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0e60a699
AG		 1/*
2 * QEMU S390x KVM implementation
3 *
4 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
ccb084d3 5 * Copyright IBM Corp. 2012
0e60a699
AG		 6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
ccb084d3
CB		 17 * Contributions after 2012-10-29 are licensed under the terms of the
18 * GNU GPL, version 2 or (at your option) any later version.
19 *
20 * You should have received a copy of the GNU (Lesser) General Public
0e60a699
AG		 21 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 */
23
9615495a 24#include "qemu/osdep.h"
0e60a699 25#include <sys/ioctl.h>
0e60a699
AG		 26
27#include <linux/kvm.h>
28#include <asm/ptrace.h>
29
30#include "qemu-common.h"
33c11879 31#include "cpu.h"
d49b6836 32#include "qemu/error-report.h"
1de7afc9 33#include "qemu/timer.h"
9c17d615 34#include "sysemu/sysemu.h"
8195d899 35#include "sysemu/hw_accel.h"
4cb88c3c 36#include "hw/hw.h"
9c17d615 37#include "sysemu/device_tree.h"
08eb8c85 38#include "qapi/qmp/qjson.h"
770a6379 39#include "exec/gdbstub.h"
18ff9494 40#include "exec/address-spaces.h"
860643bc 41#include "trace.h"
3a449690 42#include "qapi-event.h"
863f6f52 43#include "hw/s390x/s390-pci-inst.h"
9e03a040 44#include "hw/s390x/s390-pci-bus.h"
e91e972c 45#include "hw/s390x/ipl.h"
f07177a5 46#include "hw/s390x/ebcdic.h"
4c663752 47#include "exec/memattrs.h"
9700230b 48#include "hw/s390x/s390-virtio-ccw.h"
0e60a699 49
08564ecd
DA		 50#ifndef DEBUG_KVM
51#define DEBUG_KVM 0
0e60a699
AG		 52#endif
53
08564ecd
DA		 54#define DPRINTF(fmt, ...) do { \
55 if (DEBUG_KVM) { \
56 fprintf(stderr, fmt, ## __VA_ARGS__); \
57 } \
58} while (0);
59
2b147555
DD		 60#define kvm_vm_check_mem_attr(s, attr) \
61 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
62
0e60a699
AG		 63#define IPA0_DIAG 0x8300
64#define IPA0_SIGP 0xae00
09b99878
CH		 65#define IPA0_B2 0xb200
66#define IPA0_B9 0xb900
67#define IPA0_EB 0xeb00
863f6f52 68#define IPA0_E3 0xe300
0e60a699 69
1eecf41b
FB		 70#define PRIV_B2_SCLP_CALL 0x20
71#define PRIV_B2_CSCH 0x30
72#define PRIV_B2_HSCH 0x31
73#define PRIV_B2_MSCH 0x32
74#define PRIV_B2_SSCH 0x33
75#define PRIV_B2_STSCH 0x34
76#define PRIV_B2_TSCH 0x35
77#define PRIV_B2_TPI 0x36
78#define PRIV_B2_SAL 0x37
79#define PRIV_B2_RSCH 0x38
80#define PRIV_B2_STCRW 0x39
81#define PRIV_B2_STCPS 0x3a
82#define PRIV_B2_RCHP 0x3b
83#define PRIV_B2_SCHM 0x3c
84#define PRIV_B2_CHSC 0x5f
85#define PRIV_B2_SIGA 0x74
86#define PRIV_B2_XSCH 0x76
87
88#define PRIV_EB_SQBS 0x8a
863f6f52
FB		 89#define PRIV_EB_PCISTB 0xd0
90#define PRIV_EB_SIC 0xd1
1eecf41b
FB		 91
92#define PRIV_B9_EQBS 0x9c
863f6f52
FB		 93#define PRIV_B9_CLP 0xa0
94#define PRIV_B9_PCISTG 0xd0
95#define PRIV_B9_PCILG 0xd2
96#define PRIV_B9_RPCIT 0xd3
97
98#define PRIV_E3_MPCIFC 0xd0
99#define PRIV_E3_STPCIFC 0xd4
1eecf41b 100
8fc639af 101#define DIAG_TIMEREVENT 0x288
268846ba 102#define DIAG_IPL 0x308
0e60a699
AG		 103#define DIAG_KVM_HYPERCALL 0x500
104#define DIAG_KVM_BREAKPOINT 0x501
105
0e60a699 106#define ICPT_INSTRUCTION 0x04
6449a41a 107#define ICPT_PROGRAM 0x08
a2689242 108#define ICPT_EXT_INT 0x14
0e60a699
AG		 109#define ICPT_WAITPSW 0x1c
110#define ICPT_SOFT_INTERCEPT 0x24
111#define ICPT_CPU_STOP 0x28
b60fae32 112#define ICPT_OPEREXC 0x2c
0e60a699
AG		 113#define ICPT_IO 0x40
114
3cda44f7
JF		 115#define NR_LOCAL_IRQS 32
116/*
117 * Needs to be big enough to contain max_cpus emergency signals
118 * and in addition NR_LOCAL_IRQS interrupts
119 */
120#define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
121 (max_cpus + NR_LOCAL_IRQS))
122
770a6379
DH		 123static CPUWatchpoint hw_watchpoint;
124/*
125 * We don't use a list because this structure is also used to transmit the
126 * hardware breakpoints to the kernel.
127 */
128static struct kvm_hw_breakpoint *hw_breakpoints;
129static int nb_hw_breakpoints;
130
94a8d39a
JK		 131const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
132 KVM_CAP_LAST_INFO
133};
134
f9530c32
CB		 135static QemuMutex qemu_sigp_mutex;
136
5b08b344 137static int cap_sync_regs;
819bd309 138static int cap_async_pf;
a9bcd1b8 139static int cap_mem_op;
1191c949 140static int cap_s390_irq;
9700230b 141static int cap_ri;
5b08b344 142
dc622deb 143static void *legacy_s390_alloc(size_t size, uint64_t *align);
91138037 144
a310b283
DD		 145static int kvm_s390_query_mem_limit(KVMState *s, uint64_t *memory_limit)
146{
147 struct kvm_device_attr attr = {
148 .group = KVM_S390_VM_MEM_CTRL,
149 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
150 .addr = (uint64_t) memory_limit,
151 };
152
153 return kvm_vm_ioctl(s, KVM_GET_DEVICE_ATTR, &attr);
154}
155
156int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit)
157{
158 int rc;
159
160 struct kvm_device_attr attr = {
161 .group = KVM_S390_VM_MEM_CTRL,
162 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
163 .addr = (uint64_t) &new_limit,
164 };
165
2b147555 166 if (!kvm_vm_check_mem_attr(s, KVM_S390_VM_MEM_LIMIT_SIZE)) {
a310b283
DD		 167 return 0;
168 }
169
170 rc = kvm_s390_query_mem_limit(s, hw_limit);
171 if (rc) {
172 return rc;
173 } else if (*hw_limit < new_limit) {
174 return -E2BIG;
175 }
176
177 return kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
178}
179
07059eff
DH		 180static bool kvm_s390_cmma_available(void)
181{
182 static bool initialized, value;
183
184 if (!initialized) {
185 initialized = true;
186 value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) &&
187 kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA);
188 }
189 return value;
190}
191
1cd4e0f6 192void kvm_s390_cmma_reset(void)
4cb88c3c
DD		 193{
194 int rc;
4cb88c3c
DD		 195 struct kvm_device_attr attr = {
196 .group = KVM_S390_VM_MEM_CTRL,
197 .attr = KVM_S390_VM_MEM_CLR_CMMA,
198 };
199
0cf4d747 200 if (mem_path || !kvm_s390_cmma_available()) {
07059eff
DH		 201 return;
202 }
203
1cd4e0f6 204 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
4cb88c3c
DD		 205 trace_kvm_clear_cmma(rc);
206}
207
07059eff 208static void kvm_s390_enable_cmma(void)
4cb88c3c
DD		 209{
210 int rc;
211 struct kvm_device_attr attr = {
212 .group = KVM_S390_VM_MEM_CTRL,
213 .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
214 };
215
07059eff 216 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
4cb88c3c
DD		 217 trace_kvm_enable_cmma(rc);
218}
219
2eb1cd07
TK		 220static void kvm_s390_set_attr(uint64_t attr)
221{
222 struct kvm_device_attr attribute = {
223 .group = KVM_S390_VM_CRYPTO,
224 .attr = attr,
225 };
226
227 int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
228
229 if (ret) {
230 error_report("Failed to set crypto device attribute %lu: %s",
231 attr, strerror(-ret));
232 }
233}
234
235static void kvm_s390_init_aes_kw(void)
236{
237 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
238
239 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
240 NULL)) {
241 attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
242 }
243
244 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
245 kvm_s390_set_attr(attr);
246 }
247}
248
249static void kvm_s390_init_dea_kw(void)
250{
251 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
252
253 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
254 NULL)) {
255 attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
256 }
257
258 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
259 kvm_s390_set_attr(attr);
260 }
261}
262
4ab72920 263void kvm_s390_crypto_reset(void)
2eb1cd07 264{
c85d21c7
DH		 265 if (s390_has_feat(S390_FEAT_MSA_EXT_3)) {
266 kvm_s390_init_aes_kw();
267 kvm_s390_init_dea_kw();
268 }
2eb1cd07
TK		 269}
270
b16565b3 271int kvm_arch_init(MachineState *ms, KVMState *s)
0e60a699 272{
5b08b344 273 cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
819bd309 274 cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
a9bcd1b8 275 cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
1191c949 276 cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
4cb88c3c 277
91138037
MA		 278 if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
279 || !kvm_check_extension(s, KVM_CAP_S390_COW)) {
280 phys_mem_set_alloc(legacy_s390_alloc);
281 }
f16d3f58
DH		 282
283 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
46ca6b3b 284 kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
f07177a5 285 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
9700230b
FZ		 286 if (ri_allowed()) {
287 if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
288 cap_ri = 1;
289 }
290 }
f16d3f58 291
f9530c32
CB		 292 qemu_mutex_init(&qemu_sigp_mutex);
293
0e60a699
AG		 294 return 0;
295}
296
d525ffab
PB		 297int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
298{
299 return 0;
300}
301
b164e48e
EH		 302unsigned long kvm_arch_vcpu_id(CPUState *cpu)
303{
304 return cpu->cpu_index;
305}
306
c9e659c9 307int kvm_arch_init_vcpu(CPUState *cs)
0e60a699 308{
c9e659c9
DH		 309 S390CPU *cpu = S390_CPU(cs);
310 kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
3cda44f7 311 cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE);
1c9d2a1d 312 return 0;
0e60a699
AG		 313}
314
50a2c6e5 315void kvm_s390_reset_vcpu(S390CPU *cpu)
0e60a699 316{
50a2c6e5
PB		 317 CPUState *cs = CPU(cpu);
318
419831d7
AG		 319 /* The initial reset call is needed here to reset in-kernel
320 * vcpu data that we can't access directly from QEMU
321 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
322 * Before this ioctl cpu_synchronize_state() is called in common kvm
323 * code (kvm-all) */
50a2c6e5 324 if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
81b07353 325 error_report("Initial CPU reset failed on CPU %i", cs->cpu_index);
70bada03 326 }
0e60a699
AG		 327}
328
fdb78ec0
DH		 329static int can_sync_regs(CPUState *cs, int regs)
330{
331 return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
332}
333
20d695a9 334int kvm_arch_put_registers(CPUState *cs, int level)
0e60a699 335{
20d695a9
AF		 336 S390CPU *cpu = S390_CPU(cs);
337 CPUS390XState *env = &cpu->env;
5b08b344 338 struct kvm_sregs sregs;
0e60a699 339 struct kvm_regs regs;
e6eef7c2 340 struct kvm_fpu fpu = {};
860643bc 341 int r;
0e60a699
AG		 342 int i;
343
5b08b344 344 /* always save the PSW and the GPRS*/
f7575c96
AF		 345 cs->kvm_run->psw_addr = env->psw.addr;
346 cs->kvm_run->psw_mask = env->psw.mask;
0e60a699 347
fdb78ec0 348 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
5b08b344 349 for (i = 0; i < 16; i++) {
f7575c96
AF		 350 cs->kvm_run->s.regs.gprs[i] = env->regs[i];
351 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
5b08b344
CB		 352 }
353 } else {
354 for (i = 0; i < 16; i++) {
355 regs.gprs[i] = env->regs[i];
356 }
860643bc
CB		 357 r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs);
358 if (r < 0) {
359 return r;
5b08b344 360 }
0e60a699
AG		 361 }
362
fcb79802
EF		 363 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
364 for (i = 0; i < 32; i++) {
365 cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0].ll;
366 cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1].ll;
367 }
368 cs->kvm_run->s.regs.fpc = env->fpc;
369 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
5ab0e547
DH		 370 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
371 for (i = 0; i < 16; i++) {
372 cs->kvm_run->s.regs.fprs[i] = get_freg(env, i)->ll;
373 }
374 cs->kvm_run->s.regs.fpc = env->fpc;
375 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
fcb79802
EF		 376 } else {
377 /* Floating point */
378 for (i = 0; i < 16; i++) {
379 fpu.fprs[i] = get_freg(env, i)->ll;
380 }
381 fpu.fpc = env->fpc;
85ad6230 382
fcb79802
EF		 383 r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
384 if (r < 0) {
385 return r;
386 }
85ad6230
JH		 387 }
388
44c68de0
DD		 389 /* Do we need to save more than that? */
390 if (level == KVM_PUT_RUNTIME_STATE) {
391 return 0;
392 }
420840e5 393
59ac1532
DH		 394 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
395 cs->kvm_run->s.regs.cputm = env->cputm;
396 cs->kvm_run->s.regs.ckc = env->ckc;
397 cs->kvm_run->s.regs.todpr = env->todpr;
398 cs->kvm_run->s.regs.gbea = env->gbea;
399 cs->kvm_run->s.regs.pp = env->pp;
400 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
401 } else {
402 /*
403 * These ONE_REGS are not protected by a capability. As they are only
404 * necessary for migration we just trace a possible error, but don't
405 * return with an error return code.
