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24#include "qemu/osdep.h"
25#include <sys/ioctl.h>
26
27#include <linux/kvm.h>
28#include <asm/ptrace.h>
29
30#include "qemu-common.h"
31#include "cpu.h"
32#include "internal.h"
33#include "kvm_s390x.h"
34#include "qapi/error.h"
35#include "qemu/error-report.h"
36#include "qemu/timer.h"
37#include "qemu/units.h"
38#include "qemu/mmap-alloc.h"
39#include "qemu/log.h"
40#include "sysemu/sysemu.h"
41#include "sysemu/hw_accel.h"
42#include "hw/hw.h"
43#include "sysemu/device_tree.h"
44#include "exec/gdbstub.h"
45#include "trace.h"
46#include "hw/s390x/s390-pci-inst.h"
47#include "hw/s390x/s390-pci-bus.h"
48#include "hw/s390x/ipl.h"
49#include "hw/s390x/ebcdic.h"
50#include "exec/memattrs.h"
51#include "hw/s390x/s390-virtio-ccw.h"
52#include "hw/s390x/s390-virtio-hcall.h"
53
54#ifndef DEBUG_KVM
55#define DEBUG_KVM 0
56#endif
57
58#define DPRINTF(fmt, ...) do { \
59 if (DEBUG_KVM) { \
60 fprintf(stderr, fmt, ## __VA_ARGS__); \
61 } \
62} while (0)
63
64#define kvm_vm_check_mem_attr(s, attr) \
65 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
66
67#define IPA0_DIAG 0x8300
68#define IPA0_SIGP 0xae00
69#define IPA0_B2 0xb200
70#define IPA0_B9 0xb900
71#define IPA0_EB 0xeb00
72#define IPA0_E3 0xe300
73
74#define PRIV_B2_SCLP_CALL 0x20
75#define PRIV_B2_CSCH 0x30
76#define PRIV_B2_HSCH 0x31
77#define PRIV_B2_MSCH 0x32
78#define PRIV_B2_SSCH 0x33
79#define PRIV_B2_STSCH 0x34
80#define PRIV_B2_TSCH 0x35
81#define PRIV_B2_TPI 0x36
82#define PRIV_B2_SAL 0x37
83#define PRIV_B2_RSCH 0x38
84#define PRIV_B2_STCRW 0x39
85#define PRIV_B2_STCPS 0x3a
86#define PRIV_B2_RCHP 0x3b
87#define PRIV_B2_SCHM 0x3c
88#define PRIV_B2_CHSC 0x5f
89#define PRIV_B2_SIGA 0x74
90#define PRIV_B2_XSCH 0x76
91
92#define PRIV_EB_SQBS 0x8a
93#define PRIV_EB_PCISTB 0xd0
94#define PRIV_EB_SIC 0xd1
95
96#define PRIV_B9_EQBS 0x9c
97#define PRIV_B9_CLP 0xa0
98#define PRIV_B9_PCISTG 0xd0
99#define PRIV_B9_PCILG 0xd2
100#define PRIV_B9_RPCIT 0xd3
101
102#define PRIV_E3_MPCIFC 0xd0
103#define PRIV_E3_STPCIFC 0xd4
104
105#define DIAG_TIMEREVENT 0x288
106#define DIAG_IPL 0x308
107#define DIAG_KVM_HYPERCALL 0x500
108#define DIAG_KVM_BREAKPOINT 0x501
109
110#define ICPT_INSTRUCTION 0x04
111#define ICPT_PROGRAM 0x08
112#define ICPT_EXT_INT 0x14
113#define ICPT_WAITPSW 0x1c
114#define ICPT_SOFT_INTERCEPT 0x24
115#define ICPT_CPU_STOP 0x28
116#define ICPT_OPEREXC 0x2c
117#define ICPT_IO 0x40
118
119#define NR_LOCAL_IRQS 32
120
121
122
123
124#define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
125 (max_cpus + NR_LOCAL_IRQS))
126
127static CPUWatchpoint hw_watchpoint;
128
129
130
131
132static struct kvm_hw_breakpoint *hw_breakpoints;
133static int nb_hw_breakpoints;
134
135const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
136 KVM_CAP_LAST_INFO
137};
138
139static int cap_sync_regs;
140static int cap_async_pf;
141static int cap_mem_op;
142static int cap_s390_irq;
143static int cap_ri;
144static int cap_gs;
145static int cap_hpage_1m;
146
147static int active_cmma;
148
149static void *legacy_s390_alloc(size_t size, uint64_t *align, bool shared);
150
151static int kvm_s390_query_mem_limit(uint64_t *memory_limit)
152{
153 struct kvm_device_attr attr = {
154 .group = KVM_S390_VM_MEM_CTRL,
155 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
156 .addr = (uint64_t) memory_limit,
157 };
158
159 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
160}
161
162int kvm_s390_set_mem_limit(uint64_t new_limit, uint64_t *hw_limit)
163{
164 int rc;
165
166 struct kvm_device_attr attr = {
167 .group = KVM_S390_VM_MEM_CTRL,
168 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
169 .addr = (uint64_t) &new_limit,
170 };
171
172 if (!kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_LIMIT_SIZE)) {
173 return 0;
174 }
175
176 rc = kvm_s390_query_mem_limit(hw_limit);
177 if (rc) {
178 return rc;
179 } else if (*hw_limit < new_limit) {
180 return -E2BIG;
181 }
182
183 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
184}
185
186int kvm_s390_cmma_active(void)
187{
188 return active_cmma;
189}
190
191static bool kvm_s390_cmma_available(void)
192{
193 static bool initialized, value;
194
195 if (!initialized) {
196 initialized = true;
197 value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) &&
198 kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA);
199 }
200 return value;
201}
202
203void kvm_s390_cmma_reset(void)
204{
205 int rc;
206 struct kvm_device_attr attr = {
207 .group = KVM_S390_VM_MEM_CTRL,
208 .attr = KVM_S390_VM_MEM_CLR_CMMA,
209 };
210
211 if (!kvm_s390_cmma_active()) {
212 return;
213 }
214
215 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
216 trace_kvm_clear_cmma(rc);
217}
218
219static void kvm_s390_enable_cmma(void)
220{
221 int rc;
222 struct kvm_device_attr attr = {
223 .group = KVM_S390_VM_MEM_CTRL,
224 .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
225 };
226
227 if (cap_hpage_1m) {
228 warn_report("CMM will not be enabled because it is not "
229 "compatible with huge memory backings.");
230 return;
231 }
232 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
233 active_cmma = !rc;
234 trace_kvm_enable_cmma(rc);
235}
236
237static void kvm_s390_set_attr(uint64_t attr)
238{
239 struct kvm_device_attr attribute = {
240 .group = KVM_S390_VM_CRYPTO,
241 .attr = attr,
242 };
243
244 int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
245
246 if (ret) {
247 error_report("Failed to set crypto device attribute %lu: %s",
248 attr, strerror(-ret));
249 }
250}
251
252static void kvm_s390_init_aes_kw(void)
253{
254 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
255
256 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
257 NULL)) {
258 attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
259 }
260
261 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
262 kvm_s390_set_attr(attr);
263 }
264}
265
266static void kvm_s390_init_dea_kw(void)
267{
268 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
269
270 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
271 NULL)) {
272 attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
273 }
274
275 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
276 kvm_s390_set_attr(attr);
277 }
278}
279
280void kvm_s390_crypto_reset(void)
281{
282 if (s390_has_feat(S390_FEAT_MSA_EXT_3)) {
283 kvm_s390_init_aes_kw();
284 kvm_s390_init_dea_kw();
285 }
286}
287
288static int kvm_s390_configure_mempath_backing(KVMState *s)
289{
290 size_t path_psize = qemu_mempath_getpagesize(mem_path);
291
292 if (path_psize == 4 * KiB) {
293 return 0;
294 }
295
296 if (!hpage_1m_allowed()) {
297 error_report("This QEMU machine does not support huge page "
298 "mappings");
299 return -EINVAL;
300 }
301
302 if (path_psize != 1 * MiB) {
303 error_report("Memory backing with 2G pages was specified, "
304 "but KVM does not support this memory backing");
305 return -EINVAL;
306 }
307
308 if (kvm_vm_enable_cap(s, KVM_CAP_S390_HPAGE_1M, 0)) {
309 error_report("Memory backing with 1M pages was specified, "
310 "but KVM does not support this memory backing");
311 return -EINVAL;
312 }
313
314 cap_hpage_1m = 1;
315 return 0;
316}
317
318int kvm_arch_init(MachineState *ms, KVMState *s)
319{
320 MachineClass *mc = MACHINE_GET_CLASS(ms);
321
322 if (mem_path && kvm_s390_configure_mempath_backing(s)) {
323 return -EINVAL;
324 }
325
326 mc->default_cpu_type = S390_CPU_TYPE_NAME("host");
327 cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
328 cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
329 cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
330 cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
