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bbf45ba5 HB |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License, version 2, as | |
4 | * published by the Free Software Foundation. | |
5 | * | |
6 | * This program is distributed in the hope that it will be useful, | |
7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
9 | * GNU General Public License for more details. | |
10 | * | |
11 | * You should have received a copy of the GNU General Public License | |
12 | * along with this program; if not, write to the Free Software | |
13 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
14 | * | |
15 | * Copyright IBM Corp. 2007 | |
16 | * | |
17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> | |
18 | * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> | |
19 | */ | |
20 | ||
21 | #include <linux/errno.h> | |
22 | #include <linux/err.h> | |
23 | #include <linux/kvm_host.h> | |
bbf45ba5 | 24 | #include <linux/vmalloc.h> |
544c6761 | 25 | #include <linux/hrtimer.h> |
bbf45ba5 | 26 | #include <linux/fs.h> |
5a0e3ad6 | 27 | #include <linux/slab.h> |
eb1e4f43 | 28 | #include <linux/file.h> |
bbf45ba5 HB |
29 | #include <asm/cputable.h> |
30 | #include <asm/uaccess.h> | |
31 | #include <asm/kvm_ppc.h> | |
83aae4a8 | 32 | #include <asm/tlbflush.h> |
371fefd6 | 33 | #include <asm/cputhreads.h> |
bd2be683 | 34 | #include <asm/irqflags.h> |
73e75b41 | 35 | #include "timing.h" |
fad7b9b5 | 36 | #include "../mm/mmu_decl.h" |
bbf45ba5 | 37 | |
46f43c6e MT |
38 | #define CREATE_TRACE_POINTS |
39 | #include "trace.h" | |
40 | ||
bbf45ba5 HB |
41 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
42 | { | |
9202e076 | 43 | return !!(v->arch.pending_exceptions) || |
dfd4d47e | 44 | v->requests; |
bbf45ba5 HB |
45 | } |
46 | ||
b6d33834 CD |
47 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
48 | { | |
49 | return 1; | |
50 | } | |
51 | ||
03d25c5b AG |
52 | #ifndef CONFIG_KVM_BOOK3S_64_HV |
53 | /* | |
54 | * Common checks before entering the guest world. Call with interrupts | |
55 | * disabled. | |
56 | * | |
7ee78855 AG |
57 | * returns: |
58 | * | |
59 | * == 1 if we're ready to go into guest state | |
60 | * <= 0 if we need to go back to the host with return value | |
03d25c5b AG |
61 | */ |
62 | int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) | |
63 | { | |
7ee78855 | 64 | int r = 1; |
03d25c5b AG |
65 | |
66 | WARN_ON_ONCE(!irqs_disabled()); | |
67 | while (true) { | |
68 | if (need_resched()) { | |
69 | local_irq_enable(); | |
70 | cond_resched(); | |
71 | local_irq_disable(); | |
72 | continue; | |
73 | } | |
74 | ||
75 | if (signal_pending(current)) { | |
7ee78855 AG |
76 | kvmppc_account_exit(vcpu, SIGNAL_EXITS); |
77 | vcpu->run->exit_reason = KVM_EXIT_INTR; | |
78 | r = -EINTR; | |
03d25c5b AG |
79 | break; |
80 | } | |
81 | ||
5bd1cf11 SW |
82 | vcpu->mode = IN_GUEST_MODE; |
83 | ||
84 | /* | |
85 | * Reading vcpu->requests must happen after setting vcpu->mode, | |
86 | * so we don't miss a request because the requester sees | |
87 | * OUTSIDE_GUEST_MODE and assumes we'll be checking requests | |
88 | * before next entering the guest (and thus doesn't IPI). | |
89 | */ | |
03d25c5b | 90 | smp_mb(); |
5bd1cf11 | 91 | |
03d25c5b AG |
92 | if (vcpu->requests) { |
93 | /* Make sure we process requests preemptable */ | |
94 | local_irq_enable(); | |
95 | trace_kvm_check_requests(vcpu); | |
7c973a2e | 96 | r = kvmppc_core_check_requests(vcpu); |
03d25c5b | 97 | local_irq_disable(); |
7c973a2e AG |
98 | if (r > 0) |
99 | continue; | |
100 | break; | |
03d25c5b AG |
101 | } |
102 | ||
103 | if (kvmppc_core_prepare_to_enter(vcpu)) { | |
104 | /* interrupts got enabled in between, so we | |
105 | are back at square 1 */ | |
106 | continue; | |
107 | } | |
108 | ||
bd2be683 AG |
109 | #ifdef CONFIG_PPC64 |
110 | /* lazy EE magic */ | |
111 | hard_irq_disable(); | |
112 | if (lazy_irq_pending()) { | |
113 | /* Got an interrupt in between, try again */ | |
114 | local_irq_enable(); | |
115 | local_irq_disable(); | |
3766a4c6 | 116 | kvm_guest_exit(); |
bd2be683 AG |
117 | continue; |
118 | } | |
119 | ||
120 | trace_hardirqs_on(); | |
121 | #endif | |
122 | ||
3766a4c6 | 123 | kvm_guest_enter(); |
03d25c5b AG |
124 | break; |
125 | } | |
126 | ||
127 | return r; | |
128 | } | |
129 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ | |
130 | ||
2a342ed5 AG |
