie_block->todpr, | |
3160 | (u32 __user *)reg->addr); | |
3161 | break; | |
3162 | case KVM_REG_S390_EPOCHDIFF: | |
3163 | r = put_user(vcpu->arch.sie_block->epoch, | |
3164 | (u64 __user *)reg->addr); | |
3165 | break; | |
46a6dd1c | 3166 | case KVM_REG_S390_CPU_TIMER: |
4287f247 | 3167 | r = put_user(kvm_s390_get_cpu_timer(vcpu), |
46a6dd1c J |
3168 | (u64 __user *)reg->addr); |
3169 | break; | |
3170 | case KVM_REG_S390_CLOCK_COMP: | |
3171 | r = put_user(vcpu->arch.sie_block->ckc, | |
3172 | (u64 __user *)reg->addr); | |
3173 | break; | |
536336c2 DD |
3174 | case KVM_REG_S390_PFTOKEN: |
3175 | r = put_user(vcpu->arch.pfault_token, | |
3176 | (u64 __user *)reg->addr); | |
3177 | break; | |
3178 | case KVM_REG_S390_PFCOMPARE: | |
3179 | r = put_user(vcpu->arch.pfault_compare, | |
3180 | (u64 __user *)reg->addr); | |
3181 | break; | |
3182 | case KVM_REG_S390_PFSELECT: | |
3183 | r = put_user(vcpu->arch.pfault_select, | |
3184 | (u64 __user *)reg->addr); | |
3185 | break; | |
672550fb CB |
3186 | case KVM_REG_S390_PP: |
3187 | r = put_user(vcpu->arch.sie_block->pp, | |
3188 | (u64 __user *)reg->addr); | |
3189 | break; | |
afa45ff5 CB |
3190 | case KVM_REG_S390_GBEA: |
3191 | r = put_user(vcpu->arch.sie_block->gbea, | |
3192 | (u64 __user *)reg->addr); | |
3193 | break; | |
14eebd91 CO |
3194 | default: |
3195 | break; | |
3196 | } | |
3197 | ||
3198 | return r; | |
3199 | } | |
3200 | ||
3201 | static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, | |
3202 | struct kvm_one_reg *reg) | |
3203 | { | |
3204 | int r = -EINVAL; | |
4287f247 | 3205 | __u64 val; |
14eebd91 CO |
3206 | |
3207 | switch (reg->id) { | |
29b7c71b CO |
3208 | case KVM_REG_S390_TODPR: |
3209 | r = get_user(vcpu->arch.sie_block->todpr, | |
3210 | (u32 __user *)reg->addr); | |
3211 | break; | |
3212 | case KVM_REG_S390_EPOCHDIFF: | |
3213 | r = get_user(vcpu->arch.sie_block->epoch, | |
3214 | (u64 __user *)reg->addr); | |
3215 | break; | |
46a6dd1c | 3216 | case KVM_REG_S390_CPU_TIMER: |
4287f247 DH |
3217 | r = get_user(val, (u64 __user *)reg->addr); |
3218 | if (!r) | |
3219 | kvm_s390_set_cpu_timer(vcpu, val); | |
46a6dd1c J |
3220 | break; |
3221 | case KVM_REG_S390_CLOCK_COMP: | |
3222 | r = get_user(vcpu->arch.sie_block->ckc, | |
3223 | (u64 __user *)reg->addr); | |
3224 | break; | |
536336c2 DD |
3225 | case KVM_REG_S390_PFTOKEN: |
3226 | r = get_user(vcpu->arch.pfault_token, | |
3227 | (u64 __user *)reg->addr); | |
9fbd8082 DH |
3228 | if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) |
3229 | kvm_clear_async_pf_completion_queue(vcpu); | |
536336c2 DD |
3230 | break; |
3231 | case KVM_REG_S390_PFCOMPARE: | |
3232 | r = get_user(vcpu->arch.pfault_compare, | |
3233 | (u64 __user *)reg->addr); | |
3234 | break; | |
3235 | case KVM_REG_S390_PFSELECT: | |
3236 | r = get_user(vcpu->arch.pfault_select, | |
3237 | (u64 __user *)reg->addr); | |
3238 | break; | |
672550fb CB |
3239 | case KVM_REG_S390_PP: |
3240 | r = get_user(vcpu->arch.sie_block->pp, | |
3241 | (u64 __user *)reg->addr); | |
3242 | break; | |
afa45ff5 CB |
3243 | case KVM_REG_S390_GBEA: |
3244 | r = get_user(vcpu->arch.sie_block->gbea, | |
3245 | (u64 __user *)reg->addr); | |
3246 | break; | |
14eebd91 CO |
3247 | default: |
3248 | break; | |
3249 | } | |
3250 | ||
3251 | return r; | |
3252 | } | |
b6d33834 | 3253 | |
7de3f142 | 3254 | static void kvm_arch_vcpu_ioctl_normal_reset(struct kvm_vcpu *vcpu) |
b0c632db | 3255 | { |
7de3f142 JF |
3256 | vcpu->arch.sie_block->gpsw.mask &= ~PSW_MASK_RI; |
3257 | vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; | |
3258 | memset(vcpu->run->s.regs.riccb, 0, sizeof(vcpu->run->s.regs.riccb)); | |
3259 | ||
3260 | kvm_clear_async_pf_completion_queue(vcpu); | |
3261 | if (!kvm_s390_user_cpu_state_ctrl(vcpu->kvm)) | |
3262 | kvm_s390_vcpu_stop(vcpu); | |
3263 | kvm_s390_clear_local_irqs(vcpu); | |
3264 | } | |
3265 | ||
3266 | static void kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu) | |
3267 | { | |
3268 | /* Initial reset is a superset of the normal reset */ | |
3269 | kvm_arch_vcpu_ioctl_normal_reset(vcpu); | |
3270 | ||
3271 | /* this equals initial cpu reset in pop, but we don't switch to ESA */ | |
3272 | vcpu->arch.sie_block->gpsw.mask = 0; | |
3273 | vcpu->arch.sie_block->gpsw.addr = 0; | |
3274 | kvm_s390_set_prefix(vcpu, 0); | |
3275 | kvm_s390_set_cpu_timer(vcpu, 0); | |
3276 | vcpu->arch.sie_block->ckc = 0; | |
3277 | vcpu->arch.sie_block->todpr = 0; | |
3278 | memset(vcpu->arch.sie_block->gcr, 0, sizeof(vcpu->arch.sie_block->gcr)); | |
3279 | vcpu->arch.sie_block->gcr[0] = CR0_INITIAL_MASK; | |
3280 | vcpu->arch.sie_block->gcr[14] = CR14_INITIAL_MASK; | |
3281 | vcpu->run->s.regs.fpc = 0; | |
3282 | vcpu->arch.sie_block->gbea = 1; | |
3283 | vcpu->arch.sie_block->pp = 0; | |
3284 | vcpu->arch.sie_block->fpf &= ~FPF_BPBC; | |
3285 | } | |
3286 | ||
3287 | static void kvm_arch_vcpu_ioctl_clear_reset(struct kvm_vcpu *vcpu) | |
3288 | { | |
3289 | struct kvm_sync_regs *regs = &vcpu->run->s.regs; | |
3290 | ||
3291 | /* Clear reset is a superset of the initial reset */ | |
3292 | kvm_arch_vcpu_ioctl_initial_reset(vcpu); | |
3293 | ||
3294 | memset(®s->gprs, 0, sizeof(regs->gprs)); | |
3295 | memset(®s->vrs, 0, sizeof(regs->vrs)); | |
3296 | memset(®s->acrs, 0, sizeof(regs->acrs)); | |
3297 | memset(®s->gscb, 0, sizeof(regs->gscb)); | |
3298 | ||
3299 | regs->etoken = 0; | |
3300 | regs->etoken_extension = 0; | |
b0c632db HC |
3301 | } |
3302 | ||
3303 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
3304 | { | |
875656fe | 3305 | vcpu_load(vcpu); |
5a32c1af | 3306 | memcpy(&vcpu->run->s.regs.gprs, ®s->gprs, sizeof(regs->gprs)); |
875656fe | 3307 | vcpu_put(vcpu); |
b0c632db HC |
3308 | return 0; |
3309 | } | |
3310 | ||
3311 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
3312 | { | |
1fc9b76b | 3313 | vcpu_load(vcpu); |
5a32c1af | 3314 | memcpy(®s->gprs, &vcpu->run->s.regs.gprs, sizeof(regs->gprs)); |
1fc9b76b | 3315 | vcpu_put(vcpu); |
b0c632db HC |
3316 | return 0; |
3317 | } | |
3318 | ||
3319 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
3320 | struct kvm_sregs *sregs) | |
3321 | { | |
b4ef9d4e CD |
3322 | vcpu_load(vcpu); |
3323 | ||
59674c1a | 3324 | memcpy(&vcpu->run->s.regs.acrs, &sregs->acrs, sizeof(sregs->acrs)); |
b0c632db | 3325 | memcpy(&vcpu->arch.sie_block->gcr, &sregs->crs, sizeof(sregs->crs)); |
b4ef9d4e CD |
3326 | |
3327 | vcpu_put(vcpu); | |
b0c632db HC |
3328 | return 0; |
3329 | } | |
3330 | ||
3331 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
3332 | struct kvm_sregs *sregs) | |
3333 | { | |
bcdec41c CD |
3334 | vcpu_load(vcpu); |
3335 | ||
59674c1a | 3336 | memcpy(&sregs->acrs, &vcpu->run->s.regs.acrs, sizeof(sregs->acrs)); |
b0c632db | 3337 | memcpy(&sregs->crs, &vcpu->arch.sie_block->gcr, sizeof(sregs->crs)); |
bcdec41c CD |
3338 | |
3339 | vcpu_put(vcpu); | |
b0c632db HC |
3340 | return 0; |
3341 | } | |
3342 | ||
3343 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) | |
3344 | { | |
6a96bc7f CD |
3345 | int ret = 0; |
3346 | ||
3347 | vcpu_load(vcpu); | |
3348 | ||