331
332 if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
333 || !kvm_check_extension(s, KVM_CAP_S390_COW)) {
334 phys_mem_set_alloc(legacy_s390_alloc);
335 }
336
337 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
338 kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
339 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
340 if (ri_allowed()) {
341 if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
342 cap_ri = 1;
343 }
344 }
345 if (cpu_model_allowed()) {
346 if (kvm_vm_enable_cap(s, KVM_CAP_S390_GS, 0) == 0) {
347 cap_gs = 1;
348 }
349 }
350
351
352
353
354
355
356
357
358
359 return 0;
360}
361
362int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
363{
364 return 0;
365}
366
367unsigned long kvm_arch_vcpu_id(CPUState *cpu)
368{
369 return cpu->cpu_index;
370}
371
372int kvm_arch_init_vcpu(CPUState *cs)
373{
374 S390CPU *cpu = S390_CPU(cs);
375 kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
376 cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE);
377 return 0;
378}
379
380void kvm_s390_reset_vcpu(S390CPU *cpu)
381{
382 CPUState *cs = CPU(cpu);
383
384
385
386
387
388
389 if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
390 error_report("Initial CPU reset failed on CPU %i", cs->cpu_index);
391 }
392}
393
394static int can_sync_regs(CPUState *cs, int regs)
395{
396 return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
397}
398
399int kvm_arch_put_registers(CPUState *cs, int level)
400{
401 S390CPU *cpu = S390_CPU(cs);
402 CPUS390XState *env = &cpu->env;
403 struct kvm_sregs sregs;
404 struct kvm_regs regs;
405 struct kvm_fpu fpu = {};
406 int r;
407 int i;
408
409
410 cs->kvm_run->psw_addr = env->psw.addr;
411 cs->kvm_run->psw_mask = env->psw.mask;
412
413 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
414 for (i = 0; i < 16; i++) {
415 cs->kvm_run->s.regs.gprs[i] = env->regs[i];
416 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
417 }
418 } else {
419 for (i = 0; i < 16; i++) {
420 regs.gprs[i] = env->regs[i];
421 }
422 r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
423 if (r < 0) {
424 return r;
425 }
426 }
427
428 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
429 for (i = 0; i < 32; i++) {
430 cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0].ll;
431 cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1].ll;
432 }
433 cs->kvm_run->s.regs.fpc = env->fpc;
434 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
435 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
436 for (i = 0; i < 16; i++) {
437 cs->kvm_run->s.regs.fprs[i] = get_freg(env, i)->ll;
438 }
439 cs->kvm_run->s.regs.fpc = env->fpc;
440 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
441 } else {
442
443 for (i = 0; i < 16; i++) {
444 fpu.fprs[i] = get_freg(env, i)->ll;
445 }
446 fpu.fpc = env->fpc;
447
448 r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
449 if (r < 0) {
450 return r;
451 }
452 }
453
454
455 if (level == KVM_PUT_RUNTIME_STATE) {
456 return 0;
457 }
458
459 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
460 cs->kvm_run->s.regs.cputm = env->cputm;
461 cs->kvm_run->s.regs.ckc = env->ckc;
462 cs->kvm_run->s.regs.todpr = env->todpr;
463 cs->kvm_run->s.regs.gbea = env->gbea;
464 cs->kvm_run->s.regs.pp = env->pp;
465 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
466 } else {
467
468
469
470
471
472 kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
473 kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
474 kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
475 kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
476 kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
477 }
478
479 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
480 memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64);
481 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB;
482 }
483
484
485 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
486 cs->kvm_run->s.regs.pft = env->pfault_token;
487 cs->kvm_run->s.regs.pfs = env->pfault_select;
488 cs->kvm_run->s.regs.pfc = env->pfault_compare;
489 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
490 } else if (cap_async_pf) {
491 r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
492 if (r < 0) {
493 return r;
494 }
495 r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
496 if (r < 0) {
497 return r;
498 }
499 r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
500 if (r < 0) {
501 return r;
502 }
503 }
504
505
506 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
507 for (i = 0; i < 16; i++) {
508 cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
509 cs->kvm_run->s.regs.crs[i] = env->cregs[i];
510 }
511 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
512 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
513 } else {
514 for (i = 0; i < 16; i++) {
515 sregs.acrs[i] = env->aregs[i];
516 sregs.crs[i] = env->cregs[i];
517 }
518 r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
519 if (r < 0) {
520 return r;
521 }
522 }
523
524 if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
525 memcpy(cs->kvm_run->s.regs.gscb, env->gscb, 32);
526 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GSCB;
527 }
528
529 if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
530 cs->kvm_run->s.regs.bpbc = env->bpbc;
531 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_BPBC;
532 }
533
534 if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
535 cs->kvm_run->s.regs.etoken = env->etoken;
536 cs->kvm_run->s.regs.etoken_extension = env->etoken_extension;
537 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ETOKEN;
538 }
539
540
541 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
542 cs->kvm_run->s.regs.prefix = env->psa;
543 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
544 } else {
545
546 }
547 return 0;
548}
549
550int kvm_arch_get_registers(CPUState *cs)
551{
552 S390CPU *cpu = S390_CPU(cs);
553 CPUS390XState *env = &cpu->env;
554 struct kvm_sregs sregs;
555 struct kvm_regs regs;
556 struct kvm_fpu fpu;
557 int i, r;
558
559
560 env->psw.addr = cs->kvm_run->psw_addr;
561 env->psw.mask = cs->kvm_run->psw_mask;
562
563
564 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
565 for (i = 0; i < 16; i++) {
566 env->regs[i] = cs->kvm_run->s.regs.gprs[i];
567 }
568 } else {
569 r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
570 if (r < 0) {
571 return r;
572 }
573 for (i = 0; i < 16; i++) {
574 env->regs[i] = regs.gprs[i];
575 }
576 }
577
578
579 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
580 for (i = 0; i < 16; i++) {
581 env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
582 env->cregs[i] = cs->kvm_run->s.regs.crs[i];
583 }
584 } else {
585 r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
586 if (r < 0) {
587 return r;
588 }
589 for (i = 0; i < 16; i++) {
590 env->aregs[i] = sregs.acrs[i];
591 env->cregs[i] = sregs.crs[i];
592 }
593 }
594
595
596 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
597 for (i = 0; i < 32; i++) {
598 env->vregs[i][0].ll = cs->kvm_run->s.regs.vrs[i][0];
599 env->vregs[i][1].ll = cs->kvm_run->s.regs.vrs[i][1];
600 }
601 env->fpc = cs->kvm_run->s.regs.fpc;
602 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
603 for (i = 0; i < 16; i++) {
604 get_freg(env, i)->ll = cs->kvm_run->s.regs.fprs[i];
605 }
606 env->fpc = cs->kvm_run->s.regs.fpc;
607 } else {
608 r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
609 if (r < 0) {
610 return r;
611 }
612 for (i = 0; i < 16; i++) {
613 get_freg(env, i)->ll = fpu.fprs[i];
614 }
615 env->fpc = fpu.fpc;
616 }
617
618