131 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
132 | { | |
133 | int nr = kvmppc_get_gpr(vcpu, 11); | |
134 | int r; | |
135 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
136 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
137 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
138 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
139 | unsigned long r2 = 0; | |
140 | ||
141 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
142 | /* 32 bit mode */ | |
143 | param1 &= 0xffffffff; | |
144 | param2 &= 0xffffffff; | |
145 | param3 &= 0xffffffff; | |
146 | param4 &= 0xffffffff; | |
147 | } | |
148 | ||
149 | switch (nr) { | |
fdcf8bd7 | 150 | case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE): |
5fc87407 AG |
151 | { |
152 | vcpu->arch.magic_page_pa = param1; | |
153 | vcpu->arch.magic_page_ea = param2; | |
154 | ||
b5904972 | 155 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
7508e16c | 156 | |
fdcf8bd7 | 157 | r = EV_SUCCESS; |
5fc87407 AG |
158 | break; |
159 | } | |
fdcf8bd7 SY |
160 | case KVM_HCALL_TOKEN(KVM_HC_FEATURES): |
161 | r = EV_SUCCESS; | |
bf7ca4bd | 162 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2) |
a4cd8b23 | 163 | /* XXX Missing magic page on 44x */ |
5fc87407 AG |
164 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
165 | #endif | |
2a342ed5 AG |
166 | |
167 | /* Second return value is in r4 */ | |
2a342ed5 | 168 | break; |
9202e076 LYB |
169 | case EV_HCALL_TOKEN(EV_IDLE): |
170 | r = EV_SUCCESS; | |
171 | kvm_vcpu_block(vcpu); | |
172 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); | |
173 | break; | |
2a342ed5 | 174 | default: |
fdcf8bd7 | 175 | r = EV_UNIMPLEMENTED; |
2a342ed5 AG |
176 | break; |
177 | } | |
178 | ||
7508e16c AG |
179 | kvmppc_set_gpr(vcpu, 4, r2); |
180 | ||
2a342ed5 AG |
181 | return r; |
182 | } | |
bbf45ba5 | 183 | |
af8f38b3 AG |
184 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
185 | { | |
186 | int r = false; | |
187 | ||
188 | /* We have to know what CPU to virtualize */ | |
189 | if (!vcpu->arch.pvr) | |
190 | goto out; | |
191 | ||
192 | /* PAPR only works with book3s_64 */ | |
193 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) | |
194 | goto out; | |
195 | ||
196 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
197 | /* HV KVM can only do PAPR mode for now */ | |
198 | if (!vcpu->arch.papr_enabled) | |
199 | goto out; | |
200 | #endif | |
201 | ||
d30f6e48 SW |
202 | #ifdef CONFIG_KVM_BOOKE_HV |
203 | if (!cpu_has_feature(CPU_FTR_EMB_HV)) | |
204 | goto out; | |
205 | #endif | |
206 | ||
af8f38b3 AG |
207 | r = true; |
208 | ||
209 | out: | |
210 | vcpu->arch.sane = r; | |
211 | return r ? 0 : -EINVAL; | |
212 | } | |
213 | ||
bbf45ba5 HB |
214 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
215 | { | |
216 | enum emulation_result er; | |
217 | int r; | |
218 | ||
219 | er = kvmppc_emulate_instruction(run, vcpu); | |
220 | switch (er) { | |
221 | case EMULATE_DONE: | |
222 | /* Future optimization: only reload non-volatiles if they were | |
223 | * actually modified. */ | |
224 | r = RESUME_GUEST_NV; | |
225 | break; | |
226 | case EMULATE_DO_MMIO: | |
227 | run->exit_reason = KVM_EXIT_MMIO; | |
228 | /* We must reload nonvolatiles because "update" load/store | |
229 | * instructions modify register state. */ | |
230 | /* Future optimization: only reload non-volatiles if they were | |
231 | * actually modified. */ | |
232 | r = RESUME_HOST_NV; | |
233 | break; | |
234 | case EMULATE_FAIL: | |
235 | /* XXX Deliver Program interrupt to guest. */ | |
236 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 237 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
238 | r = RESUME_HOST; |
239 | break; | |
240 | default: | |
5a33169e AG |
241 | WARN_ON(1); |
242 | r = RESUME_GUEST; | |
bbf45ba5 HB |
243 | } |
244 | ||
245 | return r; | |
246 | } | |
247 | ||
10474ae8 | 248 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 249 | { |
10474ae8 | 250 | return 0; |
bbf45ba5 HB |
251 | } |
252 | ||
253 | void kvm_arch_hardware_disable(void *garbage) | |
254 | { | |
255 | } | |
256 | ||
257 | int kvm_arch_hardware_setup(void) | |
258 | { | |
259 | return 0; | |
260 | } | |
261 | ||
262 | void kvm_arch_hardware_unsetup(void) | |
263 | { | |
264 | } | |
265 | ||
266 | void kvm_arch_check_processor_compat(void *rtn) | |
267 | { | |
9dd921cf | 268 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