406 */
407 kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
408 kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
409 kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
410 kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
411 kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
412 }
413
9700230b
FZ		 414 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
415 memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64);
416 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB;
417 }
418
59ac1532
DH		 419 /* pfault parameters */
420 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
421 cs->kvm_run->s.regs.pft = env->pfault_token;
422 cs->kvm_run->s.regs.pfs = env->pfault_select;
423 cs->kvm_run->s.regs.pfc = env->pfault_compare;
424 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
425 } else if (cap_async_pf) {
860643bc
CB		 426 r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
427 if (r < 0) {
428 return r;
819bd309 429 }
860643bc
CB		 430 r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
431 if (r < 0) {
432 return r;
819bd309 433 }
860643bc
CB		 434 r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
435 if (r < 0) {
436 return r;
819bd309
DD		 437 }
438 }
439
fdb78ec0
DH		 440 /* access registers and control registers*/
441 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
5b08b344 442 for (i = 0; i < 16; i++) {
f7575c96
AF		 443 cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
444 cs->kvm_run->s.regs.crs[i] = env->cregs[i];
5b08b344 445 }
f7575c96
AF		 446 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
447 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
5b08b344
CB		 448 } else {
449 for (i = 0; i < 16; i++) {
450 sregs.acrs[i] = env->aregs[i];
451 sregs.crs[i] = env->cregs[i];
452 }
860643bc
CB		 453 r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
454 if (r < 0) {
455 return r;
5b08b344
CB		 456 }
457 }
0e60a699 458
5b08b344 459 /* Finally the prefix */
fdb78ec0 460 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
f7575c96
AF		 461 cs->kvm_run->s.regs.prefix = env->psa;
462 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
5b08b344
CB		 463 } else {
464 /* prefix is only supported via sync regs */
465 }
466 return 0;
0e60a699
AG		 467}
468
20d695a9 469int kvm_arch_get_registers(CPUState *cs)
420840e5
JH		 470{
471 S390CPU *cpu = S390_CPU(cs);
472 CPUS390XState *env = &cpu->env;
5b08b344 473 struct kvm_sregs sregs;
0e60a699 474 struct kvm_regs regs;
85ad6230 475 struct kvm_fpu fpu;
44c68de0 476 int i, r;
420840e5 477
5b08b344 478 /* get the PSW */
f7575c96
AF		 479 env->psw.addr = cs->kvm_run->psw_addr;
480 env->psw.mask = cs->kvm_run->psw_mask;
5b08b344
CB		 481
482 /* the GPRS */
fdb78ec0 483 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
5b08b344 484 for (i = 0; i < 16; i++) {
f7575c96 485 env->regs[i] = cs->kvm_run->s.regs.gprs[i];
5b08b344
CB		 486 }
487 } else {
44c68de0
DD		 488 r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
489 if (r < 0) {
490 return r;
5b08b344
CB		 491 }
492 for (i = 0; i < 16; i++) {
493 env->regs[i] = regs.gprs[i];
494 }
0e60a699
AG		 495 }
496
5b08b344 497 /* The ACRS and CRS */
fdb78ec0 498 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
5b08b344 499 for (i = 0; i < 16; i++) {
f7575c96
AF		 500 env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
501 env->cregs[i] = cs->kvm_run->s.regs.crs[i];
5b08b344
CB		 502 }
503 } else {
44c68de0
DD		 504 r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
505 if (r < 0) {
506 return r;
5b08b344
CB		 507 }
508 for (i = 0; i < 16; i++) {
509 env->aregs[i] = sregs.acrs[i];
510 env->cregs[i] = sregs.crs[i];
511 }
0e60a699
AG		 512 }
513
fcb79802
EF		 514 /* Floating point and vector registers */
515 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
516 for (i = 0; i < 32; i++) {
517 env->vregs[i][0].ll = cs->kvm_run->s.regs.vrs[i][0];
518 env->vregs[i][1].ll = cs->kvm_run->s.regs.vrs[i][1];
519 }
520 env->fpc = cs->kvm_run->s.regs.fpc;
5ab0e547
DH		 521 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
522 for (i = 0; i < 16; i++) {
523 get_freg(env, i)->ll = cs->kvm_run->s.regs.fprs[i];
524 }
525 env->fpc = cs->kvm_run->s.regs.fpc;
fcb79802
EF		 526 } else {
527 r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
528 if (r < 0) {
529 return r;
530 }
531 for (i = 0; i < 16; i++) {
532 get_freg(env, i)->ll = fpu.fprs[i];
533 }
534 env->fpc = fpu.fpc;
85ad6230 535 }
85ad6230 536
44c68de0 537 /* The prefix */
fdb78ec0 538 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
f7575c96 539 env->psa = cs->kvm_run->s.regs.prefix;
5b08b344 540 }
0e60a699 541
59ac1532
DH		 542 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
543 env->cputm = cs->kvm_run->s.regs.cputm;
544 env->ckc = cs->kvm_run->s.regs.ckc;
545 env->todpr = cs->kvm_run->s.regs.todpr;
546 env->gbea = cs->kvm_run->s.regs.gbea;
547 env->pp = cs->kvm_run->s.regs.pp;
548 } else {
549 /*
550 * These ONE_REGS are not protected by a capability. As they are only
551 * necessary for migration we just trace a possible error, but don't
552 * return with an error return code.
553 */
554 kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
555 kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
556 kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
557 kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
558 kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
559 }
560
9700230b
FZ		 561 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
562 memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64);
563 }
564
59ac1532
DH		 565 /* pfault parameters */
566 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
567 env->pfault_token = cs->kvm_run->s.regs.pft;
568 env->pfault_select = cs->kvm_run->s.regs.pfs;
569 env->pfault_compare = cs->kvm_run->s.regs.pfc;
570 } else if (cap_async_pf) {
860643bc 571 r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
819bd309
DD		 572 if (r < 0) {
573 return r;
574 }
860643bc 575 r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
819bd309
DD		 576 if (r < 0) {
577 return r;
578 }
860643bc 579 r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
819bd309
DD		 580 if (r < 0) {
581 return r;
582 }
583 }
584
0e60a699
AG		 585 return 0;
586}
587
3f9e59bb
JH		 588int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
589{
590 int r;
591 struct kvm_device_attr attr = {
592 .group = KVM_S390_VM_TOD,
593 .attr = KVM_S390_VM_TOD_LOW,
594 .addr = (uint64_t)tod_low,
595 };
596
597 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
598 if (r) {
599 return r;
600 }
601
602 attr.attr = KVM_S390_VM_TOD_HIGH;
603 attr.addr = (uint64_t)tod_high;
604 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
605}
606
607int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
608{
609 int r;
610
611 struct kvm_device_attr attr = {
612 .group = KVM_S390_VM_TOD,
613 .attr = KVM_S390_VM_TOD_LOW,
614 .addr = (uint64_t)tod_low,
615 };
616
617 r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
618 if (r) {
619 return r;
620 }
621
622 attr.attr = KVM_S390_VM_TOD_HIGH;
623 attr.addr = (uint64_t)tod_high;
624 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
625}
626
a9bcd1b8
TH		 627/**
628 * kvm_s390_mem_op:
629 * @addr: the logical start address in guest memory
6cb1e49d 630 * @ar: the access register number
a9bcd1b8 631 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
67cc32eb 632 * @len: length that should be transferred
a9bcd1b8 633 * @is_write: true = write, false = read
67cc32eb 634 * Returns: 0 on success, non-zero if an exception or error occurred
a9bcd1b8
TH		 635 *
636 * Use KVM ioctl to read/write from/to guest memory. An access exception
637 * is injected into the vCPU in case of translation errors.
638 */
6cb1e49d
AY		 639int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
640 int len, bool is_write)
a9bcd1b8
TH		 641{
642 struct kvm_s390_mem_op mem_op = {
643 .gaddr = addr,
644 .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
645 .size = len,
646 .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
647 : KVM_S390_MEMOP_LOGICAL_READ,
648 .buf = (uint64_t)hostbuf,
6cb1e49d 649 .ar = ar,
a9bcd1b8
TH		 650 };
651 int ret;
652
653 if (!cap_mem_op) {
654 return -ENOSYS;
655 }
656 if (!hostbuf) {
657 mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
658 }
659
660 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
661 if (ret < 0) {
662 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret));
663 }
664 return ret;
665}
666
fdec9918
CB		 667/*
668 * Legacy layout for s390:
669 * Older S390 KVM requires the topmost vma of the RAM to be
670 * smaller than an system defined value, which is at least 256GB.
671 * Larger systems have larger values. We put the guest between
672 * the end of data segment (system break) and this value. We
673 * use 32GB as a base to have enough room for the system break
674 * to grow. We also have to use MAP parameters that avoid
675 * read-only mapping of guest pages.