619 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
620 env->psa = cs->kvm_run->s.regs.prefix;
621 }
622
623 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
624 env->cputm = cs->kvm_run->s.regs.cputm;
625 env->ckc = cs->kvm_run->s.regs.ckc;
626 env->todpr = cs->kvm_run->s.regs.todpr;
627 env->gbea = cs->kvm_run->s.regs.gbea;
628 env->pp = cs->kvm_run->s.regs.pp;
629 } else {
630
631
632
633
634
635 kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
636 kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
637 kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
638 kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
639 kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
640 }
641
642 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
643 memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64);
644 }
645
646 if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
647 memcpy(env->gscb, cs->kvm_run->s.regs.gscb, 32);
648 }
649
650 if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
651 env->bpbc = cs->kvm_run->s.regs.bpbc;
652 }
653
654 if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
655 env->etoken = cs->kvm_run->s.regs.etoken;
656 env->etoken_extension = cs->kvm_run->s.regs.etoken_extension;
657 }
658
659
660 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
661 env->pfault_token = cs->kvm_run->s.regs.pft;
662 env->pfault_select = cs->kvm_run->s.regs.pfs;
663 env->pfault_compare = cs->kvm_run->s.regs.pfc;
664 } else if (cap_async_pf) {
665 r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
666 if (r < 0) {
667 return r;
668 }
669 r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
670 if (r < 0) {
671 return r;
672 }
673 r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
674 if (r < 0) {
675 return r;
676 }
677 }
678
679 return 0;
680}
681
682int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
683{
684 int r;
685 struct kvm_device_attr attr = {
686 .group = KVM_S390_VM_TOD,
687 .attr = KVM_S390_VM_TOD_LOW,
688 .addr = (uint64_t)tod_low,
689 };
690
691 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
692 if (r) {
693 return r;
694 }
695
696 attr.attr = KVM_S390_VM_TOD_HIGH;
697 attr.addr = (uint64_t)tod_high;
698 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
699}
700
701int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
702{
703 int r;
704 struct kvm_s390_vm_tod_clock gtod;
705 struct kvm_device_attr attr = {
706 .group = KVM_S390_VM_TOD,
707 .attr = KVM_S390_VM_TOD_EXT,
708 .addr = (uint64_t)>od,
709 };
710
711 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
712 *tod_high = gtod.epoch_idx;
713 *tod_low = gtod.tod;
714
715 return r;
716}
717
718int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_low)
719{
720 int r;
721 struct kvm_device_attr attr = {
722 .group = KVM_S390_VM_TOD,
723 .attr = KVM_S390_VM_TOD_LOW,
724 .addr = (uint64_t)&tod_low,
725 };
726
727 r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
728 if (r) {
729 return r;
730 }
731
732 attr.attr = KVM_S390_VM_TOD_HIGH;
733 attr.addr = (uint64_t)&tod_high;
734 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
735}
736
737int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low)
738{
739 struct kvm_s390_vm_tod_clock gtod = {
740 .epoch_idx = tod_high,
741 .tod = tod_low,
742 };
743 struct kvm_device_attr attr = {
744 .group = KVM_S390_VM_TOD,
745 .attr = KVM_S390_VM_TOD_EXT,
746 .addr = (uint64_t)>od,
747 };
748
749 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
750}
751
752
753
754
755
756
757
758
759
760
761
762
763
764int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
765 int len, bool is_write)
766{
767 struct kvm_s390_mem_op mem_op = {
768 .gaddr = addr,
769 .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
770 .size = len,
771 .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
772 : KVM_S390_MEMOP_LOGICAL_READ,
773 .buf = (uint64_t)hostbuf,
774 .ar = ar,
775 };
776 int ret;
777
778 if (!cap_mem_op) {
779 return -ENOSYS;
780 }
781 if (!hostbuf) {
782 mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
783 }
784
785 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
786 if (ret < 0) {
787 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret));
788 }
789 return ret;
790}
791
792
793
794
795
796
797
798
799
800
801
802static void *legacy_s390_alloc(size_t size, uint64_t *align, bool shared)
803{
804 static void *mem;
805
806 if (mem) {
807
808 return NULL;
809 }
810
811 mem = mmap((void *) 0x800000000ULL, size,
812 PROT_EXEC|PROT_READ|PROT_WRITE,
813 MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
814 if (mem == MAP_FAILED) {
815 mem = NULL;
816 }
817 if (mem && align) {
818 *align = QEMU_VMALLOC_ALIGN;
819 }
820 return mem;
821}
822
823static uint8_t const *sw_bp_inst;
824static uint8_t sw_bp_ilen;
825
826static void determine_sw_breakpoint_instr(void)
827{
828
829 static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
830
831 static const uint8_t instr_0x0000[] = {0x00, 0x00};
832
833 if (sw_bp_inst) {
834 return;
835 }
836 if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) {
837 sw_bp_inst = diag_501;
838 sw_bp_ilen = sizeof(diag_501);
839 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
840 } else {
841 sw_bp_inst = instr_0x0000;
842 sw_bp_ilen = sizeof(instr_0x0000);
843 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
844 }
845}
846
847int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
848{
849 determine_sw_breakpoint_instr();
850
851 if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
852 sw_bp_ilen, 0) ||
853 cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) {
854 return -EINVAL;
855 }
856 return 0;
857}
858
859int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
860{
861 uint8_t t[MAX_ILEN];
862
863 if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) {
864 return -EINVAL;
865 } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) {
866 return -EINVAL;
867 } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
868 sw_bp_ilen, 1)) {
869 return -EINVAL;
870 }
871
872 return 0;
873}
874
875static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
876 int len, int type)
877{
878 int n;
879
880 for (n = 0; n < nb_hw_breakpoints; n++) {
881 if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
882 (hw_breakpoints[n].len == len || len == -1)) {
883 return &hw_breakpoints[n];
884 }
885 }
886
887 return NULL;
888}
889
890static int insert_hw_breakpoint(target_ulong addr, int len, int type)
891{
892 int size;
893
894 if (find_hw_breakpoint(addr, len, type)) {
895 return -EEXIST;
896 }
897
898 size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
899
900 if (!hw_breakpoints) {
901 nb_hw_breakpoints = 0;
902 hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
903 } else {
904 hw_breakpoints =
905 (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
906 }
907
908 if (!hw_breakpoints) {
909 nb_hw_breakpoints = 0;
910 return -ENOMEM;
911 }
912
913 hw_breakpoints[nb_hw_breakpoints].addr = addr;
914 hw_breakpoints[nb_hw_breakpoints].len = len;
915 hw_breakpoints[nb_hw_breakpoints].type = type;
916
917 nb_hw_breakpoints++;
918
919 return 0;
920}
921
922int kvm_arch_insert_hw_breakpoint(target_ulong addr,
923 target_ulong len, int type)
924{
925 switch (type) {
926 case GDB_BREAKPOINT_HW:
927 type = KVM_HW_BP;
928 break;
929 case GDB_WATCHPOINT_WRITE:
930 if (len < 1) {
931 return -EINVAL;
932 }
933 type = KVM_HW_WP_WRITE;
934 break;
935 default:
936 return -ENOSYS;
937 }
938 return insert_hw_breakpoint(addr, len, type);
939}
940
941int kvm_arch_remove_hw_breakpoint(target_ulong addr,
942 target_ulong len, int type)
943{