269 | } |
270 | ||
e08b9637 | 271 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 272 | { |
e08b9637 CO |
273 | if (type) |
274 | return -EINVAL; | |
275 | ||
f9e0554d | 276 | return kvmppc_core_init_vm(kvm); |
bbf45ba5 HB |
277 | } |
278 | ||
d89f5eff | 279 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
280 | { |
281 | unsigned int i; | |
988a2cae | 282 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 283 | |
988a2cae GN |
284 | kvm_for_each_vcpu(i, vcpu, kvm) |
285 | kvm_arch_vcpu_free(vcpu); | |
286 | ||
287 | mutex_lock(&kvm->lock); | |
288 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
289 | kvm->vcpus[i] = NULL; | |
290 | ||
291 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
292 | |
293 | kvmppc_core_destroy_vm(kvm); | |
294 | ||
988a2cae | 295 | mutex_unlock(&kvm->lock); |
bbf45ba5 HB |
296 | } |
297 | ||
ad8ba2cd SY |
298 | void kvm_arch_sync_events(struct kvm *kvm) |
299 | { | |
300 | } | |
301 | ||
bbf45ba5 HB |
302 | int kvm_dev_ioctl_check_extension(long ext) |
303 | { | |
304 | int r; | |
305 | ||
306 | switch (ext) { | |
5ce941ee SW |
307 | #ifdef CONFIG_BOOKE |
308 | case KVM_CAP_PPC_BOOKE_SREGS: | |
f61c94bb | 309 | case KVM_CAP_PPC_BOOKE_WATCHDOG: |
1c810636 | 310 | case KVM_CAP_PPC_EPR: |
5ce941ee | 311 | #else |
e15a1137 | 312 | case KVM_CAP_PPC_SEGSTATE: |
1022fc3d | 313 | case KVM_CAP_PPC_HIOR: |
930b412a | 314 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 315 | #endif |
18978768 | 316 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 317 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 318 | case KVM_CAP_ENABLE_CAP: |
e24ed81f | 319 | case KVM_CAP_ONE_REG: |
0e673fb6 | 320 | case KVM_CAP_IOEVENTFD: |
5df554ad | 321 | case KVM_CAP_DEVICE_CTRL: |
de56a948 PM |
322 | r = 1; |
323 | break; | |
324 | #ifndef CONFIG_KVM_BOOK3S_64_HV | |
325 | case KVM_CAP_PPC_PAIRED_SINGLES: | |
ad0a048b | 326 | case KVM_CAP_PPC_OSI: |
15711e9c | 327 | case KVM_CAP_PPC_GET_PVINFO: |
bf7ca4bd | 328 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc | 329 | case KVM_CAP_SW_TLB: |
eb1e4f43 SW |
330 | #endif |
331 | #ifdef CONFIG_KVM_MPIC | |
332 | case KVM_CAP_IRQ_MPIC: | |
dc83b8bc | 333 | #endif |
e15a1137 AG |
334 | r = 1; |
335 | break; | |
588968b6 LV |
336 | case KVM_CAP_COALESCED_MMIO: |
337 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
338 | break; | |
54738c09 | 339 | #endif |
f31e65e1 | 340 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 | 341 | case KVM_CAP_SPAPR_TCE: |
32fad281 | 342 | case KVM_CAP_PPC_ALLOC_HTAB: |
54738c09 DG |
343 | r = 1; |
344 | break; | |
f31e65e1 BH |
345 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
346 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
371fefd6 PM |
347 | case KVM_CAP_PPC_SMT: |
348 | r = threads_per_core; | |
349 | break; | |
aa04b4cc PM |
350 | case KVM_CAP_PPC_RMA: |
351 | r = 1; | |
9e368f29 PM |
352 | /* PPC970 requires an RMA */ |
353 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
354 | r = 2; | |
aa04b4cc | 355 | break; |
f4800b1f | 356 | #endif |
342d3db7 | 357 | case KVM_CAP_SYNC_MMU: |
f4800b1f | 358 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
342d3db7 | 359 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; |
f4800b1f AG |
360 | #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
361 | r = 1; | |
362 | #else | |
363 | r = 0; | |
a2932923 PM |
364 | break; |
365 | #endif | |
366 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
367 | case KVM_CAP_PPC_HTAB_FD: | |
368 | r = 1; | |
369 | break; | |
de56a948 | 370 | #endif |
f4800b1f | 371 | break; |
b5434032 ME |
372 | case KVM_CAP_NR_VCPUS: |
373 | /* | |
374 | * Recommending a number of CPUs is somewhat arbitrary; we | |
375 | * return the number of present CPUs for -HV (since a host | |
376 | * will have secondary threads "offline"), and for other KVM | |
377 | * implementations just count online CPUs. | |
378 | */ | |
379 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
380 | r = num_present_cpus(); | |
381 | #else | |
382 | r = num_online_cpus(); | |
383 | #endif | |
384 | break; | |
385 | case KVM_CAP_MAX_VCPUS: | |
386 | r = KVM_MAX_VCPUS; | |
387 | break; | |
5b74716e BH |
388 | #ifdef CONFIG_PPC_BOOK3S_64 |
389 | case KVM_CAP_PPC_GET_SMMU_INFO: | |
390 | r = 1; | |
391 | break; | |
392 | #endif | |
bbf45ba5 HB |
393 | default: |
394 | r = 0; | |
395 | break; | |
396 | } | |
