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21#include "qemu/osdep.h"
22#include <sys/ioctl.h>
23
24#include <linux/kvm.h>
25#include <asm/ptrace.h>
26
27#include "qemu-common.h"
28#include "cpu.h"
29#include "internal.h"
30#include "kvm_s390x.h"
31#include "sysemu/kvm_int.h"
32#include "qemu/cutils.h"
33#include "qapi/error.h"
34#include "qemu/error-report.h"
35#include "qemu/timer.h"
36#include "qemu/units.h"
37#include "qemu/main-loop.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 "sysemu/runstate.h"
43#include "sysemu/device_tree.h"
44#include "exec/gdbstub.h"
45#include "exec/ram_addr.h"
46#include "trace.h"
47#include "hw/s390x/s390-pci-inst.h"
48#include "hw/s390x/s390-pci-bus.h"
49#include "hw/s390x/ipl.h"
50#include "hw/s390x/ebcdic.h"
51#include "exec/memattrs.h"
52#include "hw/s390x/s390-virtio-ccw.h"
53#include "hw/s390x/s390-virtio-hcall.h"
54#include "hw/s390x/pv.h"
55
56#ifndef DEBUG_KVM
57#define DEBUG_KVM 0
58#endif
59
60#define DPRINTF(fmt, ...) do { \
61 if (DEBUG_KVM) { \
62 fprintf(stderr, fmt, ## __VA_ARGS__); \
63 } \
64} while (0)
65
66#define kvm_vm_check_mem_attr(s, attr) \
67 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
68
69#define IPA0_DIAG 0x8300
70#define IPA0_SIGP 0xae00
71#define IPA0_B2 0xb200
72#define IPA0_B9 0xb900
73#define IPA0_EB 0xeb00
74#define IPA0_E3 0xe300
75
76#define PRIV_B2_SCLP_CALL 0x20
77#define PRIV_B2_CSCH 0x30
78#define PRIV_B2_HSCH 0x31
79#define PRIV_B2_MSCH 0x32
80#define PRIV_B2_SSCH 0x33
81#define PRIV_B2_STSCH 0x34
82#define PRIV_B2_TSCH 0x35
83#define PRIV_B2_TPI 0x36
84#define PRIV_B2_SAL 0x37
85#define PRIV_B2_RSCH 0x38
86#define PRIV_B2_STCRW 0x39
87#define PRIV_B2_STCPS 0x3a
88#define PRIV_B2_RCHP 0x3b
89#define PRIV_B2_SCHM 0x3c
90#define PRIV_B2_CHSC 0x5f
91#define PRIV_B2_SIGA 0x74
92#define PRIV_B2_XSCH 0x76
93
94#define PRIV_EB_SQBS 0x8a
95#define PRIV_EB_PCISTB 0xd0
96#define PRIV_EB_SIC 0xd1
97
98#define PRIV_B9_EQBS 0x9c
99#define PRIV_B9_CLP 0xa0
100#define PRIV_B9_PCISTG 0xd0
101#define PRIV_B9_PCILG 0xd2
102#define PRIV_B9_RPCIT 0xd3
103
104#define PRIV_E3_MPCIFC 0xd0
105#define PRIV_E3_STPCIFC 0xd4
106
107#define DIAG_TIMEREVENT 0x288
108#define DIAG_IPL 0x308
109#define DIAG_SET_CONTROL_PROGRAM_CODES 0x318
110#define DIAG_KVM_HYPERCALL 0x500
111#define DIAG_KVM_BREAKPOINT 0x501
112
113#define ICPT_INSTRUCTION 0x04
114#define ICPT_PROGRAM 0x08
115#define ICPT_EXT_INT 0x14
116#define ICPT_WAITPSW 0x1c
117#define ICPT_SOFT_INTERCEPT 0x24
118#define ICPT_CPU_STOP 0x28
119#define ICPT_OPEREXC 0x2c
120#define ICPT_IO 0x40
121#define ICPT_PV_INSTR 0x68
122#define ICPT_PV_INSTR_NOTIFICATION 0x6c
123
124#define NR_LOCAL_IRQS 32
125
126
127
128
129#define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
130 (max_cpus + NR_LOCAL_IRQS))
131
132
133
134
135
136
137
138#define KVM_SLOT_MAX_BYTES (4UL * TiB)
139
140static CPUWatchpoint hw_watchpoint;
141
142
143
144
145static struct kvm_hw_breakpoint *hw_breakpoints;
146static int nb_hw_breakpoints;
147
148const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
149 KVM_CAP_LAST_INFO
150};
151
152static int cap_sync_regs;
153static int cap_async_pf;
154static int cap_mem_op;
155static int cap_s390_irq;
156static int cap_ri;
157static int cap_gs;
158static int cap_hpage_1m;
159static int cap_vcpu_resets;
160static int cap_protected;
161
162static int active_cmma;
163
164static int kvm_s390_query_mem_limit(uint64_t *memory_limit)
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) memory_limit,
170 };
171
172 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
173}
174
175int kvm_s390_set_mem_limit(uint64_t new_limit, uint64_t *hw_limit)
176{
177 int rc;
178
179 struct kvm_device_attr attr = {
180 .group = KVM_S390_VM_MEM_CTRL,
181 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
182 .addr = (uint64_t) &new_limit,
183 };
184
185 if (!kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_LIMIT_SIZE)) {
186 return 0;
187 }
188
189 rc = kvm_s390_query_mem_limit(hw_limit);
190 if (rc) {
191 return rc;
192 } else if (*hw_limit < new_limit) {
193 return -E2BIG;
194 }
195
196 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
197}
198
199int kvm_s390_cmma_active(void)
200{
201 return active_cmma;
202}
203
204static bool kvm_s390_cmma_available(void)
205{
206 static bool initialized, value;
207
208 if (!initialized) {
209 initialized = true;
210 value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) &&
211 kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA);
212 }
213 return value;
214}
215
216void kvm_s390_cmma_reset(void)
217{
218 int rc;
219 struct kvm_device_attr attr = {
220 .group = KVM_S390_VM_MEM_CTRL,
221 .attr = KVM_S390_VM_MEM_CLR_CMMA,
222 };
223
224 if (!kvm_s390_cmma_active()) {
225 return;
226 }
227
228 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
229 trace_kvm_clear_cmma(rc);
230}
231
232static void kvm_s390_enable_cmma(void)
233{
234 int rc;
235 struct kvm_device_attr attr = {
236 .group = KVM_S390_VM_MEM_CTRL,
237 .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
238 };
239
240 if (cap_hpage_1m) {
241 warn_report("CMM will not be enabled because it is not "
242 "compatible with huge memory backings.");
243 return;
244 }
245 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
246 active_cmma = !rc;
247 trace_kvm_enable_cmma(rc);
248}
249
250static void kvm_s390_set_attr(uint64_t attr)
251{
252 struct kvm_device_attr attribute = {
253 .group = KVM_S390_VM_CRYPTO,
254 .attr = attr,
255 };
256
257 int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
258
259 if (ret) {
260 error_report("Failed to set crypto device attribute %lu: %s",
261 attr, strerror(-ret));
262 }
263}
264
265static void kvm_s390_init_aes_kw(void)
266{
267 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
268
269 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
270 NULL)) {
271 attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
272 }
273
274 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
275 kvm_s390_set_attr(attr);
276 }
277}
278
279static void kvm_s390_init_dea_kw(void)
280{
281 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
282
283 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
284 NULL)) {
285 attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
286 }
287
288 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
289 kvm_s390_set_attr(attr);
290 }
291}
292
293void kvm_s390_crypto_reset(void)
294{
295 if (s390_has_feat(S390_FEAT_MSA_EXT_3)) {
296 kvm_s390_init_aes_kw();
297 kvm_s390_init_dea_kw();
298 }
299}
300
301void kvm_s390_set_max_pagesize(uint64_t pagesize, Error **errp)
302{
303 if (pagesize == 4 * KiB) {
304 return;
305 }
306
307 if (!hpage_1m_allowed()) {
308 error_setg(errp, "This QEMU machine does not support huge page "
309 "mappings");
310 return;
311 }
312
313 if (pagesize != 1 * MiB) {
314 error_setg(errp, "Memory backing with 2G pages was specified, "
315 "but KVM does not support this memory backing");
316 return;
317 }
318
319 if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_HPAGE_1M, 0)) {
320 error_setg(errp, "Memory backing with 1M pages was specified, "
321 "but KVM does not support this memory backing");
322 return;
323 }
324
325 cap_hpage_1m = 1;
326}
327
328int kvm_s390_get_hpage_1m(void)
329{
330 return cap_hpage_1m;
331}
332
333static void ccw_machine_class_foreach(ObjectClass *oc, void *opaque)
334{
335 MachineClass *mc = MACHINE_CLASS(oc);
336
337 mc->default_cpu_type = S390_CPU_TYPE_NAME("host");
338}
339
340int kvm_arch_init(MachineState *ms, KVMState *s)
341{
342 object_class_foreach(ccw_machine_class_foreach, TYPE_S390_CCW_MACHINE,
343 false, NULL);
344
345 if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
346 error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - "
347 "please use kernel 3.15 or newer");
348 return -1;
349 }
350 if (!kvm_check_extension(s, KVM_CAP_S390_COW)) {
351 error_report("KVM is missing capability KVM_CAP_S390_COW - "
352 "unsupported environment");
353 return -1;
354 }
355
356 cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
357 cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
358 cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
359 cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
