iotests/129: Do not check @busy
[qemu.git] / target / s390x / kvm.c
blobdc27fa36c99ada577851b333aee2b24c3e7e3bf5
1 /*
2 * QEMU S390x KVM implementation
4 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
5 * Copyright IBM Corp. 2012
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/osdep.h"
22 #include <sys/ioctl.h>
24 #include <linux/kvm.h>
25 #include <asm/ptrace.h>
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"
56 #ifndef DEBUG_KVM
57 #define DEBUG_KVM 0
58 #endif
60 #define DPRINTF(fmt, ...) do { \
61 if (DEBUG_KVM) { \
62 fprintf(stderr, fmt, ## __VA_ARGS__); \
63 } \
64 } while (0)
66 #define kvm_vm_check_mem_attr(s, attr) \
67 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
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
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
94 #define PRIV_EB_SQBS 0x8a
95 #define PRIV_EB_PCISTB 0xd0
96 #define PRIV_EB_SIC 0xd1
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
104 #define PRIV_E3_MPCIFC 0xd0
105 #define PRIV_E3_STPCIFC 0xd4
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
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
124 #define NR_LOCAL_IRQS 32
126 * Needs to be big enough to contain max_cpus emergency signals
127 * and in addition NR_LOCAL_IRQS interrupts
129 #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
130 (max_cpus + NR_LOCAL_IRQS))
132 * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
133 * as the dirty bitmap must be managed by bitops that take an int as
134 * position indicator. This would end at an unaligned address
135 * (0x7fffff00000). As future variants might provide larger pages
136 * and to make all addresses properly aligned, let us split at 4TB.
138 #define KVM_SLOT_MAX_BYTES (4UL * TiB)
140 static CPUWatchpoint hw_watchpoint;
142 * We don't use a list because this structure is also used to transmit the
143 * hardware breakpoints to the kernel.
145 static struct kvm_hw_breakpoint *hw_breakpoints;
146 static int nb_hw_breakpoints;
148 const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
149 KVM_CAP_LAST_INFO
152 static int cap_sync_regs;
153 static int cap_async_pf;
154 static int cap_mem_op;
155 static int cap_s390_irq;
156 static int cap_ri;
157 static int cap_gs;
158 static int cap_hpage_1m;
159 static int cap_vcpu_resets;
160 static int cap_protected;
162 static int active_cmma;
164 static void *legacy_s390_alloc(size_t size, uint64_t *align, bool shared);
166 static int kvm_s390_query_mem_limit(uint64_t *memory_limit)
168 struct kvm_device_attr attr = {
169 .group = KVM_S390_VM_MEM_CTRL,
170 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
171 .addr = (uint64_t) memory_limit,
174 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
177 int kvm_s390_set_mem_limit(uint64_t new_limit, uint64_t *hw_limit)
179 int rc;
181 struct kvm_device_attr attr = {
182 .group = KVM_S390_VM_MEM_CTRL,
183 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
184 .addr = (uint64_t) &new_limit,
187 if (!kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_LIMIT_SIZE)) {
188 return 0;
191 rc = kvm_s390_query_mem_limit(hw_limit);
192 if (rc) {
193 return rc;
194 } else if (*hw_limit < new_limit) {
195 return -E2BIG;
198 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
201 int kvm_s390_cmma_active(void)
203 return active_cmma;
206 static bool kvm_s390_cmma_available(void)
208 static bool initialized, value;
210 if (!initialized) {
211 initialized = true;
212 value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) &&
213 kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA);
215 return value;
218 void kvm_s390_cmma_reset(void)
220 int rc;
221 struct kvm_device_attr attr = {
222 .group = KVM_S390_VM_MEM_CTRL,
223 .attr = KVM_S390_VM_MEM_CLR_CMMA,
226 if (!kvm_s390_cmma_active()) {
227 return;
230 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
231 trace_kvm_clear_cmma(rc);
234 static void kvm_s390_enable_cmma(void)
236 int rc;
237 struct kvm_device_attr attr = {
238 .group = KVM_S390_VM_MEM_CTRL,
239 .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
242 if (cap_hpage_1m) {
243 warn_report("CMM will not be enabled because it is not "
244 "compatible with huge memory backings.");
245 return;
247 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
248 active_cmma = !rc;
249 trace_kvm_enable_cmma(rc);
252 static void kvm_s390_set_attr(uint64_t attr)
254 struct kvm_device_attr attribute = {
255 .group = KVM_S390_VM_CRYPTO,
256 .attr = attr,
259 int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
261 if (ret) {
262 error_report("Failed to set crypto device attribute %lu: %s",
263 attr, strerror(-ret));
267 static void kvm_s390_init_aes_kw(void)
269 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
271 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
272 NULL)) {
273 attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
276 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
277 kvm_s390_set_attr(attr);
281 static void kvm_s390_init_dea_kw(void)
283 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
285 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
286 NULL)) {
287 attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
290 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
291 kvm_s390_set_attr(attr);
295 void kvm_s390_crypto_reset(void)
297 if (s390_has_feat(S390_FEAT_MSA_EXT_3)) {
298 kvm_s390_init_aes_kw();
299 kvm_s390_init_dea_kw();
303 void kvm_s390_set_max_pagesize(uint64_t pagesize, Error **errp)
305 if (pagesize == 4 * KiB) {
306 return;
309 if (!hpage_1m_allowed()) {
310 error_setg(errp, "This QEMU machine does not support huge page "
311 "mappings");
312 return;
315 if (pagesize != 1 * MiB) {
316 error_setg(errp, "Memory backing with 2G pages was specified, "
317 "but KVM does not support this memory backing");
318 return;
321 if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_HPAGE_1M, 0)) {
322 error_setg(errp, "Memory backing with 1M pages was specified, "
323 "but KVM does not support this memory backing");
324 return;
327 cap_hpage_1m = 1;
330 int kvm_s390_get_hpage_1m(void)
332 return cap_hpage_1m;
335 static void ccw_machine_class_foreach(ObjectClass *oc, void *opaque)
337 MachineClass *mc = MACHINE_CLASS(oc);
339 mc->default_cpu_type = S390_CPU_TYPE_NAME("host");
342 int kvm_arch_init(MachineState *ms, KVMState *s)
344 object_class_foreach(ccw_machine_class_foreach, TYPE_S390_CCW_MACHINE,
345 false, NULL);
347 if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
348 error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - "
349 "please use kernel 3.15 or newer");
350 return -1;
353 cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
354 cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
355 cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
356 cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
357 cap_vcpu_resets = kvm_check_extension(s, KVM_CAP_S390_VCPU_RESETS);
358 cap_protected = kvm_check_extension(s, KVM_CAP_S390_PROTECTED);
360 if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
361 || !kvm_check_extension(s, KVM_CAP_S390_COW)) {
362 phys_mem_set_alloc(legacy_s390_alloc);
365 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
366 kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
367 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
368 if (ri_allowed()) {
369 if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
370 cap_ri = 1;
373 if (cpu_model_allowed()) {
374 if (kvm_vm_enable_cap(s, KVM_CAP_S390_GS, 0) == 0) {
375 cap_gs = 1;
380 * The migration interface for ais was introduced with kernel 4.13
381 * but the capability itself had been active since 4.12. As migration
382 * support is considered necessary, we only try to enable this for
383 * newer machine types if KVM_CAP_S390_AIS_MIGRATION is available.