676 */
dc622deb 677static void *legacy_s390_alloc(size_t size, uint64_t *align)
fdec9918
CB		 678{
679 void *mem;
680
681 mem = mmap((void *) 0x800000000ULL, size,
682 PROT_EXEC|PROT_READ|PROT_WRITE,
683 MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
39228250 684 return mem == MAP_FAILED ? NULL : mem;
fdec9918
CB		 685}
686
b60fae32
DH		 687static uint8_t const *sw_bp_inst;
688static uint8_t sw_bp_ilen;
689
690static void determine_sw_breakpoint_instr(void)
691{
692 /* DIAG 501 is used for sw breakpoints with old kernels */
693 static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
694 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
695 static const uint8_t instr_0x0000[] = {0x00, 0x00};
696
697 if (sw_bp_inst) {
698 return;
699 }
700 if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) {
701 sw_bp_inst = diag_501;
702 sw_bp_ilen = sizeof(diag_501);
703 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
704 } else {
705 sw_bp_inst = instr_0x0000;
706 sw_bp_ilen = sizeof(instr_0x0000);
707 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
708 }
709}
8e4e86af 710
20d695a9 711int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
0e60a699 712{
b60fae32 713 determine_sw_breakpoint_instr();
0e60a699 714
8e4e86af 715 if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
b60fae32
DH		 716 sw_bp_ilen, 0) ||
717 cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) {
0e60a699
AG		 718 return -EINVAL;
719 }
720 return 0;
721}
722
20d695a9 723int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
0e60a699 724{
b60fae32 725 uint8_t t[MAX_ILEN];
0e60a699 726
b60fae32 727 if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) {
0e60a699 728 return -EINVAL;
b60fae32 729 } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) {
0e60a699 730 return -EINVAL;
8e4e86af 731 } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
b60fae32 732 sw_bp_ilen, 1)) {
0e60a699
AG		 733 return -EINVAL;
734 }
735
736 return 0;
737}
738
770a6379
DH		 739static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
740 int len, int type)
741{
742 int n;
743
744 for (n = 0; n < nb_hw_breakpoints; n++) {
745 if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
746 (hw_breakpoints[n].len == len || len == -1)) {
747 return &hw_breakpoints[n];
748 }
749 }
750
751 return NULL;
752}
753
754static int insert_hw_breakpoint(target_ulong addr, int len, int type)
755{
756 int size;
757
758 if (find_hw_breakpoint(addr, len, type)) {
759 return -EEXIST;
760 }
761
762 size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
763
764 if (!hw_breakpoints) {
765 nb_hw_breakpoints = 0;
766 hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
767 } else {
768 hw_breakpoints =
769 (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
770 }
771
772 if (!hw_breakpoints) {
773 nb_hw_breakpoints = 0;
774 return -ENOMEM;
775 }
776
777 hw_breakpoints[nb_hw_breakpoints].addr = addr;
778 hw_breakpoints[nb_hw_breakpoints].len = len;
779 hw_breakpoints[nb_hw_breakpoints].type = type;
780
781 nb_hw_breakpoints++;
782
783 return 0;
784}
785
8c012449
DH		 786int kvm_arch_insert_hw_breakpoint(target_ulong addr,
787 target_ulong len, int type)
788{
770a6379
DH		 789 switch (type) {
790 case GDB_BREAKPOINT_HW:
791 type = KVM_HW_BP;
792 break;
793 case GDB_WATCHPOINT_WRITE:
794 if (len < 1) {
795 return -EINVAL;
796 }
797 type = KVM_HW_WP_WRITE;
798 break;
799 default:
800 return -ENOSYS;
801 }
802 return insert_hw_breakpoint(addr, len, type);
8c012449
DH		 803}
804
805int kvm_arch_remove_hw_breakpoint(target_ulong addr,
806 target_ulong len, int type)
807{
770a6379
DH		 808 int size;
809 struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
810
811 if (bp == NULL) {
812 return -ENOENT;
813 }
814
815 nb_hw_breakpoints--;
816 if (nb_hw_breakpoints > 0) {
817 /*
818 * In order to trim the array, move the last element to the position to
819 * be removed - if necessary.
820 */
821 if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
822 *bp = hw_breakpoints[nb_hw_breakpoints];
823 }
824 size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
825 hw_breakpoints =
826 (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
827 } else {
828 g_free(hw_breakpoints);
829 hw_breakpoints = NULL;
830 }
831
832 return 0;
8c012449
DH		 833}
834
835void kvm_arch_remove_all_hw_breakpoints(void)
836{
770a6379
DH		 837 nb_hw_breakpoints = 0;
838 g_free(hw_breakpoints);
839 hw_breakpoints = NULL;
8c012449
DH		 840}
841
842void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
843{
770a6379
DH		 844 int i;
845
846 if (nb_hw_breakpoints > 0) {
847 dbg->arch.nr_hw_bp = nb_hw_breakpoints;
848 dbg->arch.hw_bp = hw_breakpoints;
849
850 for (i = 0; i < nb_hw_breakpoints; ++i) {
851 hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
852 hw_breakpoints[i].addr);
853 }
854 dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
855 } else {
856 dbg->arch.nr_hw_bp = 0;
857 dbg->arch.hw_bp = NULL;
858 }
8c012449
DH		 859}
860
20d695a9 861void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
0e60a699 862{
0e60a699
AG		 863}
864
4c663752 865MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
0e60a699 866{
4c663752 867 return MEMTXATTRS_UNSPECIFIED;
0e60a699
AG		 868}
869
20d695a9 870int kvm_arch_process_async_events(CPUState *cs)
0af691d7 871{
225dc991 872 return cs->halted;
0af691d7
MT		 873}
874
66ad0893
CH		 875static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
876 struct kvm_s390_interrupt *interrupt)
877{
878 int r = 0;
879
880 interrupt->type = irq->type;
881 switch (irq->type) {
882 case KVM_S390_INT_VIRTIO:
883 interrupt->parm = irq->u.ext.ext_params;
884 /* fall through */
885 case KVM_S390_INT_PFAULT_INIT:
886 case KVM_S390_INT_PFAULT_DONE:
887 interrupt->parm64 = irq->u.ext.ext_params2;
888 break;
889 case KVM_S390_PROGRAM_INT:
890 interrupt->parm = irq->u.pgm.code;
891 break;
892 case KVM_S390_SIGP_SET_PREFIX:
893 interrupt->parm = irq->u.prefix.address;
894 break;
895 case KVM_S390_INT_SERVICE:
896 interrupt->parm = irq->u.ext.ext_params;
897 break;
898 case KVM_S390_MCHK:
899 interrupt->parm = irq->u.mchk.cr14;
900 interrupt->parm64 = irq->u.mchk.mcic;
901 break;
902 case KVM_S390_INT_EXTERNAL_CALL:
903 interrupt->parm = irq->u.extcall.code;
904 break;
905 case KVM_S390_INT_EMERGENCY:
906 interrupt->parm = irq->u.emerg.code;
907 break;
908 case KVM_S390_SIGP_STOP:
909 case KVM_S390_RESTART:
910 break; /* These types have no parameters */
911 case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
912 interrupt->parm = irq->u.io.subchannel_id << 16;
913 interrupt->parm |= irq->u.io.subchannel_nr;
914 interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
915 interrupt->parm64 |= irq->u.io.io_int_word;
916 break;
917 default:
918 r = -EINVAL;
919 break;
920 }
921 return r;
922}
923
1191c949 924static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
66ad0893
CH		 925{
926 struct kvm_s390_interrupt kvmint = {};
66ad0893
CH		 927 int r;
928
929 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
930 if (r < 0) {
931 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
932 exit(1);
933 }
934
935 r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
936 if (r < 0) {
937 fprintf(stderr, "KVM failed to inject interrupt\n");
938 exit(1);
939 }
940}
941
1191c949
JF		 942void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
943{
944 CPUState *cs = CPU(cpu);
945 int r;
946
947 if (cap_s390_irq) {
948 r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
949 if (!r) {
950 return;
951 }
952 error_report("KVM failed to inject interrupt %llx", irq->type);
953 exit(1);
954 }
955
956 inject_vcpu_irq_legacy(cs, irq);
957}
958
bbd8bb8e 959static void __kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
66ad0893
CH		 960{
961 struct kvm_s390_interrupt kvmint = {};
962 int r;
963
964 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
965 if (r < 0) {
966 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
967 exit(1);
968 }
969
970 r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
971 if (r < 0) {
972 fprintf(stderr, "KVM failed to inject interrupt\n");
973 exit(1);
974 }
975}
976
bbd8bb8e
CH		 977void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
978{
979 static bool use_flic = true;
980 int r;
981
982 if (use_flic) {
983 r = kvm_s390_inject_flic(irq);
984 if (r == -ENOSYS) {
985 use_flic = false;
986 }
987 if (!r) {
988 return;
989 }
990 }
991 __kvm_s390_floating_interrupt(irq);
992}
993
de13d216 994void kvm_s390_service_interrupt(uint32_t parm)
0e60a699 995{
de13d216
CH		 996 struct kvm_s390_irq irq = {
997 .type = KVM_S390_INT_SERVICE,
998 .u.ext.ext_params = parm,
999 };
0e60a699 1000
de13d216 1001 kvm_s390_floating_interrupt(&irq);
79afc36d
CH		 1002}
1003
1bc22652 1004static void enter_pgmcheck(S390CPU *cpu, uint16_t code)
0e60a699 1005{
de13d216
CH		 1006 struct kvm_s390_irq irq = {
1007 .type = KVM_S390_PROGRAM_INT,
1008 .u.pgm.code = code,
1009 };
1010
1011 kvm_s390_vcpu_interrupt(cpu, &irq);
0e60a699
AG		 1012}
1013
801cdd35
TH		 1014void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
1015{
1016 struct kvm_s390_irq irq = {
1017 .type = KVM_S390_PROGRAM_INT,
1018 .u.pgm.code = code,
1019 .u.pgm.trans_exc_code = te_code,
1020 .u.pgm.exc_access_id = te_code & 3,
1021 };
1022
1023 kvm_s390_vcpu_interrupt(cpu, &irq);
1024}
1025
1bc22652 1026static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
bcec36ea 1027 uint16_t ipbh0)
0e60a699 1028{
1bc22652 1029 CPUS390XState *env = &cpu->env;
a0fa2cb8
TH		 1030 uint64_t sccb;
1031 uint32_t code;
0e60a699
AG		 1032 int r = 0;
1033
cb446eca 1034 cpu_synchronize_state(CPU(cpu));
0e60a699
AG		 1035 sccb = env->regs[ipbh0 & 0xf];
1036 code = env->regs[(ipbh0 & 0xf0) >> 4];
1037
6e252802 1038 r = sclp_service_call(env, sccb, code);
9abf567d 1039 if (r < 0) {