360 cap_vcpu_resets = kvm_check_extension(s, KVM_CAP_S390_VCPU_RESETS);
361 cap_protected = kvm_check_extension(s, KVM_CAP_S390_PROTECTED);
362
363 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
364 kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
365 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
366 if (ri_allowed()) {
367 if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
368 cap_ri = 1;
369 }
370 }
371 if (cpu_model_allowed()) {
372 if (kvm_vm_enable_cap(s, KVM_CAP_S390_GS, 0) == 0) {
373 cap_gs = 1;
374 }
375 }
376
377
378
379
380
381
382
383 if (cpu_model_allowed() && kvm_kernel_irqchip_allowed() &&
384 kvm_check_extension(s, KVM_CAP_S390_AIS_MIGRATION)) {
385 kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0);
386 }
387
388 kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES);
389 return 0;
390}
391
392int kvm_arch_irqchip_create(KVMState *s)
393{
394 return 0;
395}
396
397unsigned long kvm_arch_vcpu_id(CPUState *cpu)
398{
399 return cpu->cpu_index;
400}
401
402int kvm_arch_init_vcpu(CPUState *cs)
403{
404 unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
405 S390CPU *cpu = S390_CPU(cs);
406 kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
407 cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus));
408 return 0;
409}
410
411int kvm_arch_destroy_vcpu(CPUState *cs)
412{
413 S390CPU *cpu = S390_CPU(cs);
414
415 g_free(cpu->irqstate);
416 cpu->irqstate = NULL;
417
418 return 0;
419}
420
421static void kvm_s390_reset_vcpu(S390CPU *cpu, unsigned long type)
422{
423 CPUState *cs = CPU(cpu);
424
425
426
427
428
429
430
431
432 if (kvm_vcpu_ioctl(cs, type)) {
433 error_report("CPU reset failed on CPU %i type %lx",
434 cs->cpu_index, type);
435 }
436}
437
438void kvm_s390_reset_vcpu_initial(S390CPU *cpu)
439{
440 kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET);
441}
442
443void kvm_s390_reset_vcpu_clear(S390CPU *cpu)
444{
445 if (cap_vcpu_resets) {
446 kvm_s390_reset_vcpu(cpu, KVM_S390_CLEAR_RESET);
447 } else {
448 kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET);
449 }
450}
451
452void kvm_s390_reset_vcpu_normal(S390CPU *cpu)
453{
454 if (cap_vcpu_resets) {
455 kvm_s390_reset_vcpu(cpu, KVM_S390_NORMAL_RESET);
456 }
457}
458
459static int can_sync_regs(CPUState *cs, int regs)
460{
461 return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
462}
463
464int kvm_arch_put_registers(CPUState *cs, int level)
465{
466 S390CPU *cpu = S390_CPU(cs);
467 CPUS390XState *env = &cpu->env;
468 struct kvm_sregs sregs;
469 struct kvm_regs regs;
470 struct kvm_fpu fpu = {};
471 int r;
472 int i;
473
474
475 cs->kvm_run->psw_addr = env->psw.addr;
476 cs->kvm_run->psw_mask = env->psw.mask;
477
478 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
479 for (i = 0; i < 16; i++) {
480 cs->kvm_run->s.regs.gprs[i] = env->regs[i];
481 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
482 }
483 } else {
484 for (i = 0; i < 16; i++) {
485 regs.gprs[i] = env->regs[i];
486 }
487 r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
488 if (r < 0) {
489 return r;
490 }
491 }
492
493 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
494 for (i = 0; i < 32; i++) {
495 cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0];
496 cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1];
497 }
498 cs->kvm_run->s.regs.fpc = env->fpc;
499 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
500 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
501 for (i = 0; i < 16; i++) {
502 cs->kvm_run->s.regs.fprs[i] = *get_freg(env, i);
503 }
504 cs->kvm_run->s.regs.fpc = env->fpc;
505 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
506 } else {
507
508 for (i = 0; i < 16; i++) {
509 fpu.fprs[i] = *get_freg(env, i);
510 }
511 fpu.fpc = env->fpc;
512
513 r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
514 if (r < 0) {
515 return r;
516 }
517 }
518
519
520 if (level == KVM_PUT_RUNTIME_STATE) {
521 return 0;
522 }
523
524 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
525 cs->kvm_run->s.regs.cputm = env->cputm;
526 cs->kvm_run->s.regs.ckc = env->ckc;
527 cs->kvm_run->s.regs.todpr = env->todpr;
528 cs->kvm_run->s.regs.gbea = env->gbea;
529 cs->kvm_run->s.regs.pp = env->pp;
530 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
531 } else {
532
533
534
535
536
537 kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
538 kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
539 kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
540 kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
541 kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
542 }
543
544 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
545 memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64);
546 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB;
547 }
548
549
550 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
551 cs->kvm_run->s.regs.pft = env->pfault_token;
552 cs->kvm_run->s.regs.pfs = env->pfault_select;
553 cs->kvm_run->s.regs.pfc = env->pfault_compare;
554 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
555 } else if (cap_async_pf) {
556 r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
557 if (r < 0) {
558 return r;
559 }
560 r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
561 if (r < 0) {
562 return r;
563 }
564 r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
565 if (r < 0) {
566 return r;
567 }
568 }
569
570
571 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
572 for (i = 0; i < 16; i++) {
573 cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
574 cs->kvm_run->s.regs.crs[i] = env->cregs[i];
575 }
576 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
577 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
578 } else {
579 for (i = 0; i < 16; i++) {
580 sregs.acrs[i] = env->aregs[i];
581 sregs.crs[i] = env->cregs[i];
582 }
583 r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
584 if (r < 0) {
585 return r;
586 }
587 }
588
589 if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
590 memcpy(cs->kvm_run->s.regs.gscb, env->gscb, 32);
591 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GSCB;
592 }
593
594 if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
595 cs->kvm_run->s.regs.bpbc = env->bpbc;
596 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_BPBC;
597 }
598
599 if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
600 cs->kvm_run->s.regs.etoken = env->etoken;
601 cs->kvm_run->s.regs.etoken_extension = env->etoken_extension;
602 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ETOKEN;
603 }
604
605 if (can_sync_regs(cs, KVM_SYNC_DIAG318)) {
606 cs->kvm_run->s.regs.diag318 = env->diag318_info;
607 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
608 }
609
610
611 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
612 cs->kvm_run->s.regs.prefix = env->psa;
613 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
614 } else {
615
616 }
617 return 0;
618}
619
620int kvm_arch_get_registers(CPUState *cs)
621{
622 S390CPU *cpu = S390_CPU(cs);
623 CPUS390XState *env = &cpu->env;
624 struct kvm_sregs sregs;
625 struct kvm_regs regs;
626 struct kvm_fpu fpu;
627 int i, r;
628
629
630 env->psw.addr = cs->kvm_run->psw_addr;
631 env->psw.mask = cs->kvm_run->psw_mask;
632
633
634 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
635 for (i = 0; i < 16; i++) {
636 env->regs[i] = cs->kvm_run->s.regs.gprs[i];
637 }
638 } else {
639 r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
640 if (r < 0) {
641 return r;
642 }
643 for (i = 0; i < 16; i++) {
644 env->regs[i] = regs.gprs[i];
645 }
646 }
647
648
649 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
650 for (i = 0; i < 16; i++) {
651 env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
652 env->cregs[i] = cs->kvm_run->s.regs.crs[i];
653 }
654 } else {
655 r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
656 if (r < 0) {
657 return r;
658 }
659 for (i = 0; i < 16; i++) {
660 env->aregs[i] = sregs.acrs[i];
661 env->cregs[i] = sregs.crs[i];
662 }
663 }
664
665
666 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
667 for (i = 0; i < 32; i++) {
668 env->vregs[i][0] = cs->kvm_run->s.regs.vrs[i][0];
669 env->vregs[i][1] = cs->kvm_run->s.regs.vrs[i][1];
670 }
671 env->fpc = cs->kvm_run->s.regs.fpc;