944 int size;
945 struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
946
947 if (bp == NULL) {
948 return -ENOENT;
949 }
950
951 nb_hw_breakpoints--;
952 if (nb_hw_breakpoints > 0) {
953
954
955
956
957 if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
958 *bp = hw_breakpoints[nb_hw_breakpoints];
959 }
960 size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
961 hw_breakpoints =
962 (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
963 } else {
964 g_free(hw_breakpoints);
965 hw_breakpoints = NULL;
966 }
967
968 return 0;
969}
970
971void kvm_arch_remove_all_hw_breakpoints(void)
972{
973 nb_hw_breakpoints = 0;
974 g_free(hw_breakpoints);
975 hw_breakpoints = NULL;
976}
977
978void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
979{
980 int i;
981
982 if (nb_hw_breakpoints > 0) {
983 dbg->arch.nr_hw_bp = nb_hw_breakpoints;
984 dbg->arch.hw_bp = hw_breakpoints;
985
986 for (i = 0; i < nb_hw_breakpoints; ++i) {
987 hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
988 hw_breakpoints[i].addr);
989 }
990 dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
991 } else {
992 dbg->arch.nr_hw_bp = 0;
993 dbg->arch.hw_bp = NULL;
994 }
995}
996
997void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
998{
999}
1000
1001MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
1002{
1003 return MEMTXATTRS_UNSPECIFIED;
1004}
1005
1006int kvm_arch_process_async_events(CPUState *cs)
1007{
1008 return cs->halted;
1009}
1010
1011static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
1012 struct kvm_s390_interrupt *interrupt)
1013{
1014 int r = 0;
1015
1016 interrupt->type = irq->type;
1017 switch (irq->type) {
1018 case KVM_S390_INT_VIRTIO:
1019 interrupt->parm = irq->u.ext.ext_params;
1020
1021 case KVM_S390_INT_PFAULT_INIT:
1022 case KVM_S390_INT_PFAULT_DONE:
1023 interrupt->parm64 = irq->u.ext.ext_params2;
1024 break;
1025 case KVM_S390_PROGRAM_INT:
1026 interrupt->parm = irq->u.pgm.code;
1027 break;
1028 case KVM_S390_SIGP_SET_PREFIX:
1029 interrupt->parm = irq->u.prefix.address;
1030 break;
1031 case KVM_S390_INT_SERVICE:
1032 interrupt->parm = irq->u.ext.ext_params;
1033 break;
1034 case KVM_S390_MCHK:
1035 interrupt->parm = irq->u.mchk.cr14;
1036 interrupt->parm64 = irq->u.mchk.mcic;
1037 break;
1038 case KVM_S390_INT_EXTERNAL_CALL:
1039 interrupt->parm = irq->u.extcall.code;
1040 break;
1041 case KVM_S390_INT_EMERGENCY:
1042 interrupt->parm = irq->u.emerg.code;
1043 break;
1044 case KVM_S390_SIGP_STOP:
1045 case KVM_S390_RESTART:
1046 break;
1047 case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
1048 interrupt->parm = irq->u.io.subchannel_id << 16;
1049 interrupt->parm |= irq->u.io.subchannel_nr;
1050 interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
1051 interrupt->parm64 |= irq->u.io.io_int_word;
1052 break;
1053 default:
1054 r = -EINVAL;
1055 break;
1056 }
1057 return r;
1058}
1059
1060static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
1061{
1062 struct kvm_s390_interrupt kvmint = {};
1063 int r;
1064
1065 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
1066 if (r < 0) {
1067 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
1068 exit(1);
1069 }
1070
1071 r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
1072 if (r < 0) {
1073 fprintf(stderr, "KVM failed to inject interrupt\n");
1074 exit(1);
1075 }
1076}
1077
1078void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
1079{
1080 CPUState *cs = CPU(cpu);
1081 int r;
1082
1083 if (cap_s390_irq) {
1084 r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
1085 if (!r) {
1086 return;
1087 }
1088 error_report("KVM failed to inject interrupt %llx", irq->type);
1089 exit(1);
1090 }
1091
1092 inject_vcpu_irq_legacy(cs, irq);
1093}
1094
1095void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq *irq)
1096{
1097 struct kvm_s390_interrupt kvmint = {};
1098 int r;
1099
1100 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
1101 if (r < 0) {
1102 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
1103 exit(1);
1104 }
1105
1106 r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
1107 if (r < 0) {
1108 fprintf(stderr, "KVM failed to inject interrupt\n");
1109 exit(1);
1110 }
1111}
1112
1113void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code)
1114{
1115 struct kvm_s390_irq irq = {
1116 .type = KVM_S390_PROGRAM_INT,
1117 .u.pgm.code = code,
1118 };
1119 qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n",
1120 cpu->env.psw.addr);
1121 kvm_s390_vcpu_interrupt(cpu, &irq);
1122}
1123
1124void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
1125{
1126 struct kvm_s390_irq irq = {
1127 .type = KVM_S390_PROGRAM_INT,
1128 .u.pgm.code = code,
1129 .u.pgm.trans_exc_code = te_code,
1130 .u.pgm.exc_access_id = te_code & 3,
1131 };
1132
1133 kvm_s390_vcpu_interrupt(cpu, &irq);
1134}
1135
1136static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
1137 uint16_t ipbh0)
1138{
1139 CPUS390XState *env = &cpu->env;
1140 uint64_t sccb;
1141 uint32_t code;
1142 int r = 0;
1143
1144 sccb = env->regs[ipbh0 & 0xf];
1145 code = env->regs[(ipbh0 & 0xf0) >> 4];
1146
1147 r = sclp_service_call(env, sccb, code);
1148 if (r < 0) {
1149 kvm_s390_program_interrupt(cpu, -r);
1150 } else {
1151 setcc(cpu, r);
1152 }
1153
1154 return 0;
1155}
1156
1157static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1158{
1159 CPUS390XState *env = &cpu->env;
1160 int rc = 0;
1161 uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
1162
1163 switch (ipa1) {
1164 case PRIV_B2_XSCH:
1165 ioinst_handle_xsch(cpu, env->regs[1], RA_IGNORED);
1166 break;
1167 case PRIV_B2_CSCH:
1168 ioinst_handle_csch(cpu, env->regs[1], RA_IGNORED);
1169 break;
1170 case PRIV_B2_HSCH:
1171 ioinst_handle_hsch(cpu, env->regs[1], RA_IGNORED);
1172 break;
1173 case PRIV_B2_MSCH:
1174 ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1175 break;
1176 case PRIV_B2_SSCH:
1177 ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1178 break;
1179 case PRIV_B2_STCRW:
1180 ioinst_handle_stcrw(cpu, run->s390_sieic.ipb, RA_IGNORED);
1181 break;
1182 case PRIV_B2_STSCH:
1183 ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1184 break;
1185 case PRIV_B2_TSCH:
1186
1187 fprintf(stderr, "Spurious tsch intercept\n");
1188 break;
1189 case PRIV_B2_CHSC:
1190 ioinst_handle_chsc(cpu, run->s390_sieic.ipb, RA_IGNORED);
1191 break;
1192 case PRIV_B2_TPI:
1193
1194 fprintf(stderr, "Spurious tpi intercept\n");
1195 break;
1196 case PRIV_B2_SCHM:
1197 ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
1198 run->s390_sieic.ipb, RA_IGNORED);
1199 break;
1200 case PRIV_B2_RSCH:
1201 ioinst_handle_rsch(cpu, env->regs[1], RA_IGNORED);
1202 break;
1203 case PRIV_B2_RCHP:
1204 ioinst_handle_rchp(cpu, env->regs[1], RA_IGNORED);
1205 break;
1206 case PRIV_B2_STCPS:
1207
1208 break;
1209 case PRIV_B2_SAL:
1210 ioinst_handle_sal(cpu, env->regs[1], RA_IGNORED);
1211 break;
1212 case PRIV_B2_SIGA:
1213
1214 setcc(cpu, 3);
1215 break;
1216 case PRIV_B2_SCLP_CALL:
1217 rc = kvm_sclp_service_call(cpu, run, ipbh0);
1218 break;
1219 default:
1220 rc = -1;
1221 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
1222 break;
1223 }
1224
1225 return rc;
1226}
1227
1228static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
1229 uint8_t *ar)
1230{
1231 CPUS390XState *env = &cpu->env;
1232 uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
1233 uint32_t base2 = run->s390_sieic.ipb >> 28;
1234 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1235 ((run->s390_sieic.ipb & 0xff00) << 4);
1236
1237 if (disp2 & 0x80000) {
1238 disp2 += 0xfff00000;
1239 }
1240 if (ar) {
1241 *ar = base2;
1242 }
1243