1bc22652 1040 enter_pgmcheck(cpu, -r);
e8803d93
TH		 1041 } else {
1042 setcc(cpu, r);
0e60a699 1043 }
81f7c56c 1044
0e60a699
AG		 1045 return 0;
1046}
1047
1eecf41b 1048static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
09b99878 1049{
09b99878 1050 CPUS390XState *env = &cpu->env;
1eecf41b
FB		 1051 int rc = 0;
1052 uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
3474b679 1053
44c68de0 1054 cpu_synchronize_state(CPU(cpu));
3474b679 1055
09b99878 1056 switch (ipa1) {
1eecf41b 1057 case PRIV_B2_XSCH:
5d9bf1c0 1058 ioinst_handle_xsch(cpu, env->regs[1]);
09b99878 1059 break;
1eecf41b 1060 case PRIV_B2_CSCH:
5d9bf1c0 1061 ioinst_handle_csch(cpu, env->regs[1]);
09b99878 1062 break;
1eecf41b 1063 case PRIV_B2_HSCH:
5d9bf1c0 1064 ioinst_handle_hsch(cpu, env->regs[1]);
09b99878 1065 break;
1eecf41b 1066 case PRIV_B2_MSCH:
5d9bf1c0 1067 ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb);
09b99878 1068 break;
1eecf41b 1069 case PRIV_B2_SSCH:
5d9bf1c0 1070 ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb);
09b99878 1071 break;
1eecf41b 1072 case PRIV_B2_STCRW:
5d9bf1c0 1073 ioinst_handle_stcrw(cpu, run->s390_sieic.ipb);
09b99878 1074 break;
1eecf41b 1075 case PRIV_B2_STSCH:
5d9bf1c0 1076 ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb);
09b99878 1077 break;
1eecf41b 1078 case PRIV_B2_TSCH:
09b99878
CH		 1079 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1080 fprintf(stderr, "Spurious tsch intercept\n");
1081 break;
1eecf41b 1082 case PRIV_B2_CHSC:
5d9bf1c0 1083 ioinst_handle_chsc(cpu, run->s390_sieic.ipb);
09b99878 1084 break;
1eecf41b 1085 case PRIV_B2_TPI:
09b99878
CH		 1086 /* This should have been handled by kvm already. */
1087 fprintf(stderr, "Spurious tpi intercept\n");
1088 break;
1eecf41b 1089 case PRIV_B2_SCHM:
5d9bf1c0
TH		 1090 ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
1091 run->s390_sieic.ipb);
09b99878 1092 break;
1eecf41b 1093 case PRIV_B2_RSCH:
5d9bf1c0 1094 ioinst_handle_rsch(cpu, env->regs[1]);
09b99878 1095 break;
1eecf41b 1096 case PRIV_B2_RCHP:
5d9bf1c0 1097 ioinst_handle_rchp(cpu, env->regs[1]);
09b99878 1098 break;
1eecf41b 1099 case PRIV_B2_STCPS:
09b99878 1100 /* We do not provide this instruction, it is suppressed. */
09b99878 1101 break;
1eecf41b 1102 case PRIV_B2_SAL:
5d9bf1c0 1103 ioinst_handle_sal(cpu, env->regs[1]);
09b99878 1104 break;
1eecf41b 1105 case PRIV_B2_SIGA:
c1e8dfb5 1106 /* Not provided, set CC = 3 for subchannel not operational */
5d9bf1c0 1107 setcc(cpu, 3);
09b99878 1108 break;
1eecf41b
FB		 1109 case PRIV_B2_SCLP_CALL:
1110 rc = kvm_sclp_service_call(cpu, run, ipbh0);
1111 break;
c1e8dfb5 1112 default:
1eecf41b
FB		 1113 rc = -1;
1114 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
1115 break;
09b99878
CH		 1116 }
1117
1eecf41b 1118 return rc;
09b99878
CH		 1119}
1120
6cb1e49d
AY		 1121static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
1122 uint8_t *ar)
863f6f52
FB		 1123{
1124 CPUS390XState *env = &cpu->env;
1125 uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
1126 uint32_t base2 = run->s390_sieic.ipb >> 28;
1127 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1128 ((run->s390_sieic.ipb & 0xff00) << 4);
1129
1130 if (disp2 & 0x80000) {
1131 disp2 += 0xfff00000;
1132 }
6cb1e49d
AY		 1133 if (ar) {
1134 *ar = base2;
1135 }
863f6f52
FB		 1136
1137 return (base2 ? env->regs[base2] : 0) +
1138 (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
1139}
1140
6cb1e49d
AY		 1141static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
1142 uint8_t *ar)
863f6f52
FB		 1143{
1144 CPUS390XState *env = &cpu->env;
1145 uint32_t base2 = run->s390_sieic.ipb >> 28;
1146 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1147 ((run->s390_sieic.ipb & 0xff00) << 4);
1148
1149 if (disp2 & 0x80000) {
1150 disp2 += 0xfff00000;
1151 }
6cb1e49d
AY		 1152 if (ar) {
1153 *ar = base2;
1154 }
863f6f52
FB		 1155
1156 return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
1157}
1158
1159static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
1160{
1161 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1162
1163 return clp_service_call(cpu, r2);
1164}
1165
1166static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
1167{
1168 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1169 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1170
1171 return pcilg_service_call(cpu, r1, r2);
1172}
1173
1174static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
1175{
1176 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1177 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1178
1179 return pcistg_service_call(cpu, r1, r2);
1180}
1181
1182static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1183{
1184 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1185 uint64_t fiba;
6cb1e49d 1186 uint8_t ar;
863f6f52
FB		 1187
1188 cpu_synchronize_state(CPU(cpu));
6cb1e49d 1189 fiba = get_base_disp_rxy(cpu, run, &ar);
863f6f52 1190
6cb1e49d 1191 return stpcifc_service_call(cpu, r1, fiba, ar);
863f6f52
FB		 1192}
1193
1194static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
1195{
1196 /* NOOP */
1197 return 0;
1198}
1199
1200static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
1201{
1202 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1203 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1204
1205 return rpcit_service_call(cpu, r1, r2);
1206}
1207
1208static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
1209{
1210 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1211 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1212 uint64_t gaddr;
6cb1e49d 1213 uint8_t ar;
863f6f52
FB		 1214
1215 cpu_synchronize_state(CPU(cpu));
6cb1e49d 1216 gaddr = get_base_disp_rsy(cpu, run, &ar);
863f6f52 1217
6cb1e49d 1218 return pcistb_service_call(cpu, r1, r3, gaddr, ar);
863f6f52
FB		 1219}
1220
1221static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1222{
1223 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1224 uint64_t fiba;
6cb1e49d 1225 uint8_t ar;
863f6f52
FB		 1226
1227 cpu_synchronize_state(CPU(cpu));
6cb1e49d 1228 fiba = get_base_disp_rxy(cpu, run, &ar);
863f6f52 1229
6cb1e49d 1230 return mpcifc_service_call(cpu, r1, fiba, ar);
863f6f52
FB		 1231}
1232
1eecf41b 1233static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
0e60a699
AG		 1234{
1235 int r = 0;
0e60a699 1236
0e60a699 1237 switch (ipa1) {
863f6f52
FB		 1238 case PRIV_B9_CLP:
1239 r = kvm_clp_service_call(cpu, run);
1240 break;
1241 case PRIV_B9_PCISTG:
1242 r = kvm_pcistg_service_call(cpu, run);
1243 break;
1244 case PRIV_B9_PCILG:
1245 r = kvm_pcilg_service_call(cpu, run);
1246 break;
1247 case PRIV_B9_RPCIT:
1248 r = kvm_rpcit_service_call(cpu, run);
1249 break;
1eecf41b
FB		 1250 case PRIV_B9_EQBS:
1251 /* just inject exception */
1252 r = -1;
1253 break;
1254 default:
1255 r = -1;
1256 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
1257 break;
1258 }
1259
1260 return r;
1261}
1262
80765f07 1263static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1eecf41b
FB		 1264{
1265 int r = 0;
1266
80765f07 1267 switch (ipbl) {
863f6f52
FB		 1268 case PRIV_EB_PCISTB:
1269 r = kvm_pcistb_service_call(cpu, run);
1270 break;
1271 case PRIV_EB_SIC:
1272 r = kvm_sic_service_call(cpu, run);
1273 break;
1eecf41b
FB		 1274 case PRIV_EB_SQBS:
1275 /* just inject exception */
1276 r = -1;
1277 break;
1278 default:
1279 r = -1;
80765f07 1280 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
1eecf41b 1281 break;
0e60a699
AG		 1282 }
1283
1284 return r;
1285}
1286
863f6f52
FB		 1287static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1288{
1289 int r = 0;
1290
1291 switch (ipbl) {
1292 case PRIV_E3_MPCIFC:
1293 r = kvm_mpcifc_service_call(cpu, run);
1294 break;
1295 case PRIV_E3_STPCIFC:
1296 r = kvm_stpcifc_service_call(cpu, run);
1297 break;
1298 default:
1299 r = -1;
1300 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
1301 break;
1302 }
1303
1304 return r;
1305}
1306
4fd6dd06 1307static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
0e60a699 1308{
4fd6dd06 1309 CPUS390XState *env = &cpu->env;
77319f22 1310 int ret;
3474b679 1311
44c68de0 1312 cpu_synchronize_state(CPU(cpu));
77319f22
TH		 1313 ret = s390_virtio_hypercall(env);
1314 if (ret == -EINVAL) {
1315 enter_pgmcheck(cpu, PGM_SPECIFICATION);
1316 return 0;
1317 }
0e60a699 1318
77319f22 1319 return ret;
0e60a699
AG		 1320}
1321
8fc639af
XW		 1322static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
1323{
1324 uint64_t r1, r3;
1325 int rc;
1326
1327 cpu_synchronize_state(CPU(cpu));
1328 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1329 r3 = run->s390_sieic.ipa & 0x000f;
1330 rc = handle_diag_288(&cpu->env, r1, r3);
1331 if (rc) {
1332 enter_pgmcheck(cpu, PGM_SPECIFICATION);
1333 }
1334}
1335
268846ba
ED		 1336static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
1337{
1338 uint64_t r1, r3;
1339
1340 cpu_synchronize_state(CPU(cpu));
20dd25bb 1341 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
268846ba
ED		 1342 r3 = run->s390_sieic.ipa & 0x000f;
1343 handle_diag_308(&cpu->env, r1, r3);
1344}
1345
b30f4dfb
DH		 1346static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
1347{
1348 CPUS390XState *env = &cpu->env;
1349 unsigned long pc;
1350
1351 cpu_synchronize_state(CPU(cpu));
1352
b60fae32 1353 pc = env->psw.addr - sw_bp_ilen;
b30f4dfb
DH		 1354 if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
1355 env->psw.addr = pc;
1356 return EXCP_DEBUG;
1357 }
1358
1359 return -ENOENT;
1360}
1361
638129ff
CH		 1362#define DIAG_KVM_CODE_MASK 0x000000000000ffff
1363
1364static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
0e60a699
AG		 1365{
1366 int r = 0;
638129ff
CH		 1367 uint16_t func_code;
1368
1369 /*
1370 * For any diagnose call we support, bits 48-63 of the resulting
1371 * address specify the function code; the remainder is ignored.