3349 | if (test_fp_ctl(fpu->fpc)) { | |
3350 | ret = -EINVAL; | |
3351 | goto out; | |
3352 | } | |
e1788bb9 | 3353 | vcpu->run->s.regs.fpc = fpu->fpc; |
9abc2a08 | 3354 | if (MACHINE_HAS_VX) |
a7d4b8f2 DH |
3355 | convert_fp_to_vx((__vector128 *) vcpu->run->s.regs.vrs, |
3356 | (freg_t *) fpu->fprs); | |
9abc2a08 | 3357 | else |
a7d4b8f2 | 3358 | memcpy(vcpu->run->s.regs.fprs, &fpu->fprs, sizeof(fpu->fprs)); |
6a96bc7f CD |
3359 | |
3360 | out: | |
3361 | vcpu_put(vcpu); | |
3362 | return ret; | |
b0c632db HC |
3363 | } |
3364 | ||
3365 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) | |
3366 | { | |
1393123e CD |
3367 | vcpu_load(vcpu); |
3368 | ||
9abc2a08 DH |
3369 | /* make sure we have the latest values */ |
3370 | save_fpu_regs(); | |
3371 | if (MACHINE_HAS_VX) | |
a7d4b8f2 DH |
3372 | convert_vx_to_fp((freg_t *) fpu->fprs, |
3373 | (__vector128 *) vcpu->run->s.regs.vrs); | |
9abc2a08 | 3374 | else |
a7d4b8f2 | 3375 | memcpy(fpu->fprs, vcpu->run->s.regs.fprs, sizeof(fpu->fprs)); |
e1788bb9 | 3376 | fpu->fpc = vcpu->run->s.regs.fpc; |
1393123e CD |
3377 | |
3378 | vcpu_put(vcpu); | |
b0c632db HC |
3379 | return 0; |
3380 | } | |
3381 | ||
3382 | static int kvm_arch_vcpu_ioctl_set_initial_psw(struct kvm_vcpu *vcpu, psw_t psw) | |
3383 | { | |
3384 | int rc = 0; | |
3385 | ||
7a42fdc2 | 3386 | if (!is_vcpu_stopped(vcpu)) |
b0c632db | 3387 | rc = -EBUSY; |
d7b0b5eb CO |
3388 | else { |
3389 | vcpu->run->psw_mask = psw.mask; | |
3390 | vcpu->run->psw_addr = psw.addr; | |
3391 | } | |
b0c632db HC |
3392 | return rc; |
3393 | } | |
3394 | ||
3395 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, | |
3396 | struct kvm_translation *tr) | |
3397 | { | |
3398 | return -EINVAL; /* not implemented yet */ | |
3399 | } | |
3400 | ||
27291e21 DH |
3401 | #define VALID_GUESTDBG_FLAGS (KVM_GUESTDBG_SINGLESTEP | \ |
3402 | KVM_GUESTDBG_USE_HW_BP | \ | |
3403 | KVM_GUESTDBG_ENABLE) | |
3404 | ||
d0bfb940 JK |
3405 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
3406 | struct kvm_guest_debug *dbg) | |
b0c632db | 3407 | { |
27291e21 DH |
3408 | int rc = 0; |
3409 | ||
66b56562 CD |
3410 | vcpu_load(vcpu); |
3411 | ||
27291e21 DH |
3412 | vcpu->guest_debug = 0; |
3413 | kvm_s390_clear_bp_data(vcpu); | |
3414 | ||
66b56562 CD |
3415 | if (dbg->control & ~VALID_GUESTDBG_FLAGS) { |
3416 | rc = -EINVAL; | |
3417 | goto out; | |
3418 | } | |
3419 | if (!sclp.has_gpere) { | |
3420 | rc = -EINVAL; | |
3421 | goto out; | |
3422 | } | |
27291e21 DH |
3423 | |
3424 | if (dbg->control & KVM_GUESTDBG_ENABLE) { | |
3425 | vcpu->guest_debug = dbg->control; | |
3426 | /* enforce guest PER */ | |
ef8f4f49 | 3427 | kvm_s390_set_cpuflags(vcpu, CPUSTAT_P); |
27291e21 DH |
3428 | |
3429 | if (dbg->control & KVM_GUESTDBG_USE_HW_BP) | |
3430 | rc = kvm_s390_import_bp_data(vcpu, dbg); | |
3431 | } else { | |
9daecfc6 | 3432 | kvm_s390_clear_cpuflags(vcpu, CPUSTAT_P); |
27291e21 DH |
3433 | vcpu->arch.guestdbg.last_bp = 0; |
3434 | } | |
3435 | ||
3436 | if (rc) { | |
3437 | vcpu->guest_debug = 0; | |
3438 | kvm_s390_clear_bp_data(vcpu); | |
9daecfc6 | 3439 | kvm_s390_clear_cpuflags(vcpu, CPUSTAT_P); |
27291e21 DH |
3440 | } |
3441 | ||
66b56562 CD |
3442 | out: |
3443 | vcpu_put(vcpu); | |
27291e21 | 3444 | return rc; |
b0c632db HC |
3445 | } |
3446 | ||
62d9f0db MT |
3447 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
3448 | struct kvm_mp_state *mp_state) | |
3449 | { | |
fd232561 CD |
3450 | int ret; |
3451 | ||
3452 | vcpu_load(vcpu); | |
3453 | ||
6352e4d2 | 3454 | /* CHECK_STOP and LOAD are not supported yet */ |
fd232561 CD |
3455 | ret = is_vcpu_stopped(vcpu) ? KVM_MP_STATE_STOPPED : |
3456 | KVM_MP_STATE_OPERATING; | |
3457 | ||
3458 | vcpu_put(vcpu); | |
3459 | return ret; | |
62d9f0db MT |
3460 | } |
3461 | ||
3462 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
3463 | struct kvm_mp_state *mp_state) | |
3464 | { | |
6352e4d2 DH |
3465 | int rc = 0; |
3466 | ||
e83dff5e CD |
3467 | vcpu_load(vcpu); |
3468 | ||
6352e4d2 DH |
3469 | /* user space knows about this interface - let it control the state */ |
3470 | vcpu->kvm->arch.user_cpu_state_ctrl = 1; | |
3471 | ||
3472 | switch (mp_state->mp_state) { | |
3473 | case KVM_MP_STATE_STOPPED: | |
3474 | kvm_s390_vcpu_stop(vcpu); | |
3475 | break; | |
3476 | case KVM_MP_STATE_OPERATING: | |
3477 | kvm_s390_vcpu_start(vcpu); | |
3478 | break; | |
3479 | case KVM_MP_STATE_LOAD: | |
3480 | case KVM_MP_STATE_CHECK_STOP: | |
3481 | /* fall through - CHECK_STOP and LOAD are not supported yet */ | |
3482 | default: | |
3483 | rc = -ENXIO; | |
3484 | } | |
3485 | ||
e83dff5e | 3486 | vcpu_put(vcpu); |
6352e4d2 | 3487 | return rc; |
62d9f0db MT |
3488 | } |
3489 | ||
8ad35755 DH |
3490 | static bool ibs_enabled(struct kvm_vcpu *vcpu) |
3491 | { | |
8d5fb0dc | 3492 | return kvm_s390_test_cpuflags(vcpu, CPUSTAT_IBS); |
8ad35755 DH |
3493 | } |
3494 | ||
2c70fe44 CB |
3495 | static int kvm_s390_handle_requests(struct kvm_vcpu *vcpu) |
3496 | { | |
8ad35755 | 3497 | retry: |
8e236546 | 3498 | kvm_s390_vcpu_request_handled(vcpu); |
2fa6e1e1 | 3499 | if (!kvm_request_pending(vcpu)) |
586b7ccd | 3500 | return 0; |
2c70fe44 CB |
3501 | /* |
3502 | * We use MMU_RELOAD just to re-arm the ipte notifier for the | |
b2d73b2a | 3503 | * guest prefix page. gmap_mprotect_notify will wait on the ptl lock. |
2c70fe44 CB |
3504 | * This ensures that the ipte instruction for this request has |
3505 | * already finished. We might race against a second unmapper that | |
3506 | * wants to set the blocking bit. Lets just retry the request loop. | |
3507 | */ | |
8ad35755 | 3508 | if (kvm_check_request(KVM_REQ_MMU_RELOAD, vcpu)) { |
2c70fe44 | 3509 | int rc; |
b2d73b2a MS |
3510 | rc = gmap_mprotect_notify(vcpu->arch.gmap, |
3511 | kvm_s390_get_prefix(vcpu), | |
3512 | PAGE_SIZE * 2, PROT_WRITE); | |
aca411a4 JN |
3513 | if (rc) { |
3514 | kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); | |
2c70fe44 | 3515 | return rc; |
aca411a4 | 3516 | } |
8ad35755 | 3517 | goto retry; |
2c70fe44 | 3518 | } |
8ad35755 | 3519 | |
d3d692c8 DH |
3520 | if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu)) { |
3521 | vcpu->arch.sie_block->ihcpu = 0xffff; | |
3522 | goto retry; | |
3523 | } | |
3524 | ||
8ad35755 DH |
3525 | if (kvm_check_request(KVM_REQ_ENABLE_IBS, vcpu)) { |
3526 | if (!ibs_enabled(vcpu)) { | |
3527 | trace_kvm_s390_enable_disable_ibs(vcpu->vcpu_id, 1); | |
ef8f4f49 | 3528 | kvm_s390_set_cpuflags(vcpu, CPUSTAT_IBS); |
8ad35755 DH |
3529 | } |
3530 | goto retry; | |
2c70fe44 | 3531 | } |
8ad35755 DH |
3532 | |
3533 | if (kvm_check_request(KVM_REQ_DISABLE_IBS, vcpu)) { | |
3534 | if (ibs_enabled(vcpu)) { | |
3535 | trace_kvm_s390_enable_disable_ibs(vcpu->vcpu_id, 0); | |
9daecfc6 | 3536 | kvm_s390_clear_cpuflags(vcpu, CPUSTAT_IBS); |
8ad35755 DH |
3537 | } |
3538 | goto retry; | |
3539 | } | |
3540 | ||
6502a34c DH |
3541 | if (kvm_check_request(KVM_REQ_ICPT_OPEREXC, vcpu)) { |
3542 | vcpu->arch.sie_block->ictl |= ICTL_OPEREXC; | |
3543 | goto retry; | |
3544 | } | |
3545 | ||
190df4a2 CI |
3546 | if (kvm_check_request(KVM_REQ_START_MIGRATION, vcpu)) { |