397 | return r; | |
398 | ||
399 | } | |
400 | ||
401 | long kvm_arch_dev_ioctl(struct file *filp, | |
402 | unsigned int ioctl, unsigned long arg) | |
403 | { | |
404 | return -EINVAL; | |
405 | } | |
406 | ||
db3fe4eb TY |
407 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
408 | struct kvm_memory_slot *dont) | |
409 | { | |
a66b48c3 | 410 | kvmppc_core_free_memslot(free, dont); |
db3fe4eb TY |
411 | } |
412 | ||
413 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) | |
414 | { | |
a66b48c3 | 415 | return kvmppc_core_create_memslot(slot, npages); |
db3fe4eb TY |
416 | } |
417 | ||
f7784b8e | 418 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
462fce46 | 419 | struct kvm_memory_slot *memslot, |
7b6195a9 TY |
420 | struct kvm_userspace_memory_region *mem, |
421 | enum kvm_mr_change change) | |
bbf45ba5 | 422 | { |
a66b48c3 | 423 | return kvmppc_core_prepare_memory_region(kvm, memslot, mem); |
bbf45ba5 HB |
424 | } |
425 | ||
f7784b8e | 426 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
462fce46 | 427 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
428 | const struct kvm_memory_slot *old, |
429 | enum kvm_mr_change change) | |
f7784b8e | 430 | { |
dfe49dbd | 431 | kvmppc_core_commit_memory_region(kvm, mem, old); |
f7784b8e MT |
432 | } |
433 | ||
2df72e9b MT |
434 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
435 | { | |
436 | } | |
f7784b8e | 437 | |
2df72e9b MT |
438 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
439 | struct kvm_memory_slot *slot) | |
34d4cb8f | 440 | { |
dfe49dbd | 441 | kvmppc_core_flush_memslot(kvm, slot); |
34d4cb8f MT |
442 | } |
443 | ||
bbf45ba5 HB |
444 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
445 | { | |
73e75b41 HB |
446 | struct kvm_vcpu *vcpu; |
447 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
448 | if (!IS_ERR(vcpu)) { |
449 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 450 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 451 | } |
73e75b41 | 452 | return vcpu; |
bbf45ba5 HB |
453 | } |
454 | ||
42897d86 MT |
455 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
456 | { | |
457 | return 0; | |
458 | } | |
459 | ||
bbf45ba5 HB |
460 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
461 | { | |
a595405d AG |
462 | /* Make sure we're not using the vcpu anymore */ |
463 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
464 | tasklet_kill(&vcpu->arch.tasklet); | |
465 | ||
73e75b41 | 466 | kvmppc_remove_vcpu_debugfs(vcpu); |
eb1e4f43 SW |
467 | |
468 | switch (vcpu->arch.irq_type) { | |
469 | case KVMPPC_IRQ_MPIC: | |
470 | kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu); | |
471 | break; | |
472 | } | |
473 | ||
db93f574 | 474 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
475 | } |
476 | ||
477 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
478 | { | |
479 | kvm_arch_vcpu_free(vcpu); | |
480 | } | |
481 | ||
482 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
483 | { | |
9dd921cf | 484 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
485 | } |
486 | ||
544c6761 AG |
487 | /* |
488 | * low level hrtimer wake routine. Because this runs in hardirq context | |
489 | * we schedule a tasklet to do the real work. | |
490 | */ | |
491 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
492 | { | |
493 | struct kvm_vcpu *vcpu; | |
494 | ||
495 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
496 | tasklet_schedule(&vcpu->arch.tasklet); | |
497 | ||
498 | return HRTIMER_NORESTART; | |
499 | } | |
500 | ||
bbf45ba5 HB |
501 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
502 | { | |
f61c94bb BB |
503 | int ret; |
504 | ||
544c6761 AG |
505 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
506 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
507 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 508 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 509 | |
09000adb BB |
510 | #ifdef CONFIG_KVM_EXIT_TIMING |
511 | mutex_init(&vcpu->arch.exit_timing_lock); | |
512 | #endif | |
f61c94bb BB |
513 | ret = kvmppc_subarch_vcpu_init(vcpu); |
514 | return ret; | |
bbf45ba5 HB |
515 | } |
516 | ||
517 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
518 | { | |
ecc0981f | 519 | kvmppc_mmu_destroy(vcpu); |
f61c94bb | 520 | kvmppc_subarch_vcpu_uninit(vcpu); |
bbf45ba5 HB |
521 | } |
522 | ||
523 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