672 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
673 for (i = 0; i < 16; i++) {
674 *get_freg(env, i) = cs->kvm_run->s.regs.fprs[i];
675 }
676 env->fpc = cs->kvm_run->s.regs.fpc;
677 } else {
678 r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
679 if (r < 0) {
680 return r;
681 }
682 for (i = 0; i < 16; i++) {
683 *get_freg(env, i) = fpu.fprs[i];
684 }
685 env->fpc = fpu.fpc;
686 }
687
688
689 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
690 env->psa = cs->kvm_run->s.regs.prefix;
691 }
692
693 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
694 env->cputm = cs->kvm_run->s.regs.cputm;
695 env->ckc = cs->kvm_run->s.regs.ckc;
696 env->todpr = cs->kvm_run->s.regs.todpr;
697 env->gbea = cs->kvm_run->s.regs.gbea;
698 env->pp = cs->kvm_run->s.regs.pp;
699 } else {
700
701
702
703
704
705 kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
706 kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
707 kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
708 kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
709 kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
710 }
711
712 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
713 memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64);
714 }
715
716 if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
717 memcpy(env->gscb, cs->kvm_run->s.regs.gscb, 32);
718 }
719
720 if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
721 env->bpbc = cs->kvm_run->s.regs.bpbc;
722 }
723
724 if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
725 env->etoken = cs->kvm_run->s.regs.etoken;
726 env->etoken_extension = cs->kvm_run->s.regs.etoken_extension;
727 }
728
729
730 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
731 env->pfault_token = cs->kvm_run->s.regs.pft;
732 env->pfault_select = cs->kvm_run->s.regs.pfs;
733 env->pfault_compare = cs->kvm_run->s.regs.pfc;
734 } else if (cap_async_pf) {
735 r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
736 if (r < 0) {
737 return r;
738 }
739 r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
740 if (r < 0) {
741 return r;
742 }
743 r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
744 if (r < 0) {
745 return r;
746 }
747 }
748
749 if (can_sync_regs(cs, KVM_SYNC_DIAG318)) {
750 env->diag318_info = cs->kvm_run->s.regs.diag318;
751 }
752
753 return 0;
754}
755
756int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
757{
758 int r;
759 struct kvm_device_attr attr = {
760 .group = KVM_S390_VM_TOD,
761 .attr = KVM_S390_VM_TOD_LOW,
762 .addr = (uint64_t)tod_low,
763 };
764
765 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
766 if (r) {
767 return r;
768 }
769
770 attr.attr = KVM_S390_VM_TOD_HIGH;
771 attr.addr = (uint64_t)tod_high;
772 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
773}
774
775int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
776{
777 int r;
778 struct kvm_s390_vm_tod_clock gtod;
779 struct kvm_device_attr attr = {
780 .group = KVM_S390_VM_TOD,
781 .attr = KVM_S390_VM_TOD_EXT,
782 .addr = (uint64_t)>od,
783 };
784
785 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
786 *tod_high = gtod.epoch_idx;
787 *tod_low = gtod.tod;
788
789 return r;
790}
791
792int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_low)
793{
794 int r;
795 struct kvm_device_attr attr = {
796 .group = KVM_S390_VM_TOD,
797 .attr = KVM_S390_VM_TOD_LOW,
798 .addr = (uint64_t)&tod_low,
799 };
800
801 r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
802 if (r) {
803 return r;
804 }
805
806 attr.attr = KVM_S390_VM_TOD_HIGH;
807 attr.addr = (uint64_t)&tod_high;
808 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
809}
810
811int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low)
812{
813 struct kvm_s390_vm_tod_clock gtod = {
814 .epoch_idx = tod_high,
815 .tod = tod_low,
816 };
817 struct kvm_device_attr attr = {
818 .group = KVM_S390_VM_TOD,
819 .attr = KVM_S390_VM_TOD_EXT,
820 .addr = (uint64_t)>od,
821 };
822
823 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
824}
825
826
827
828
829
830
831
832
833
834
835
836
837
838int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
839 int len, bool is_write)
840{
841 struct kvm_s390_mem_op mem_op = {
842 .gaddr = addr,
843 .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
844 .size = len,
845 .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
846 : KVM_S390_MEMOP_LOGICAL_READ,
847 .buf = (uint64_t)hostbuf,
848 .ar = ar,
849 };
850 int ret;
851
852 if (!cap_mem_op) {
853 return -ENOSYS;
854 }
855 if (!hostbuf) {
856 mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
857 }
858
859 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
860 if (ret < 0) {
861 warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
862 }
863 return ret;
864}
865
866int kvm_s390_mem_op_pv(S390CPU *cpu, uint64_t offset, void *hostbuf,
867 int len, bool is_write)
868{
869 struct kvm_s390_mem_op mem_op = {
870 .sida_offset = offset,
871 .size = len,
872 .op = is_write ? KVM_S390_MEMOP_SIDA_WRITE
873 : KVM_S390_MEMOP_SIDA_READ,
874 .buf = (uint64_t)hostbuf,
875 };
876 int ret;
877
878 if (!cap_mem_op || !cap_protected) {
879 return -ENOSYS;
880 }
881
882 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
883 if (ret < 0) {
884 error_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
885 abort();
886 }
887 return ret;
888}
889
890static uint8_t const *sw_bp_inst;
891static uint8_t sw_bp_ilen;
892
893static void determine_sw_breakpoint_instr(void)
894{
895
896 static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
897
898 static const uint8_t instr_0x0000[] = {0x00, 0x00};
899
900 if (sw_bp_inst) {
901 return;
902 }
903 if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) {
904 sw_bp_inst = diag_501;
905 sw_bp_ilen = sizeof(diag_501);
906 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
907 } else {
908 sw_bp_inst = instr_0x0000;
909 sw_bp_ilen = sizeof(instr_0x0000);
910 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
911 }
912}
913
914int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
915{
916 determine_sw_breakpoint_instr();
917
918 if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
919 sw_bp_ilen, 0) ||
920 cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) {
921 return -EINVAL;
922 }
923 return 0;
924}
925
926int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
927{
928 uint8_t t[MAX_ILEN];
929
930 if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) {
931 return -EINVAL;
932 } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) {
933 return -EINVAL;
934 } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
935 sw_bp_ilen, 1)) {
936 return -EINVAL;
937 }
938
939 return 0;
940}
941
942static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
943 int len, int type)
944{
945 int n;
946
947 for (n = 0; n < nb_hw_breakpoints; n++) {
948 if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
949 (hw_breakpoints[n].len == len || len == -1)) {
950 return &hw_breakpoints[n];
951 }
952 }
953
954 return NULL;
955}
956
957static int insert_hw_breakpoint(target_ulong addr, int len, int type)
958{
959 int size;
960
961 if (find_hw_breakpoint(addr, len, type)) {
962 return -EEXIST;
963 }
964
965 size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
966
967 if (!hw_breakpoints) {
968 nb_hw_breakpoints = 0;
969 hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
970 } else {
971 hw_breakpoints =
972 (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
973 }
974
975 if (!hw_breakpoints) {
976 nb_hw_breakpoints = 0;
977 return -ENOMEM;
978 }
979
980 hw_breakpoints[nb_hw_breakpoints].addr = addr;
981 hw_breakpoints[nb_hw_breakpoints].len = len;
982 hw_breakpoints[nb_hw_breakpoints].type = type;
983
984 nb_hw_breakpoints++;
985
986 return 0;
987}
988
989int kvm_arch_insert_hw_breakpoint(target_ulong addr,
990 target_ulong len, int type)
991{
992 switch (type) {
993 case GDB_BREAKPOINT_HW:
994 type = KVM_HW_BP;
995 break;
996 case GDB_WATCHPOINT_WRITE:
997 if (len < 1) {
998 return -EINVAL;
999 }
1000 type = KVM_HW_WP_WRITE;
1001 break;
1002 default:
1003 return -ENOSYS;
1004 }
1005 return insert_hw_breakpoint(addr, len, type);
1006}
1007
1008int kvm_arch_remove_hw_breakpoint(target_ulong addr,
1009 target_ulong len, int type)
1010{
1011 int size;