3547 | /* | |
c9f0a2b8 | 3548 | * Disable CMM virtualization; we will emulate the ESSA |
190df4a2 CI |
3549 | * instruction manually, in order to provide additional |
3550 | * functionalities needed for live migration. | |
3551 | */ | |
3552 | vcpu->arch.sie_block->ecb2 &= ~ECB2_CMMA; | |
3553 | goto retry; | |
3554 | } | |
3555 | ||
3556 | if (kvm_check_request(KVM_REQ_STOP_MIGRATION, vcpu)) { | |
3557 | /* | |
c9f0a2b8 JF |
3558 | * Re-enable CMM virtualization if CMMA is available and |
3559 | * CMM has been used. | |
190df4a2 CI |
3560 | */ |
3561 | if ((vcpu->kvm->arch.use_cmma) && | |
c9f0a2b8 | 3562 | (vcpu->kvm->mm->context.uses_cmm)) |
190df4a2 CI |
3563 | vcpu->arch.sie_block->ecb2 |= ECB2_CMMA; |
3564 | goto retry; | |
3565 | } | |
3566 | ||
0759d068 | 3567 | /* nothing to do, just clear the request */ |
72875d8a | 3568 | kvm_clear_request(KVM_REQ_UNHALT, vcpu); |
3194cdb7 DH |
3569 | /* we left the vsie handler, nothing to do, just clear the request */ |
3570 | kvm_clear_request(KVM_REQ_VSIE_RESTART, vcpu); | |
0759d068 | 3571 | |
2c70fe44 CB |
3572 | return 0; |
3573 | } | |
3574 | ||
0e7def5f DH |
3575 | void kvm_s390_set_tod_clock(struct kvm *kvm, |
3576 | const struct kvm_s390_vm_tod_clock *gtod) | |
8fa1696e CW |
3577 | { |
3578 | struct kvm_vcpu *vcpu; | |
3579 | struct kvm_s390_tod_clock_ext htod; | |
3580 | int i; | |
3581 | ||
3582 | mutex_lock(&kvm->lock); | |
3583 | preempt_disable(); | |
3584 | ||
3585 | get_tod_clock_ext((char *)&htod); | |
3586 | ||
3587 | kvm->arch.epoch = gtod->tod - htod.tod; | |
0e7def5f DH |
3588 | kvm->arch.epdx = 0; |
3589 | if (test_kvm_facility(kvm, 139)) { | |
3590 | kvm->arch.epdx = gtod->epoch_idx - htod.epoch_idx; | |
3591 | if (kvm->arch.epoch > gtod->tod) | |
3592 | kvm->arch.epdx -= 1; | |
3593 | } | |
8fa1696e CW |
3594 | |
3595 | kvm_s390_vcpu_block_all(kvm); | |
3596 | kvm_for_each_vcpu(i, vcpu, kvm) { | |
3597 | vcpu->arch.sie_block->epoch = kvm->arch.epoch; | |
3598 | vcpu->arch.sie_block->epdx = kvm->arch.epdx; | |
3599 | } | |
3600 | ||
3601 | kvm_s390_vcpu_unblock_all(kvm); | |
3602 | preempt_enable(); | |
3603 | mutex_unlock(&kvm->lock); | |
3604 | } | |
3605 | ||
fa576c58 TH |
3606 | /** |
3607 | * kvm_arch_fault_in_page - fault-in guest page if necessary | |
3608 | * @vcpu: The corresponding virtual cpu | |
3609 | * @gpa: Guest physical address | |
3610 | * @writable: Whether the page should be writable or not | |
3611 | * | |
3612 | * Make sure that a guest page has been faulted-in on the host. | |
3613 | * | |
3614 | * Return: Zero on success, negative error code otherwise. | |
3615 | */ | |
3616 | long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable) | |
24eb3a82 | 3617 | { |
527e30b4 MS |
3618 | return gmap_fault(vcpu->arch.gmap, gpa, |
3619 | writable ? FAULT_FLAG_WRITE : 0); | |
24eb3a82 DD |
3620 | } |
3621 | ||
3c038e6b DD |
3622 | static void __kvm_inject_pfault_token(struct kvm_vcpu *vcpu, bool start_token, |
3623 | unsigned long token) | |
3624 | { | |
3625 | struct kvm_s390_interrupt inti; | |
383d0b05 | 3626 | struct kvm_s390_irq irq; |
3c038e6b DD |
3627 | |
3628 | if (start_token) { | |
383d0b05 JF |
3629 | irq.u.ext.ext_params2 = token; |
3630 | irq.type = KVM_S390_INT_PFAULT_INIT; | |
3631 | WARN_ON_ONCE(kvm_s390_inject_vcpu(vcpu, &irq)); | |
3c038e6b DD |
3632 | } else { |
3633 | inti.type = KVM_S390_INT_PFAULT_DONE; | |
383d0b05 | 3634 | inti.parm64 = token; |
3c038e6b DD |
3635 | WARN_ON_ONCE(kvm_s390_inject_vm(vcpu->kvm, &inti)); |
3636 | } | |
3637 | } | |
3638 | ||
3639 | void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, | |
3640 | struct kvm_async_pf *work) | |
3641 | { | |
3642 | trace_kvm_s390_pfault_init(vcpu, work->arch.pfault_token); | |
3643 | __kvm_inject_pfault_token(vcpu, true, work->arch.pfault_token); | |
3644 | } | |
3645 | ||
3646 | void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, | |
3647 | struct kvm_async_pf *work) | |
3648 | { | |
3649 | trace_kvm_s390_pfault_done(vcpu, work->arch.pfault_token); | |
3650 | __kvm_inject_pfault_token(vcpu, false, work->arch.pfault_token); | |
3651 | } | |
3652 | ||
3653 | void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, | |
3654 | struct kvm_async_pf *work) | |
3655 | { | |
3656 | /* s390 will always inject the page directly */ | |
3657 | } | |
3658 | ||
3659 | bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu) | |
3660 | { | |
3661 | /* | |
3662 | * s390 will always inject the page directly, | |
3663 | * but we still want check_async_completion to cleanup | |
3664 | */ | |
3665 | return true; | |
3666 | } | |
3667 | ||
3668 | static int kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu) | |
3669 | { | |
3670 | hva_t hva; | |
3671 | struct kvm_arch_async_pf arch; | |
3672 | int rc; | |
3673 | ||
3674 | if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) | |
3675 | return 0; | |
3676 | if ((vcpu->arch.sie_block->gpsw.mask & vcpu->arch.pfault_select) != | |
3677 | vcpu->arch.pfault_compare) | |
3678 | return 0; | |
3679 | if (psw_extint_disabled(vcpu)) | |
3680 | return 0; | |
9a022067 | 3681 | if (kvm_s390_vcpu_has_irq(vcpu, 0)) |
3c038e6b | 3682 | return 0; |
b9224cd7 | 3683 | if (!(vcpu->arch.sie_block->gcr[0] & CR0_SERVICE_SIGNAL_SUBMASK)) |
3c038e6b DD |
3684 | return 0; |
3685 | if (!vcpu->arch.gmap->pfault_enabled) | |
3686 | return 0; | |
3687 | ||
81480cc1 HC |
3688 | hva = gfn_to_hva(vcpu->kvm, gpa_to_gfn(current->thread.gmap_addr)); |
3689 | hva += current->thread.gmap_addr & ~PAGE_MASK; | |
3690 | if (read_guest_real(vcpu, vcpu->arch.pfault_token, &arch.pfault_token, 8)) | |
3c038e6b DD |
3691 | return 0; |
3692 | ||
3693 | rc = kvm_setup_async_pf(vcpu, current->thread.gmap_addr, hva, &arch); | |
3694 | return rc; | |
3695 | } | |
3696 | ||
3fb4c40f | 3697 | static int vcpu_pre_run(struct kvm_vcpu *vcpu) |
b0c632db | 3698 | { |
3fb4c40f | 3699 | int rc, cpuflags; |
e168bf8d | 3700 | |
3c038e6b DD |
3701 | /* |
3702 | * On s390 notifications for arriving pages will be delivered directly | |
3703 | * to the guest but the house keeping for completed pfaults is | |
3704 | * handled outside the worker. | |
3705 | */ | |
3706 | kvm_check_async_pf_completion(vcpu); | |
3707 | ||
7ec7c8c7 CB |
3708 | vcpu->arch.sie_block->gg14 = vcpu->run->s.regs.gprs[14]; |
3709 | vcpu->arch.sie_block->gg15 = vcpu->run->s.regs.gprs[15]; | |
b0c632db HC |
3710 | |
3711 | if (need_resched()) | |
3712 | schedule(); | |
3713 | ||
d3a73acb | 3714 | if (test_cpu_flag(CIF_MCCK_PENDING)) |
71cde587 CB |
3715 | s390_handle_mcck(); |
3716 | ||
79395031 JF |
3717 | if (!kvm_is_ucontrol(vcpu->kvm)) { |
3718 | rc = kvm_s390_deliver_pending_interrupts(vcpu); | |
3719 | if (rc) | |
3720 | return rc; | |
3721 | } | |
0ff31867 | 3722 | |
2c70fe44 CB |
3723 | rc = kvm_s390_handle_requests(vcpu); |
3724 | if (rc) | |
3725 | return rc; | |
3726 | ||
27291e21 DH |
3727 | if (guestdbg_enabled(vcpu)) { |
3728 | kvm_s390_backup_guest_per_regs(vcpu); | |
3729 | kvm_s390_patch_guest_per_regs(vcpu); | |
3730 | } | |
3731 | ||
9f30f621 MM |
3732 | clear_bit(vcpu->vcpu_id, vcpu->kvm->arch.gisa_int.kicked_mask); |