1244 return (base2 ? env->regs[base2] : 0) +
1245 (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
1246}
1247
1248static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
1249 uint8_t *ar)
1250{
1251 CPUS390XState *env = &cpu->env;
1252 uint32_t base2 = run->s390_sieic.ipb >> 28;
1253 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1254 ((run->s390_sieic.ipb & 0xff00) << 4);
1255
1256 if (disp2 & 0x80000) {
1257 disp2 += 0xfff00000;
1258 }
1259 if (ar) {
1260 *ar = base2;
1261 }
1262
1263 return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
1264}
1265
1266static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
1267{
1268 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1269
1270 if (s390_has_feat(S390_FEAT_ZPCI)) {
1271 return clp_service_call(cpu, r2, RA_IGNORED);
1272 } else {
1273 return -1;
1274 }
1275}
1276
1277static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
1278{
1279 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1280 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1281
1282 if (s390_has_feat(S390_FEAT_ZPCI)) {
1283 return pcilg_service_call(cpu, r1, r2, RA_IGNORED);
1284 } else {
1285 return -1;
1286 }
1287}
1288
1289static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
1290{
1291 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1292 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1293
1294 if (s390_has_feat(S390_FEAT_ZPCI)) {
1295 return pcistg_service_call(cpu, r1, r2, RA_IGNORED);
1296 } else {
1297 return -1;
1298 }
1299}
1300
1301static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1302{
1303 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1304 uint64_t fiba;
1305 uint8_t ar;
1306
1307 if (s390_has_feat(S390_FEAT_ZPCI)) {
1308 fiba = get_base_disp_rxy(cpu, run, &ar);
1309
1310 return stpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
1311 } else {
1312 return -1;
1313 }
1314}
1315
1316static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
1317{
1318 CPUS390XState *env = &cpu->env;
1319 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1320 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1321 uint8_t isc;
1322 uint16_t mode;
1323 int r;
1324
1325 mode = env->regs[r1] & 0xffff;
1326 isc = (env->regs[r3] >> 27) & 0x7;
1327 r = css_do_sic(env, isc, mode);
1328 if (r) {
1329 kvm_s390_program_interrupt(cpu, -r);
1330 }
1331
1332 return 0;
1333}
1334
1335static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
1336{
1337 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1338 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1339
1340 if (s390_has_feat(S390_FEAT_ZPCI)) {
1341 return rpcit_service_call(cpu, r1, r2, RA_IGNORED);
1342 } else {
1343 return -1;
1344 }
1345}
1346
1347static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
1348{
1349 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1350 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1351 uint64_t gaddr;
1352 uint8_t ar;
1353
1354 if (s390_has_feat(S390_FEAT_ZPCI)) {
1355 gaddr = get_base_disp_rsy(cpu, run, &ar);
1356
1357 return pcistb_service_call(cpu, r1, r3, gaddr, ar, RA_IGNORED);
1358 } else {
1359 return -1;
1360 }
1361}
1362
1363static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1364{
1365 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1366 uint64_t fiba;
1367 uint8_t ar;
1368
1369 if (s390_has_feat(S390_FEAT_ZPCI)) {
1370 fiba = get_base_disp_rxy(cpu, run, &ar);
1371
1372 return mpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
1373 } else {
1374 return -1;
1375 }
1376}
1377
1378static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1379{
1380 int r = 0;
1381
1382 switch (ipa1) {
1383 case PRIV_B9_CLP:
1384 r = kvm_clp_service_call(cpu, run);
1385 break;
1386 case PRIV_B9_PCISTG:
1387 r = kvm_pcistg_service_call(cpu, run);
1388 break;
1389 case PRIV_B9_PCILG:
1390 r = kvm_pcilg_service_call(cpu, run);
1391 break;
1392 case PRIV_B9_RPCIT:
1393 r = kvm_rpcit_service_call(cpu, run);
1394 break;
1395 case PRIV_B9_EQBS:
1396
1397 r = -1;
1398 break;
1399 default:
1400 r = -1;
1401 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
1402 break;
1403 }
1404
1405 return r;
1406}
1407
1408static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1409{
1410 int r = 0;
1411
1412 switch (ipbl) {
1413 case PRIV_EB_PCISTB:
1414 r = kvm_pcistb_service_call(cpu, run);
1415 break;
1416 case PRIV_EB_SIC:
1417 r = kvm_sic_service_call(cpu, run);
1418 break;
1419 case PRIV_EB_SQBS:
1420
1421 r = -1;
1422 break;
1423 default:
1424 r = -1;
1425 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
1426 break;
1427 }
1428
1429 return r;
1430}
1431
1432static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1433{
1434 int r = 0;
1435
1436 switch (ipbl) {
1437 case PRIV_E3_MPCIFC:
1438 r = kvm_mpcifc_service_call(cpu, run);
1439 break;
1440 case PRIV_E3_STPCIFC:
1441 r = kvm_stpcifc_service_call(cpu, run);
1442 break;
1443 default:
1444 r = -1;
1445 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
1446 break;
1447 }
1448
1449 return r;
1450}
1451
1452static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
1453{
1454 CPUS390XState *env = &cpu->env;
1455 int ret;
1456
1457 ret = s390_virtio_hypercall(env);
1458 if (ret == -EINVAL) {
1459 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1460 return 0;
1461 }
1462
1463 return ret;
1464}
1465
1466static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
1467{
1468 uint64_t r1, r3;
1469 int rc;
1470
1471 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1472 r3 = run->s390_sieic.ipa & 0x000f;
1473 rc = handle_diag_288(&cpu->env, r1, r3);
1474 if (rc) {
1475 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1476 }
1477}
1478
1479static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
1480{
1481 uint64_t r1, r3;
1482
1483 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1484 r3 = run->s390_sieic.ipa & 0x000f;
1485 handle_diag_308(&cpu->env, r1, r3, RA_IGNORED);
1486}
1487
1488static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
1489{
1490 CPUS390XState *env = &cpu->env;
1491 unsigned long pc;
1492
1493 pc = env->psw.addr - sw_bp_ilen;
1494 if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
1495 env->psw.addr = pc;
1496 return EXCP_DEBUG;
1497 }
1498
1499 return -ENOENT;
1500}
1501
1502#define DIAG_KVM_CODE_MASK 0x000000000000ffff
1503
1504static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
1505{
1506 int r = 0;
1507 uint16_t func_code;
1508
1509
1510
1511
1512
1513 func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
1514 switch (func_code) {
1515 case DIAG_TIMEREVENT:
1516 kvm_handle_diag_288(cpu, run);
1517 break;
1518 case DIAG_IPL:
1519 kvm_handle_diag_308(cpu, run);
1520 break;
1521 case DIAG_KVM_HYPERCALL:
1522 r = handle_hypercall(cpu, run);
1523 break;
1524 case DIAG_KVM_BREAKPOINT:
1525 r = handle_sw_breakpoint(cpu, run);
1526 break;
1527 default:
1528 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
1529 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1530 break;
1531 }
1532
1533 return r;
1534}
1535
1536static int kvm_s390_handle_sigp(S390CPU *cpu, uint8_t ipa1, uint32_t ipb)
1537{
1538 CPUS390XState *env = &cpu->env;
1539 const uint8_t r1 = ipa1 >> 4;
1540 const uint8_t r3 = ipa1 & 0x0f;
1541 int ret;
1542 uint8_t order;
1543
1544
1545 order = decode_basedisp_rs(env, ipb, NULL) & SIGP_ORDER_MASK;
1546
1547 ret = handle_sigp(env, order, r1, r3);
1548 setcc(cpu, ret);
1549 return 0;
1550}
1551
1552static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
1553{
1554 unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
1555 uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