385 if (cpu_model_allowed() && kvm_kernel_irqchip_allowed() &&
386 kvm_check_extension(s, KVM_CAP_S390_AIS_MIGRATION)) {
387 kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0);
390 kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES);
391 return 0;
394 int kvm_arch_irqchip_create(KVMState *s)
396 return 0;
399 unsigned long kvm_arch_vcpu_id(CPUState *cpu)
401 return cpu->cpu_index;
404 int kvm_arch_init_vcpu(CPUState *cs)
406 unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
407 S390CPU *cpu = S390_CPU(cs);
408 kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
409 cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus));
410 return 0;
413 int kvm_arch_destroy_vcpu(CPUState *cs)
415 S390CPU *cpu = S390_CPU(cs);
417 g_free(cpu->irqstate);
418 cpu->irqstate = NULL;
420 return 0;
423 static void kvm_s390_reset_vcpu(S390CPU *cpu, unsigned long type)
425 CPUState *cs = CPU(cpu);
428 * The reset call is needed here to reset in-kernel vcpu data that
429 * we can't access directly from QEMU (i.e. with older kernels
430 * which don't support sync_regs/ONE_REG). Before this ioctl
431 * cpu_synchronize_state() is called in common kvm code
432 * (kvm-all).
434 if (kvm_vcpu_ioctl(cs, type)) {
435 error_report("CPU reset failed on CPU %i type %lx",
436 cs->cpu_index, type);
440 void kvm_s390_reset_vcpu_initial(S390CPU *cpu)
442 kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET);
445 void kvm_s390_reset_vcpu_clear(S390CPU *cpu)
447 if (cap_vcpu_resets) {
448 kvm_s390_reset_vcpu(cpu, KVM_S390_CLEAR_RESET);
449 } else {
450 kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET);
454 void kvm_s390_reset_vcpu_normal(S390CPU *cpu)
456 if (cap_vcpu_resets) {
457 kvm_s390_reset_vcpu(cpu, KVM_S390_NORMAL_RESET);
461 static int can_sync_regs(CPUState *cs, int regs)
463 return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
466 int kvm_arch_put_registers(CPUState *cs, int level)
468 S390CPU *cpu = S390_CPU(cs);
469 CPUS390XState *env = &cpu->env;
470 struct kvm_sregs sregs;
471 struct kvm_regs regs;
472 struct kvm_fpu fpu = {};
473 int r;
474 int i;
476 /* always save the PSW and the GPRS*/
477 cs->kvm_run->psw_addr = env->psw.addr;
478 cs->kvm_run->psw_mask = env->psw.mask;
480 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
481 for (i = 0; i < 16; i++) {
482 cs->kvm_run->s.regs.gprs[i] = env->regs[i];
483 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
485 } else {
486 for (i = 0; i < 16; i++) {
487 regs.gprs[i] = env->regs[i];
489 r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs);
490 if (r < 0) {
491 return r;
495 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
496 for (i = 0; i < 32; i++) {
497 cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0];
498 cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1];
500 cs->kvm_run->s.regs.fpc = env->fpc;
501 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
502 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
503 for (i = 0; i < 16; i++) {
504 cs->kvm_run->s.regs.fprs[i] = *get_freg(env, i);
506 cs->kvm_run->s.regs.fpc = env->fpc;
507 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
508 } else {
509 /* Floating point */
510 for (i = 0; i < 16; i++) {
511 fpu.fprs[i] = *get_freg(env, i);
513 fpu.fpc = env->fpc;
515 r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
516 if (r < 0) {
517 return r;
521 /* Do we need to save more than that? */
522 if (level == KVM_PUT_RUNTIME_STATE) {
523 return 0;
526 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
527 cs->kvm_run->s.regs.cputm = env->cputm;
528 cs->kvm_run->s.regs.ckc = env->ckc;
529 cs->kvm_run->s.regs.todpr = env->todpr;
530 cs->kvm_run->s.regs.gbea = env->gbea;
531 cs->kvm_run->s.regs.pp = env->pp;
532 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
533 } else {
535 * These ONE_REGS are not protected by a capability. As they are only
536 * necessary for migration we just trace a possible error, but don't
537 * return with an error return code.