3733 | ||
b0c632db | 3734 | vcpu->arch.sie_block->icptcode = 0; |
3fb4c40f TH |
3735 | cpuflags = atomic_read(&vcpu->arch.sie_block->cpuflags); |
3736 | VCPU_EVENT(vcpu, 6, "entering sie flags %x", cpuflags); | |
3737 | trace_kvm_s390_sie_enter(vcpu, cpuflags); | |
2b29a9fd | 3738 | |
3fb4c40f TH |
3739 | return 0; |
3740 | } | |
3741 | ||
492d8642 TH |
3742 | static int vcpu_post_run_fault_in_sie(struct kvm_vcpu *vcpu) |
3743 | { | |
56317920 DH |
3744 | struct kvm_s390_pgm_info pgm_info = { |
3745 | .code = PGM_ADDRESSING, | |
3746 | }; | |
3747 | u8 opcode, ilen; | |
492d8642 TH |
3748 | int rc; |
3749 | ||
3750 | VCPU_EVENT(vcpu, 3, "%s", "fault in sie instruction"); | |
3751 | trace_kvm_s390_sie_fault(vcpu); | |
3752 | ||
3753 | /* | |
3754 | * We want to inject an addressing exception, which is defined as a | |
3755 | * suppressing or terminating exception. However, since we came here | |
3756 | * by a DAT access exception, the PSW still points to the faulting | |
3757 | * instruction since DAT exceptions are nullifying. So we've got | |
3758 | * to look up the current opcode to get the length of the instruction | |
3759 | * to be able to forward the PSW. | |
3760 | */ | |
3fa8cad7 | 3761 | rc = read_guest_instr(vcpu, vcpu->arch.sie_block->gpsw.addr, &opcode, 1); |
56317920 | 3762 | ilen = insn_length(opcode); |
9b0d721a DH |
3763 | if (rc < 0) { |
3764 | return rc; | |
3765 | } else if (rc) { | |
3766 | /* Instruction-Fetching Exceptions - we can't detect the ilen. | |
3767 | * Forward by arbitrary ilc, injection will take care of | |
3768 | * nullification if necessary. | |
3769 | */ | |
3770 | pgm_info = vcpu->arch.pgm; | |
3771 | ilen = 4; | |
3772 | } | |
56317920 DH |
3773 | pgm_info.flags = ilen | KVM_S390_PGM_FLAGS_ILC_VALID; |
3774 | kvm_s390_forward_psw(vcpu, ilen); | |
3775 | return kvm_s390_inject_prog_irq(vcpu, &pgm_info); | |
492d8642 TH |
3776 | } |
3777 | ||
3fb4c40f TH |
3778 | static int vcpu_post_run(struct kvm_vcpu *vcpu, int exit_reason) |
3779 | { | |
4d62fcc0 QH |
3780 | struct mcck_volatile_info *mcck_info; |
3781 | struct sie_page *sie_page; | |
3782 | ||
2b29a9fd DD |
3783 | VCPU_EVENT(vcpu, 6, "exit sie icptcode %d", |
3784 | vcpu->arch.sie_block->icptcode); | |
3785 | trace_kvm_s390_sie_exit(vcpu, vcpu->arch.sie_block->icptcode); | |
3786 | ||
27291e21 DH |
3787 | if (guestdbg_enabled(vcpu)) |
3788 | kvm_s390_restore_guest_per_regs(vcpu); | |
3789 | ||
7ec7c8c7 CB |
3790 | vcpu->run->s.regs.gprs[14] = vcpu->arch.sie_block->gg14; |
3791 | vcpu->run->s.regs.gprs[15] = vcpu->arch.sie_block->gg15; | |
71f116bf | 3792 | |
4d62fcc0 QH |
3793 | if (exit_reason == -EINTR) { |
3794 | VCPU_EVENT(vcpu, 3, "%s", "machine check"); | |
3795 | sie_page = container_of(vcpu->arch.sie_block, | |
3796 | struct sie_page, sie_block); | |
3797 | mcck_info = &sie_page->mcck_info; | |
3798 | kvm_s390_reinject_machine_check(vcpu, mcck_info); | |
3799 | return 0; | |
3800 | } | |
3801 | ||
71f116bf DH |
3802 | if (vcpu->arch.sie_block->icptcode > 0) { |
3803 | int rc = kvm_handle_sie_intercept(vcpu); | |
3804 | ||
3805 | if (rc != -EOPNOTSUPP) | |
3806 | return rc; | |
3807 | vcpu->run->exit_reason = KVM_EXIT_S390_SIEIC; | |
3808 | vcpu->run->s390_sieic.icptcode = vcpu->arch.sie_block->icptcode; | |
3809 | vcpu->run->s390_sieic.ipa = vcpu->arch.sie_block->ipa; | |
3810 | vcpu->run->s390_sieic.ipb = vcpu->arch.sie_block->ipb; | |
3811 | return -EREMOTE; | |
3812 | } else if (exit_reason != -EFAULT) { | |
3813 | vcpu->stat.exit_null++; | |
3814 | return 0; | |
210b1607 TH |
3815 | } else if (kvm_is_ucontrol(vcpu->kvm)) { |
3816 | vcpu->run->exit_reason = KVM_EXIT_S390_UCONTROL; | |
3817 | vcpu->run->s390_ucontrol.trans_exc_code = | |
3818 | current->thread.gmap_addr; | |
3819 | vcpu->run->s390_ucontrol.pgm_code = 0x10; | |
71f116bf | 3820 | return -EREMOTE; |
24eb3a82 | 3821 | } else if (current->thread.gmap_pfault) { |
3c038e6b | 3822 | trace_kvm_s390_major_guest_pfault(vcpu); |
24eb3a82 | 3823 | current->thread.gmap_pfault = 0; |
71f116bf DH |
3824 | if (kvm_arch_setup_async_pf(vcpu)) |
3825 | return 0; | |
3826 | return kvm_arch_fault_in_page(vcpu, current->thread.gmap_addr, 1); | |
a76ccff6 | 3827 | } |
71f116bf | 3828 | return vcpu_post_run_fault_in_sie(vcpu); |
3fb4c40f TH |
3829 | } |
3830 | ||
3831 | static int __vcpu_run(struct kvm_vcpu *vcpu) | |
3832 | { | |
3833 | int rc, exit_reason; | |
3834 | ||
800c1065 TH |
3835 | /* |
3836 | * We try to hold kvm->srcu during most of vcpu_run (except when run- | |
3837 | * ning the guest), so that memslots (and other stuff) are protected | |
3838 | */ | |
3839 | vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); | |
3840 | ||
a76ccff6 TH |
3841 | do { |
3842 | rc = vcpu_pre_run(vcpu); | |
3843 | if (rc) | |
3844 | break; | |
3fb4c40f | 3845 | |
800c1065 | 3846 | srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx); |
a76ccff6 TH |
3847 | /* |
3848 | * As PF_VCPU will be used in fault handler, between | |
3849 | * guest_enter and guest_exit should be no uaccess. | |
3850 | */ | |
0097d12e | 3851 | local_irq_disable(); |
6edaa530 | 3852 | guest_enter_irqoff(); |
db0758b2 | 3853 | __disable_cpu_timer_accounting(vcpu); |
0097d12e | 3854 | local_irq_enable(); |
a76ccff6 TH |
3855 | exit_reason = sie64a(vcpu->arch.sie_block, |
3856 | vcpu->run->s.regs.gprs); | |
0097d12e | 3857 | local_irq_disable(); |
db0758b2 | 3858 | __enable_cpu_timer_accounting(vcpu); |
6edaa530 | 3859 | guest_exit_irqoff(); |
0097d12e | 3860 | local_irq_enable(); |
800c1065 | 3861 | vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); |
a76ccff6 TH |
3862 | |
3863 | rc = vcpu_post_run(vcpu, exit_reason); | |
27291e21 | 3864 | } while (!signal_pending(current) && !guestdbg_exit_pending(vcpu) && !rc); |
3fb4c40f | 3865 | |
800c1065 | 3866 | srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx); |
e168bf8d | 3867 | return rc; |
b0c632db HC |
3868 | } |
3869 | ||
b028ee3e DH |
3870 | static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) |
3871 | { | |
4d5f2c04 | 3872 | struct runtime_instr_cb *riccb; |
4e0b1ab7 | 3873 | struct gs_cb *gscb; |
4d5f2c04 CB |
3874 | |
3875 | riccb = (struct runtime_instr_cb *) &kvm_run->s.regs.riccb; | |
4e0b1ab7 | 3876 | gscb = (struct gs_cb *) &kvm_run->s.regs.gscb; |
b028ee3e DH |
3877 | vcpu->arch.sie_block->gpsw.mask = kvm_run->psw_mask; |
3878 | vcpu->arch.sie_block->gpsw.addr = kvm_run->psw_addr; | |
3879 | if (kvm_run->kvm_dirty_regs & KVM_SYNC_PREFIX) | |
3880 | kvm_s390_set_prefix(vcpu, kvm_run->s.regs.prefix); | |
3881 | if (kvm_run->kvm_dirty_regs & KVM_SYNC_CRS) { | |
3882 | memcpy(&vcpu->arch.sie_block->gcr, &kvm_run->s.regs.crs, 128); | |
d3d692c8 DH |
3883 | /* some control register changes require a tlb flush */ |
3884 | kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); | |
b028ee3e DH |
3885 | } |
3886 | if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { | |
4287f247 | 3887 | kvm_s390_set_cpu_timer(vcpu, kvm_run->s.regs.cputm); |
b028ee3e DH |
3888 | vcpu->arch.sie_block->ckc = kvm_run->s.regs.ckc; |