1372 */
6cb1e49d 1373 func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
638129ff 1374 switch (func_code) {
8fc639af
XW		 1375 case DIAG_TIMEREVENT:
1376 kvm_handle_diag_288(cpu, run);
1377 break;
268846ba
ED		 1378 case DIAG_IPL:
1379 kvm_handle_diag_308(cpu, run);
1380 break;
39fbc5c6
CB		 1381 case DIAG_KVM_HYPERCALL:
1382 r = handle_hypercall(cpu, run);
1383 break;
1384 case DIAG_KVM_BREAKPOINT:
b30f4dfb 1385 r = handle_sw_breakpoint(cpu, run);
39fbc5c6
CB		 1386 break;
1387 default:
638129ff 1388 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
68540b1a 1389 enter_pgmcheck(cpu, PGM_SPECIFICATION);
39fbc5c6 1390 break;
0e60a699
AG		 1391 }
1392
1393 return r;
1394}
1395
6eb8f212 1396typedef struct SigpInfo {
22740e3f 1397 uint64_t param;
6eb8f212
DH		 1398 int cc;
1399 uint64_t *status_reg;
1400} SigpInfo;
1401
36b5c845 1402static void set_sigp_status(SigpInfo *si, uint64_t status)
b20a461f 1403{
36b5c845
DH		 1404 *si->status_reg &= 0xffffffff00000000ULL;
1405 *si->status_reg |= status;
1406 si->cc = SIGP_CC_STATUS_STORED;
1407}
6e6ad8db 1408
0ea3eb65 1409static void sigp_start(CPUState *cs, run_on_cpu_data arg)
b20a461f 1410{
e0eeb4a2 1411 S390CPU *cpu = S390_CPU(cs);
0ea3eb65 1412 SigpInfo *si = arg.host_ptr;
6e6ad8db 1413
e0eeb4a2 1414 if (s390_cpu_get_state(cpu) != CPU_STATE_STOPPED) {
4f2b55d1
DH		 1415 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1416 return;
1417 }
1418
e0eeb4a2 1419 s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
6eb8f212 1420 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
b20a461f
TH		 1421}
1422
0ea3eb65 1423static void sigp_stop(CPUState *cs, run_on_cpu_data arg)
0e60a699 1424{
e0eeb4a2 1425 S390CPU *cpu = S390_CPU(cs);
0ea3eb65 1426 SigpInfo *si = arg.host_ptr;
18ff9494
DH		 1427 struct kvm_s390_irq irq = {
1428 .type = KVM_S390_SIGP_STOP,
1429 };
1430
e0eeb4a2 1431 if (s390_cpu_get_state(cpu) != CPU_STATE_OPERATING) {
18ff9494
DH		 1432 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1433 return;
1434 }
1435
1436 /* disabled wait - sleeping in user space */
e0eeb4a2
AB		 1437 if (cs->halted) {
1438 s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
18ff9494
DH		 1439 } else {
1440 /* execute the stop function */
e0eeb4a2
AB		 1441 cpu->env.sigp_order = SIGP_STOP;
1442 kvm_s390_vcpu_interrupt(cpu, &irq);
18ff9494
DH		 1443 }
1444 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1445}
1446
abec5356
EF		 1447#define ADTL_SAVE_AREA_SIZE 1024
1448static int kvm_s390_store_adtl_status(S390CPU *cpu, hwaddr addr)
1449{
1450 void *mem;
1451 hwaddr len = ADTL_SAVE_AREA_SIZE;
1452
1453 mem = cpu_physical_memory_map(addr, &len, 1);
1454 if (!mem) {
1455 return -EFAULT;
1456 }
1457 if (len != ADTL_SAVE_AREA_SIZE) {
1458 cpu_physical_memory_unmap(mem, len, 1, 0);
1459 return -EFAULT;
1460 }
1461
1462 memcpy(mem, &cpu->env.vregs, 512);
1463
1464 cpu_physical_memory_unmap(mem, len, 1, len);
1465
1466 return 0;
1467}
1468
18ff9494
DH		 1469#define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1470#define SAVE_AREA_SIZE 512
1471static int kvm_s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
1472{
1473 static const uint8_t ar_id = 1;
1474 uint64_t ckc = cpu->env.ckc >> 8;
1475 void *mem;
c498d8e3 1476 int i;
18ff9494
DH		 1477 hwaddr len = SAVE_AREA_SIZE;
1478
1479 mem = cpu_physical_memory_map(addr, &len, 1);
1480 if (!mem) {
1481 return -EFAULT;
1482 }
1483 if (len != SAVE_AREA_SIZE) {
1484 cpu_physical_memory_unmap(mem, len, 1, 0);
1485 return -EFAULT;
1486 }
1487
1488 if (store_arch) {
1489 cpu_physical_memory_write(offsetof(LowCore, ar_access_id), &ar_id, 1);
1490 }
c498d8e3 1491 for (i = 0; i < 16; ++i) {
182f42fd 1492 *((uint64_t *)mem + i) = get_freg(&cpu->env, i)->ll;
c498d8e3 1493 }
18ff9494
DH		 1494 memcpy(mem + 128, &cpu->env.regs, 128);
1495 memcpy(mem + 256, &cpu->env.psw, 16);
1496 memcpy(mem + 280, &cpu->env.psa, 4);
1497 memcpy(mem + 284, &cpu->env.fpc, 4);
1498 memcpy(mem + 292, &cpu->env.todpr, 4);
1499 memcpy(mem + 296, &cpu->env.cputm, 8);
1500 memcpy(mem + 304, &ckc, 8);
1501 memcpy(mem + 320, &cpu->env.aregs, 64);
1502 memcpy(mem + 384, &cpu->env.cregs, 128);
1503
1504 cpu_physical_memory_unmap(mem, len, 1, len);
1505
1506 return 0;
1507}
1508
0ea3eb65 1509static void sigp_stop_and_store_status(CPUState *cs, run_on_cpu_data arg)
18ff9494 1510{
e0eeb4a2 1511 S390CPU *cpu = S390_CPU(cs);
0ea3eb65 1512 SigpInfo *si = arg.host_ptr;
18ff9494
DH		 1513 struct kvm_s390_irq irq = {
1514 .type = KVM_S390_SIGP_STOP,
1515 };
1516
1517 /* disabled wait - sleeping in user space */
e0eeb4a2
AB		 1518 if (s390_cpu_get_state(cpu) == CPU_STATE_OPERATING && cs->halted) {
1519 s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
18ff9494
DH		 1520 }
1521
e0eeb4a2 1522 switch (s390_cpu_get_state(cpu)) {
18ff9494 1523 case CPU_STATE_OPERATING:
e0eeb4a2
AB		 1524 cpu->env.sigp_order = SIGP_STOP_STORE_STATUS;
1525 kvm_s390_vcpu_interrupt(cpu, &irq);
18ff9494
DH		 1526 /* store will be performed when handling the stop intercept */
1527 break;
1528 case CPU_STATE_STOPPED:
1529 /* already stopped, just store the status */
e0eeb4a2
AB		 1530 cpu_synchronize_state(cs);
1531 kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR, true);
18ff9494
DH		 1532 break;
1533 }
1534 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1535}
1536
0ea3eb65 1537static void sigp_store_status_at_address(CPUState *cs, run_on_cpu_data arg)
18ff9494 1538{
e0eeb4a2 1539 S390CPU *cpu = S390_CPU(cs);
0ea3eb65 1540 SigpInfo *si = arg.host_ptr;
18ff9494
DH		 1541 uint32_t address = si->param & 0x7ffffe00u;
1542
1543 /* cpu has to be stopped */
e0eeb4a2 1544 if (s390_cpu_get_state(cpu) != CPU_STATE_STOPPED) {
18ff9494
DH		 1545 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1546 return;
1547 }
1548
e0eeb4a2 1549 cpu_synchronize_state(cs);
18ff9494 1550
e0eeb4a2 1551 if (kvm_s390_store_status(cpu, address, false)) {
18ff9494
DH		 1552 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1553 return;
1554 }
1555 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1556}
1557
0ea3eb65 1558static void sigp_store_adtl_status(CPUState *cs, run_on_cpu_data arg)
abec5356 1559{
e0eeb4a2 1560 S390CPU *cpu = S390_CPU(cs);
0ea3eb65 1561 SigpInfo *si = arg.host_ptr;
abec5356 1562
7c72ac49 1563 if (!s390_has_feat(S390_FEAT_VECTOR)) {
abec5356
EF		 1564 set_sigp_status(si, SIGP_STAT_INVALID_ORDER);
1565 return;
1566 }
1567
1568 /* cpu has to be stopped */
e0eeb4a2 1569 if (s390_cpu_get_state(cpu) != CPU_STATE_STOPPED) {
abec5356
EF		 1570 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1571 return;
1572 }
1573
1574 /* parameter must be aligned to 1024-byte boundary */
1575 if (si->param & 0x3ff) {
1576 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1577 return;
1578 }
1579
e0eeb4a2 1580 cpu_synchronize_state(cs);
abec5356 1581
e0eeb4a2 1582 if (kvm_s390_store_adtl_status(cpu, si->param)) {
abec5356
EF		 1583 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1584 return;
1585 }
1586 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1587}
1588
0ea3eb65 1589static void sigp_restart(CPUState *cs, run_on_cpu_data arg)
0e60a699 1590{
e0eeb4a2 1591 S390CPU *cpu = S390_CPU(cs);
0ea3eb65 1592 SigpInfo *si = arg.host_ptr;
de13d216
CH		 1593 struct kvm_s390_irq irq = {
1594 .type = KVM_S390_RESTART,
1595 };
1596
e0eeb4a2 1597 switch (s390_cpu_get_state(cpu)) {
e3b7b578
DH		 1598 case CPU_STATE_STOPPED:
1599 /* the restart irq has to be delivered prior to any other pending irq */
e0eeb4a2
AB		 1600 cpu_synchronize_state(cs);
1601 do_restart_interrupt(&cpu->env);
1602 s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
e3b7b578
DH		 1603 break;
1604 case CPU_STATE_OPERATING:
e0eeb4a2 1605 kvm_s390_vcpu_interrupt(cpu, &irq);
e3b7b578
DH		 1606 break;
1607 }
6eb8f212 1608 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
6e6ad8db
DH		 1609}
1610
1611int kvm_s390_cpu_restart(S390CPU *cpu)
1612{
e0eeb4a2 1613 SigpInfo si = {};
6eb8f212 1614
14e6fe12 1615 run_on_cpu(CPU(cpu), sigp_restart, RUN_ON_CPU_HOST_PTR(&si));
7f7f9752 1616 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu->env);
0e60a699
AG		 1617 return 0;
1618}
1619
0ea3eb65 1620static void sigp_initial_cpu_reset(CPUState *cs, run_on_cpu_data arg)
0e60a699 1621{
e0eeb4a2
AB		 1622 S390CPU *cpu = S390_CPU(cs);
1623 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
0ea3eb65 1624 SigpInfo *si = arg.host_ptr;
d5900813 1625
6eb8f212
DH		 1626 cpu_synchronize_state(cs);
1627 scc->initial_cpu_reset(cs);
1628 cpu_synchronize_post_reset(cs);
1629 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
0e60a699
AG		 1630}
1631
0ea3eb65 1632static void sigp_cpu_reset(CPUState *cs, run_on_cpu_data arg)
04c2b516 1633{
e0eeb4a2
AB		 1634 S390CPU *cpu = S390_CPU(cs);
1635 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
0ea3eb65 1636 SigpInfo *si = arg.host_ptr;
04c2b516 1637
6eb8f212
DH		 1638 cpu_synchronize_state(cs);
1639 scc->cpu_reset(cs);
1640 cpu_synchronize_post_reset(cs);
1641 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
04c2b516
TH		 1642}
1643
0ea3eb65 1644static void sigp_set_prefix(CPUState *cs, run_on_cpu_data arg)
0e60a699 1645{
e0eeb4a2 1646 S390CPU *cpu = S390_CPU(cs);
0ea3eb65 1647 SigpInfo *si = arg.host_ptr;
18ff9494 1648 uint32_t addr = si->param & 0x7fffe000u;
0e60a699 1649
e0eeb4a2 1650 cpu_synchronize_state(cs);
0e60a699 1651
18ff9494
DH		 1652 if (!address_space_access_valid(&address_space_memory, addr,
1653 sizeof(struct LowCore), false)) {
1654 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1655 return;
1656 }
0e60a699 1657
18ff9494 1658 /* cpu has to be stopped */
e0eeb4a2 1659 if (s390_cpu_get_state(cpu) != CPU_STATE_STOPPED) {
18ff9494
DH		 1660 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1661 return;
0e60a699
AG		 1662 }
1663
e0eeb4a2
AB		 1664 cpu->env.psa = addr;
1665 cpu_synchronize_post_init(cs);
18ff9494
DH		 1666 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1667}
1668
6eb8f212 1669static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order,
22740e3f 1670 uint64_t param, uint64_t *status_reg)
6eb8f212
DH		 1671{
1672 SigpInfo si = {
22740e3f 1673 .param = param,
6eb8f212
DH		 1674 .status_reg = status_reg,
1675 };
1676
1677 /* cpu available? */
1678 if (dst_cpu == NULL) {
1679 return SIGP_CC_NOT_OPERATIONAL;
1680 }
1681
18ff9494
DH		 1682 /* only resets can break pending orders */