1012 struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
1013
1014 if (bp == NULL) {
1015 return -ENOENT;
1016 }
1017
1018 nb_hw_breakpoints--;
1019 if (nb_hw_breakpoints > 0) {
1020
1021
1022
1023
1024 if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
1025 *bp = hw_breakpoints[nb_hw_breakpoints];
1026 }
1027 size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
1028 hw_breakpoints =
1029 (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
1030 } else {
1031 g_free(hw_breakpoints);
1032 hw_breakpoints = NULL;
1033 }
1034
1035 return 0;
1036}
1037
1038void kvm_arch_remove_all_hw_breakpoints(void)
1039{
1040 nb_hw_breakpoints = 0;
1041 g_free(hw_breakpoints);
1042 hw_breakpoints = NULL;
1043}
1044
1045void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
1046{
1047 int i;
1048
1049 if (nb_hw_breakpoints > 0) {
1050 dbg->arch.nr_hw_bp = nb_hw_breakpoints;
1051 dbg->arch.hw_bp = hw_breakpoints;
1052
1053 for (i = 0; i < nb_hw_breakpoints; ++i) {
1054 hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
1055 hw_breakpoints[i].addr);
1056 }
1057 dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
1058 } else {
1059 dbg->arch.nr_hw_bp = 0;
1060 dbg->arch.hw_bp = NULL;
1061 }
1062}
1063
1064void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
1065{
1066}
1067
1068MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
1069{
1070 return MEMTXATTRS_UNSPECIFIED;
1071}
1072
1073int kvm_arch_process_async_events(CPUState *cs)
1074{
1075 return cs->halted;
1076}
1077
1078static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
1079 struct kvm_s390_interrupt *interrupt)
1080{
1081 int r = 0;
1082
1083 interrupt->type = irq->type;
1084 switch (irq->type) {
1085 case KVM_S390_INT_VIRTIO:
1086 interrupt->parm = irq->u.ext.ext_params;
1087
1088 case KVM_S390_INT_PFAULT_INIT:
1089 case KVM_S390_INT_PFAULT_DONE:
1090 interrupt->parm64 = irq->u.ext.ext_params2;
1091 break;
1092 case KVM_S390_PROGRAM_INT:
1093 interrupt->parm = irq->u.pgm.code;
1094 break;
1095 case KVM_S390_SIGP_SET_PREFIX:
1096 interrupt->parm = irq->u.prefix.address;
1097 break;
1098 case KVM_S390_INT_SERVICE:
1099 interrupt->parm = irq->u.ext.ext_params;
1100 break;
1101 case KVM_S390_MCHK:
1102 interrupt->parm = irq->u.mchk.cr14;
1103 interrupt->parm64 = irq->u.mchk.mcic;
1104 break;
1105 case KVM_S390_INT_EXTERNAL_CALL:
1106 interrupt->parm = irq->u.extcall.code;
1107 break;
1108 case KVM_S390_INT_EMERGENCY:
1109 interrupt->parm = irq->u.emerg.code;
1110 break;
1111 case KVM_S390_SIGP_STOP:
1112 case KVM_S390_RESTART:
1113 break;
1114 case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
1115 interrupt->parm = irq->u.io.subchannel_id << 16;
1116 interrupt->parm |= irq->u.io.subchannel_nr;
1117 interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
1118 interrupt->parm64 |= irq->u.io.io_int_word;
1119 break;
1120 default:
1121 r = -EINVAL;
1122 break;
1123 }
1124 return r;
1125}
1126
1127static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
1128{
1129 struct kvm_s390_interrupt kvmint = {};
1130 int r;
1131
1132 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
1133 if (r < 0) {
1134 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
1135 exit(1);
1136 }
1137
1138 r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
1139 if (r < 0) {
1140 fprintf(stderr, "KVM failed to inject interrupt\n");
1141 exit(1);
1142 }
1143}
1144
1145void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
1146{
1147 CPUState *cs = CPU(cpu);
1148 int r;
1149
1150 if (cap_s390_irq) {
1151 r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
1152 if (!r) {
1153 return;
1154 }
1155 error_report("KVM failed to inject interrupt %llx", irq->type);
1156 exit(1);
1157 }
1158
1159 inject_vcpu_irq_legacy(cs, irq);
1160}
1161
1162void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq *irq)
1163{
1164 struct kvm_s390_interrupt kvmint = {};
1165 int r;
1166
1167 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
1168 if (r < 0) {
1169 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
1170 exit(1);
1171 }
1172
1173 r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
1174 if (r < 0) {
1175 fprintf(stderr, "KVM failed to inject interrupt\n");
1176 exit(1);
1177 }
1178}
1179
1180void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code)
1181{
1182 struct kvm_s390_irq irq = {
1183 .type = KVM_S390_PROGRAM_INT,
1184 .u.pgm.code = code,
1185 };
1186 qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n",
1187 cpu->env.psw.addr);
1188 kvm_s390_vcpu_interrupt(cpu, &irq);
1189}
1190
1191void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
1192{
1193 struct kvm_s390_irq irq = {
1194 .type = KVM_S390_PROGRAM_INT,
1195 .u.pgm.code = code,
1196 .u.pgm.trans_exc_code = te_code,
1197 .u.pgm.exc_access_id = te_code & 3,
1198 };
1199
1200 kvm_s390_vcpu_interrupt(cpu, &irq);
1201}
1202
1203static void kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
1204 uint16_t ipbh0)
1205{
1206 CPUS390XState *env = &cpu->env;
1207 uint64_t sccb;
1208 uint32_t code;
1209 int r;
1210
1211 sccb = env->regs[ipbh0 & 0xf];
1212 code = env->regs[(ipbh0 & 0xf0) >> 4];
1213
1214 switch (run->s390_sieic.icptcode) {
1215 case ICPT_PV_INSTR_NOTIFICATION:
1216 g_assert(s390_is_pv());
1217
1218 error_report("unexpected SCLP PV notification");
1219 exit(1);
1220 break;
1221 case ICPT_PV_INSTR:
1222 g_assert(s390_is_pv());
1223 sclp_service_call_protected(env, sccb, code);
1224
1225 break;
1226 case ICPT_INSTRUCTION:
1227 g_assert(!s390_is_pv());
1228 r = sclp_service_call(env, sccb, code);
1229 if (r < 0) {
1230 kvm_s390_program_interrupt(cpu, -r);
1231 return;
1232 }
1233 setcc(cpu, r);
1234 }
1235}
1236
1237static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1238{
1239 CPUS390XState *env = &cpu->env;
1240 int rc = 0;
1241 uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
1242
1243 switch (ipa1) {
1244 case PRIV_B2_XSCH:
1245 ioinst_handle_xsch(cpu, env->regs[1], RA_IGNORED);
1246 break;
1247 case PRIV_B2_CSCH:
1248 ioinst_handle_csch(cpu, env->regs[1], RA_IGNORED);
1249 break;
1250 case PRIV_B2_HSCH:
1251 ioinst_handle_hsch(cpu, env->regs[1], RA_IGNORED);
1252 break;
1253 case PRIV_B2_MSCH:
1254 ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1255 break;
1256 case PRIV_B2_SSCH:
1257 ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1258 break;
1259 case PRIV_B2_STCRW:
1260 ioinst_handle_stcrw(cpu, run->s390_sieic.ipb, RA_IGNORED);
1261 break;
1262 case PRIV_B2_STSCH:
1263 ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1264 break;
1265 case PRIV_B2_TSCH:
1266
1267 fprintf(stderr, "Spurious tsch intercept\n");
1268 break;
1269 case PRIV_B2_CHSC:
1270 ioinst_handle_chsc(cpu, run->s390_sieic.ipb, RA_IGNORED);
1271 break;
1272 case PRIV_B2_TPI:
1273
1274 fprintf(stderr, "Spurious tpi intercept\n");
1275 break;
1276 case PRIV_B2_SCHM:
1277 ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
1278 run->s390_sieic.ipb, RA_IGNORED);
1279 break;
1280 case PRIV_B2_RSCH:
1281 ioinst_handle_rsch(cpu, env->regs[1], RA_IGNORED);
1282 break;
1283 case PRIV_B2_RCHP:
1284 ioinst_handle_rchp(cpu, env->regs[1], RA_IGNORED);
1285 break;
1286 case PRIV_B2_STCPS:
1287
1288 break;
1289 case PRIV_B2_SAL:
1290 ioinst_handle_sal(cpu, env->regs[1], RA_IGNORED);
1291 break;
1292 case PRIV_B2_SIGA:
1293
1294 setcc(cpu, 3);
1295 break;
1296 case PRIV_B2_SCLP_CALL:
1297 kvm_sclp_service_call(cpu, run, ipbh0);
1298 break;
1299 default:
1300 rc = -1;
1301 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
1302 break;
1303 }
1304
1305 return rc;
1306}
1307
1308static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
1309 uint8_t *ar)
1310{
1311 CPUS390XState *env = &cpu->env;
1312 uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
1313 uint32_t base2 = run->s390_sieic.ipb >> 28;
1314 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1315 ((run->s390_sieic.ipb & 0xff00) << 4);
1316
1317 if (disp2 & 0x80000) {
1318 disp2 += 0xfff00000;
1319 }
1320 if (ar) {
1321 *ar = base2;
1322 }
1323
1324 return (base2 ? env->regs[base2] : 0) +
1325 (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
1326}
1327
1328static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
1329 uint8_t *ar)
1330{
1331 CPUS390XState *env = &cpu->env;