3889 | vcpu->arch.sie_block->todpr = kvm_run->s.regs.todpr; | |
3890 | vcpu->arch.sie_block->pp = kvm_run->s.regs.pp; | |
3891 | vcpu->arch.sie_block->gbea = kvm_run->s.regs.gbea; | |
3892 | } | |
3893 | if (kvm_run->kvm_dirty_regs & KVM_SYNC_PFAULT) { | |
3894 | vcpu->arch.pfault_token = kvm_run->s.regs.pft; | |
3895 | vcpu->arch.pfault_select = kvm_run->s.regs.pfs; | |
3896 | vcpu->arch.pfault_compare = kvm_run->s.regs.pfc; | |
9fbd8082 DH |
3897 | if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) |
3898 | kvm_clear_async_pf_completion_queue(vcpu); | |
b028ee3e | 3899 | } |
80cd8763 FZ |
3900 | /* |
3901 | * If userspace sets the riccb (e.g. after migration) to a valid state, | |
3902 | * we should enable RI here instead of doing the lazy enablement. | |
3903 | */ | |
3904 | if ((kvm_run->kvm_dirty_regs & KVM_SYNC_RICCB) && | |
4d5f2c04 | 3905 | test_kvm_facility(vcpu->kvm, 64) && |
bb59c2da | 3906 | riccb->v && |
0c9d8683 | 3907 | !(vcpu->arch.sie_block->ecb3 & ECB3_RI)) { |
4d5f2c04 | 3908 | VCPU_EVENT(vcpu, 3, "%s", "ENABLE: RI (sync_regs)"); |
0c9d8683 | 3909 | vcpu->arch.sie_block->ecb3 |= ECB3_RI; |
80cd8763 | 3910 | } |
4e0b1ab7 FZ |
3911 | /* |
3912 | * If userspace sets the gscb (e.g. after migration) to non-zero, | |
3913 | * we should enable GS here instead of doing the lazy enablement. | |
3914 | */ | |
3915 | if ((kvm_run->kvm_dirty_regs & KVM_SYNC_GSCB) && | |
3916 | test_kvm_facility(vcpu->kvm, 133) && | |
3917 | gscb->gssm && | |
3918 | !vcpu->arch.gs_enabled) { | |
3919 | VCPU_EVENT(vcpu, 3, "%s", "ENABLE: GS (sync_regs)"); | |
3920 | vcpu->arch.sie_block->ecb |= ECB_GS; | |
3921 | vcpu->arch.sie_block->ecd |= ECD_HOSTREGMGMT; | |
3922 | vcpu->arch.gs_enabled = 1; | |
80cd8763 | 3923 | } |
35b3fde6 CB |
3924 | if ((kvm_run->kvm_dirty_regs & KVM_SYNC_BPBC) && |
3925 | test_kvm_facility(vcpu->kvm, 82)) { | |
3926 | vcpu->arch.sie_block->fpf &= ~FPF_BPBC; | |
3927 | vcpu->arch.sie_block->fpf |= kvm_run->s.regs.bpbc ? FPF_BPBC : 0; | |
3928 | } | |
31d8b8d4 CB |
3929 | save_access_regs(vcpu->arch.host_acrs); |
3930 | restore_access_regs(vcpu->run->s.regs.acrs); | |
e1788bb9 CB |
3931 | /* save host (userspace) fprs/vrs */ |
3932 | save_fpu_regs(); | |
3933 | vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc; | |
3934 | vcpu->arch.host_fpregs.regs = current->thread.fpu.regs; | |
3935 | if (MACHINE_HAS_VX) | |
3936 | current->thread.fpu.regs = vcpu->run->s.regs.vrs; | |
3937 | else | |
3938 | current->thread.fpu.regs = vcpu->run->s.regs.fprs; | |
3939 | current->thread.fpu.fpc = vcpu->run->s.regs.fpc; | |
3940 | if (test_fp_ctl(current->thread.fpu.fpc)) | |
3941 | /* User space provided an invalid FPC, let's clear it */ | |
3942 | current->thread.fpu.fpc = 0; | |
4e0b1ab7 FZ |
3943 | if (MACHINE_HAS_GS) { |
3944 | preempt_disable(); | |
3945 | __ctl_set_bit(2, 4); | |
3946 | if (current->thread.gs_cb) { | |
3947 | vcpu->arch.host_gscb = current->thread.gs_cb; | |
3948 | save_gs_cb(vcpu->arch.host_gscb); | |
3949 | } | |
3950 | if (vcpu->arch.gs_enabled) { | |
3951 | current->thread.gs_cb = (struct gs_cb *) | |
3952 | &vcpu->run->s.regs.gscb; | |
3953 | restore_gs_cb(current->thread.gs_cb); | |
3954 | } | |
3955 | preempt_enable(); | |
3956 | } | |
a3da7b4a | 3957 | /* SIE will load etoken directly from SDNX and therefore kvm_run */ |
80cd8763 | 3958 | |
b028ee3e DH |
3959 | kvm_run->kvm_dirty_regs = 0; |
3960 | } | |
3961 | ||
3962 | static void store_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
3963 | { | |
3964 | kvm_run->psw_mask = vcpu->arch.sie_block->gpsw.mask; | |
3965 | kvm_run->psw_addr = vcpu->arch.sie_block->gpsw.addr; | |
3966 | kvm_run->s.regs.prefix = kvm_s390_get_prefix(vcpu); | |
3967 | memcpy(&kvm_run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); | |
4287f247 | 3968 | kvm_run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); |
b028ee3e DH |
3969 | kvm_run->s.regs.ckc = vcpu->arch.sie_block->ckc; |
3970 | kvm_run->s.regs.todpr = vcpu->arch.sie_block->todpr; | |
3971 | kvm_run->s.regs.pp = vcpu->arch.sie_block->pp; | |
3972 | kvm_run->s.regs.gbea = vcpu->arch.sie_block->gbea; | |
3973 | kvm_run->s.regs.pft = vcpu->arch.pfault_token; | |
3974 | kvm_run->s.regs.pfs = vcpu->arch.pfault_select; | |
3975 | kvm_run->s.regs.pfc = vcpu->arch.pfault_compare; | |
35b3fde6 | 3976 | kvm_run->s.regs.bpbc = (vcpu->arch.sie_block->fpf & FPF_BPBC) == FPF_BPBC; |
31d8b8d4 CB |
3977 | save_access_regs(vcpu->run->s.regs.acrs); |
3978 | restore_access_regs(vcpu->arch.host_acrs); | |
e1788bb9 CB |
3979 | /* Save guest register state */ |
3980 | save_fpu_regs(); | |
3981 | vcpu->run->s.regs.fpc = current->thread.fpu.fpc; | |
3982 | /* Restore will be done lazily at return */ | |
3983 | current->thread.fpu.fpc = vcpu->arch.host_fpregs.fpc; | |
3984 | current->thread.fpu.regs = vcpu->arch.host_fpregs.regs; | |
4e0b1ab7 FZ |
3985 | if (MACHINE_HAS_GS) { |
3986 | __ctl_set_bit(2, 4); | |
3987 | if (vcpu->arch.gs_enabled) | |
3988 | save_gs_cb(current->thread.gs_cb); | |
3989 | preempt_disable(); | |
3990 | current->thread.gs_cb = vcpu->arch.host_gscb; | |
3991 | restore_gs_cb(vcpu->arch.host_gscb); | |
3992 | preempt_enable(); | |
3993 | if (!vcpu->arch.host_gscb) | |
3994 | __ctl_clear_bit(2, 4); | |
3995 | vcpu->arch.host_gscb = NULL; | |
3996 | } | |
a3da7b4a | 3997 | /* SIE will save etoken directly into SDNX and therefore kvm_run */ |
b028ee3e DH |
3998 | } |
3999 | ||
b0c632db HC |
4000 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) |
4001 | { | |
8f2abe6a | 4002 | int rc; |
b0c632db | 4003 | |
460df4c1 PB |
4004 | if (kvm_run->immediate_exit) |
4005 | return -EINTR; | |
4006 | ||
200824f5 TH |
4007 | if (kvm_run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || |
4008 | kvm_run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) | |
4009 | return -EINVAL; | |
4010 | ||
accb757d CD |
4011 | vcpu_load(vcpu); |
4012 | ||
27291e21 DH |
4013 | if (guestdbg_exit_pending(vcpu)) { |
4014 | kvm_s390_prepare_debug_exit(vcpu); | |
accb757d CD |
4015 | rc = 0; |
4016 | goto out; | |
27291e21 DH |
4017 | } |
4018 | ||
20b7035c | 4019 | kvm_sigset_activate(vcpu); |
b0c632db | 4020 | |
6352e4d2 DH |
4021 | if (!kvm_s390_user_cpu_state_ctrl(vcpu->kvm)) { |
4022 | kvm_s390_vcpu_start(vcpu); | |
4023 | } else if (is_vcpu_stopped(vcpu)) { | |
ea2cdd27 | 4024 | pr_err_ratelimited("can't run stopped vcpu %d\n", |
6352e4d2 | 4025 | vcpu->vcpu_id); |
accb757d CD |
4026 | rc = -EINVAL; |
4027 | goto out; | |
6352e4d2 | 4028 | } |
b0c632db | 4029 | |
b028ee3e | 4030 | sync_regs(vcpu, kvm_run); |
db0758b2 | 4031 | enable_cpu_timer_accounting(vcpu); |
d7b0b5eb | 4032 | |
dab4079d | 4033 | might_fault(); |
a76ccff6 | 4034 | rc = __vcpu_run(vcpu); |
9ace903d | 4035 | |
b1d16c49 CE |
4036 | if (signal_pending(current) && !rc) { |
4037 | kvm_run->exit_reason = KVM_EXIT_INTR; | |
8f2abe6a | 4038 | rc = -EINTR; |
b1d16c49 | 4039 | } |
8f2abe6a | 4040 | |
27291e21 DH |
4041 | if (guestdbg_exit_pending(vcpu) && !rc) { |
4042 | kvm_s390_prepare_debug_exit(vcpu); | |
4043 | rc = 0; | |
4044 | } | |
4045 | ||
8f2abe6a | 4046 | if (rc == -EREMOTE) { |