1556 int r = -1;
1557
1558 DPRINTF("handle_instruction 0x%x 0x%x\n",
1559 run->s390_sieic.ipa, run->s390_sieic.ipb);
1560 switch (ipa0) {
1561 case IPA0_B2:
1562 r = handle_b2(cpu, run, ipa1);
1563 break;
1564 case IPA0_B9:
1565 r = handle_b9(cpu, run, ipa1);
1566 break;
1567 case IPA0_EB:
1568 r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
1569 break;
1570 case IPA0_E3:
1571 r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
1572 break;
1573 case IPA0_DIAG:
1574 r = handle_diag(cpu, run, run->s390_sieic.ipb);
1575 break;
1576 case IPA0_SIGP:
1577 r = kvm_s390_handle_sigp(cpu, ipa1, run->s390_sieic.ipb);
1578 break;
1579 }
1580
1581 if (r < 0) {
1582 r = 0;
1583 kvm_s390_program_interrupt(cpu, PGM_OPERATION);
1584 }
1585
1586 return r;
1587}
1588
1589static void unmanageable_intercept(S390CPU *cpu, S390CrashReason reason,
1590 int pswoffset)
1591{
1592 CPUState *cs = CPU(cpu);
1593
1594 s390_cpu_halt(cpu);
1595 cpu->env.crash_reason = reason;
1596 qemu_system_guest_panicked(cpu_get_crash_info(cs));
1597}
1598
1599
1600static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
1601{
1602 CPUState *cs = CPU(cpu);
1603 PSW oldpsw, newpsw;
1604
1605 newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
1606 offsetof(LowCore, program_new_psw));
1607 newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
1608 offsetof(LowCore, program_new_psw) + 8);
1609 oldpsw.mask = run->psw_mask;
1610 oldpsw.addr = run->psw_addr;
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620 if (oldpsw.addr - newpsw.addr <= 6 &&
1621 !(newpsw.mask & PSW_MASK_WAIT) &&
1622 !(oldpsw.mask & PSW_MASK_PSTATE) &&
1623 (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&
1624 (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) {
1625 unmanageable_intercept(cpu, S390_CRASH_REASON_OPINT_LOOP,
1626 offsetof(LowCore, program_new_psw));
1627 return EXCP_HALTED;
1628 }
1629 return 0;
1630}
1631
1632static int handle_intercept(S390CPU *cpu)
1633{
1634 CPUState *cs = CPU(cpu);
1635 struct kvm_run *run = cs->kvm_run;
1636 int icpt_code = run->s390_sieic.icptcode;
1637 int r = 0;
1638
1639 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code,
1640 (long)cs->kvm_run->psw_addr);
1641 switch (icpt_code) {
1642 case ICPT_INSTRUCTION:
1643 r = handle_instruction(cpu, run);
1644 break;
1645 case ICPT_PROGRAM:
1646 unmanageable_intercept(cpu, S390_CRASH_REASON_PGMINT_LOOP,
1647 offsetof(LowCore, program_new_psw));
1648 r = EXCP_HALTED;
1649 break;
1650 case ICPT_EXT_INT:
1651 unmanageable_intercept(cpu, S390_CRASH_REASON_EXTINT_LOOP,
1652 offsetof(LowCore, external_new_psw));
1653 r = EXCP_HALTED;
1654 break;
1655 case ICPT_WAITPSW:
1656
1657 s390_handle_wait(cpu);
1658 r = EXCP_HALTED;
1659 break;
1660 case ICPT_CPU_STOP:
1661 do_stop_interrupt(&cpu->env);
1662 r = EXCP_HALTED;
1663 break;
1664 case ICPT_OPEREXC:
1665
1666 r = handle_sw_breakpoint(cpu, run);
1667 if (r == -ENOENT) {
1668
1669 r = handle_oper_loop(cpu, run);
1670 if (r == 0) {
1671 kvm_s390_program_interrupt(cpu, PGM_OPERATION);
1672 }
1673 }
1674 break;
1675 case ICPT_SOFT_INTERCEPT:
1676 fprintf(stderr, "KVM unimplemented icpt SOFT\n");
1677 exit(1);
1678 break;
1679 case ICPT_IO:
1680 fprintf(stderr, "KVM unimplemented icpt IO\n");
1681 exit(1);
1682 break;
1683 default:
1684 fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
1685 exit(1);
1686 break;
1687 }
1688
1689 return r;
1690}
1691
1692static int handle_tsch(S390CPU *cpu)
1693{
1694 CPUState *cs = CPU(cpu);
1695 struct kvm_run *run = cs->kvm_run;
1696 int ret;
1697
1698 ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb,
1699 RA_IGNORED);
1700 if (ret < 0) {
1701
1702
1703
1704
1705 if (run->s390_tsch.dequeued) {
1706 s390_io_interrupt(run->s390_tsch.subchannel_id,
1707 run->s390_tsch.subchannel_nr,
1708 run->s390_tsch.io_int_parm,
1709 run->s390_tsch.io_int_word);
1710 }
1711 ret = 0;
1712 }
1713 return ret;
1714}
1715
1716static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
1717{
1718 SysIB_322 sysib;
1719 int del;
1720
1721 if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
1722 return;
1723 }
1724
1725 memmove(&sysib.ext_names[1], &sysib.ext_names[0],
1726 sizeof(sysib.ext_names[0]) * (sysib.count - 1));
1727
1728
1729
1730 for (del = 1; del < sysib.count; del++) {
1731 if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
1732 break;
1733 }
1734 }
1735 if (del < sysib.count) {
1736 memset(sysib.ext_names[del], 0,
1737 sizeof(sysib.ext_names[0]) * (sysib.count - del));
1738 }
1739
1740 if (qemu_name) {
1741 memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
1742 ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
1743 strlen(qemu_name)));
1744 }
1745 sysib.vm[0].ext_name_encoding = 2;
1746 memset(sysib.ext_names[0], 0, sizeof(sysib.ext_names[0]));
1747
1748
1749
1750
1751
1752 if (qemu_name) {
1753 strncpy((char *)sysib.ext_names[0], qemu_name,
1754 sizeof(sysib.ext_names[0]));
1755 } else {
1756 strcpy((char *)sysib.ext_names[0], "KVMguest");
1757 }
1758
1759 memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid));
1760
1761 s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
1762}
1763
1764static int handle_stsi(S390CPU *cpu)
1765{
1766 CPUState *cs = CPU(cpu);
1767 struct kvm_run *run = cs->kvm_run;
1768
1769 switch (run->s390_stsi.fc) {
1770 case 3:
1771 if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
1772 return 0;
1773 }
1774
1775 insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
1776 return 0;
1777 default:
1778 return 0;
1779 }
1780}
1781
1782static int kvm_arch_handle_debug_exit(S390CPU *cpu)
1783{
1784 CPUState *cs = CPU(cpu);
1785 struct kvm_run *run = cs->kvm_run;
1786
1787 int ret = 0;
1788 struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
1789
1790 switch (arch_info->type) {
1791 case KVM_HW_WP_WRITE:
1792 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1793 cs->watchpoint_hit = &hw_watchpoint;
1794 hw_watchpoint.vaddr = arch_info->addr;
1795 hw_watchpoint.flags = BP_MEM_WRITE;
1796 ret = EXCP_DEBUG;
1797 }
1798 break;
1799 case KVM_HW_BP:
1800 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1801 ret = EXCP_DEBUG;
1802 }
1803 break;
1804 case KVM_SINGLESTEP:
1805 if (cs->singlestep_enabled) {
1806 ret = EXCP_DEBUG;
1807 }
1808 break;
1809 default:
1810 ret = -ENOSYS;
1811 }
1812
1813 return ret;
1814}
1815
1816int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
1817{
1818 S390CPU *cpu = S390_CPU(cs);
1819 int ret = 0;
1820
1821 qemu_mutex_lock_iothread();
1822
1823 kvm_cpu_synchronize_state(cs);
1824
1825 switch (run->exit_reason) {
1826 case KVM_EXIT_S390_SIEIC:
1827 ret = handle_intercept(cpu);
1828 break;
1829 case KVM_EXIT_S390_RESET:
1830 s390_ipl_reset_request(cs, S390_RESET_REIPL);
1831 break;
1832 case KVM_EXIT_S390_TSCH:
1833 ret = handle_tsch(cpu);
1834 break;
1835 case KVM_EXIT_S390_STSI:
1836 ret = handle_stsi(cpu);
1837 break;
1838 case KVM_EXIT_DEBUG:
1839 ret = kvm_arch_handle_debug_exit(cpu);
1840 break;
1841 default:
1842 fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
1843 break;
1844 }
1845 qemu_mutex_unlock_iothread();
1846
1847 if (ret == 0) {
1848 ret = EXCP_INTERRUPT;
1849 }
1850 return ret;
1851}
1852
1853bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
1854{
1855 return true;
1856}
1857
1858void kvm_s390_enable_css_support(S390CPU *cpu)
1859{
1860 int r;
1861
1862
1863 r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
1864 assert(r == 0);
1865}
1866
1867void kvm_arch_init_irq_routing(KVMState *s)
1868{
1869
1870
1871
1872
1873
1874 if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
1875 kvm_gsi_routing_allowed = true;