1683 if (dst_cpu->env.sigp_order != 0 &&
1684 order != SIGP_CPU_RESET &&
1685 order != SIGP_INITIAL_CPU_RESET) {
1686 return SIGP_CC_BUSY;
1687 }
1688
6eb8f212 1689 switch (order) {
b20a461f 1690 case SIGP_START:
14e6fe12 1691 run_on_cpu(CPU(dst_cpu), sigp_start, RUN_ON_CPU_HOST_PTR(&si));
6eb8f212 1692 break;
18ff9494 1693 case SIGP_STOP:
14e6fe12 1694 run_on_cpu(CPU(dst_cpu), sigp_stop, RUN_ON_CPU_HOST_PTR(&si));
b20a461f 1695 break;
0b9972a2 1696 case SIGP_RESTART:
14e6fe12 1697 run_on_cpu(CPU(dst_cpu), sigp_restart, RUN_ON_CPU_HOST_PTR(&si));
0b9972a2 1698 break;
18ff9494 1699 case SIGP_STOP_STORE_STATUS:
14e6fe12 1700 run_on_cpu(CPU(dst_cpu), sigp_stop_and_store_status, RUN_ON_CPU_HOST_PTR(&si));
18ff9494
DH		 1701 break;
1702 case SIGP_STORE_STATUS_ADDR:
14e6fe12 1703 run_on_cpu(CPU(dst_cpu), sigp_store_status_at_address, RUN_ON_CPU_HOST_PTR(&si));
18ff9494 1704 break;
abec5356 1705 case SIGP_STORE_ADTL_STATUS:
14e6fe12 1706 run_on_cpu(CPU(dst_cpu), sigp_store_adtl_status, RUN_ON_CPU_HOST_PTR(&si));
abec5356 1707 break;
18ff9494 1708 case SIGP_SET_PREFIX:
14e6fe12 1709 run_on_cpu(CPU(dst_cpu), sigp_set_prefix, RUN_ON_CPU_HOST_PTR(&si));
0788082a 1710 break;
0b9972a2 1711 case SIGP_INITIAL_CPU_RESET:
14e6fe12 1712 run_on_cpu(CPU(dst_cpu), sigp_initial_cpu_reset, RUN_ON_CPU_HOST_PTR(&si));
0b9972a2 1713 break;
04c2b516 1714 case SIGP_CPU_RESET:
14e6fe12 1715 run_on_cpu(CPU(dst_cpu), sigp_cpu_reset, RUN_ON_CPU_HOST_PTR(&si));
04c2b516 1716 break;
0b9972a2 1717 default:
6eb8f212 1718 DPRINTF("KVM: unknown SIGP: 0x%x\n", order);
36b5c845 1719 set_sigp_status(&si, SIGP_STAT_INVALID_ORDER);
6eb8f212 1720 }
04c2b516 1721
6eb8f212 1722 return si.cc;
04c2b516
TH		 1723}
1724
18ff9494
DH		 1725static int sigp_set_architecture(S390CPU *cpu, uint32_t param,
1726 uint64_t *status_reg)
1727{
1728 CPUState *cur_cs;
1729 S390CPU *cur_cpu;
1730
1731 /* due to the BQL, we are the only active cpu */
1732 CPU_FOREACH(cur_cs) {
1733 cur_cpu = S390_CPU(cur_cs);
1734 if (cur_cpu->env.sigp_order != 0) {
1735 return SIGP_CC_BUSY;
1736 }
1737 cpu_synchronize_state(cur_cs);
1738 /* all but the current one have to be stopped */
1739 if (cur_cpu != cpu &&
1740 s390_cpu_get_state(cur_cpu) != CPU_STATE_STOPPED) {
1741 *status_reg &= 0xffffffff00000000ULL;
1742 *status_reg |= SIGP_STAT_INCORRECT_STATE;
1743 return SIGP_CC_STATUS_STORED;
1744 }
1745 }
1746
1747 switch (param & 0xff) {
1748 case SIGP_MODE_ESA_S390:
1749 /* not supported */
1750 return SIGP_CC_NOT_OPERATIONAL;
1751 case SIGP_MODE_Z_ARCH_TRANS_ALL_PSW:
1752 case SIGP_MODE_Z_ARCH_TRANS_CUR_PSW:
1753 CPU_FOREACH(cur_cs) {
1754 cur_cpu = S390_CPU(cur_cs);
1755 cur_cpu->env.pfault_token = -1UL;
1756 }
0b9972a2 1757 break;
18ff9494
DH		 1758 default:
1759 *status_reg &= 0xffffffff00000000ULL;
1760 *status_reg |= SIGP_STAT_INVALID_PARAMETER;
1761 return SIGP_CC_STATUS_STORED;
0e60a699
AG		 1762 }
1763
18ff9494
DH		 1764 return SIGP_CC_ORDER_CODE_ACCEPTED;
1765}
1766
f7575c96 1767static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
0e60a699 1768{
f7575c96 1769 CPUS390XState *env = &cpu->env;
6eb8f212
DH		 1770 const uint8_t r1 = ipa1 >> 4;
1771 const uint8_t r3 = ipa1 & 0x0f;
1772 int ret;
1773 uint8_t order;
1774 uint64_t *status_reg;
22740e3f 1775 uint64_t param;
6eb8f212 1776 S390CPU *dst_cpu = NULL;
0e60a699 1777
cb446eca 1778 cpu_synchronize_state(CPU(cpu));
0e60a699
AG		 1779
1780 /* get order code */
6cb1e49d
AY		 1781 order = decode_basedisp_rs(env, run->s390_sieic.ipb, NULL)
1782 & SIGP_ORDER_MASK;
6eb8f212 1783 status_reg = &env->regs[r1];
22740e3f 1784 param = (r1 % 2) ? env->regs[r1] : env->regs[r1 + 1];
0e60a699 1785
f9530c32
CB		 1786 if (qemu_mutex_trylock(&qemu_sigp_mutex)) {
1787 ret = SIGP_CC_BUSY;
1788 goto out;
1789 }
1790
6eb8f212 1791 switch (order) {
0b9972a2 1792 case SIGP_SET_ARCH:
18ff9494 1793 ret = sigp_set_architecture(cpu, param, status_reg);
04c2b516 1794 break;
0b9972a2 1795 default:
6eb8f212
DH		 1796 /* all other sigp orders target a single vcpu */
1797 dst_cpu = s390_cpu_addr2state(env->regs[r3]);
22740e3f 1798 ret = handle_sigp_single_dst(dst_cpu, order, param, status_reg);
0e60a699 1799 }
f9530c32 1800 qemu_mutex_unlock(&qemu_sigp_mutex);
0e60a699 1801
f9530c32 1802out:
56dba22b
DH		 1803 trace_kvm_sigp_finished(order, CPU(cpu)->cpu_index,
1804 dst_cpu ? CPU(dst_cpu)->cpu_index : -1, ret);
1805
6eb8f212
DH		 1806 if (ret >= 0) {
1807 setcc(cpu, ret);
1808 return 0;
1809 }
1810
1811 return ret;
0e60a699
AG		 1812}
1813
b30f4dfb 1814static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
0e60a699
AG		 1815{
1816 unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
1817 uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
d7963c43 1818 int r = -1;
0e60a699 1819
e67137c6
PM		 1820 DPRINTF("handle_instruction 0x%x 0x%x\n",
1821 run->s390_sieic.ipa, run->s390_sieic.ipb);
0e60a699 1822 switch (ipa0) {
09b99878 1823 case IPA0_B2:
1eecf41b
FB		 1824 r = handle_b2(cpu, run, ipa1);
1825 break;
09b99878 1826 case IPA0_B9:
1eecf41b
FB		 1827 r = handle_b9(cpu, run, ipa1);
1828 break;
09b99878 1829 case IPA0_EB:
80765f07 1830 r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
09b99878 1831 break;
863f6f52
FB		 1832 case IPA0_E3:
1833 r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
1834 break;
09b99878 1835 case IPA0_DIAG:
638129ff 1836 r = handle_diag(cpu, run, run->s390_sieic.ipb);
09b99878
CH		 1837 break;
1838 case IPA0_SIGP:
1839 r = handle_sigp(cpu, run, ipa1);
1840 break;
0e60a699
AG		 1841 }
1842
1843 if (r < 0) {
b30f4dfb 1844 r = 0;
1bc22652 1845 enter_pgmcheck(cpu, 0x0001);
0e60a699 1846 }
b30f4dfb
DH		 1847
1848 return r;
0e60a699
AG		 1849}
1850
f7575c96 1851static bool is_special_wait_psw(CPUState *cs)
eca3ed03
CB		 1852{
1853 /* signal quiesce */
f7575c96 1854 return cs->kvm_run->psw_addr == 0xfffUL;
eca3ed03
CB		 1855}
1856
a2689242
TH		 1857static void unmanageable_intercept(S390CPU *cpu, const char *str, int pswoffset)
1858{
1859 CPUState *cs = CPU(cpu);
1860
1861 error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1862 str, cs->cpu_index, ldq_phys(cs->as, cpu->env.psa + pswoffset),
1863 ldq_phys(cs->as, cpu->env.psa + pswoffset + 8));
eb24f7c6 1864 s390_cpu_halt(cpu);
c86f106b 1865 qemu_system_guest_panicked(NULL);
a2689242
TH		 1866}
1867
409422cd
CB		 1868/* try to detect pgm check loops */
1869static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
1870{
1871 CPUState *cs = CPU(cpu);
1872 PSW oldpsw, newpsw;
1873
1874 cpu_synchronize_state(cs);
1875 newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
1876 offsetof(LowCore, program_new_psw));
1877 newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
1878 offsetof(LowCore, program_new_psw) + 8);
1879 oldpsw.mask = run->psw_mask;
1880 oldpsw.addr = run->psw_addr;
1881 /*
1882 * Avoid endless loops of operation exceptions, if the pgm new
1883 * PSW will cause a new operation exception.
1884 * The heuristic checks if the pgm new psw is within 6 bytes before
1885 * the faulting psw address (with same DAT, AS settings) and the
1886 * new psw is not a wait psw and the fault was not triggered by
1887 * problem state. In that case go into crashed state.
1888 */
1889
1890 if (oldpsw.addr - newpsw.addr <= 6 &&
1891 !(newpsw.mask & PSW_MASK_WAIT) &&
1892 !(oldpsw.mask & PSW_MASK_PSTATE) &&
1893 (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&
1894 (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) {
1895 unmanageable_intercept(cpu, "operation exception loop",
1896 offsetof(LowCore, program_new_psw));
1897 return EXCP_HALTED;
1898 }
1899 return 0;
1900}
1901
1bc22652 1902static int handle_intercept(S390CPU *cpu)
0e60a699 1903{
f7575c96
AF		 1904 CPUState *cs = CPU(cpu);
1905 struct kvm_run *run = cs->kvm_run;
0e60a699
AG		 1906 int icpt_code = run->s390_sieic.icptcode;
1907 int r = 0;
1908
e67137c6 1909 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code,
f7575c96 1910 (long)cs->kvm_run->psw_addr);
0e60a699
AG		 1911 switch (icpt_code) {
1912 case ICPT_INSTRUCTION:
b30f4dfb 1913 r = handle_instruction(cpu, run);
0e60a699 1914 break;
6449a41a
TH		 1915 case ICPT_PROGRAM:
1916 unmanageable_intercept(cpu, "program interrupt",
1917 offsetof(LowCore, program_new_psw));
1918 r = EXCP_HALTED;
1919 break;
a2689242
TH		 1920 case ICPT_EXT_INT:
1921 unmanageable_intercept(cpu, "external interrupt",
1922 offsetof(LowCore, external_new_psw));
1923 r = EXCP_HALTED;
1924 break;
0e60a699 1925 case ICPT_WAITPSW:
08eb8c85 1926 /* disabled wait, since enabled wait is handled in kernel */
eb24f7c6
DH		 1927 cpu_synchronize_state(cs);
1928 if (s390_cpu_halt(cpu) == 0) {
08eb8c85 1929 if (is_special_wait_psw(cs)) {
cf83f140 1930 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
08eb8c85 1931 } else {
c86f106b 1932 qemu_system_guest_panicked(NULL);
08eb8c85 1933 }
eca3ed03
CB		 1934 }
1935 r = EXCP_HALTED;
1936 break;
854e42f3 1937 case ICPT_CPU_STOP:
eb24f7c6 1938 if (s390_cpu_set_state(CPU_STATE_STOPPED, cpu) == 0) {
cf83f140 1939 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
854e42f3 1940 }
18ff9494
DH		 1941 if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
1942 kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR,
1943 true);
1944 }
1945 cpu->env.sigp_order = 0;
854e42f3 1946 r = EXCP_HALTED;
0e60a699 1947 break;
b60fae32 1948 case ICPT_OPEREXC:
409422cd 1949 /* check for break points */
b60fae32
DH		 1950 r = handle_sw_breakpoint(cpu, run);
1951 if (r == -ENOENT) {
409422cd
CB		 1952 /* Then check for potential pgm check loops */
1953 r = handle_oper_loop(cpu, run);
1954 if (r == 0) {
1955 enter_pgmcheck(cpu, PGM_OPERATION);
1956 }
b60fae32
DH		 1957 }
1958 break;
0e60a699
AG		 1959 case ICPT_SOFT_INTERCEPT:
1960 fprintf(stderr, "KVM unimplemented icpt SOFT\n");
1961 exit(1);
1962 break;
0e60a699
AG		 1963 case ICPT_IO:
1964 fprintf(stderr, "KVM unimplemented icpt IO\n");
1965 exit(1);
1966 break;
1967 default:
1968 fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
1969 exit(1);
1970 break;
1971 }
1972
1973 return r;
1974}
1975
09b99878
CH		 1976static int handle_tsch(S390CPU *cpu)
1977{
09b99878
CH		 1978 CPUState *cs = CPU(cpu);
1979 struct kvm_run *run = cs->kvm_run;
1980 int ret;
1981
44c68de0 1982 cpu_synchronize_state(cs);
3474b679 1983
653b0809
TH		 1984 ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb);
1985 if (ret < 0) {
09b99878
CH		 1986 /*
1987 * Failure.