539 kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
540 kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
541 kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
542 kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
543 kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
546 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
547 memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64);
548 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB;
551 /* pfault parameters */
552 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
553 cs->kvm_run->s.regs.pft = env->pfault_token;
554 cs->kvm_run->s.regs.pfs = env->pfault_select;
555 cs->kvm_run->s.regs.pfc = env->pfault_compare;
556 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
557 } else if (cap_async_pf) {
558 r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
559 if (r < 0) {
560 return r;
562 r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
563 if (r < 0) {
564 return r;
566 r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
567 if (r < 0) {
568 return r;
572 /* access registers and control registers*/
573 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
574 for (i = 0; i < 16; i++) {
575 cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
576 cs->kvm_run->s.regs.crs[i] = env->cregs[i];
578 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
579 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
580 } else {
581 for (i = 0; i < 16; i++) {
582 sregs.acrs[i] = env->aregs[i];
583 sregs.crs[i] = env->cregs[i];
585 r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
586 if (r < 0) {
587 return r;
591 if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
592 memcpy(cs->kvm_run->s.regs.gscb, env->gscb, 32);
593 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GSCB;
596 if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
597 cs->kvm_run->s.regs.bpbc = env->bpbc;
598 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_BPBC;
601 if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
602 cs->kvm_run->s.regs.etoken = env->etoken;
603 cs->kvm_run->s.regs.etoken_extension = env->etoken_extension;
604 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ETOKEN;
607 if (can_sync_regs(cs, KVM_SYNC_DIAG318)) {
608 cs->kvm_run->s.regs.diag318 = env->diag318_info;
609 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
612 /* Finally the prefix */
613 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
614 cs->kvm_run->s.regs.prefix = env->psa;
615 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
616 } else {
617 /* prefix is only supported via sync regs */
619 return 0;
622 int kvm_arch_get_registers(CPUState *cs)
624 S390CPU *cpu = S390_CPU(cs);
625 CPUS390XState *env = &cpu->env;
626 struct kvm_sregs sregs;
627 struct kvm_regs regs;
628 struct kvm_fpu fpu;
629 int i, r;
631 /* get the PSW */
632 env->psw.addr = cs->kvm_run->psw_addr;
633 env->psw.mask = cs->kvm_run->psw_mask;
635 /* the GPRS */
636 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
637 for (i = 0; i < 16; i++) {
638 env->regs[i] = cs->kvm_run->s.regs.gprs[i];
640 } else {
641 r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
642 if (r < 0) {
643 return r;
645 for (i = 0; i < 16; i++) {
646 env->regs[i] = regs.gprs[i];
650 /* The ACRS and CRS */
651 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
652 for (i = 0; i < 16; i++) {
653 env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
654 env->cregs[i] = cs->kvm_run->s.regs.crs[i];
656 } else {
657 r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
658 if (r < 0) {
659 return r;
661 for (i = 0; i < 16; i++) {
662 env->aregs[i] = sregs.acrs[i];
663 env->cregs[i] = sregs.crs[i];
667 /* Floating point and vector registers */
668 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
669 for (i = 0; i < 32; i++) {
670 env->vregs[i][0] = cs->kvm_run->s.regs.vrs[i][0];
671 env->vregs[i][1] = cs->kvm_run->s.regs.vrs[i][1];
673 env->fpc = cs->kvm_run->s.regs.fpc;
674 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
675 for (i = 0; i < 16; i++) {
676 *get_freg(env, i) = cs->kvm_run->s.regs.fprs[i];
678 env->fpc = cs->kvm_run->s.regs.fpc;
679 } else {
680 r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
681 if (r < 0) {
682 return r;
684 for (i = 0; i < 16; i++) {
685 *get_freg(env, i) = fpu.fprs[i];
687 env->fpc = fpu.fpc;
690 /* The prefix */
691 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
692 env->psa = cs->kvm_run->s.regs.prefix;
695 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
696 env->cputm = cs->kvm_run->s.regs.cputm;
697 env->ckc = cs->kvm_run->s.regs.ckc;
698 env->todpr = cs->kvm_run->s.regs.todpr;
699 env->gbea = cs->kvm_run->s.regs.gbea;
700 env->pp = cs->kvm_run->s.regs.pp;
701 } else {
703 * These ONE_REGS are not protected by a capability. As they are only
704 * necessary for migration we just trace a possible error, but don't
705 * return with an error return code.
707 kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
708 kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
709 kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
710 kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
711 kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
714 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
715 memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64);
718 if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
719 memcpy(env->gscb, cs->kvm_run->s.regs.gscb, 32);
722 if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
723 env->bpbc = cs->kvm_run->s.regs.bpbc;
726 if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
727 env->etoken = cs->kvm_run->s.regs.etoken;
728 env->etoken_extension = cs->kvm_run->s.regs.etoken_extension;
731 /* pfault parameters */
732 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
733 env->pfault_token = cs->kvm_run->s.regs.pft;
734 env->pfault_select = cs->kvm_run->s.regs.pfs;
735 env->pfault_compare = cs->kvm_run->s.regs.pfc;
736 } else if (cap_async_pf) {
737 r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
738 if (r < 0) {
739 return r;
741 r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
742 if (r < 0) {
743 return r;
745 r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
746 if (r < 0) {
747 return r;
751 if (can_sync_regs(cs, KVM_SYNC_DIAG318)) {
752 env->diag318_info = cs->kvm_run->s.regs.diag318;
755 return 0;
758 int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
760 int r;
761 struct kvm_device_attr attr = {
762 .group = KVM_S390_VM_TOD,
763 .attr = KVM_S390_VM_TOD_LOW,
764 .addr = (uint64_t)tod_low,
767 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
768 if (r) {
769 return r;
772 attr.attr = KVM_S390_VM_TOD_HIGH;
773 attr.addr = (uint64_t)tod_high;
774 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
777 int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
779 int r;
780 struct kvm_s390_vm_tod_clock gtod;
781 struct kvm_device_attr attr = {
782 .group = KVM_S390_VM_TOD,
783 .attr = KVM_S390_VM_TOD_EXT,
784 .addr = (uint64_t)&gtod,
787 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
788 *tod_high = gtod.epoch_idx;
789 *tod_low = gtod.tod;
791 return r;
794 int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_low)
796 int r;
797 struct kvm_device_attr attr = {
798 .group = KVM_S390_VM_TOD,
799 .attr = KVM_S390_VM_TOD_LOW,
800 .addr = (uint64_t)&tod_low,
803 r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
804 if (r) {
805 return r;
808 attr.attr = KVM_S390_VM_TOD_HIGH;
809 attr.addr = (uint64_t)&tod_high;
810 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
813 int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low)
815 struct kvm_s390_vm_tod_clock gtod = {
816 .epoch_idx = tod_high,
817 .tod = tod_low,
819 struct kvm_device_attr attr = {
820 .group = KVM_S390_VM_TOD,
821 .attr = KVM_S390_VM_TOD_EXT,
822 .addr = (uint64_t)&gtod,
825 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
829 * kvm_s390_mem_op:
830 * @addr: the logical start address in guest memory
831 * @ar: the access register number
832 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
833 * @len: length that should be transferred
834 * @is_write: true = write, false = read
835 * Returns: 0 on success, non-zero if an exception or error occurred
837 * Use KVM ioctl to read/write from/to guest memory. An access exception
838 * is injected into the vCPU in case of translation errors.