524 | { | |
eab17672 SW |
525 | #ifdef CONFIG_BOOKE |
526 | /* | |
527 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
528 | * be used by the guest. | |
529 | * | |
530 | * On non-booke this is associated with Altivec and | |
531 | * is handled by code in book3s.c. | |
532 | */ | |
533 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
534 | #endif | |
9dd921cf | 535 | kvmppc_core_vcpu_load(vcpu, cpu); |
bbf45ba5 HB |
536 | } |
537 | ||
538 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
539 | { | |
9dd921cf | 540 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
541 | #ifdef CONFIG_BOOKE |
542 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
543 | #endif | |
bbf45ba5 HB |
544 | } |
545 | ||
bbf45ba5 HB |
546 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
547 | struct kvm_run *run) | |
548 | { | |
8e5b26b5 | 549 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
550 | } |
551 | ||
552 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
553 | struct kvm_run *run) | |
554 | { | |
69b61833 | 555 | u64 uninitialized_var(gpr); |
bbf45ba5 | 556 | |
8e5b26b5 | 557 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
558 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
559 | return; | |
560 | } | |
561 | ||
562 | if (vcpu->arch.mmio_is_bigendian) { | |
563 | switch (run->mmio.len) { | |
b104d066 | 564 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
565 | case 4: gpr = *(u32 *)run->mmio.data; break; |
566 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
567 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
568 | } |
569 | } else { | |
570 | /* Convert BE data from userland back to LE. */ | |
571 | switch (run->mmio.len) { | |
8e5b26b5 AG |
572 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
573 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
574 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
575 | } |
576 | } | |
8e5b26b5 | 577 | |
3587d534 AG |
578 | if (vcpu->arch.mmio_sign_extend) { |
579 | switch (run->mmio.len) { | |
580 | #ifdef CONFIG_PPC64 | |
581 | case 4: | |
582 | gpr = (s64)(s32)gpr; | |
583 | break; | |
584 | #endif | |
585 | case 2: | |
586 | gpr = (s64)(s16)gpr; | |
587 | break; | |
588 | case 1: | |
589 | gpr = (s64)(s8)gpr; | |
590 | break; | |
591 | } | |
592 | } | |
593 | ||
8e5b26b5 | 594 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 595 | |
b3c5d3c2 AG |
596 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
597 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
598 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
599 | break; | |
b3c5d3c2 AG |
600 | case KVM_MMIO_REG_FPR: |
601 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 602 | break; |
287d5611 | 603 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
604 | case KVM_MMIO_REG_QPR: |
605 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 606 | break; |
b3c5d3c2 AG |
607 | case KVM_MMIO_REG_FQPR: |
608 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
609 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 610 | break; |
287d5611 | 611 | #endif |
b104d066 AG |
612 | default: |
613 | BUG(); | |
614 | } | |
bbf45ba5 HB |
615 | } |
616 | ||
617 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
618 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
619 | { | |
620 | if (bytes > sizeof(run->mmio.data)) { | |
621 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
622 | run->mmio.len); | |
623 | } | |
624 | ||
625 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
626 | run->mmio.len = bytes; | |
627 | run->mmio.is_write = 0; | |
628 | ||
629 | vcpu->arch.io_gpr = rt; | |
630 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
631 | vcpu->mmio_needed = 1; | |
632 | vcpu->mmio_is_write = 0; | |
3587d534 | 633 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 | 634 | |
0e673fb6 AG |
635 | if (!kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, |
636 | bytes, &run->mmio.data)) { | |
637 | kvmppc_complete_mmio_load(vcpu, run); | |
638 | vcpu->mmio_needed = 0; | |
639 | return EMULATE_DONE; | |
640 | } | |
641 | ||
bbf45ba5 HB |
642 | return EMULATE_DO_MMIO; |
643 | } | |
644 | ||
3587d534 AG |
645 | /* Same as above, but sign extends */ |
646 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
647 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
648 | { | |
649 | int r; | |
650 | ||
3587d534 | 651 | vcpu->arch.mmio_sign_extend = 1; |