1876 kvm_halt_in_kernel_allowed = false;
1877 }
1878}
1879
1880int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
1881 int vq, bool assign)
1882{
1883 struct kvm_ioeventfd kick = {
1884 .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
1885 KVM_IOEVENTFD_FLAG_DATAMATCH,
1886 .fd = event_notifier_get_fd(notifier),
1887 .datamatch = vq,
1888 .addr = sch,
1889 .len = 8,
1890 };
1891 if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
1892 return -ENOSYS;
1893 }
1894 if (!assign) {
1895 kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
1896 }
1897 return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
1898}
1899
1900int kvm_s390_get_ri(void)
1901{
1902 return cap_ri;
1903}
1904
1905int kvm_s390_get_gs(void)
1906{
1907 return cap_gs;
1908}
1909
1910int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
1911{
1912 struct kvm_mp_state mp_state = {};
1913 int ret;
1914
1915
1916 if (CPU(cpu)->kvm_state == NULL) {
1917 return 0;
1918 }
1919
1920 switch (cpu_state) {
1921 case S390_CPU_STATE_STOPPED:
1922 mp_state.mp_state = KVM_MP_STATE_STOPPED;
1923 break;
1924 case S390_CPU_STATE_CHECK_STOP:
1925 mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
1926 break;
1927 case S390_CPU_STATE_OPERATING:
1928 mp_state.mp_state = KVM_MP_STATE_OPERATING;
1929 break;
1930 case S390_CPU_STATE_LOAD:
1931 mp_state.mp_state = KVM_MP_STATE_LOAD;
1932 break;
1933 default:
1934 error_report("Requested CPU state is not a valid S390 CPU state: %u",
1935 cpu_state);
1936 exit(1);
1937 }
1938
1939 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
1940 if (ret) {
1941 trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
1942 strerror(-ret));
1943 }
1944
1945 return ret;
1946}
1947
1948void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
1949{
1950 struct kvm_s390_irq_state irq_state = {
1951 .buf = (uint64_t) cpu->irqstate,
1952 .len = VCPU_IRQ_BUF_SIZE,
1953 };
1954 CPUState *cs = CPU(cpu);
1955 int32_t bytes;
1956
1957 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
1958 return;
1959 }
1960
1961 bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
1962 if (bytes < 0) {
1963 cpu->irqstate_saved_size = 0;
1964 error_report("Migration of interrupt state failed");
1965 return;
1966 }
1967
1968 cpu->irqstate_saved_size = bytes;
1969}
1970
1971int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
1972{
1973 CPUState *cs = CPU(cpu);
1974 struct kvm_s390_irq_state irq_state = {
1975 .buf = (uint64_t) cpu->irqstate,
1976 .len = cpu->irqstate_saved_size,
1977 };
1978 int r;
1979
1980 if (cpu->irqstate_saved_size == 0) {
1981 return 0;
1982 }
1983
1984 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
1985 return -ENOSYS;
1986 }
1987
1988 r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
1989 if (r) {
1990 error_report("Setting interrupt state failed %d", r);
1991 }
1992 return r;
1993}
1994
1995int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
1996 uint64_t address, uint32_t data, PCIDevice *dev)
1997{
1998 S390PCIBusDevice *pbdev;
1999 uint32_t vec = data & ZPCI_MSI_VEC_MASK;
2000
2001 if (!dev) {
2002 DPRINTF("add_msi_route no pci device\n");
2003 return -ENODEV;
2004 }
2005
2006 pbdev = s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev)->id);
2007 if (!pbdev) {
2008 DPRINTF("add_msi_route no zpci device\n");
2009 return -ENODEV;
2010 }
2011
2012 route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
2013 route->flags = 0;
2014 route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
2015 route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
2016 route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
2017 route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset + vec;
2018 route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
2019 return 0;
2020}
2021
2022int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
2023 int vector, PCIDevice *dev)
2024{
2025 return 0;
2026}
2027
2028int kvm_arch_release_virq_post(int virq)
2029{
2030 return 0;
2031}
2032
2033int kvm_arch_msi_data_to_gsi(uint32_t data)
2034{
2035 abort();
2036}
2037
2038static int query_cpu_subfunc(S390FeatBitmap features)
2039{
2040 struct kvm_s390_vm_cpu_subfunc prop;
2041 struct kvm_device_attr attr = {
2042 .group = KVM_S390_VM_CPU_MODEL,
2043 .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC,
2044 .addr = (uint64_t) &prop,
2045 };
2046 int rc;
2047
2048 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2049 if (rc) {
2050 return rc;
2051 }
2052
2053
2054
2055
2056
2057 s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2058 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2059 s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2060 }
2061 if (test_bit(S390_FEAT_MSA, features)) {
2062 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2063 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2064 s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2065 s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2066 s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2067 }
2068 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2069 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2070 }
2071 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2072 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2073 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2074 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2075 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2076 }
2077 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2078 s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2079 }
2080 if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
2081 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
2082 }
2083 return 0;
2084}
2085
2086static int configure_cpu_subfunc(const S390FeatBitmap features)
2087{
2088 struct kvm_s390_vm_cpu_subfunc prop = {};
2089 struct kvm_device_attr attr = {
2090 .group = KVM_S390_VM_CPU_MODEL,
2091 .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC,
2092 .addr = (uint64_t) &prop,
2093 };
2094
2095 if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2096 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) {
2097
2098 return 0;
2099 }
2100
2101 s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2102 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2103 s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2104 }
2105 if (test_bit(S390_FEAT_MSA, features)) {
2106 s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2107 s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2108 s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2109 s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2110 s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2111 }
2112 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2113 s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2114 }
2115 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2116 s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2117 s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2118 s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2119 s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2120 }
2121 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2122 s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2123 }
2124 if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
2125 s390_fill_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
2126 }
2127 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2128}
2129
2130static int kvm_to_feat[][2] = {
2131 { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP },
2132 { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 },