840 int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
841 int len, bool is_write)
843 struct kvm_s390_mem_op mem_op = {
844 .gaddr = addr,
845 .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
846 .size = len,
847 .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
848 : KVM_S390_MEMOP_LOGICAL_READ,
849 .buf = (uint64_t)hostbuf,
850 .ar = ar,
852 int ret;
854 if (!cap_mem_op) {
855 return -ENOSYS;
857 if (!hostbuf) {
858 mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
861 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
862 if (ret < 0) {
863 warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
865 return ret;
868 int kvm_s390_mem_op_pv(S390CPU *cpu, uint64_t offset, void *hostbuf,
869 int len, bool is_write)
871 struct kvm_s390_mem_op mem_op = {
872 .sida_offset = offset,
873 .size = len,
874 .op = is_write ? KVM_S390_MEMOP_SIDA_WRITE
875 : KVM_S390_MEMOP_SIDA_READ,
876 .buf = (uint64_t)hostbuf,
878 int ret;
880 if (!cap_mem_op || !cap_protected) {
881 return -ENOSYS;
884 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
885 if (ret < 0) {
886 error_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
887 abort();
889 return ret;
893 * Legacy layout for s390:
894 * Older S390 KVM requires the topmost vma of the RAM to be
895 * smaller than an system defined value, which is at least 256GB.
896 * Larger systems have larger values. We put the guest between
897 * the end of data segment (system break) and this value. We
898 * use 32GB as a base to have enough room for the system break
899 * to grow. We also have to use MAP parameters that avoid
900 * read-only mapping of guest pages.
902 static void *legacy_s390_alloc(size_t size, uint64_t *align, bool shared)
904 static void *mem;
906 if (mem) {
907 /* we only support one allocation, which is enough for initial ram */
908 return NULL;
911 mem = mmap((void *) 0x800000000ULL, size,
912 PROT_EXEC|PROT_READ|PROT_WRITE,
913 MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
914 if (mem == MAP_FAILED) {
915 mem = NULL;
917 if (mem && align) {
918 *align = QEMU_VMALLOC_ALIGN;
920 return mem;
923 static uint8_t const *sw_bp_inst;
924 static uint8_t sw_bp_ilen;
926 static void determine_sw_breakpoint_instr(void)
928 /* DIAG 501 is used for sw breakpoints with old kernels */
929 static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
930 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
931 static const uint8_t instr_0x0000[] = {0x00, 0x00};
933 if (sw_bp_inst) {
934 return;
936 if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) {
937 sw_bp_inst = diag_501;
938 sw_bp_ilen = sizeof(diag_501);
939 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
940 } else {
941 sw_bp_inst = instr_0x0000;
942 sw_bp_ilen = sizeof(instr_0x0000);
943 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
947 int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
949 determine_sw_breakpoint_instr();
951 if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
952 sw_bp_ilen, 0) ||
953 cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) {
954 return -EINVAL;
956 return 0;
959 int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
961 uint8_t t[MAX_ILEN];
963 if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) {
964 return -EINVAL;
965 } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) {
966 return -EINVAL;
967 } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
968 sw_bp_ilen, 1)) {
969 return -EINVAL;
972 return 0;
975 static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
976 int len, int type)
978 int n;
980 for (n = 0; n < nb_hw_breakpoints; n++) {
981 if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
982 (hw_breakpoints[n].len == len || len == -1)) {
983 return &hw_breakpoints[n];
987 return NULL;
990 static int insert_hw_breakpoint(target_ulong addr, int len, int type)
992 int size;
994 if (find_hw_breakpoint(addr, len, type)) {
995 return -EEXIST;
998 size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
1000 if (!hw_breakpoints) {
1001 nb_hw_breakpoints = 0;
1002 hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
1003 } else {
1004 hw_breakpoints =
1005 (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
1008 if (!hw_breakpoints) {
1009 nb_hw_breakpoints = 0;
1010 return -ENOMEM;
1013 hw_breakpoints[nb_hw_breakpoints].addr = addr;
1014 hw_breakpoints[nb_hw_breakpoints].len = len;
1015 hw_breakpoints[nb_hw_breakpoints].type = type;
1017 nb_hw_breakpoints++;
1019 return 0;
1022 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
1023 target_ulong len, int type)
1025 switch (type) {
1026 case GDB_BREAKPOINT_HW:
1027 type = KVM_HW_BP;
1028 break;
1029 case GDB_WATCHPOINT_WRITE:
1030 if (len < 1) {
1031 return -EINVAL;
1033 type = KVM_HW_WP_WRITE;
1034 break;
1035 default:
1036 return -ENOSYS;
1038 return insert_hw_breakpoint(addr, len, type);
1041 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
1042 target_ulong len, int type)
1044 int size;
1045 struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
1047 if (bp == NULL) {
1048 return -ENOENT;
1051 nb_hw_breakpoints--;
1052 if (nb_hw_breakpoints > 0) {
1054 * In order to trim the array, move the last element to the position to
1055 * be removed - if necessary.