0e673fb6 | 652 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); |
3587d534 AG |
653 | |
654 | return r; | |
655 | } | |
656 | ||
bbf45ba5 | 657 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 658 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
659 | { |
660 | void *data = run->mmio.data; | |
661 | ||
662 | if (bytes > sizeof(run->mmio.data)) { | |
663 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
664 | run->mmio.len); | |
665 | } | |
666 | ||
667 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
668 | run->mmio.len = bytes; | |
669 | run->mmio.is_write = 1; | |
670 | vcpu->mmio_needed = 1; | |
671 | vcpu->mmio_is_write = 1; | |
672 | ||
673 | /* Store the value at the lowest bytes in 'data'. */ | |
674 | if (is_bigendian) { | |
675 | switch (bytes) { | |
b104d066 | 676 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
677 | case 4: *(u32 *)data = val; break; |
678 | case 2: *(u16 *)data = val; break; | |
679 | case 1: *(u8 *)data = val; break; | |
680 | } | |
681 | } else { | |
682 | /* Store LE value into 'data'. */ | |
683 | switch (bytes) { | |
684 | case 4: st_le32(data, val); break; | |
685 | case 2: st_le16(data, val); break; | |
686 | case 1: *(u8 *)data = val; break; | |
687 | } | |
688 | } | |
689 | ||
0e673fb6 AG |
690 | if (!kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, |
691 | bytes, &run->mmio.data)) { | |
0e673fb6 AG |
692 | vcpu->mmio_needed = 0; |
693 | return EMULATE_DONE; | |
694 | } | |
695 | ||
bbf45ba5 HB |
696 | return EMULATE_DO_MMIO; |
697 | } | |
698 | ||
699 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
700 | { | |
701 | int r; | |
702 | sigset_t sigsaved; | |
703 | ||
704 | if (vcpu->sigset_active) | |
705 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
706 | ||
707 | if (vcpu->mmio_needed) { | |
708 | if (!vcpu->mmio_is_write) | |
709 | kvmppc_complete_mmio_load(vcpu, run); | |
710 | vcpu->mmio_needed = 0; | |
711 | } else if (vcpu->arch.dcr_needed) { | |
712 | if (!vcpu->arch.dcr_is_write) | |
713 | kvmppc_complete_dcr_load(vcpu, run); | |
714 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
715 | } else if (vcpu->arch.osi_needed) { |
716 | u64 *gprs = run->osi.gprs; | |
717 | int i; | |
718 | ||
719 | for (i = 0; i < 32; i++) | |
720 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
721 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
722 | } else if (vcpu->arch.hcall_needed) { |
723 | int i; | |
724 | ||
725 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
726 | for (i = 0; i < 9; ++i) | |
727 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
728 | vcpu->arch.hcall_needed = 0; | |
1c810636 AG |
729 | #ifdef CONFIG_BOOKE |
730 | } else if (vcpu->arch.epr_needed) { | |
731 | kvmppc_set_epr(vcpu, run->epr.epr); | |
732 | vcpu->arch.epr_needed = 0; | |
733 | #endif | |
bbf45ba5 HB |
734 | } |
735 | ||
df6909e5 | 736 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
737 | |
738 | if (vcpu->sigset_active) | |
739 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
740 | ||
741 | return r; | |
742 | } | |
743 | ||
744 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
745 | { | |
19ccb76a | 746 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
4fe27d2a | 747 | kvmppc_core_dequeue_external(vcpu); |
19ccb76a PM |
748 | return 0; |
749 | } | |
750 | ||
751 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 752 | |
dfd4d47e | 753 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 754 | |
bbf45ba5 HB |
755 | return 0; |
756 | } | |
757 | ||
71fbfd5f AG |
758 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
759 | struct kvm_enable_cap *cap) | |
760 | { | |
761 | int r; | |
762 | ||
763 | if (cap->flags) | |
764 | return -EINVAL; | |
765 | ||
766 | switch (cap->cap) { | |
ad0a048b AG |
767 | case KVM_CAP_PPC_OSI: |
768 | r = 0; | |
769 | vcpu->arch.osi_enabled = true; | |
770 | break; | |
930b412a AG |
771 | case KVM_CAP_PPC_PAPR: |
772 | r = 0; | |
773 | vcpu->arch.papr_enabled = true; | |
774 | break; | |
1c810636 AG |
775 | case KVM_CAP_PPC_EPR: |
776 | r = 0; | |
5df554ad SW |
777 | if (cap->args[0]) |
778 | vcpu->arch.epr_flags |= KVMPPC_EPR_USER; | |
779 | else | |
780 | vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER; | |
1c810636 | 781 | break; |
f61c94bb BB |
782 | #ifdef CONFIG_BOOKE |
783 | case KVM_CAP_PPC_BOOKE_WATCHDOG: | |
784 | r = 0; | |