1988 * If an I/O interrupt had been dequeued, we have to reinject it.
1989 */
1990 if (run->s390_tsch.dequeued) {
de13d216
CH		 1991 kvm_s390_io_interrupt(run->s390_tsch.subchannel_id,
1992 run->s390_tsch.subchannel_nr,
1993 run->s390_tsch.io_int_parm,
1994 run->s390_tsch.io_int_word);
09b99878
CH		 1995 }
1996 ret = 0;
1997 }
1998 return ret;
1999}
2000
6cb1e49d 2001static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
f07177a5
ET		 2002{
2003 struct sysib_322 sysib;
2004 int del;
2005
6cb1e49d 2006 if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
f07177a5
ET		 2007 return;
2008 }
2009 /* Shift the stack of Extended Names to prepare for our own data */
2010 memmove(&sysib.ext_names[1], &sysib.ext_names[0],
2011 sizeof(sysib.ext_names[0]) * (sysib.count - 1));
2012 /* First virt level, that doesn't provide Ext Names delimits stack. It is
2013 * assumed it's not capable of managing Extended Names for lower levels.
2014 */
2015 for (del = 1; del < sysib.count; del++) {
2016 if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
2017 break;
2018 }
2019 }
2020 if (del < sysib.count) {
2021 memset(sysib.ext_names[del], 0,
2022 sizeof(sysib.ext_names[0]) * (sysib.count - del));
2023 }
2024 /* Insert short machine name in EBCDIC, padded with blanks */
2025 if (qemu_name) {
2026 memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
2027 ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
2028 strlen(qemu_name)));
2029 }
2030 sysib.vm[0].ext_name_encoding = 2; /* 2 = UTF-8 */
2031 memset(sysib.ext_names[0], 0, sizeof(sysib.ext_names[0]));
2032 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
2033 * considered by s390 as not capable of providing any Extended Name.
2034 * Therefore if no name was specified on qemu invocation, we go with the
2035 * same "KVMguest" default, which KVM has filled into short name field.
2036 */
2037 if (qemu_name) {
2038 strncpy((char *)sysib.ext_names[0], qemu_name,
2039 sizeof(sysib.ext_names[0]));
2040 } else {
2041 strcpy((char *)sysib.ext_names[0], "KVMguest");
2042 }
2043 /* Insert UUID */
794afd70 2044 memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid));
f07177a5 2045
6cb1e49d 2046 s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
f07177a5
ET		 2047}
2048
2049static int handle_stsi(S390CPU *cpu)
2050{
2051 CPUState *cs = CPU(cpu);
2052 struct kvm_run *run = cs->kvm_run;
2053
2054 switch (run->s390_stsi.fc) {
2055 case 3:
2056 if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
2057 return 0;
2058 }
2059 /* Only sysib 3.2.2 needs post-handling for now. */
6cb1e49d 2060 insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
f07177a5
ET		 2061 return 0;
2062 default:
2063 return 0;
2064 }
2065}
2066
8c012449
DH		 2067static int kvm_arch_handle_debug_exit(S390CPU *cpu)
2068{
770a6379
DH		 2069 CPUState *cs = CPU(cpu);
2070 struct kvm_run *run = cs->kvm_run;
2071
2072 int ret = 0;
2073 struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
2074
2075 switch (arch_info->type) {
2076 case KVM_HW_WP_WRITE:
2077 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
2078 cs->watchpoint_hit = &hw_watchpoint;
2079 hw_watchpoint.vaddr = arch_info->addr;
2080 hw_watchpoint.flags = BP_MEM_WRITE;
2081 ret = EXCP_DEBUG;
2082 }
2083 break;
2084 case KVM_HW_BP:
2085 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
2086 ret = EXCP_DEBUG;
2087 }
2088 break;
2089 case KVM_SINGLESTEP:
2090 if (cs->singlestep_enabled) {
2091 ret = EXCP_DEBUG;
2092 }
2093 break;
2094 default:
2095 ret = -ENOSYS;
2096 }
2097
2098 return ret;
8c012449
DH		 2099}
2100
20d695a9 2101int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
0e60a699 2102{
20d695a9 2103 S390CPU *cpu = S390_CPU(cs);
0e60a699
AG		 2104 int ret = 0;
2105
4b8523ee
JK		 2106 qemu_mutex_lock_iothread();
2107
0e60a699
AG		 2108 switch (run->exit_reason) {
2109 case KVM_EXIT_S390_SIEIC:
1bc22652 2110 ret = handle_intercept(cpu);
0e60a699
AG		 2111 break;
2112 case KVM_EXIT_S390_RESET:
e91e972c 2113 s390_reipl_request();
0e60a699 2114 break;
09b99878
CH		 2115 case KVM_EXIT_S390_TSCH:
2116 ret = handle_tsch(cpu);
2117 break;
f07177a5
ET		 2118 case KVM_EXIT_S390_STSI:
2119 ret = handle_stsi(cpu);
2120 break;
8c012449
DH		 2121 case KVM_EXIT_DEBUG:
2122 ret = kvm_arch_handle_debug_exit(cpu);
2123 break;
0e60a699
AG		 2124 default:
2125 fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
2126 break;
2127 }
4b8523ee 2128 qemu_mutex_unlock_iothread();
0e60a699 2129
bb4ea393
JK		 2130 if (ret == 0) {
2131 ret = EXCP_INTERRUPT;
bb4ea393 2132 }
0e60a699
AG		 2133 return ret;
2134}
4513d923 2135
20d695a9 2136bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
4513d923
GN		 2137{
2138 return true;
2139}
a1b87fe0 2140
de13d216 2141void kvm_s390_io_interrupt(uint16_t subchannel_id,
09b99878
CH		 2142 uint16_t subchannel_nr, uint32_t io_int_parm,
2143 uint32_t io_int_word)
2144{
de13d216
CH		 2145 struct kvm_s390_irq irq = {
2146 .u.io.subchannel_id = subchannel_id,
2147 .u.io.subchannel_nr = subchannel_nr,
2148 .u.io.io_int_parm = io_int_parm,
2149 .u.io.io_int_word = io_int_word,
2150 };
09b99878 2151
7e749462 2152 if (io_int_word & IO_INT_WORD_AI) {
de13d216 2153 irq.type = KVM_S390_INT_IO(1, 0, 0, 0);
7e749462 2154 } else {
393ad2a4
CB		 2155 irq.type = KVM_S390_INT_IO(0, (subchannel_id & 0xff00) >> 8,
2156 (subchannel_id & 0x0006),
2157 subchannel_nr);
7e749462 2158 }
de13d216 2159 kvm_s390_floating_interrupt(&irq);
09b99878
CH		 2160}
2161
b080364a
CH		 2162static uint64_t build_channel_report_mcic(void)
2163{
2164 uint64_t mcic;
2165
2166 /* subclass: indicate channel report pending */
2167 mcic = MCIC_SC_CP |
2168 /* subclass modifiers: none */
2169 /* storage errors: none */
2170 /* validity bits: no damage */
2171 MCIC_VB_WP | MCIC_VB_MS | MCIC_VB_PM | MCIC_VB_IA | MCIC_VB_FP |
2172 MCIC_VB_GR | MCIC_VB_CR | MCIC_VB_ST | MCIC_VB_AR | MCIC_VB_PR |
2173 MCIC_VB_FC | MCIC_VB_CT | MCIC_VB_CC;
7c72ac49 2174 if (s390_has_feat(S390_FEAT_VECTOR)) {
b080364a
CH		 2175 mcic |= MCIC_VB_VR;
2176 }
2177 return mcic;
2178}
2179
de13d216 2180void kvm_s390_crw_mchk(void)
09b99878 2181{
de13d216
CH		 2182 struct kvm_s390_irq irq = {
2183 .type = KVM_S390_MCHK,
2184 .u.mchk.cr14 = 1 << 28,
b080364a 2185 .u.mchk.mcic = build_channel_report_mcic(),
de13d216
CH		 2186 };
2187 kvm_s390_floating_interrupt(&irq);
09b99878
CH		 2188}
2189
2190void kvm_s390_enable_css_support(S390CPU *cpu)
2191{
09b99878
CH		 2192 int r;
2193
2194 /* Activate host kernel channel subsystem support. */
e080f0fd 2195 r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
09b99878
CH		 2196 assert(r == 0);
2197}
48475e14
AK		 2198
2199void kvm_arch_init_irq_routing(KVMState *s)
2200{
d426d9fb
CH		 2201 /*
2202 * Note that while irqchip capabilities generally imply that cpustates
2203 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2204 * have to override the common code kvm_halt_in_kernel_allowed setting.
2205 */
2206 if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
d426d9fb
CH		 2207 kvm_gsi_routing_allowed = true;
2208 kvm_halt_in_kernel_allowed = false;
2209 }
48475e14 2210}
b4436a0b 2211
cc3ac9c4
CH		 2212int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
2213 int vq, bool assign)
b4436a0b
CH		 2214{
2215 struct kvm_ioeventfd kick = {
2216 .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
2217 KVM_IOEVENTFD_FLAG_DATAMATCH,
cc3ac9c4 2218 .fd = event_notifier_get_fd(notifier),
b4436a0b
CH		 2219 .datamatch = vq,
2220 .addr = sch,
2221 .len = 8,
2222 };
2223 if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
2224 return -ENOSYS;
2225 }
2226 if (!assign) {
2227 kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
2228 }
2229 return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
2230}
1def6656
MR		 2231
2232int kvm_s390_get_memslot_count(KVMState *s)
2233{
2234 return kvm_check_extension(s, KVM_CAP_NR_MEMSLOTS);
2235}
c9e659c9 2236
9700230b
FZ		 2237int kvm_s390_get_ri(void)
2238{
2239 return cap_ri;
2240}
2241
c9e659c9
DH		 2242int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
2243{
2244 struct kvm_mp_state mp_state = {};
2245 int ret;
2246
2247 /* the kvm part might not have been initialized yet */
2248 if (CPU(cpu)->kvm_state == NULL) {
2249 return 0;
2250 }
2251
2252 switch (cpu_state) {
2253 case CPU_STATE_STOPPED:
2254 mp_state.mp_state = KVM_MP_STATE_STOPPED;
2255 break;
2256 case CPU_STATE_CHECK_STOP:
2257 mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
2258 break;
2259 case CPU_STATE_OPERATING:
2260 mp_state.mp_state = KVM_MP_STATE_OPERATING;
2261 break;
2262 case CPU_STATE_LOAD:
2263 mp_state.mp_state = KVM_MP_STATE_LOAD;
2264 break;
2265 default:
2266 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2267 cpu_state);
2268 exit(1);
2269 }
2270
2271 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
2272 if (ret) {
2273 trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
2274 strerror(-ret));
2275 }
2276
2277 return ret;
2278}
9e03a040 2279
3cda44f7
JF		 2280void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
2281{
2282 struct kvm_s390_irq_state irq_state;
2283 CPUState *cs = CPU(cpu);
2284 int32_t bytes;
2285
2286 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2287 return;
2288 }
2289
2290 irq_state.buf = (uint64_t) cpu->irqstate;
2291 irq_state.len = VCPU_IRQ_BUF_SIZE;
2292
2293 bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
2294 if (bytes < 0) {
2295 cpu->irqstate_saved_size = 0;
2296 error_report("Migration of interrupt state failed");
2297 return;
2298 }
2299
2300 cpu->irqstate_saved_size = bytes;
2301}
2302
2303int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
2304{
2305 CPUState *cs = CPU(cpu);
2306 struct kvm_s390_irq_state irq_state;
2307 int r;
2308
b853d4cb
SS		 2309 if (cpu->irqstate_saved_size == 0) {
2310 return 0;
2311 }
2312
3cda44f7
JF		 2313 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2314 return -ENOSYS;
2315 }
2316
3cda44f7
JF		 2317 irq_state.buf = (uint64_t) cpu->irqstate;
2318 irq_state.len = cpu->irqstate_saved_size;
2319
2320 r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
2321 if (r) {
2322 error_report("Setting interrupt state failed %d", r);
2323 }
2324 return r;
2325}
2326
9e03a040 2327int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
dc9f06ca 2328 uint64_t address, uint32_t data, PCIDevice *dev)
9e03a040
FB		 2329{
2330 S390PCIBusDevice *pbdev;
cdd85eb2 2331 uint32_t idx = data >> ZPCI_MSI_VEC_BITS;
9e03a040
FB		 2332 uint32_t vec = data & ZPCI_MSI_VEC_MASK;
2333
a975a24a 2334 pbdev = s390_pci_find_dev_by_idx(s390_get_phb(), idx);
9e03a040
FB		 2335 if (!pbdev) {
2336 DPRINTF("add_msi_route no dev\n");
2337 return -ENODEV;
2338 }
2339
2340 pbdev->routes.adapter.ind_offset = vec;
2341
2342 route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
2343 route->flags = 0;
2344 route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
2345 route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
2346 route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
2347 route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset;
2348 route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
2349 return 0;
2350}
1850b6b7 2351
38d87493
PX		 2352int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
2353 int vector, PCIDevice *dev)
2354{
2355 return 0;
2356}
2357
2358int kvm_arch_release_virq_post(int virq)
2359{
2360 return 0;
2361}
2362
1850b6b7
EA		 2363int kvm_arch_msi_data_to_gsi(uint32_t data)
2364{
2365 abort();
2366}
3b84c25c
DH		 2367
2368static inline int test_bit_inv(long nr, const unsigned long *addr)
2369{
2370 return test_bit(BE_BIT_NR(nr), addr);
2371}
2372
2373static inline void set_bit_inv(long nr, unsigned long *addr)
2374{
2375 set_bit(BE_BIT_NR(nr), addr);
2376}
2377
2378static int query_cpu_subfunc(S390FeatBitmap features)
2379{
2380 struct kvm_s390_vm_cpu_subfunc prop;
2381 struct kvm_device_attr attr = {
2382 .group = KVM_S390_VM_CPU_MODEL,
2383 .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC,
2384 .addr = (uint64_t) &prop,
2385 };
2386 int rc;
2387
2388 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2389 if (rc) {
2390 return rc;
2391 }
2392
2393 /*
2394 * We're going to add all subfunctions now, if the corresponding feature
2395 * is available that unlocks the query functions.