1332 uint32_t base2 = run->s390_sieic.ipb >> 28;
1333 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1334 ((run->s390_sieic.ipb & 0xff00) << 4);
1335
1336 if (disp2 & 0x80000) {
1337 disp2 += 0xfff00000;
1338 }
1339 if (ar) {
1340 *ar = base2;
1341 }
1342
1343 return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
1344}
1345
1346static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
1347{
1348 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1349
1350 if (s390_has_feat(S390_FEAT_ZPCI)) {
1351 return clp_service_call(cpu, r2, RA_IGNORED);
1352 } else {
1353 return -1;
1354 }
1355}
1356
1357static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
1358{
1359 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1360 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1361
1362 if (s390_has_feat(S390_FEAT_ZPCI)) {
1363 return pcilg_service_call(cpu, r1, r2, RA_IGNORED);
1364 } else {
1365 return -1;
1366 }
1367}
1368
1369static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
1370{
1371 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1372 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1373
1374 if (s390_has_feat(S390_FEAT_ZPCI)) {
1375 return pcistg_service_call(cpu, r1, r2, RA_IGNORED);
1376 } else {
1377 return -1;
1378 }
1379}
1380
1381static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1382{
1383 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1384 uint64_t fiba;
1385 uint8_t ar;
1386
1387 if (s390_has_feat(S390_FEAT_ZPCI)) {
1388 fiba = get_base_disp_rxy(cpu, run, &ar);
1389
1390 return stpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
1391 } else {
1392 return -1;
1393 }
1394}
1395
1396static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
1397{
1398 CPUS390XState *env = &cpu->env;
1399 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1400 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1401 uint8_t isc;
1402 uint16_t mode;
1403 int r;
1404
1405 mode = env->regs[r1] & 0xffff;
1406 isc = (env->regs[r3] >> 27) & 0x7;
1407 r = css_do_sic(env, isc, mode);
1408 if (r) {
1409 kvm_s390_program_interrupt(cpu, -r);
1410 }
1411
1412 return 0;
1413}
1414
1415static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
1416{
1417 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1418 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1419
1420 if (s390_has_feat(S390_FEAT_ZPCI)) {
1421 return rpcit_service_call(cpu, r1, r2, RA_IGNORED);
1422 } else {
1423 return -1;
1424 }
1425}
1426
1427static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
1428{
1429 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1430 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1431 uint64_t gaddr;
1432 uint8_t ar;
1433
1434 if (s390_has_feat(S390_FEAT_ZPCI)) {
1435 gaddr = get_base_disp_rsy(cpu, run, &ar);
1436
1437 return pcistb_service_call(cpu, r1, r3, gaddr, ar, RA_IGNORED);
1438 } else {
1439 return -1;
1440 }
1441}
1442
1443static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1444{
1445 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1446 uint64_t fiba;
1447 uint8_t ar;
1448
1449 if (s390_has_feat(S390_FEAT_ZPCI)) {
1450 fiba = get_base_disp_rxy(cpu, run, &ar);
1451
1452 return mpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
1453 } else {
1454 return -1;
1455 }
1456}
1457
1458static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1459{
1460 int r = 0;
1461
1462 switch (ipa1) {
1463 case PRIV_B9_CLP:
1464 r = kvm_clp_service_call(cpu, run);
1465 break;
1466 case PRIV_B9_PCISTG:
1467 r = kvm_pcistg_service_call(cpu, run);
1468 break;
1469 case PRIV_B9_PCILG:
1470 r = kvm_pcilg_service_call(cpu, run);
1471 break;
1472 case PRIV_B9_RPCIT:
1473 r = kvm_rpcit_service_call(cpu, run);
1474 break;
1475 case PRIV_B9_EQBS:
1476
1477 r = -1;
1478 break;
1479 default:
1480 r = -1;
1481 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
1482 break;
1483 }
1484
1485 return r;
1486}
1487
1488static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1489{
1490 int r = 0;
1491
1492 switch (ipbl) {
1493 case PRIV_EB_PCISTB:
1494 r = kvm_pcistb_service_call(cpu, run);
1495 break;
1496 case PRIV_EB_SIC:
1497 r = kvm_sic_service_call(cpu, run);
1498 break;
1499 case PRIV_EB_SQBS:
1500
1501 r = -1;
1502 break;
1503 default:
1504 r = -1;
1505 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
1506 break;
1507 }
1508
1509 return r;
1510}
1511
1512static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1513{
1514 int r = 0;
1515
1516 switch (ipbl) {
1517 case PRIV_E3_MPCIFC:
1518 r = kvm_mpcifc_service_call(cpu, run);
1519 break;
1520 case PRIV_E3_STPCIFC:
1521 r = kvm_stpcifc_service_call(cpu, run);
1522 break;
1523 default:
1524 r = -1;
1525 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
1526 break;
1527 }
1528
1529 return r;
1530}
1531
1532static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
1533{
1534 CPUS390XState *env = &cpu->env;
1535 int ret;
1536
1537 ret = s390_virtio_hypercall(env);
1538 if (ret == -EINVAL) {
1539 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1540 return 0;
1541 }
1542
1543 return ret;
1544}
1545
1546static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
1547{
1548 uint64_t r1, r3;
1549 int rc;
1550
1551 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1552 r3 = run->s390_sieic.ipa & 0x000f;
1553 rc = handle_diag_288(&cpu->env, r1, r3);
1554 if (rc) {
1555 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1556 }
1557}
1558
1559static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
1560{
1561 uint64_t r1, r3;
1562
1563 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1564 r3 = run->s390_sieic.ipa & 0x000f;
1565 handle_diag_308(&cpu->env, r1, r3, RA_IGNORED);
1566}
1567
1568static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
1569{
1570 CPUS390XState *env = &cpu->env;
1571 unsigned long pc;
1572
1573 pc = env->psw.addr - sw_bp_ilen;
1574 if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
1575 env->psw.addr = pc;
1576 return EXCP_DEBUG;
1577 }
1578
1579 return -ENOENT;
1580}
1581
1582void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info)
1583{
1584 CPUS390XState *env = &S390_CPU(cs)->env;
1585
1586
1587 if (s390_has_feat(S390_FEAT_DIAG_318)) {
1588 env->diag318_info = diag318_info;
1589 cs->kvm_run->s.regs.diag318 = diag318_info;
1590 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
1591 }
1592}
1593
1594static void handle_diag_318(S390CPU *cpu, struct kvm_run *run)
1595{
1596 uint64_t reg = (run->s390_sieic.ipa & 0x00f0) >> 4;
1597 uint64_t diag318_info = run->s.regs.gprs[reg];
1598 CPUState *t;
1599
1600
1601
1602
1603
1604 if (!s390_has_feat(S390_FEAT_DIAG_318)) {
1605 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1606 return;
1607 }
1608
1609 CPU_FOREACH(t) {
1610 run_on_cpu(t, s390_do_cpu_set_diag318,
1611 RUN_ON_CPU_HOST_ULONG(diag318_info));
1612 }
1613}
1614
1615#define DIAG_KVM_CODE_MASK 0x000000000000ffff
1616
1617static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
1618{
1619 int r = 0;
1620 uint16_t func_code;
1621
1622
1623
1624
1625
1626 func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
1627 switch (func_code) {
1628 case DIAG_TIMEREVENT:
1629 kvm_handle_diag_288(cpu, run);
1630 break;
1631 case DIAG_IPL:
1632 kvm_handle_diag_308(cpu, run);
1633 break;
1634 case DIAG_SET_CONTROL_PROGRAM_CODES:
1635 handle_diag_318(cpu, run);
1636 break;
1637 case DIAG_KVM_HYPERCALL:
1638 r = handle_hypercall(cpu, run);
1639 break;
1640 case DIAG_KVM_BREAKPOINT:
1641 r = handle_sw_breakpoint(cpu, run);
1642 break;
1643 default:
1644 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
1645 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1646 break;
1647 }
1648
1649 return r;
1650}
1651
1652static int kvm_s390_handle_sigp(S390CPU *cpu, uint8_t ipa1, uint32_t ipb)
1653{
1654 CPUS390XState *env = &cpu->env;
1655 const uint8_t r1 = ipa1 >> 4;
1656 const uint8_t r3 = ipa1 & 0x0f;
1657 int ret;
1658 uint8_t order;
1659
1660
1661 order = decode_basedisp_rs(env, ipb, NULL) & SIGP_ORDER_MASK;
1662
1663 ret = handle_sigp(env, order, r1, r3);
1664 setcc(cpu, ret);
1665 return 0;
1666}
1667
1668static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
1669{
1670 unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