785 | vcpu->arch.watchdog_enabled = true; | |
786 | break; | |
787 | #endif | |
bf7ca4bd | 788 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
789 | case KVM_CAP_SW_TLB: { |
790 | struct kvm_config_tlb cfg; | |
791 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
792 | ||
793 | r = -EFAULT; | |
794 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
795 | break; | |
796 | ||
797 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
798 | break; | |
eb1e4f43 SW |
799 | } |
800 | #endif | |
801 | #ifdef CONFIG_KVM_MPIC | |
802 | case KVM_CAP_IRQ_MPIC: { | |
803 | struct file *filp; | |
804 | struct kvm_device *dev; | |
805 | ||
806 | r = -EBADF; | |
807 | filp = fget(cap->args[0]); | |
808 | if (!filp) | |
809 | break; | |
810 | ||
811 | r = -EPERM; | |
812 | dev = kvm_device_from_filp(filp); | |
813 | if (dev) | |
814 | r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]); | |
815 | ||
816 | fput(filp); | |
817 | break; | |
dc83b8bc SW |
818 | } |
819 | #endif | |
71fbfd5f AG |
820 | default: |
821 | r = -EINVAL; | |
822 | break; | |
823 | } | |
824 | ||
af8f38b3 AG |
825 | if (!r) |
826 | r = kvmppc_sanity_check(vcpu); | |
827 | ||
71fbfd5f AG |
828 | return r; |
829 | } | |
830 | ||
bbf45ba5 HB |
831 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
832 | struct kvm_mp_state *mp_state) | |
833 | { | |
834 | return -EINVAL; | |
835 | } | |
836 | ||
837 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
838 | struct kvm_mp_state *mp_state) | |
839 | { | |
840 | return -EINVAL; | |
841 | } | |
842 | ||
843 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
844 | unsigned int ioctl, unsigned long arg) | |
845 | { | |
846 | struct kvm_vcpu *vcpu = filp->private_data; | |
847 | void __user *argp = (void __user *)arg; | |
848 | long r; | |
849 | ||
93736624 AK |
850 | switch (ioctl) { |
851 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
852 | struct kvm_interrupt irq; |
853 | r = -EFAULT; | |
854 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 855 | goto out; |
bbf45ba5 | 856 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 857 | goto out; |
bbf45ba5 | 858 | } |
19483d14 | 859 | |
71fbfd5f AG |
860 | case KVM_ENABLE_CAP: |
861 | { | |
862 | struct kvm_enable_cap cap; | |
863 | r = -EFAULT; | |
864 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
865 | goto out; | |
866 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
867 | break; | |
868 | } | |
dc83b8bc | 869 | |
e24ed81f AG |
870 | case KVM_SET_ONE_REG: |
871 | case KVM_GET_ONE_REG: | |
872 | { | |
873 | struct kvm_one_reg reg; | |
874 | r = -EFAULT; | |
875 | if (copy_from_user(®, argp, sizeof(reg))) | |
876 | goto out; | |
877 | if (ioctl == KVM_SET_ONE_REG) | |
878 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
879 | else | |
880 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
881 | break; | |
882 | } | |
883 | ||
bf7ca4bd | 884 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
885 | case KVM_DIRTY_TLB: { |
886 | struct kvm_dirty_tlb dirty; | |
887 | r = -EFAULT; | |
888 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
889 | goto out; | |
890 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
891 | break; | |
892 | } | |
893 | #endif | |
bbf45ba5 HB |
894 | default: |
895 | r = -EINVAL; | |
896 | } | |
897 | ||
898 | out: | |
899 | return r; | |
900 | } | |
901 | ||
5b1c1493 CO |
902 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
903 | { | |
904 | return VM_FAULT_SIGBUS; | |
905 | } | |
906 | ||
15711e9c AG |
907 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
908 | { | |
784bafac SY |
909 | u32 inst_nop = 0x60000000; |
910 | #ifdef CONFIG_KVM_BOOKE_HV | |
911 | u32 inst_sc1 = 0x44000022; | |
912 | pvinfo->hcall[0] = inst_sc1; | |
913 | pvinfo->hcall[1] = inst_nop; | |
914 | pvinfo->hcall[2] = inst_nop; | |
915 | pvinfo->hcall[3] = inst_nop; | |
916 | #else | |
15711e9c AG |
917 | u32 inst_lis = 0x3c000000; |
918 | u32 inst_ori = 0x60000000; | |
15711e9c AG |
919 | u32 inst_sc = 0x44000002; |
920 | u32 inst_imm_mask = 0xffff; | |
921 | ||
922 | /* | |
923 | * The hypercall to get into KVM from within guest context is as | |
924 | * follows: | |
925 | * | |
926 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
927 | * ori r0, KVM_SC_MAGIC_R0@l | |
928 | * sc | |
929 | * nop | |
930 | */ | |
931 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