71f116bf | 4047 | /* userspace support is needed, kvm_run has been prepared */ |
8f2abe6a CB |
4048 | rc = 0; |
4049 | } | |
b0c632db | 4050 | |
db0758b2 | 4051 | disable_cpu_timer_accounting(vcpu); |
b028ee3e | 4052 | store_regs(vcpu, kvm_run); |
d7b0b5eb | 4053 | |
20b7035c | 4054 | kvm_sigset_deactivate(vcpu); |
b0c632db | 4055 | |
b0c632db | 4056 | vcpu->stat.exit_userspace++; |
accb757d CD |
4057 | out: |
4058 | vcpu_put(vcpu); | |
7e8e6ab4 | 4059 | return rc; |
b0c632db HC |
4060 | } |
4061 | ||
b0c632db HC |
4062 | /* |
4063 | * store status at address | |
4064 | * we use have two special cases: | |
4065 | * KVM_S390_STORE_STATUS_NOADDR: -> 0x1200 on 64 bit | |
4066 | * KVM_S390_STORE_STATUS_PREFIXED: -> prefix | |
4067 | */ | |
d0bce605 | 4068 | int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa) |
b0c632db | 4069 | { |
092670cd | 4070 | unsigned char archmode = 1; |
9abc2a08 | 4071 | freg_t fprs[NUM_FPRS]; |
fda902cb | 4072 | unsigned int px; |
4287f247 | 4073 | u64 clkcomp, cputm; |
d0bce605 | 4074 | int rc; |
b0c632db | 4075 | |
d9a3a09a | 4076 | px = kvm_s390_get_prefix(vcpu); |
d0bce605 HC |
4077 | if (gpa == KVM_S390_STORE_STATUS_NOADDR) { |
4078 | if (write_guest_abs(vcpu, 163, &archmode, 1)) | |
b0c632db | 4079 | return -EFAULT; |
d9a3a09a | 4080 | gpa = 0; |
d0bce605 HC |
4081 | } else if (gpa == KVM_S390_STORE_STATUS_PREFIXED) { |
4082 | if (write_guest_real(vcpu, 163, &archmode, 1)) | |
b0c632db | 4083 | return -EFAULT; |
d9a3a09a MS |
4084 | gpa = px; |
4085 | } else | |
4086 | gpa -= __LC_FPREGS_SAVE_AREA; | |
9abc2a08 DH |
4087 | |
4088 | /* manually convert vector registers if necessary */ | |
4089 | if (MACHINE_HAS_VX) { | |
9522b37f | 4090 | convert_vx_to_fp(fprs, (__vector128 *) vcpu->run->s.regs.vrs); |
9abc2a08 DH |
4091 | rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA, |
4092 | fprs, 128); | |
4093 | } else { | |
4094 | rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA, | |
6fd8e67d | 4095 | vcpu->run->s.regs.fprs, 128); |
9abc2a08 | 4096 | } |
d9a3a09a | 4097 | rc |= write_guest_abs(vcpu, gpa + __LC_GPREGS_SAVE_AREA, |
d0bce605 | 4098 | vcpu->run->s.regs.gprs, 128); |
d9a3a09a | 4099 | rc |= write_guest_abs(vcpu, gpa + __LC_PSW_SAVE_AREA, |
d0bce605 | 4100 | &vcpu->arch.sie_block->gpsw, 16); |
d9a3a09a | 4101 | rc |= write_guest_abs(vcpu, gpa + __LC_PREFIX_SAVE_AREA, |
fda902cb | 4102 | &px, 4); |
d9a3a09a | 4103 | rc |= write_guest_abs(vcpu, gpa + __LC_FP_CREG_SAVE_AREA, |
9abc2a08 | 4104 | &vcpu->run->s.regs.fpc, 4); |
d9a3a09a | 4105 | rc |= write_guest_abs(vcpu, gpa + __LC_TOD_PROGREG_SAVE_AREA, |
d0bce605 | 4106 | &vcpu->arch.sie_block->todpr, 4); |
4287f247 | 4107 | cputm = kvm_s390_get_cpu_timer(vcpu); |
d9a3a09a | 4108 | rc |= write_guest_abs(vcpu, gpa + __LC_CPU_TIMER_SAVE_AREA, |
4287f247 | 4109 | &cputm, 8); |
178bd789 | 4110 | clkcomp = vcpu->arch.sie_block->ckc >> 8; |
d9a3a09a | 4111 | rc |= write_guest_abs(vcpu, gpa + __LC_CLOCK_COMP_SAVE_AREA, |
d0bce605 | 4112 | &clkcomp, 8); |
d9a3a09a | 4113 | rc |= write_guest_abs(vcpu, gpa + __LC_AREGS_SAVE_AREA, |
d0bce605 | 4114 | &vcpu->run->s.regs.acrs, 64); |
d9a3a09a | 4115 | rc |= write_guest_abs(vcpu, gpa + __LC_CREGS_SAVE_AREA, |
d0bce605 HC |
4116 | &vcpu->arch.sie_block->gcr, 128); |
4117 | return rc ? -EFAULT : 0; | |
b0c632db HC |
4118 | } |
4119 | ||
e879892c TH |
4120 | int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr) |
4121 | { | |
4122 | /* | |
4123 | * The guest FPRS and ACRS are in the host FPRS/ACRS due to the lazy | |
31d8b8d4 | 4124 | * switch in the run ioctl. Let's update our copies before we save |
e879892c TH |
4125 | * it into the save area |
4126 | */ | |
d0164ee2 | 4127 | save_fpu_regs(); |
9abc2a08 | 4128 | vcpu->run->s.regs.fpc = current->thread.fpu.fpc; |
e879892c TH |
4129 | save_access_regs(vcpu->run->s.regs.acrs); |
4130 | ||
4131 | return kvm_s390_store_status_unloaded(vcpu, addr); | |
4132 | } | |
4133 | ||
8ad35755 DH |
4134 | static void __disable_ibs_on_vcpu(struct kvm_vcpu *vcpu) |
4135 | { | |
4136 | kvm_check_request(KVM_REQ_ENABLE_IBS, vcpu); | |
8e236546 | 4137 | kvm_s390_sync_request(KVM_REQ_DISABLE_IBS, vcpu); |
8ad35755 DH |
4138 | } |
4139 | ||
4140 | static void __disable_ibs_on_all_vcpus(struct kvm *kvm) | |
4141 | { | |
4142 | unsigned int i; | |
4143 | struct kvm_vcpu *vcpu; | |
4144 | ||
4145 | kvm_for_each_vcpu(i, vcpu, kvm) { | |
4146 | __disable_ibs_on_vcpu(vcpu); | |
4147 | } | |
4148 | } | |
4149 | ||
4150 | static void __enable_ibs_on_vcpu(struct kvm_vcpu *vcpu) | |
4151 | { | |
09a400e7 DH |
4152 | if (!sclp.has_ibs) |
4153 | return; | |
8ad35755 | 4154 | kvm_check_request(KVM_REQ_DISABLE_IBS, vcpu); |
8e236546 | 4155 | kvm_s390_sync_request(KVM_REQ_ENABLE_IBS, vcpu); |
8ad35755 DH |
4156 | } |
4157 | ||
6852d7b6 DH |
4158 | void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu) |
4159 | { | |
8ad35755 DH |
4160 | int i, online_vcpus, started_vcpus = 0; |
4161 | ||
4162 | if (!is_vcpu_stopped(vcpu)) | |
4163 | return; | |
4164 | ||
6852d7b6 | 4165 | trace_kvm_s390_vcpu_start_stop(vcpu->vcpu_id, 1); |
8ad35755 | 4166 | /* Only one cpu at a time may enter/leave the STOPPED state. */ |
433b9ee4 | 4167 | spin_lock(&vcpu->kvm->arch.start_stop_lock); |
8ad35755 DH |
4168 | online_vcpus = atomic_read(&vcpu->kvm->online_vcpus); |
4169 | ||
4170 | for (i = 0; i < online_vcpus; i++) { | |
4171 | if (!is_vcpu_stopped(vcpu->kvm->vcpus[i])) | |
4172 | started_vcpus++; | |
4173 | } | |
4174 | ||
4175 | if (started_vcpus == 0) { | |
4176 | /* we're the only active VCPU -> speed it up */ | |
4177 | __enable_ibs_on_vcpu(vcpu); | |
4178 | } else if (started_vcpus == 1) { | |
4179 | /* | |
4180 | * As we are starting a second VCPU, we have to disable | |
4181 | * the IBS facility on all VCPUs to remove potentially | |
4182 | * oustanding ENABLE requests. | |
4183 | */ | |
4184 | __disable_ibs_on_all_vcpus(vcpu->kvm); | |
4185 | } | |
4186 | ||
9daecfc6 | 4187 | kvm_s390_clear_cpuflags(vcpu, CPUSTAT_STOPPED); |
8ad35755 DH |
4188 | /* |
4189 | * Another VCPU might have used IBS while we were offline. | |
4190 | * Let's play safe and flush the VCPU at startup. | |
4191 | */ | |
d3d692c8 | 4192 | kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); |
433b9ee4 | 4193 | spin_unlock(&vcpu->kvm->arch.start_stop_lock); |
8ad35755 | 4194 | return; |
6852d7b6 DH |
4195 | } |
4196 | ||
4197 | void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu) | |
4198 | { | |
8ad35755 DH |
4199 | int i, online_vcpus, started_vcpus = 0; |
4200 | struct kvm_vcpu *started_vcpu = NULL; | |
4201 | ||
4202 | if (is_vcpu_stopped(vcpu)) | |
4203 | return; | |
4204 | ||
6852d7b6 | 4205 | trace_kvm_s390_vcpu_start_stop(vcpu->vcpu_id, 0); |
8ad35755 | 4206 | /* Only one cpu at a time may enter/leave the STOPPED state. */ |
433b9ee4 | 4207 | spin_lock(&vcpu->kvm->arch.start_stop_lock); |
8ad35755 DH |
4208 | online_vcpus = atomic_read(&vcpu->kvm->online_vcpus); |
4209 | ||
32f5ff63 | 4210 | /* SIGP STOP and SIGP STOP AND STORE STATUS has been fully processed */ |
6cddd432 | 4211 | kvm_s390_clear_stop_irq(vcpu); |