1671 uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
1672 int r = -1;
1673
1674 DPRINTF("handle_instruction 0x%x 0x%x\n",
1675 run->s390_sieic.ipa, run->s390_sieic.ipb);
1676 switch (ipa0) {
1677 case IPA0_B2:
1678 r = handle_b2(cpu, run, ipa1);
1679 break;
1680 case IPA0_B9:
1681 r = handle_b9(cpu, run, ipa1);
1682 break;
1683 case IPA0_EB:
1684 r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
1685 break;
1686 case IPA0_E3:
1687 r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
1688 break;
1689 case IPA0_DIAG:
1690 r = handle_diag(cpu, run, run->s390_sieic.ipb);
1691 break;
1692 case IPA0_SIGP:
1693 r = kvm_s390_handle_sigp(cpu, ipa1, run->s390_sieic.ipb);
1694 break;
1695 }
1696
1697 if (r < 0) {
1698 r = 0;
1699 kvm_s390_program_interrupt(cpu, PGM_OPERATION);
1700 }
1701
1702 return r;
1703}
1704
1705static void unmanageable_intercept(S390CPU *cpu, S390CrashReason reason,
1706 int pswoffset)
1707{
1708 CPUState *cs = CPU(cpu);
1709
1710 s390_cpu_halt(cpu);
1711 cpu->env.crash_reason = reason;
1712 qemu_system_guest_panicked(cpu_get_crash_info(cs));
1713}
1714
1715
1716static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
1717{
1718 CPUState *cs = CPU(cpu);
1719 PSW oldpsw, newpsw;
1720
1721 newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
1722 offsetof(LowCore, program_new_psw));
1723 newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
1724 offsetof(LowCore, program_new_psw) + 8);
1725 oldpsw.mask = run->psw_mask;
1726 oldpsw.addr = run->psw_addr;
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736 if (oldpsw.addr - newpsw.addr <= 6 &&
1737 !(newpsw.mask & PSW_MASK_WAIT) &&
1738 !(oldpsw.mask & PSW_MASK_PSTATE) &&
1739 (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&
1740 (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) {
1741 unmanageable_intercept(cpu, S390_CRASH_REASON_OPINT_LOOP,
1742 offsetof(LowCore, program_new_psw));
1743 return EXCP_HALTED;
1744 }
1745 return 0;
1746}
1747
1748static int handle_intercept(S390CPU *cpu)
1749{
1750 CPUState *cs = CPU(cpu);
1751 struct kvm_run *run = cs->kvm_run;
1752 int icpt_code = run->s390_sieic.icptcode;
1753 int r = 0;
1754
1755 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code, (long)run->psw_addr);
1756 switch (icpt_code) {
1757 case ICPT_INSTRUCTION:
1758 case ICPT_PV_INSTR:
1759 case ICPT_PV_INSTR_NOTIFICATION:
1760 r = handle_instruction(cpu, run);
1761 break;
1762 case ICPT_PROGRAM:
1763 unmanageable_intercept(cpu, S390_CRASH_REASON_PGMINT_LOOP,
1764 offsetof(LowCore, program_new_psw));
1765 r = EXCP_HALTED;
1766 break;
1767 case ICPT_EXT_INT:
1768 unmanageable_intercept(cpu, S390_CRASH_REASON_EXTINT_LOOP,
1769 offsetof(LowCore, external_new_psw));
1770 r = EXCP_HALTED;
1771 break;
1772 case ICPT_WAITPSW:
1773
1774 s390_handle_wait(cpu);
1775 r = EXCP_HALTED;
1776 break;
1777 case ICPT_CPU_STOP:
1778 do_stop_interrupt(&cpu->env);
1779 r = EXCP_HALTED;
1780 break;
1781 case ICPT_OPEREXC:
1782
1783 r = handle_sw_breakpoint(cpu, run);
1784 if (r == -ENOENT) {
1785
1786 r = handle_oper_loop(cpu, run);
1787 if (r == 0) {
1788 kvm_s390_program_interrupt(cpu, PGM_OPERATION);
1789 }
1790 }
1791 break;
1792 case ICPT_SOFT_INTERCEPT:
1793 fprintf(stderr, "KVM unimplemented icpt SOFT\n");
1794 exit(1);
1795 break;
1796 case ICPT_IO:
1797 fprintf(stderr, "KVM unimplemented icpt IO\n");
1798 exit(1);
1799 break;
1800 default:
1801 fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
1802 exit(1);
1803 break;
1804 }
1805
1806 return r;
1807}
1808
1809static int handle_tsch(S390CPU *cpu)
1810{
1811 CPUState *cs = CPU(cpu);
1812 struct kvm_run *run = cs->kvm_run;
1813 int ret;
1814
1815 ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb,
1816 RA_IGNORED);
1817 if (ret < 0) {
1818
1819
1820
1821
1822 if (run->s390_tsch.dequeued) {
1823 s390_io_interrupt(run->s390_tsch.subchannel_id,
1824 run->s390_tsch.subchannel_nr,
1825 run->s390_tsch.io_int_parm,
1826 run->s390_tsch.io_int_word);
1827 }
1828 ret = 0;
1829 }
1830 return ret;
1831}
1832
1833static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
1834{
1835 const MachineState *ms = MACHINE(qdev_get_machine());
1836 uint16_t conf_cpus = 0, reserved_cpus = 0;
1837 SysIB_322 sysib;
1838 int del, i;
1839
1840 if (s390_is_pv()) {
1841 s390_cpu_pv_mem_read(cpu, 0, &sysib, sizeof(sysib));
1842 } else if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
1843 return;
1844 }
1845
1846 memmove(&sysib.ext_names[1], &sysib.ext_names[0],
1847 sizeof(sysib.ext_names[0]) * (sysib.count - 1));
1848
1849
1850
1851 for (del = 1; del < sysib.count; del++) {
1852 if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
1853 break;
1854 }
1855 }
1856 if (del < sysib.count) {
1857 memset(sysib.ext_names[del], 0,
1858 sizeof(sysib.ext_names[0]) * (sysib.count - del));
1859 }
1860
1861
1862 for (i = 0; i < ms->possible_cpus->len; i++) {
1863 if (ms->possible_cpus->cpus[i].cpu) {
1864 conf_cpus++;
1865 } else {
1866 reserved_cpus++;
1867 }
1868 }
1869 sysib.vm[0].total_cpus = conf_cpus + reserved_cpus;
1870 sysib.vm[0].conf_cpus = conf_cpus;
1871 sysib.vm[0].reserved_cpus = reserved_cpus;
1872
1873
1874 if (qemu_name) {
1875 memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
1876 ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
1877 strlen(qemu_name)));
1878 }
1879 sysib.vm[0].ext_name_encoding = 2;
1880
1881
1882
1883
1884
1885 strpadcpy((char *)sysib.ext_names[0],
1886 sizeof(sysib.ext_names[0]),
1887 qemu_name ?: "KVMguest", '\0');
1888
1889
1890 memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid));
1891
1892 if (s390_is_pv()) {
1893 s390_cpu_pv_mem_write(cpu, 0, &sysib, sizeof(sysib));
1894 } else {
1895 s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
1896 }
1897}
1898
1899static int handle_stsi(S390CPU *cpu)
1900{
1901 CPUState *cs = CPU(cpu);
1902 struct kvm_run *run = cs->kvm_run;
1903
1904 switch (run->s390_stsi.fc) {
1905 case 3:
1906 if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
1907 return 0;
1908 }
1909
1910 insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
1911 return 0;
1912 default:
1913 return 0;
1914 }
1915}
1916
1917static int kvm_arch_handle_debug_exit(S390CPU *cpu)
1918{
1919 CPUState *cs = CPU(cpu);
1920 struct kvm_run *run = cs->kvm_run;
1921
1922 int ret = 0;
1923 struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
1924
1925 switch (arch_info->type) {
1926 case KVM_HW_WP_WRITE:
1927 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1928 cs->watchpoint_hit = &hw_watchpoint;
1929 hw_watchpoint.vaddr = arch_info->addr;
1930 hw_watchpoint.flags = BP_MEM_WRITE;
1931 ret = EXCP_DEBUG;
1932 }
1933 break;
1934 case KVM_HW_BP:
1935 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1936 ret = EXCP_DEBUG;
1937 }
1938 break;
1939 case KVM_SINGLESTEP:
1940 if (cs->singlestep_enabled) {
1941 ret = EXCP_DEBUG;
1942 }
1943 break;
1944 default:
1945 ret = -ENOSYS;
1946 }
1947
1948 return ret;
1949}
1950
1951int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
1952{
1953 S390CPU *cpu = S390_CPU(cs);
1954 int ret = 0;
1955
1956 qemu_mutex_lock_iothread();
1957
1958 kvm_cpu_synchronize_state(cs);
1959
1960 switch (run->exit_reason) {
1961 case KVM_EXIT_S390_SIEIC:
1962 ret = handle_intercept(cpu);
1963 break;
1964 case KVM_EXIT_S390_RESET:
1965 s390_ipl_reset_request(cs, S390_RESET_REIPL);
1966 break;
1967 case KVM_EXIT_S390_TSCH:
1968 ret = handle_tsch(cpu);
1969 break;
1970 case KVM_EXIT_S390_STSI:
1971 ret = handle_stsi(cpu);
1972 break;
1973 case KVM_EXIT_DEBUG:
1974 ret = kvm_arch_handle_debug_exit(cpu);
1975 break;
1976 default:
1977 fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
1978 break;
1979 }
1980 qemu_mutex_unlock_iothread();
1981
1982 if (ret == 0) {
1983 ret = EXCP_INTERRUPT;
1984 }
1985 return ret;
1986}
1987
1988bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
1989{
1990 return true;
1991}
1992
1993void kvm_s390_enable_css_support(S390CPU *cpu)
1994{
1995 int r;
1996
1997
1998 r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
1999 assert(r == 0);
2000}
2001
2002void kvm_arch_init_irq_routing(KVMState *s)
2003{
2004
2005
2006
2007
2008
2009 if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
2010 kvm_gsi_routing_allowed = true;
2011 kvm_halt_in_kernel_allowed = false;
2012 }
2013}
2014