1057 if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
1058 *bp = hw_breakpoints[nb_hw_breakpoints];
1060 size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
1061 hw_breakpoints =
1062 (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
1063 } else {
1064 g_free(hw_breakpoints);
1065 hw_breakpoints = NULL;
1068 return 0;
1071 void kvm_arch_remove_all_hw_breakpoints(void)
1073 nb_hw_breakpoints = 0;
1074 g_free(hw_breakpoints);
1075 hw_breakpoints = NULL;
1078 void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
1080 int i;
1082 if (nb_hw_breakpoints > 0) {
1083 dbg->arch.nr_hw_bp = nb_hw_breakpoints;
1084 dbg->arch.hw_bp = hw_breakpoints;
1086 for (i = 0; i < nb_hw_breakpoints; ++i) {
1087 hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
1088 hw_breakpoints[i].addr);
1090 dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
1091 } else {
1092 dbg->arch.nr_hw_bp = 0;
1093 dbg->arch.hw_bp = NULL;
1097 void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
1101 MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
1103 return MEMTXATTRS_UNSPECIFIED;
1106 int kvm_arch_process_async_events(CPUState *cs)
1108 return cs->halted;
1111 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
1112 struct kvm_s390_interrupt *interrupt)
1114 int r = 0;
1116 interrupt->type = irq->type;
1117 switch (irq->type) {
1118 case KVM_S390_INT_VIRTIO:
1119 interrupt->parm = irq->u.ext.ext_params;
1120 /* fall through */
1121 case KVM_S390_INT_PFAULT_INIT:
1122 case KVM_S390_INT_PFAULT_DONE:
1123 interrupt->parm64 = irq->u.ext.ext_params2;
1124 break;
1125 case KVM_S390_PROGRAM_INT:
1126 interrupt->parm = irq->u.pgm.code;
1127 break;
1128 case KVM_S390_SIGP_SET_PREFIX:
1129 interrupt->parm = irq->u.prefix.address;
1130 break;
1131 case KVM_S390_INT_SERVICE:
1132 interrupt->parm = irq->u.ext.ext_params;
1133 break;
1134 case KVM_S390_MCHK:
1135 interrupt->parm = irq->u.mchk.cr14;
1136 interrupt->parm64 = irq->u.mchk.mcic;
1137 break;
1138 case KVM_S390_INT_EXTERNAL_CALL:
1139 interrupt->parm = irq->u.extcall.code;
1140 break;
1141 case KVM_S390_INT_EMERGENCY:
1142 interrupt->parm = irq->u.emerg.code;
1143 break;
1144 case KVM_S390_SIGP_STOP:
1145 case KVM_S390_RESTART:
1146 break; /* These types have no parameters */
1147 case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
1148 interrupt->parm = irq->u.io.subchannel_id << 16;
1149 interrupt->parm |= irq->u.io.subchannel_nr;
1150 interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
1151 interrupt->parm64 |= irq->u.io.io_int_word;
1152 break;
1153 default:
1154 r = -EINVAL;
1155 break;
1157 return r;
1160 static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
1162 struct kvm_s390_interrupt kvmint = {};
1163 int r;
1165 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
1166 if (r < 0) {
1167 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
1168 exit(1);
1171 r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
1172 if (r < 0) {
1173 fprintf(stderr, "KVM failed to inject interrupt\n");
1174 exit(1);
1178 void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
1180 CPUState *cs = CPU(cpu);
1181 int r;
1183 if (cap_s390_irq) {
1184 r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
1185 if (!r) {
1186 return;
1188 error_report("KVM failed to inject interrupt %llx", irq->type);
1189 exit(1);
1192 inject_vcpu_irq_legacy(cs, irq);
1195 void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq *irq)
1197 struct kvm_s390_interrupt kvmint = {};
1198 int r;
1200 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
1201 if (r < 0) {
1202 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
1203 exit(1);
1206 r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
1207 if (r < 0) {
1208 fprintf(stderr, "KVM failed to inject interrupt\n");
1209 exit(1);
1213 void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code)
1215 struct kvm_s390_irq irq = {
1216 .type = KVM_S390_PROGRAM_INT,
1217 .u.pgm.code = code,
1219 qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n",
1220 cpu->env.psw.addr);
1221 kvm_s390_vcpu_interrupt(cpu, &irq);
1224 void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
1226 struct kvm_s390_irq irq = {
1227 .type = KVM_S390_PROGRAM_INT,
1228 .u.pgm.code = code,
1229 .u.pgm.trans_exc_code = te_code,
1230 .u.pgm.exc_access_id = te_code & 3,
1233 kvm_s390_vcpu_interrupt(cpu, &irq);
1236 static void kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
1237 uint16_t ipbh0)
1239 CPUS390XState *env = &cpu->env;
1240 uint64_t sccb;
1241 uint32_t code;
1242 int r;
1244 sccb = env->regs[ipbh0 & 0xf];
1245 code = env->regs[(ipbh0 & 0xf0) >> 4];
1247 switch (run->s390_sieic.icptcode) {
1248 case ICPT_PV_INSTR_NOTIFICATION:
1249 g_assert(s390_is_pv());
1250 /* The notification intercepts are currently handled by KVM */
1251 error_report("unexpected SCLP PV notification");
1252 exit(1);
1253 break;
1254 case ICPT_PV_INSTR:
1255 g_assert(s390_is_pv());
1256 sclp_service_call_protected(env, sccb, code);
1257 /* Setting the CC is done by the Ultravisor. */
1258 break;
1259 case ICPT_INSTRUCTION:
1260 g_assert(!s390_is_pv());
1261 r = sclp_service_call(env, sccb, code);
1262 if (r < 0) {
1263 kvm_s390_program_interrupt(cpu, -r);
1264 return;
1266 setcc(cpu, r);
1270 static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1272 CPUS390XState *env = &cpu->env;
1273 int rc = 0;
1274 uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
1276 switch (ipa1) {
1277 case PRIV_B2_XSCH:
1278 ioinst_handle_xsch(cpu, env->regs[1], RA_IGNORED);
1279 break;
1280 case PRIV_B2_CSCH:
1281 ioinst_handle_csch(cpu, env->regs[1], RA_IGNORED);
1282 break;
1283 case PRIV_B2_HSCH:
1284 ioinst_handle_hsch(cpu, env->regs[1], RA_IGNORED);
1285 break;
1286 case PRIV_B2_MSCH:
1287 ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1288 break;
1289 case PRIV_B2_SSCH:
1290 ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1291 break;
1292 case PRIV_B2_STCRW:
1293 ioinst_handle_stcrw(cpu, run->s390_sieic.ipb, RA_IGNORED);
1294 break;
1295 case PRIV_B2_STSCH:
1296 ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
1297 break;
1298 case PRIV_B2_TSCH:
1299 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1300 fprintf(stderr, "Spurious tsch intercept\n");
1301 break;
1302 case PRIV_B2_CHSC:
1303 ioinst_handle_chsc(cpu, run->s390_sieic.ipb, RA_IGNORED);
1304 break;
1305 case PRIV_B2_TPI:
1306 /* This should have been handled by kvm already. */
1307 fprintf(stderr, "Spurious tpi intercept\n");
1308 break;
1309 case PRIV_B2_SCHM:
1310 ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
1311 run->s390_sieic.ipb, RA_IGNORED);
1312 break;
1313 case PRIV_B2_RSCH:
1314 ioinst_handle_rsch(cpu, env->regs[1], RA_IGNORED);
1315 break;
1316 case PRIV_B2_RCHP:
1317 ioinst_handle_rchp(cpu, env->regs[1], RA_IGNORED);
1318 break;
1319 case PRIV_B2_STCPS:
1320 /* We do not provide this instruction, it is suppressed. */
1321 break;
1322 case PRIV_B2_SAL:
1323 ioinst_handle_sal(cpu, env->regs[1], RA_IGNORED);
1324 break;
1325 case PRIV_B2_SIGA:
1326 /* Not provided, set CC = 3 for subchannel not operational */
1327 setcc(cpu, 3);
1328 break;