2396 */
2397 s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2398 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2399 s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2400 }
2401 if (test_bit(S390_FEAT_MSA, features)) {
2402 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2403 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2404 s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2405 s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2406 s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2407 }
2408 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2409 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2410 }
2411 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2412 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2413 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2414 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2415 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2416 }
2417 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2418 s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2419 }
2420 return 0;
2421}
2422
2423static int configure_cpu_subfunc(const S390FeatBitmap features)
2424{
2425 struct kvm_s390_vm_cpu_subfunc prop = {};
2426 struct kvm_device_attr attr = {
2427 .group = KVM_S390_VM_CPU_MODEL,
2428 .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC,
2429 .addr = (uint64_t) &prop,
2430 };
2431
2432 if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2433 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) {
2434 /* hardware support might be missing, IBC will handle most of this */
2435 return 0;
2436 }
2437
2438 s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2439 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2440 s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2441 prop.ptff[0] |= 0x80; /* query is always available */
2442 }
2443 if (test_bit(S390_FEAT_MSA, features)) {
2444 s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2445 prop.kmac[0] |= 0x80; /* query is always available */
2446 s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2447 prop.kmc[0] |= 0x80; /* query is always available */
2448 s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2449 prop.km[0] |= 0x80; /* query is always available */
2450 s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2451 prop.kimd[0] |= 0x80; /* query is always available */
2452 s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2453 prop.klmd[0] |= 0x80; /* query is always available */
2454 }
2455 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2456 s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2457 prop.pckmo[0] |= 0x80; /* query is always available */
2458 }
2459 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2460 s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2461 prop.kmctr[0] |= 0x80; /* query is always available */
2462 s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2463 prop.kmf[0] |= 0x80; /* query is always available */
2464 s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2465 prop.kmo[0] |= 0x80; /* query is always available */
2466 s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2467 prop.pcc[0] |= 0x80; /* query is always available */
2468 }
2469 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2470 s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2471 prop.ppno[0] |= 0x80; /* query is always available */
2472 }
2473 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2474}
2475
2476static int kvm_to_feat[][2] = {
2477 { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP },
2478 { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 },
2479 { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO },
2480 { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF },
2481 { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE },
2482 { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS },
2483 { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB },
2484 { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI },
2485 { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS },
2486 { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY },
2487 { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA },
2488 { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
2489 { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
2490};
2491
2492static int query_cpu_feat(S390FeatBitmap features)
2493{
2494 struct kvm_s390_vm_cpu_feat prop;
2495 struct kvm_device_attr attr = {
2496 .group = KVM_S390_VM_CPU_MODEL,
2497 .attr = KVM_S390_VM_CPU_MACHINE_FEAT,
2498 .addr = (uint64_t) &prop,
2499 };
2500 int rc;
2501 int i;
2502
2503 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2504 if (rc) {
2505 return rc;
2506 }
2507
2508 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2509 if (test_bit_inv(kvm_to_feat[i][0], (unsigned long *)prop.feat)) {
2510 set_bit(kvm_to_feat[i][1], features);
2511 }
2512 }
2513 return 0;
2514}
2515
2516static int configure_cpu_feat(const S390FeatBitmap features)
2517{
2518 struct kvm_s390_vm_cpu_feat prop = {};
2519 struct kvm_device_attr attr = {
2520 .group = KVM_S390_VM_CPU_MODEL,
2521 .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT,
2522 .addr = (uint64_t) &prop,
2523 };
2524 int i;
2525
2526 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2527 if (test_bit(kvm_to_feat[i][1], features)) {
2528 set_bit_inv(kvm_to_feat[i][0], (unsigned long *)prop.feat);
2529 }
2530 }
2531 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2532}
2533
2534bool kvm_s390_cpu_models_supported(void)
2535{
e73316d5 2536 if (!cpu_model_allowed()) {
34821036
DH		 2537 /* compatibility machines interfere with the cpu model */
2538 return false;
2539 }
3b84c25c
DH		 2540 return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2541 KVM_S390_VM_CPU_MACHINE) &&
2542 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2543 KVM_S390_VM_CPU_PROCESSOR) &&
2544 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2545 KVM_S390_VM_CPU_MACHINE_FEAT) &&
2546 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2547 KVM_S390_VM_CPU_PROCESSOR_FEAT) &&
2548 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2549 KVM_S390_VM_CPU_MACHINE_SUBFUNC);
2550}
2551
2552void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
2553{
2554 struct kvm_s390_vm_cpu_machine prop = {};
2555 struct kvm_device_attr attr = {
2556 .group = KVM_S390_VM_CPU_MODEL,
2557 .attr = KVM_S390_VM_CPU_MACHINE,
2558 .addr = (uint64_t) &prop,
2559 };
2560 uint16_t unblocked_ibc = 0, cpu_type = 0;
2561 int rc;
2562
2563 memset(model, 0, sizeof(*model));
2564
2565 if (!kvm_s390_cpu_models_supported()) {
2566 error_setg(errp, "KVM doesn't support CPU models");
2567 return;
2568 }
2569
2570 /* query the basic cpu model properties */
2571 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2572 if (rc) {
2573 error_setg(errp, "KVM: Error querying host CPU model: %d", rc);
2574 return;
2575 }
2576
2577 cpu_type = cpuid_type(prop.cpuid);
2578 if (has_ibc(prop.ibc)) {
2579 model->lowest_ibc = lowest_ibc(prop.ibc);
2580 unblocked_ibc = unblocked_ibc(prop.ibc);
2581 }
2582 model->cpu_id = cpuid_id(prop.cpuid);
2583 model->cpu_ver = 0xff;
2584
2585 /* get supported cpu features indicated via STFL(E) */
2586 s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL,
2587 (uint8_t *) prop.fac_mask);
2588 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2589 if (test_bit(S390_FEAT_STFLE, model->features)) {
2590 set_bit(S390_FEAT_DAT_ENH_2, model->features);
2591 }
2592 /* get supported cpu features indicated e.g. via SCLP */
2593 rc = query_cpu_feat(model->features);
2594 if (rc) {
2595 error_setg(errp, "KVM: Error querying CPU features: %d", rc);
2596 return;
2597 }
2598 /* get supported cpu subfunctions indicated via query / test bit */
2599 rc = query_cpu_subfunc(model->features);
2600 if (rc) {
2601 error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc);
2602 return;
2603 }
2604
07059eff
DH		 2605 /* with cpu model support, CMM is only indicated if really available */
2606 if (kvm_s390_cmma_available()) {
2607 set_bit(S390_FEAT_CMM, model->features);
2608 }
2609
3b84c25c
DH		 2610 if (s390_known_cpu_type(cpu_type)) {
2611 /* we want the exact model, even if some features are missing */
2612 model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc),
2613 ibc_ec_ga(unblocked_ibc), NULL);
2614 } else {
2615 /* model unknown, e.g. too new - search using features */
2616 model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc),
2617 ibc_ec_ga(unblocked_ibc),
2618 model->features);
2619 }
2620 if (!model->def) {
2621 error_setg(errp, "KVM: host CPU model could not be identified");
2622 return;
2623 }
2624 /* strip of features that are not part of the maximum model */
2625 bitmap_and(model->features, model->features, model->def->full_feat,
2626 S390_FEAT_MAX);
2627}
2628
2629void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp)
2630{
2631 struct kvm_s390_vm_cpu_processor prop = {
2632 .fac_list = { 0 },
2633 };
2634 struct kvm_device_attr attr = {
2635 .group = KVM_S390_VM_CPU_MODEL,
2636 .attr = KVM_S390_VM_CPU_PROCESSOR,
2637 .addr = (uint64_t) &prop,
2638 };
2639 int rc;
2640
2641 if (!model) {
07059eff
DH		 2642 /* compatibility handling if cpu models are disabled */
2643 if (kvm_s390_cmma_available() && !mem_path) {
2644 kvm_s390_enable_cmma();
2645 }
3b84c25c
DH		 2646 return;
2647 }
2648 if (!kvm_s390_cpu_models_supported()) {
2649 error_setg(errp, "KVM doesn't support CPU models");
2650 return;
2651 }
2652 prop.cpuid = s390_cpuid_from_cpu_model(model);
2653 prop.ibc = s390_ibc_from_cpu_model(model);
2654 /* configure cpu features indicated via STFL(e) */
2655 s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL,
2656 (uint8_t *) prop.fac_list);
2657 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2658 if (rc) {
2659 error_setg(errp, "KVM: Error configuring the CPU model: %d", rc);
2660 return;
2661 }
2662 /* configure cpu features indicated e.g. via SCLP */
2663 rc = configure_cpu_feat(model->features);
2664 if (rc) {
2665 error_setg(errp, "KVM: Error configuring CPU features: %d", rc);
2666 return;
2667 }
2668 /* configure cpu subfunctions indicated via query / test bit */
2669 rc = configure_cpu_subfunc(model->features);
2670 if (rc) {
2671 error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc);
2672 return;
2673 }
07059eff
DH		 2674 /* enable CMM via CMMA - disable on hugetlbfs */
2675 if (test_bit(S390_FEAT_CMM, model->features)) {
2676 if (mem_path) {
2677 error_report("Warning: CMM will not be enabled because it is not "
2678 "compatible to hugetlbfs.");
2679 } else {
2680 kvm_s390_enable_cmma();
2681 }
2682 }
3b84c25c 2683}
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