2133 { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO },
2134 { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF },
2135 { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE },
2136 { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS },
2137 { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB },
2138 { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI },
2139 { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS },
2140 { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY },
2141 { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA },
2142 { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
2143 { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
2144 { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS},
2145};
2146
2147static int query_cpu_feat(S390FeatBitmap features)
2148{
2149 struct kvm_s390_vm_cpu_feat prop;
2150 struct kvm_device_attr attr = {
2151 .group = KVM_S390_VM_CPU_MODEL,
2152 .attr = KVM_S390_VM_CPU_MACHINE_FEAT,
2153 .addr = (uint64_t) &prop,
2154 };
2155 int rc;
2156 int i;
2157
2158 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2159 if (rc) {
2160 return rc;
2161 }
2162
2163 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2164 if (test_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat)) {
2165 set_bit(kvm_to_feat[i][1], features);
2166 }
2167 }
2168 return 0;
2169}
2170
2171static int configure_cpu_feat(const S390FeatBitmap features)
2172{
2173 struct kvm_s390_vm_cpu_feat prop = {};
2174 struct kvm_device_attr attr = {
2175 .group = KVM_S390_VM_CPU_MODEL,
2176 .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT,
2177 .addr = (uint64_t) &prop,
2178 };
2179 int i;
2180
2181 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2182 if (test_bit(kvm_to_feat[i][1], features)) {
2183 set_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat);
2184 }
2185 }
2186 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2187}
2188
2189bool kvm_s390_cpu_models_supported(void)
2190{
2191 if (!cpu_model_allowed()) {
2192
2193 return false;
2194 }
2195 return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2196 KVM_S390_VM_CPU_MACHINE) &&
2197 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2198 KVM_S390_VM_CPU_PROCESSOR) &&
2199 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2200 KVM_S390_VM_CPU_MACHINE_FEAT) &&
2201 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2202 KVM_S390_VM_CPU_PROCESSOR_FEAT) &&
2203 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2204 KVM_S390_VM_CPU_MACHINE_SUBFUNC);
2205}
2206
2207void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
2208{
2209 struct kvm_s390_vm_cpu_machine prop = {};
2210 struct kvm_device_attr attr = {
2211 .group = KVM_S390_VM_CPU_MODEL,
2212 .attr = KVM_S390_VM_CPU_MACHINE,
2213 .addr = (uint64_t) &prop,
2214 };
2215 uint16_t unblocked_ibc = 0, cpu_type = 0;
2216 int rc;
2217
2218 memset(model, 0, sizeof(*model));
2219
2220 if (!kvm_s390_cpu_models_supported()) {
2221 error_setg(errp, "KVM doesn't support CPU models");
2222 return;
2223 }
2224
2225
2226 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2227 if (rc) {
2228 error_setg(errp, "KVM: Error querying host CPU model: %d", rc);
2229 return;
2230 }
2231
2232 cpu_type = cpuid_type(prop.cpuid);
2233 if (has_ibc(prop.ibc)) {
2234 model->lowest_ibc = lowest_ibc(prop.ibc);
2235 unblocked_ibc = unblocked_ibc(prop.ibc);
2236 }
2237 model->cpu_id = cpuid_id(prop.cpuid);
2238 model->cpu_id_format = cpuid_format(prop.cpuid);
2239 model->cpu_ver = 0xff;
2240
2241
2242 s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL,
2243 (uint8_t *) prop.fac_mask);
2244
2245 if (test_bit(S390_FEAT_STFLE, model->features)) {
2246 set_bit(S390_FEAT_DAT_ENH_2, model->features);
2247 }
2248
2249 rc = query_cpu_feat(model->features);
2250 if (rc) {
2251 error_setg(errp, "KVM: Error querying CPU features: %d", rc);
2252 return;
2253 }
2254
2255 rc = query_cpu_subfunc(model->features);
2256 if (rc) {
2257 error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc);
2258 return;
2259 }
2260
2261
2262 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH, model->features)) {
2263 clear_bit(S390_FEAT_PTFF_QSIE, model->features);
2264 clear_bit(S390_FEAT_PTFF_QTOUE, model->features);
2265 clear_bit(S390_FEAT_PTFF_STOE, model->features);
2266 clear_bit(S390_FEAT_PTFF_STOUE, model->features);
2267 }
2268
2269
2270 if (kvm_s390_cmma_available()) {
2271 set_bit(S390_FEAT_CMM, model->features);
2272 } else {
2273
2274 clear_bit(S390_FEAT_CMM_NT, model->features);
2275 }
2276
2277
2278 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_BPB)) {
2279 clear_bit(S390_FEAT_BPB, model->features);
2280 }
2281
2282
2283 if (pci_available) {
2284 set_bit(S390_FEAT_ZPCI, model->features);
2285 }
2286 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
2287
2288 if (s390_known_cpu_type(cpu_type)) {
2289
2290 model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc),
2291 ibc_ec_ga(unblocked_ibc), NULL);
2292 } else {
2293
2294 model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc),
2295 ibc_ec_ga(unblocked_ibc),
2296 model->features);
2297 }
2298 if (!model->def) {
2299 error_setg(errp, "KVM: host CPU model could not be identified");
2300 return;
2301 }
2302
2303 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO,
2304 KVM_S390_VM_CRYPTO_ENABLE_APIE)) {
2305 set_bit(S390_FEAT_AP, model->features);
2306 }
2307
2308 bitmap_and(model->features, model->features, model->def->full_feat,
2309 S390_FEAT_MAX);
2310}
2311
2312static void kvm_s390_configure_apie(bool interpret)
2313{
2314 uint64_t attr = interpret ? KVM_S390_VM_CRYPTO_ENABLE_APIE :
2315 KVM_S390_VM_CRYPTO_DISABLE_APIE;
2316
2317 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
2318 kvm_s390_set_attr(attr);
2319 }
2320}
2321
2322void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp)
2323{
2324 struct kvm_s390_vm_cpu_processor prop = {
2325 .fac_list = { 0 },
2326 };
2327 struct kvm_device_attr attr = {
2328 .group = KVM_S390_VM_CPU_MODEL,
2329 .attr = KVM_S390_VM_CPU_PROCESSOR,
2330 .addr = (uint64_t) &prop,
2331 };
2332 int rc;
2333
2334 if (!model) {
2335
2336 if (kvm_s390_cmma_available()) {
2337 kvm_s390_enable_cmma();
2338 }
2339 return;
2340 }
2341 if (!kvm_s390_cpu_models_supported()) {
2342 error_setg(errp, "KVM doesn't support CPU models");
2343 return;
2344 }
2345 prop.cpuid = s390_cpuid_from_cpu_model(model);
2346 prop.ibc = s390_ibc_from_cpu_model(model);
2347
2348 s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL,
2349 (uint8_t *) prop.fac_list);
2350 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2351 if (rc) {
2352 error_setg(errp, "KVM: Error configuring the CPU model: %d", rc);
2353 return;
2354 }
2355
2356 rc = configure_cpu_feat(model->features);
2357 if (rc) {
2358 error_setg(errp, "KVM: Error configuring CPU features: %d", rc);
2359 return;
2360 }
2361
2362 rc = configure_cpu_subfunc(model->features);
2363 if (rc) {
2364 error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc);
2365 return;
2366 }
2367
2368 if (test_bit(S390_FEAT_CMM, model->features)) {
2369 kvm_s390_enable_cmma();
2370 }
2371
2372 if (test_bit(S390_FEAT_AP, model->features)) {
2373 kvm_s390_configure_apie(true);
2374 }
2375}
2376
2377void kvm_s390_restart_interrupt(S390CPU *cpu)
2378{
2379 struct kvm_s390_irq irq = {
2380 .type = KVM_S390_RESTART,
2381 };
2382
2383 kvm_s390_vcpu_interrupt(cpu, &irq);
2384}
2385
2386void kvm_s390_stop_interrupt(S390CPU *cpu)
2387{
2388 struct kvm_s390_irq irq = {
2389 .type = KVM_S390_SIGP_STOP,
2390 };
2391
2392 kvm_s390_vcpu_interrupt(cpu, &irq);
2393}
2394