1329 case PRIV_B2_SCLP_CALL:
1330 kvm_sclp_service_call(cpu, run, ipbh0);
1331 break;
1332 default:
1333 rc = -1;
1334 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
1335 break;
1338 return rc;
1341 static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
1342 uint8_t *ar)
1344 CPUS390XState *env = &cpu->env;
1345 uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
1346 uint32_t base2 = run->s390_sieic.ipb >> 28;
1347 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1348 ((run->s390_sieic.ipb & 0xff00) << 4);
1350 if (disp2 & 0x80000) {
1351 disp2 += 0xfff00000;
1353 if (ar) {
1354 *ar = base2;
1357 return (base2 ? env->regs[base2] : 0) +
1358 (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
1361 static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
1362 uint8_t *ar)
1364 CPUS390XState *env = &cpu->env;
1365 uint32_t base2 = run->s390_sieic.ipb >> 28;
1366 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1367 ((run->s390_sieic.ipb & 0xff00) << 4);
1369 if (disp2 & 0x80000) {
1370 disp2 += 0xfff00000;
1372 if (ar) {
1373 *ar = base2;
1376 return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
1379 static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
1381 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1383 if (s390_has_feat(S390_FEAT_ZPCI)) {
1384 return clp_service_call(cpu, r2, RA_IGNORED);
1385 } else {
1386 return -1;
1390 static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
1392 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1393 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1395 if (s390_has_feat(S390_FEAT_ZPCI)) {
1396 return pcilg_service_call(cpu, r1, r2, RA_IGNORED);
1397 } else {
1398 return -1;
1402 static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
1404 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1405 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1407 if (s390_has_feat(S390_FEAT_ZPCI)) {
1408 return pcistg_service_call(cpu, r1, r2, RA_IGNORED);
1409 } else {
1410 return -1;
1414 static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1416 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1417 uint64_t fiba;
1418 uint8_t ar;
1420 if (s390_has_feat(S390_FEAT_ZPCI)) {
1421 fiba = get_base_disp_rxy(cpu, run, &ar);
1423 return stpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
1424 } else {
1425 return -1;
1429 static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
1431 CPUS390XState *env = &cpu->env;
1432 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1433 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1434 uint8_t isc;
1435 uint16_t mode;
1436 int r;
1438 mode = env->regs[r1] & 0xffff;
1439 isc = (env->regs[r3] >> 27) & 0x7;
1440 r = css_do_sic(env, isc, mode);
1441 if (r) {
1442 kvm_s390_program_interrupt(cpu, -r);
1445 return 0;
1448 static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
1450 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1451 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1453 if (s390_has_feat(S390_FEAT_ZPCI)) {
1454 return rpcit_service_call(cpu, r1, r2, RA_IGNORED);
1455 } else {
1456 return -1;
1460 static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
1462 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1463 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1464 uint64_t gaddr;
1465 uint8_t ar;
1467 if (s390_has_feat(S390_FEAT_ZPCI)) {
1468 gaddr = get_base_disp_rsy(cpu, run, &ar);
1470 return pcistb_service_call(cpu, r1, r3, gaddr, ar, RA_IGNORED);
1471 } else {
1472 return -1;
1476 static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1478 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1479 uint64_t fiba;
1480 uint8_t ar;
1482 if (s390_has_feat(S390_FEAT_ZPCI)) {
1483 fiba = get_base_disp_rxy(cpu, run, &ar);
1485 return mpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
1486 } else {
1487 return -1;
1491 static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1493 int r = 0;
1495 switch (ipa1) {
1496 case PRIV_B9_CLP:
1497 r = kvm_clp_service_call(cpu, run);
1498 break;
1499 case PRIV_B9_PCISTG:
1500 r = kvm_pcistg_service_call(cpu, run);
1501 break;
1502 case PRIV_B9_PCILG:
1503 r = kvm_pcilg_service_call(cpu, run);
1504 break;
1505 case PRIV_B9_RPCIT:
1506 r = kvm_rpcit_service_call(cpu, run);
1507 break;
1508 case PRIV_B9_EQBS:
1509 /* just inject exception */
1510 r = -1;
1511 break;
1512 default:
1513 r = -1;
1514 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
1515 break;
1518 return r;
1521 static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1523 int r = 0;
1525 switch (ipbl) {
1526 case PRIV_EB_PCISTB:
1527 r = kvm_pcistb_service_call(cpu, run);
1528 break;
1529 case PRIV_EB_SIC:
1530 r = kvm_sic_service_call(cpu, run);
1531 break;
1532 case PRIV_EB_SQBS:
1533 /* just inject exception */
1534 r = -1;
1535 break;
1536 default:
1537 r = -1;
1538 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
1539 break;
1542 return r;
1545 static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1547 int r = 0;
1549 switch (ipbl) {
1550 case PRIV_E3_MPCIFC:
1551 r = kvm_mpcifc_service_call(cpu, run);
1552 break;
1553 case PRIV_E3_STPCIFC:
1554 r = kvm_stpcifc_service_call(cpu, run);
1555 break;
1556 default:
1557 r = -1;
1558 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
1559 break;
1562 return r;
1565 static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
1567 CPUS390XState *env = &cpu->env;
1568 int ret;
1570 ret = s390_virtio_hypercall(env);
1571 if (ret == -EINVAL) {
1572 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1573 return 0;
1576 return ret;
1579 static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
1581 uint64_t r1, r3;
1582 int rc;
1584 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1585 r3 = run->s390_sieic.ipa & 0x000f;
1586 rc = handle_diag_288(&cpu->env, r1, r3);
1587 if (rc) {
1588 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1592 static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
1594 uint64_t r1, r3;
1596 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1597 r3 = run->s390_sieic.ipa & 0x000f;
1598 handle_diag_308(&cpu->env, r1, r3, RA_IGNORED);
1601 static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
1603 CPUS390XState *env = &cpu->env;
1604 unsigned long pc;
1606 pc = env->psw.addr - sw_bp_ilen;
1607 if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
1608 env->psw.addr = pc;
1609 return EXCP_DEBUG;
1612 return -ENOENT;
1615 void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info)
1617 CPUS390XState *env = &S390_CPU(cs)->env;
1619 /* Feat bit is set only if KVM supports sync for diag318 */
1620 if (s390_has_feat(S390_FEAT_DIAG_318)) {
1621 env->diag318_info = diag318_info;
1622 cs->kvm_run->s.regs.diag318 = diag318_info;
1623 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
1627 static void handle_diag_318(S390CPU *cpu, struct kvm_run *run)
1629 uint64_t reg = (run->s390_sieic.ipa & 0x00f0) >> 4;
1630 uint64_t diag318_info = run->s.regs.gprs[reg];
1631 CPUState *t;
1634 * DIAG 318 can only be enabled with KVM support. As such, let's
1635 * ensure a guest cannot execute this instruction erroneously.