2015int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
2016 int vq, bool assign)
2017{
2018 struct kvm_ioeventfd kick = {
2019 .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
2020 KVM_IOEVENTFD_FLAG_DATAMATCH,
2021 .fd = event_notifier_get_fd(notifier),
2022 .datamatch = vq,
2023 .addr = sch,
2024 .len = 8,
2025 };
2026 trace_kvm_assign_subch_ioeventfd(kick.fd, kick.addr, assign,
2027 kick.datamatch);
2028 if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
2029 return -ENOSYS;
2030 }
2031 if (!assign) {
2032 kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
2033 }
2034 return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
2035}
2036
2037int kvm_s390_get_ri(void)
2038{
2039 return cap_ri;
2040}
2041
2042int kvm_s390_get_gs(void)
2043{
2044 return cap_gs;
2045}
2046
2047int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
2048{
2049 struct kvm_mp_state mp_state = {};
2050 int ret;
2051
2052
2053 if (CPU(cpu)->kvm_state == NULL) {
2054 return 0;
2055 }
2056
2057 switch (cpu_state) {
2058 case S390_CPU_STATE_STOPPED:
2059 mp_state.mp_state = KVM_MP_STATE_STOPPED;
2060 break;
2061 case S390_CPU_STATE_CHECK_STOP:
2062 mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
2063 break;
2064 case S390_CPU_STATE_OPERATING:
2065 mp_state.mp_state = KVM_MP_STATE_OPERATING;
2066 break;
2067 case S390_CPU_STATE_LOAD:
2068 mp_state.mp_state = KVM_MP_STATE_LOAD;
2069 break;
2070 default:
2071 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2072 cpu_state);
2073 exit(1);
2074 }
2075
2076 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
2077 if (ret) {
2078 trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
2079 strerror(-ret));
2080 }
2081
2082 return ret;
2083}
2084
2085void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
2086{
2087 unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
2088 struct kvm_s390_irq_state irq_state = {
2089 .buf = (uint64_t) cpu->irqstate,
2090 .len = VCPU_IRQ_BUF_SIZE(max_cpus),
2091 };
2092 CPUState *cs = CPU(cpu);
2093 int32_t bytes;
2094
2095 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2096 return;
2097 }
2098
2099 bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
2100 if (bytes < 0) {
2101 cpu->irqstate_saved_size = 0;
2102 error_report("Migration of interrupt state failed");
2103 return;
2104 }
2105
2106 cpu->irqstate_saved_size = bytes;
2107}
2108
2109int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
2110{
2111 CPUState *cs = CPU(cpu);
2112 struct kvm_s390_irq_state irq_state = {
2113 .buf = (uint64_t) cpu->irqstate,
2114 .len = cpu->irqstate_saved_size,
2115 };
2116 int r;
2117
2118 if (cpu->irqstate_saved_size == 0) {
2119 return 0;
2120 }
2121
2122 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2123 return -ENOSYS;
2124 }
2125
2126 r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
2127 if (r) {
2128 error_report("Setting interrupt state failed %d", r);
2129 }
2130 return r;
2131}
2132
2133int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
2134 uint64_t address, uint32_t data, PCIDevice *dev)
2135{
2136 S390PCIBusDevice *pbdev;
2137 uint32_t vec = data & ZPCI_MSI_VEC_MASK;
2138
2139 if (!dev) {
2140 DPRINTF("add_msi_route no pci device\n");
2141 return -ENODEV;
2142 }
2143
2144 pbdev = s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev)->id);
2145 if (!pbdev) {
2146 DPRINTF("add_msi_route no zpci device\n");
2147 return -ENODEV;
2148 }
2149
2150 route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
2151 route->flags = 0;
2152 route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
2153 route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
2154 route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
2155 route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset + vec;
2156 route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
2157 return 0;
2158}
2159
2160int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
2161 int vector, PCIDevice *dev)
2162{
2163 return 0;
2164}
2165
2166int kvm_arch_release_virq_post(int virq)
2167{
2168 return 0;
2169}
2170
2171int kvm_arch_msi_data_to_gsi(uint32_t data)
2172{
2173 abort();
2174}
2175
2176static int query_cpu_subfunc(S390FeatBitmap features)
2177{
2178 struct kvm_s390_vm_cpu_subfunc prop = {};
2179 struct kvm_device_attr attr = {
2180 .group = KVM_S390_VM_CPU_MODEL,
2181 .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC,
2182 .addr = (uint64_t) &prop,
2183 };
2184 int rc;
2185
2186 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2187 if (rc) {
2188 return rc;
2189 }
2190
2191
2192
2193
2194
2195 s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2196 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2197 s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2198 }
2199 if (test_bit(S390_FEAT_MSA, features)) {
2200 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2201 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2202 s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2203 s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2204 s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2205 }
2206 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2207 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2208 }
2209 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2210 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2211 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2212 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2213 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2214 }
2215 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2216 s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2217 }
2218 if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
2219 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
2220 }
2221 if (test_bit(S390_FEAT_MSA_EXT_9, features)) {
2222 s390_add_from_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa);
2223 }
2224 if (test_bit(S390_FEAT_ESORT_BASE, features)) {
2225 s390_add_from_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl);
2226 }
2227 if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
2228 s390_add_from_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
2229 }
2230 return 0;
2231}
2232
2233static int configure_cpu_subfunc(const S390FeatBitmap features)
2234{
2235 struct kvm_s390_vm_cpu_subfunc prop = {};
2236 struct kvm_device_attr attr = {
2237 .group = KVM_S390_VM_CPU_MODEL,
2238 .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC,
2239 .addr = (uint64_t) &prop,
2240 };
2241
2242 if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2243 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) {
2244
2245 return 0;
2246 }
2247
2248 s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2249 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2250 s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2251 }
2252 if (test_bit(S390_FEAT_MSA, features)) {
2253 s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2254 s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2255 s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2256 s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2257 s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2258 }
2259 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2260 s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2261 }
2262 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2263 s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2264 s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2265 s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2266 s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2267 }
2268 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2269 s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2270 }
2271 if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
2272 s390_fill_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
2273 }
2274 if (test_bit(S390_FEAT_MSA_EXT_9, features)) {
2275 s390_fill_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa);
2276 }
2277 if (test_bit(S390_FEAT_ESORT_BASE, features)) {
2278 s390_fill_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl);
2279 }
2280 if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
2281 s390_fill_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