32f5ff63 | 4212 | |
ef8f4f49 | 4213 | kvm_s390_set_cpuflags(vcpu, CPUSTAT_STOPPED); |
8ad35755 DH |
4214 | __disable_ibs_on_vcpu(vcpu); |
4215 | ||
4216 | for (i = 0; i < online_vcpus; i++) { | |
4217 | if (!is_vcpu_stopped(vcpu->kvm->vcpus[i])) { | |
4218 | started_vcpus++; | |
4219 | started_vcpu = vcpu->kvm->vcpus[i]; | |
4220 | } | |
4221 | } | |
4222 | ||
4223 | if (started_vcpus == 1) { | |
4224 | /* | |
4225 | * As we only have one VCPU left, we want to enable the | |
4226 | * IBS facility for that VCPU to speed it up. | |
4227 | */ | |
4228 | __enable_ibs_on_vcpu(started_vcpu); | |
4229 | } | |
4230 | ||
433b9ee4 | 4231 | spin_unlock(&vcpu->kvm->arch.start_stop_lock); |
8ad35755 | 4232 | return; |
6852d7b6 DH |
4233 | } |
4234 | ||
d6712df9 CH |
4235 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
4236 | struct kvm_enable_cap *cap) | |
4237 | { | |
4238 | int r; | |
4239 | ||
4240 | if (cap->flags) | |
4241 | return -EINVAL; | |
4242 | ||
4243 | switch (cap->cap) { | |
fa6b7fe9 CH |
4244 | case KVM_CAP_S390_CSS_SUPPORT: |
4245 | if (!vcpu->kvm->arch.css_support) { | |
4246 | vcpu->kvm->arch.css_support = 1; | |
c92ea7b9 | 4247 | VM_EVENT(vcpu->kvm, 3, "%s", "ENABLE: CSS support"); |
fa6b7fe9 CH |
4248 | trace_kvm_s390_enable_css(vcpu->kvm); |
4249 | } | |
4250 | r = 0; | |
4251 | break; | |
d6712df9 CH |
4252 | default: |
4253 | r = -EINVAL; | |
4254 | break; | |
4255 | } | |
4256 | return r; | |
4257 | } | |
4258 | ||
41408c28 TH |
4259 | static long kvm_s390_guest_mem_op(struct kvm_vcpu *vcpu, |
4260 | struct kvm_s390_mem_op *mop) | |
4261 | { | |
4262 | void __user *uaddr = (void __user *)mop->buf; | |
4263 | void *tmpbuf = NULL; | |
4264 | int r, srcu_idx; | |
4265 | const u64 supported_flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION | |
4266 | | KVM_S390_MEMOP_F_CHECK_ONLY; | |
4267 | ||
a13b03bb | 4268 | if (mop->flags & ~supported_flags || mop->ar >= NUM_ACRS || !mop->size) |
41408c28 TH |
4269 | return -EINVAL; |
4270 | ||
4271 | if (mop->size > MEM_OP_MAX_SIZE) | |
4272 | return -E2BIG; | |
4273 | ||
4274 | if (!(mop->flags & KVM_S390_MEMOP_F_CHECK_ONLY)) { | |
4275 | tmpbuf = vmalloc(mop->size); | |
4276 | if (!tmpbuf) | |
4277 | return -ENOMEM; | |
4278 | } | |
4279 | ||
4280 | srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); | |
4281 | ||
4282 | switch (mop->op) { | |
4283 | case KVM_S390_MEMOP_LOGICAL_READ: | |
4284 | if (mop->flags & KVM_S390_MEMOP_F_CHECK_ONLY) { | |
92c96321 DH |
4285 | r = check_gva_range(vcpu, mop->gaddr, mop->ar, |
4286 | mop->size, GACC_FETCH); | |
41408c28 TH |
4287 | break; |
4288 | } | |
4289 | r = read_guest(vcpu, mop->gaddr, mop->ar, tmpbuf, mop->size); | |
4290 | if (r == 0) { | |
4291 | if (copy_to_user(uaddr, tmpbuf, mop->size)) | |
4292 | r = -EFAULT; | |
4293 | } | |
4294 | break; | |
4295 | case KVM_S390_MEMOP_LOGICAL_WRITE: | |
4296 | if (mop->flags & KVM_S390_MEMOP_F_CHECK_ONLY) { | |
92c96321 DH |
4297 | r = check_gva_range(vcpu, mop->gaddr, mop->ar, |
4298 | mop->size, GACC_STORE); | |
41408c28 TH |
4299 | break; |
4300 | } | |
4301 | if (copy_from_user(tmpbuf, uaddr, mop->size)) { | |
4302 | r = -EFAULT; | |
4303 | break; | |
4304 | } | |
4305 | r = write_guest(vcpu, mop->gaddr, mop->ar, tmpbuf, mop->size); | |
4306 | break; | |
4307 | default: | |
4308 | r = -EINVAL; | |
4309 | } | |
4310 | ||
4311 | srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); | |
4312 | ||
4313 | if (r > 0 && (mop->flags & KVM_S390_MEMOP_F_INJECT_EXCEPTION) != 0) | |
4314 | kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); | |
4315 | ||
4316 | vfree(tmpbuf); | |
4317 | return r; | |
4318 | } | |
4319 | ||
5cb0944c PB |
4320 | long kvm_arch_vcpu_async_ioctl(struct file *filp, |
4321 | unsigned int ioctl, unsigned long arg) | |
b0c632db HC |
4322 | { |
4323 | struct kvm_vcpu *vcpu = filp->private_data; | |
4324 | void __user *argp = (void __user *)arg; | |
4325 | ||
93736624 | 4326 | switch (ioctl) { |
47b43c52 JF |
4327 | case KVM_S390_IRQ: { |
4328 | struct kvm_s390_irq s390irq; | |
4329 | ||
47b43c52 | 4330 | if (copy_from_user(&s390irq, argp, sizeof(s390irq))) |
9b062471 CD |
4331 | return -EFAULT; |
4332 | return kvm_s390_inject_vcpu(vcpu, &s390irq); | |
47b43c52 | 4333 | } |
93736624 | 4334 | case KVM_S390_INTERRUPT: { |
ba5c1e9b | 4335 | struct kvm_s390_interrupt s390int; |
53936b5b | 4336 | struct kvm_s390_irq s390irq = {}; |
ba5c1e9b CO |
4337 | |
4338 | if (copy_from_user(&s390int, argp, sizeof(s390int))) | |
9b062471 | 4339 | return -EFAULT; |
383d0b05 JF |
4340 | if (s390int_to_s390irq(&s390int, &s390irq)) |
4341 | return -EINVAL; | |
9b062471 | 4342 | return kvm_s390_inject_vcpu(vcpu, &s390irq); |
ba5c1e9b | 4343 | } |
9b062471 | 4344 | } |
5cb0944c PB |
4345 | return -ENOIOCTLCMD; |
4346 | } | |
4347 | ||
4348 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
4349 | unsigned int ioctl, unsigned long arg) | |
4350 | { | |
4351 | struct kvm_vcpu *vcpu = filp->private_data; | |
4352 | void __user *argp = (void __user *)arg; | |
4353 | int idx; | |
4354 | long r; | |
9b062471 CD |
4355 | |
4356 | vcpu_load(vcpu); | |
4357 | ||
4358 | switch (ioctl) { | |
b0c632db | 4359 | case KVM_S390_STORE_STATUS: |
800c1065 | 4360 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
55680890 | 4361 | r = kvm_s390_store_status_unloaded(vcpu, arg); |
800c1065 | 4362 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
bc923cc9 | 4363 | break; |
b0c632db HC |
4364 | case KVM_S390_SET_INITIAL_PSW: { |
4365 | psw_t psw; | |
4366 | ||
bc923cc9 | 4367 | r = -EFAULT; |
b0c632db | 4368 | if (copy_from_user(&psw, argp, sizeof(psw))) |
bc923cc9 AK |
4369 | break; |
4370 | r = kvm_arch_vcpu_ioctl_set_initial_psw(vcpu, psw); | |
4371 | break; | |
b0c632db | 4372 | } |
7de3f142 JF |
4373 | case KVM_S390_CLEAR_RESET: |
4374 | r = 0; | |
4375 | kvm_arch_vcpu_ioctl_clear_reset(vcpu); | |
4376 | break; | |
b0c632db | 4377 | case KVM_S390_INITIAL_RESET: |
7de3f142 JF |
4378 | r = 0; |
4379 | kvm_arch_vcpu_ioctl_initial_reset(vcpu); | |
4380 | break; | |
4381 | case KVM_S390_NORMAL_RESET: | |
4382 | r = 0; | |
4383 | kvm_arch_vcpu_ioctl_normal_reset(vcpu); | |
bc923cc9 | 4384 | break; |
14eebd91 CO |
4385 | case KVM_SET_ONE_REG: |
4386 | case KVM_GET_ONE_REG: { | |
4387 | struct kvm_one_reg reg; | |
4388 | r = -EFAULT; | |
4389 | if (copy_from_user(®, argp, sizeof(reg))) | |
4390 | break; | |
4391 | if (ioctl == KVM_SET_ONE_REG) | |
4392 | r = kvm_arch_vcpu_ioctl_set_one_reg(vcpu, ®); | |
4393 | else | |
4394 | r = kvm_arch_vcpu_ioctl_get_one_reg(vcpu, ®); | |
4395 | break; | |
4396 | } | |
27e0393f CO |
4397 | #ifdef CONFIG_KVM_S390_UCONTROL |
4398 | case KVM_S390_UCAS_MAP: { | |
4399 | struct kvm_s390_ucas_mapping ucasmap; | |
4400 | ||
4401 | if (copy_from_user(&ucasmap, argp, sizeof(ucasmap))) { | |
4402 | r = -EFAULT; | |
4403 | break; | |
4404 | } | |
4405 | ||
4406 | if (!kvm_is_ucontrol(vcpu->kvm)) { | |
4407 | r = -EINVAL; | |
4408 | break; | |
4409 | } | |
4410 | ||
4411 | r = gmap_map_segment(vcpu->arch.gmap, ucasmap.user_addr, | |
4412 | ucasmap.vcpu_addr, ucasmap.length); | |