1637 if (!s390_has_feat(S390_FEAT_DIAG_318)) {
1638 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1639 return;
1642 CPU_FOREACH(t) {
1643 run_on_cpu(t, s390_do_cpu_set_diag318,
1644 RUN_ON_CPU_HOST_ULONG(diag318_info));
1648 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1650 static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
1652 int r = 0;
1653 uint16_t func_code;
1656 * For any diagnose call we support, bits 48-63 of the resulting
1657 * address specify the function code; the remainder is ignored.
1659 func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
1660 switch (func_code) {
1661 case DIAG_TIMEREVENT:
1662 kvm_handle_diag_288(cpu, run);
1663 break;
1664 case DIAG_IPL:
1665 kvm_handle_diag_308(cpu, run);
1666 break;
1667 case DIAG_SET_CONTROL_PROGRAM_CODES:
1668 handle_diag_318(cpu, run);
1669 break;
1670 case DIAG_KVM_HYPERCALL:
1671 r = handle_hypercall(cpu, run);
1672 break;
1673 case DIAG_KVM_BREAKPOINT:
1674 r = handle_sw_breakpoint(cpu, run);
1675 break;
1676 default:
1677 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
1678 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1679 break;
1682 return r;
1685 static int kvm_s390_handle_sigp(S390CPU *cpu, uint8_t ipa1, uint32_t ipb)
1687 CPUS390XState *env = &cpu->env;
1688 const uint8_t r1 = ipa1 >> 4;
1689 const uint8_t r3 = ipa1 & 0x0f;
1690 int ret;
1691 uint8_t order;
1693 /* get order code */
1694 order = decode_basedisp_rs(env, ipb, NULL) & SIGP_ORDER_MASK;
1696 ret = handle_sigp(env, order, r1, r3);
1697 setcc(cpu, ret);
1698 return 0;
1701 static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
1703 unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
1704 uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
1705 int r = -1;
1707 DPRINTF("handle_instruction 0x%x 0x%x\n",
1708 run->s390_sieic.ipa, run->s390_sieic.ipb);
1709 switch (ipa0) {
1710 case IPA0_B2:
1711 r = handle_b2(cpu, run, ipa1);
1712 break;
1713 case IPA0_B9:
1714 r = handle_b9(cpu, run, ipa1);
1715 break;
1716 case IPA0_EB:
1717 r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
1718 break;
1719 case IPA0_E3:
1720 r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
1721 break;
1722 case IPA0_DIAG:
1723 r = handle_diag(cpu, run, run->s390_sieic.ipb);
1724 break;
1725 case IPA0_SIGP:
1726 r = kvm_s390_handle_sigp(cpu, ipa1, run->s390_sieic.ipb);
1727 break;
1730 if (r < 0) {
1731 r = 0;
1732 kvm_s390_program_interrupt(cpu, PGM_OPERATION);
1735 return r;
1738 static void unmanageable_intercept(S390CPU *cpu, S390CrashReason reason,
1739 int pswoffset)
1741 CPUState *cs = CPU(cpu);
1743 s390_cpu_halt(cpu);
1744 cpu->env.crash_reason = reason;
1745 qemu_system_guest_panicked(cpu_get_crash_info(cs));
1748 /* try to detect pgm check loops */
1749 static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
1751 CPUState *cs = CPU(cpu);
1752 PSW oldpsw, newpsw;
1754 newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
1755 offsetof(LowCore, program_new_psw));
1756 newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
1757 offsetof(LowCore, program_new_psw) + 8);
1758 oldpsw.mask = run->psw_mask;
1759 oldpsw.addr = run->psw_addr;
1761 * Avoid endless loops of operation exceptions, if the pgm new
1762 * PSW will cause a new operation exception.
1763 * The heuristic checks if the pgm new psw is within 6 bytes before
1764 * the faulting psw address (with same DAT, AS settings) and the
1765 * new psw is not a wait psw and the fault was not triggered by
1766 * problem state. In that case go into crashed state.