2282 }
2283 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2284}
2285
2286static int kvm_to_feat[][2] = {
2287 { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP },
2288 { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 },
2289 { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO },
2290 { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF },
2291 { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE },
2292 { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS },
2293 { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB },
2294 { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI },
2295 { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS },
2296 { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY },
2297 { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA },
2298 { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
2299 { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
2300 { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS},
2301};
2302
2303static int query_cpu_feat(S390FeatBitmap features)
2304{
2305 struct kvm_s390_vm_cpu_feat prop = {};
2306 struct kvm_device_attr attr = {
2307 .group = KVM_S390_VM_CPU_MODEL,
2308 .attr = KVM_S390_VM_CPU_MACHINE_FEAT,
2309 .addr = (uint64_t) &prop,
2310 };
2311 int rc;
2312 int i;
2313
2314 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2315 if (rc) {
2316 return rc;
2317 }
2318
2319 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2320 if (test_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat)) {
2321 set_bit(kvm_to_feat[i][1], features);
2322 }
2323 }
2324 return 0;
2325}
2326
2327static int configure_cpu_feat(const S390FeatBitmap features)
2328{
2329 struct kvm_s390_vm_cpu_feat prop = {};
2330 struct kvm_device_attr attr = {
2331 .group = KVM_S390_VM_CPU_MODEL,
2332 .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT,
2333 .addr = (uint64_t) &prop,
2334 };
2335 int i;
2336
2337 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2338 if (test_bit(kvm_to_feat[i][1], features)) {
2339 set_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat);
2340 }
2341 }
2342 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2343}
2344
2345bool kvm_s390_cpu_models_supported(void)
2346{
2347 if (!cpu_model_allowed()) {
2348
2349 return false;
2350 }
2351 return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2352 KVM_S390_VM_CPU_MACHINE) &&
2353 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2354 KVM_S390_VM_CPU_PROCESSOR) &&
2355 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2356 KVM_S390_VM_CPU_MACHINE_FEAT) &&
2357 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2358 KVM_S390_VM_CPU_PROCESSOR_FEAT) &&
2359 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2360 KVM_S390_VM_CPU_MACHINE_SUBFUNC);
2361}
2362
2363void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
2364{
2365 struct kvm_s390_vm_cpu_machine prop = {};
2366 struct kvm_device_attr attr = {
2367 .group = KVM_S390_VM_CPU_MODEL,
2368 .attr = KVM_S390_VM_CPU_MACHINE,
2369 .addr = (uint64_t) &prop,
2370 };
2371 uint16_t unblocked_ibc = 0, cpu_type = 0;
2372 int rc;
2373
2374 memset(model, 0, sizeof(*model));
2375
2376 if (!kvm_s390_cpu_models_supported()) {
2377 error_setg(errp, "KVM doesn't support CPU models");
2378 return;
2379 }
2380
2381
2382 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2383 if (rc) {
2384 error_setg(errp, "KVM: Error querying host CPU model: %d", rc);
2385 return;
2386 }
2387
2388 cpu_type = cpuid_type(prop.cpuid);
2389 if (has_ibc(prop.ibc)) {
2390 model->lowest_ibc = lowest_ibc(prop.ibc);
2391 unblocked_ibc = unblocked_ibc(prop.ibc);
2392 }
2393 model->cpu_id = cpuid_id(prop.cpuid);
2394 model->cpu_id_format = cpuid_format(prop.cpuid);
2395 model->cpu_ver = 0xff;
2396
2397
2398 s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL,
2399 (uint8_t *) prop.fac_mask);
2400
2401 if (test_bit(S390_FEAT_STFLE, model->features)) {
2402 set_bit(S390_FEAT_DAT_ENH_2, model->features);
2403 }
2404
2405 rc = query_cpu_feat(model->features);
2406 if (rc) {
2407 error_setg(errp, "KVM: Error querying CPU features: %d", rc);
2408 return;
2409 }
2410
2411 rc = query_cpu_subfunc(model->features);
2412 if (rc) {
2413 error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc);
2414 return;
2415 }
2416
2417
2418 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH, model->features)) {
2419 clear_bit(S390_FEAT_PTFF_QSIE, model->features);
2420 clear_bit(S390_FEAT_PTFF_QTOUE, model->features);
2421 clear_bit(S390_FEAT_PTFF_STOE, model->features);
2422 clear_bit(S390_FEAT_PTFF_STOUE, model->features);
2423 }
2424
2425
2426 if (kvm_s390_cmma_available()) {
2427 set_bit(S390_FEAT_CMM, model->features);
2428 } else {
2429
2430 clear_bit(S390_FEAT_CMM_NT, model->features);
2431 }
2432
2433
2434 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_BPB)) {
2435 clear_bit(S390_FEAT_BPB, model->features);
2436 }
2437
2438
2439
2440
2441
2442 if (cap_protected) {
2443 set_bit(S390_FEAT_UNPACK, model->features);
2444 }
2445
2446
2447 set_bit(S390_FEAT_ZPCI, model->features);
2448 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
2449
2450 if (s390_known_cpu_type(cpu_type)) {
2451
2452 model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc),
2453 ibc_ec_ga(unblocked_ibc), NULL);
2454 } else {
2455
2456 model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc),
2457 ibc_ec_ga(unblocked_ibc),
2458 model->features);
2459 }
2460 if (!model->def) {
2461 error_setg(errp, "KVM: host CPU model could not be identified");
2462 return;
2463 }
2464
2465 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO,
2466 KVM_S390_VM_CRYPTO_ENABLE_APIE)) {
2467 set_bit(S390_FEAT_AP, model->features);
2468 }
2469
2470
2471
2472
2473
2474
2475 set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB, model->features);
2476
2477 if (kvm_check_extension(kvm_state, KVM_CAP_S390_DIAG318)) {
2478 set_bit(S390_FEAT_DIAG_318, model->features);
2479 }
2480
2481
2482 bitmap_and(model->features, model->features, model->def->full_feat,
2483 S390_FEAT_MAX);
2484}
2485
2486static void kvm_s390_configure_apie(bool interpret)
2487{
2488 uint64_t attr = interpret ? KVM_S390_VM_CRYPTO_ENABLE_APIE :
2489 KVM_S390_VM_CRYPTO_DISABLE_APIE;
2490
2491 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
2492 kvm_s390_set_attr(attr);
2493 }
2494}
2495
2496void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp)
2497{
2498 struct kvm_s390_vm_cpu_processor prop = {
2499 .fac_list = { 0 },
2500 };
2501 struct kvm_device_attr attr = {
2502 .group = KVM_S390_VM_CPU_MODEL,
2503 .attr = KVM_S390_VM_CPU_PROCESSOR,
2504 .addr = (uint64_t) &prop,
2505 };
2506 int rc;
2507
2508 if (!model) {
2509
2510 if (kvm_s390_cmma_available()) {
2511 kvm_s390_enable_cmma();
2512 }
2513 return;
2514 }
2515 if (!kvm_s390_cpu_models_supported()) {
2516 error_setg(errp, "KVM doesn't support CPU models");
2517 return;
2518 }
2519 prop.cpuid = s390_cpuid_from_cpu_model(model);
2520 prop.ibc = s390_ibc_from_cpu_model(model);
2521
2522 s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL,
2523 (uint8_t *) prop.fac_list);
2524 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2525 if (rc) {
2526 error_setg(errp, "KVM: Error configuring the CPU model: %d", rc);
2527 return;
2528 }
2529
2530 rc = configure_cpu_feat(model->features);
2531 if (rc) {
2532 error_setg(errp, "KVM: Error configuring CPU features: %d", rc);
2533 return;
2534 }
2535
2536 rc = configure_cpu_subfunc(model->features);
2537 if (rc) {
2538 error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc);
2539 return;
2540 }
2541
2542 if (test_bit(S390_FEAT_CMM, model->features)) {
2543 kvm_s390_enable_cmma();
2544 }
2545
2546 if (test_bit(S390_FEAT_AP, model->features)) {
2547 kvm_s390_configure_apie(true);
2548 }
2549}
2550
2551void kvm_s390_restart_interrupt(S390CPU *cpu)
2552{
2553 struct kvm_s390_irq irq = {
2554 .type = KVM_S390_RESTART,
2555 };
2556
2557 kvm_s390_vcpu_interrupt(cpu, &irq);
2558}
2559
2560void kvm_s390_stop_interrupt(S390CPU *cpu)
2561{
2562 struct kvm_s390_irq irq = {
2563 .type = KVM_S390_SIGP_STOP,
2564 };
2565
2566 kvm_s390_vcpu_interrupt(cpu, &irq);
2567}
2568
2569bool kvm_arch_cpu_check_are_resettable(void)
2570{
2571 return true;
2572}
2573