4413 | break; | |
4414 | } | |
4415 | case KVM_S390_UCAS_UNMAP: { | |
4416 | struct kvm_s390_ucas_mapping ucasmap; | |
4417 | ||
4418 | if (copy_from_user(&ucasmap, argp, sizeof(ucasmap))) { | |
4419 | r = -EFAULT; | |
4420 | break; | |
4421 | } | |
4422 | ||
4423 | if (!kvm_is_ucontrol(vcpu->kvm)) { | |
4424 | r = -EINVAL; | |
4425 | break; | |
4426 | } | |
4427 | ||
4428 | r = gmap_unmap_segment(vcpu->arch.gmap, ucasmap.vcpu_addr, | |
4429 | ucasmap.length); | |
4430 | break; | |
4431 | } | |
4432 | #endif | |
ccc7910f | 4433 | case KVM_S390_VCPU_FAULT: { |
527e30b4 | 4434 | r = gmap_fault(vcpu->arch.gmap, arg, 0); |
ccc7910f CO |
4435 | break; |
4436 | } | |
d6712df9 CH |
4437 | case KVM_ENABLE_CAP: |
4438 | { | |
4439 | struct kvm_enable_cap cap; | |
4440 | r = -EFAULT; | |
4441 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
4442 | break; | |
4443 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
4444 | break; | |
4445 | } | |
41408c28 TH |
4446 | case KVM_S390_MEM_OP: { |
4447 | struct kvm_s390_mem_op mem_op; | |
4448 | ||
4449 | if (copy_from_user(&mem_op, argp, sizeof(mem_op)) == 0) | |
4450 | r = kvm_s390_guest_mem_op(vcpu, &mem_op); | |
4451 | else | |
4452 | r = -EFAULT; | |
4453 | break; | |
4454 | } | |
816c7667 JF |
4455 | case KVM_S390_SET_IRQ_STATE: { |
4456 | struct kvm_s390_irq_state irq_state; | |
4457 | ||
4458 | r = -EFAULT; | |
4459 | if (copy_from_user(&irq_state, argp, sizeof(irq_state))) | |
4460 | break; | |
4461 | if (irq_state.len > VCPU_IRQS_MAX_BUF || | |
4462 | irq_state.len == 0 || | |
4463 | irq_state.len % sizeof(struct kvm_s390_irq) > 0) { | |
4464 | r = -EINVAL; | |
4465 | break; | |
4466 | } | |
bb64da9a | 4467 | /* do not use irq_state.flags, it will break old QEMUs */ |
816c7667 JF |
4468 | r = kvm_s390_set_irq_state(vcpu, |
4469 | (void __user *) irq_state.buf, | |
4470 | irq_state.len); | |
4471 | break; | |
4472 | } | |
4473 | case KVM_S390_GET_IRQ_STATE: { | |
4474 | struct kvm_s390_irq_state irq_state; | |
4475 | ||
4476 | r = -EFAULT; | |
4477 | if (copy_from_user(&irq_state, argp, sizeof(irq_state))) | |
4478 | break; | |
4479 | if (irq_state.len == 0) { | |
4480 | r = -EINVAL; | |
4481 | break; | |
4482 | } | |
bb64da9a | 4483 | /* do not use irq_state.flags, it will break old QEMUs */ |
816c7667 JF |
4484 | r = kvm_s390_get_irq_state(vcpu, |
4485 | (__u8 __user *) irq_state.buf, | |
4486 | irq_state.len); | |
4487 | break; | |
4488 | } | |
b0c632db | 4489 | default: |
3e6afcf1 | 4490 | r = -ENOTTY; |
b0c632db | 4491 | } |
9b062471 CD |
4492 | |
4493 | vcpu_put(vcpu); | |
bc923cc9 | 4494 | return r; |
b0c632db HC |
4495 | } |
4496 | ||
1499fa80 | 4497 | vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
5b1c1493 CO |
4498 | { |
4499 | #ifdef CONFIG_KVM_S390_UCONTROL | |
4500 | if ((vmf->pgoff == KVM_S390_SIE_PAGE_OFFSET) | |
4501 | && (kvm_is_ucontrol(vcpu->kvm))) { | |
4502 | vmf->page = virt_to_page(vcpu->arch.sie_block); | |
4503 | get_page(vmf->page); | |
4504 | return 0; | |
4505 | } | |
4506 | #endif | |
4507 | return VM_FAULT_SIGBUS; | |
4508 | } | |
4509 | ||
b0c632db | 4510 | /* Section: memory related */ |
f7784b8e MT |
4511 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
4512 | struct kvm_memory_slot *memslot, | |
09170a49 | 4513 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 4514 | enum kvm_mr_change change) |
b0c632db | 4515 | { |
dd2887e7 NW |
4516 | /* A few sanity checks. We can have memory slots which have to be |
4517 | located/ended at a segment boundary (1MB). The memory in userland is | |
4518 | ok to be fragmented into various different vmas. It is okay to mmap() | |
4519 | and munmap() stuff in this slot after doing this call at any time */ | |
b0c632db | 4520 | |
598841ca | 4521 | if (mem->userspace_addr & 0xffffful) |
b0c632db HC |
4522 | return -EINVAL; |
4523 | ||
598841ca | 4524 | if (mem->memory_size & 0xffffful) |
b0c632db HC |
4525 | return -EINVAL; |
4526 | ||
a3a92c31 DD |
4527 | if (mem->guest_phys_addr + mem->memory_size > kvm->arch.mem_limit) |
4528 | return -EINVAL; | |
4529 | ||
f7784b8e MT |
4530 | return 0; |
4531 | } | |
4532 | ||
4533 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
09170a49 | 4534 | const struct kvm_userspace_memory_region *mem, |
9d4c197c | 4535 | struct kvm_memory_slot *old, |
f36f3f28 | 4536 | const struct kvm_memory_slot *new, |
8482644a | 4537 | enum kvm_mr_change change) |
f7784b8e | 4538 | { |
19ec166c | 4539 | int rc = 0; |
598841ca | 4540 | |
19ec166c CB |
4541 | switch (change) { |
4542 | case KVM_MR_DELETE: | |
4543 | rc = gmap_unmap_segment(kvm->arch.gmap, old->base_gfn * PAGE_SIZE, | |
4544 | old->npages * PAGE_SIZE); | |
4545 | break; | |
4546 | case KVM_MR_MOVE: | |
4547 | rc = gmap_unmap_segment(kvm->arch.gmap, old->base_gfn * PAGE_SIZE, | |
4548 | old->npages * PAGE_SIZE); | |
4549 | if (rc) | |
4550 | break; | |
4551 | /* FALLTHROUGH */ | |
4552 | case KVM_MR_CREATE: | |
4553 | rc = gmap_map_segment(kvm->arch.gmap, mem->userspace_addr, | |
4554 | mem->guest_phys_addr, mem->memory_size); | |
4555 | break; | |
4556 | case KVM_MR_FLAGS_ONLY: | |
4557 | break; | |
4558 | default: | |
4559 | WARN(1, "Unknown KVM MR CHANGE: %d\n", change); | |
4560 | } | |
598841ca | 4561 | if (rc) |
ea2cdd27 | 4562 | pr_warn("failed to commit memory region\n"); |
598841ca | 4563 | return; |
b0c632db HC |
4564 | } |
4565 | ||
60a37709 AY |
4566 | static inline unsigned long nonhyp_mask(int i) |
4567 | { | |
4568 | unsigned int nonhyp_fai = (sclp.hmfai << i * 2) >> 30; | |
4569 | ||
4570 | return 0x0000ffffffffffffUL >> (nonhyp_fai << 4); | |
4571 | } | |
4572 | ||
3491caf2 CB |
4573 | void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) |
4574 | { | |
4575 | vcpu->valid_wakeup = false; | |
4576 | } | |
4577 | ||
b0c632db HC |
4578 | static int __init kvm_s390_init(void) |
4579 | { | |
60a37709 AY |
4580 | int i; |
4581 | ||
07197fd0 | 4582 | if (!sclp.has_sief2) { |
8d43d570 | 4583 | pr_info("SIE is not available\n"); |
07197fd0 DH |
4584 | return -ENODEV; |
4585 | } | |
4586 | ||
a4499382 | 4587 | if (nested && hpage) { |
8d43d570 | 4588 | pr_info("A KVM host that supports nesting cannot back its KVM guests with huge pages\n"); |
a4499382 JF |
4589 | return -EINVAL; |
4590 | } | |
4591 | ||
60a37709 | 4592 | for (i = 0; i < 16; i++) |
c3b9e3e1 | 4593 | kvm_s390_fac_base[i] |= |
60a37709 AY |
4594 | S390_lowcore.stfle_fac_list[i] & nonhyp_mask(i); |
4595 | ||
9d8d5786 | 4596 | return kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); |
b0c632db HC |
4597 | } |
4598 | ||
4599 | static void __exit kvm_s390_exit(void) | |
4600 | { | |
4601 | kvm_exit(); | |
4602 | } | |
4603 | ||
4604 | module_init(kvm_s390_init); | |
4605 | module_exit(kvm_s390_exit); | |
566af940 CH |
4606 | |
4607 | /* | |
4608 | * Enable autoloading of the kvm module. | |
4609 | * Note that we add the module alias here instead of virt/kvm/kvm_main.c | |
4610 | * since x86 takes a different approach. | |
4611 | */ | |
4612 | #include <linux/miscdevice.h> | |
4613 | MODULE_ALIAS_MISCDEV(KVM_MINOR); | |
4614 | MODULE_ALIAS("devname:kvm"); |