932 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
933 | pvinfo->hcall[2] = inst_sc; | |
934 | pvinfo->hcall[3] = inst_nop; | |
784bafac | 935 | #endif |
15711e9c | 936 | |
9202e076 LYB |
937 | pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE; |
938 | ||
15711e9c AG |
939 | return 0; |
940 | } | |
941 | ||
bbf45ba5 HB |
942 | long kvm_arch_vm_ioctl(struct file *filp, |
943 | unsigned int ioctl, unsigned long arg) | |
944 | { | |
5df554ad | 945 | struct kvm *kvm __maybe_unused = filp->private_data; |
15711e9c | 946 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
947 | long r; |
948 | ||
949 | switch (ioctl) { | |
15711e9c AG |
950 | case KVM_PPC_GET_PVINFO: { |
951 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 952 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
953 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
954 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
955 | r = -EFAULT; | |
956 | goto out; | |
957 | } | |
958 | ||
959 | break; | |
960 | } | |
f31e65e1 | 961 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 DG |
962 | case KVM_CREATE_SPAPR_TCE: { |
963 | struct kvm_create_spapr_tce create_tce; | |
54738c09 DG |
964 | |
965 | r = -EFAULT; | |
966 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
967 | goto out; | |
968 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
969 | goto out; | |
970 | } | |
f31e65e1 | 971 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
aa04b4cc | 972 | |
f31e65e1 | 973 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
aa04b4cc | 974 | case KVM_ALLOCATE_RMA: { |
aa04b4cc PM |
975 | struct kvm_allocate_rma rma; |
976 | ||
977 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
978 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
979 | r = -EFAULT; | |
980 | break; | |
981 | } | |
32fad281 PM |
982 | |
983 | case KVM_PPC_ALLOCATE_HTAB: { | |
32fad281 PM |
984 | u32 htab_order; |
985 | ||
986 | r = -EFAULT; | |
987 | if (get_user(htab_order, (u32 __user *)argp)) | |
988 | break; | |
989 | r = kvmppc_alloc_reset_hpt(kvm, &htab_order); | |
990 | if (r) | |
991 | break; | |
992 | r = -EFAULT; | |
993 | if (put_user(htab_order, (u32 __user *)argp)) | |
994 | break; | |
995 | r = 0; | |
996 | break; | |
997 | } | |
a2932923 PM |
998 | |
999 | case KVM_PPC_GET_HTAB_FD: { | |
a2932923 PM |
1000 | struct kvm_get_htab_fd ghf; |
1001 | ||
1002 | r = -EFAULT; | |
1003 | if (copy_from_user(&ghf, argp, sizeof(ghf))) | |
1004 | break; | |
1005 | r = kvm_vm_ioctl_get_htab_fd(kvm, &ghf); | |
1006 | break; | |
1007 | } | |
54738c09 DG |
1008 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
1009 | ||
5b74716e BH |
1010 | #ifdef CONFIG_PPC_BOOK3S_64 |
1011 | case KVM_PPC_GET_SMMU_INFO: { | |
5b74716e BH |
1012 | struct kvm_ppc_smmu_info info; |
1013 | ||
1014 | memset(&info, 0, sizeof(info)); | |
1015 | r = kvm_vm_ioctl_get_smmu_info(kvm, &info); | |
1016 | if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) | |
1017 | r = -EFAULT; | |
1018 | break; | |
1019 | } | |
1020 | #endif /* CONFIG_PPC_BOOK3S_64 */ | |
bbf45ba5 | 1021 | default: |
367e1319 | 1022 | r = -ENOTTY; |
bbf45ba5 HB |
1023 | } |
1024 | ||
15711e9c | 1025 | out: |
bbf45ba5 HB |
1026 | return r; |
1027 | } | |
1028 | ||
043cc4d7 SW |
1029 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
1030 | static unsigned long nr_lpids; | |
1031 | ||
1032 | long kvmppc_alloc_lpid(void) | |
1033 | { | |
1034 | long lpid; | |
1035 | ||
1036 | do { | |
1037 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); | |
1038 | if (lpid >= nr_lpids) { | |
1039 | pr_err("%s: No LPIDs free\n", __func__); | |
1040 | return -ENOMEM; | |
1041 | } | |
1042 | } while (test_and_set_bit(lpid, lpid_inuse)); | |
1043 | ||
1044 | return lpid; | |
1045 | } | |
1046 | ||
1047 | void kvmppc_claim_lpid(long lpid) | |
1048 | { | |
1049 | set_bit(lpid, lpid_inuse); | |
1050 | } | |
1051 | ||
1052 | void kvmppc_free_lpid(long lpid) | |
1053 | { | |
1054 | clear_bit(lpid, lpid_inuse); | |
1055 | } | |
1056 | ||
1057 | void kvmppc_init_lpid(unsigned long nr_lpids_param) | |
1058 | { | |
1059 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); | |
1060 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); | |
1061 | } | |
1062 | ||
bbf45ba5 HB |
1063 | int kvm_arch_init(void *opaque) |
1064 | { | |
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | void kvm_arch_exit(void) | |
1069 | { | |
1070 | } |