1769 if (oldpsw.addr - newpsw.addr <= 6 &&
1770 !(newpsw.mask & PSW_MASK_WAIT) &&
1771 !(oldpsw.mask & PSW_MASK_PSTATE) &&
1772 (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&
1773 (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) {
1774 unmanageable_intercept(cpu, S390_CRASH_REASON_OPINT_LOOP,
1775 offsetof(LowCore, program_new_psw));
1776 return EXCP_HALTED;
1778 return 0;
1781 static int handle_intercept(S390CPU *cpu)
1783 CPUState *cs = CPU(cpu);
1784 struct kvm_run *run = cs->kvm_run;
1785 int icpt_code = run->s390_sieic.icptcode;
1786 int r = 0;
1788 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code,
1789 (long)cs->kvm_run->psw_addr);
1790 switch (icpt_code) {
1791 case ICPT_INSTRUCTION:
1792 case ICPT_PV_INSTR:
1793 case ICPT_PV_INSTR_NOTIFICATION:
1794 r = handle_instruction(cpu, run);
1795 break;
1796 case ICPT_PROGRAM:
1797 unmanageable_intercept(cpu, S390_CRASH_REASON_PGMINT_LOOP,
1798 offsetof(LowCore, program_new_psw));
1799 r = EXCP_HALTED;
1800 break;
1801 case ICPT_EXT_INT:
1802 unmanageable_intercept(cpu, S390_CRASH_REASON_EXTINT_LOOP,
1803 offsetof(LowCore, external_new_psw));
1804 r = EXCP_HALTED;
1805 break;
1806 case ICPT_WAITPSW:
1807 /* disabled wait, since enabled wait is handled in kernel */
1808 s390_handle_wait(cpu);
1809 r = EXCP_HALTED;
1810 break;
1811 case ICPT_CPU_STOP:
1812 do_stop_interrupt(&cpu->env);
1813 r = EXCP_HALTED;
1814 break;
1815 case ICPT_OPEREXC:
1816 /* check for break points */
1817 r = handle_sw_breakpoint(cpu, run);
1818 if (r == -ENOENT) {
1819 /* Then check for potential pgm check loops */
1820 r = handle_oper_loop(cpu, run);
1821 if (r == 0) {
1822 kvm_s390_program_interrupt(cpu, PGM_OPERATION);
1825 break;
1826 case ICPT_SOFT_INTERCEPT:
1827 fprintf(stderr, "KVM unimplemented icpt SOFT\n");
1828 exit(1);
1829 break;
1830 case ICPT_IO:
1831 fprintf(stderr, "KVM unimplemented icpt IO\n");
1832 exit(1);
1833 break;
1834 default:
1835 fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
1836 exit(1);
1837 break;
1840 return r;
1843 static int handle_tsch(S390CPU *cpu)
1845 CPUState *cs = CPU(cpu);
1846 struct kvm_run *run = cs->kvm_run;
1847 int ret;
1849 ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb,
1850 RA_IGNORED);
1851 if (ret < 0) {
1853 * Failure.
1854 * If an I/O interrupt had been dequeued, we have to reinject it.
1856 if (run->s390_tsch.dequeued) {
1857 s390_io_interrupt(run->s390_tsch.subchannel_id,
1858 run->s390_tsch.subchannel_nr,
1859 run->s390_tsch.io_int_parm,
1860 run->s390_tsch.io_int_word);
1862 ret = 0;
1864 return ret;
1867 static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
1869 const MachineState *ms = MACHINE(qdev_get_machine());
1870 uint16_t conf_cpus = 0, reserved_cpus = 0;
1871 SysIB_322 sysib;
1872 int del, i;
1874 if (s390_is_pv()) {
1875 s390_cpu_pv_mem_read(cpu, 0, &sysib, sizeof(sysib));
1876 } else if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
1877 return;
1879 /* Shift the stack of Extended Names to prepare for our own data */
1880 memmove(&sysib.ext_names[1], &sysib.ext_names[0],
1881 sizeof(sysib.ext_names[0]) * (sysib.count - 1));
1882 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1883 * assumed it's not capable of managing Extended Names for lower levels.
1885 for (del = 1; del < sysib.count; del++) {
1886 if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
1887 break;
1890 if (del < sysib.count) {
1891 memset(sysib.ext_names[del], 0,
1892 sizeof(sysib.ext_names[0]) * (sysib.count - del));
1895 /* count the cpus and split them into configured and reserved ones */
1896 for (i = 0; i < ms->possible_cpus->len; i++) {
1897 if (ms->possible_cpus->cpus[i].cpu) {
1898 conf_cpus++;
1899 } else {
1900 reserved_cpus++;
1903 sysib.vm[0].total_cpus = conf_cpus + reserved_cpus;
1904 sysib.vm[0].conf_cpus = conf_cpus;
1905 sysib.vm[0].reserved_cpus = reserved_cpus;
1907 /* Insert short machine name in EBCDIC, padded with blanks */
1908 if (qemu_name) {
1909 memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
1910 ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
1911 strlen(qemu_name)));
1913 sysib.vm[0].ext_name_encoding = 2; /* 2 = UTF-8 */
1914 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1915 * considered by s390 as not capable of providing any Extended Name.
1916 * Therefore if no name was specified on qemu invocation, we go with the
1917 * same "KVMguest" default, which KVM has filled into short name field.
1919 strpadcpy((char *)sysib.ext_names[0],
1920 sizeof(sysib.ext_names[0]),
1921 qemu_name ?: "KVMguest", '\0');
1923 /* Insert UUID */
1924 memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid));
1926 if (s390_is_pv()) {
1927 s390_cpu_pv_mem_write(cpu, 0, &sysib, sizeof(sysib));
1928 } else {
1929 s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
1933 static int handle_stsi(S390CPU *cpu)
1935 CPUState *cs = CPU(cpu);
1936 struct kvm_run *run = cs->kvm_run;
1938 switch (run->s390_stsi.fc) {
1939 case 3:
1940 if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
1941 return 0;
1943 /* Only sysib 3.2.2 needs post-handling for now. */
1944 insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
1945 return 0;
1946 default:
1947 return 0;
1951 static int kvm_arch_handle_debug_exit(S390CPU *cpu)
1953 CPUState *cs = CPU(cpu);
1954 struct kvm_run *run = cs->kvm_run;
1956 int ret = 0;
1957 struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
1959 switch (arch_info->type) {
1960 case KVM_HW_WP_WRITE:
1961 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1962 cs->watchpoint_hit = &hw_watchpoint;
1963 hw_watchpoint.vaddr = arch_info->addr;
1964 hw_watchpoint.flags = BP_MEM_WRITE;
1965 ret = EXCP_DEBUG;
1967 break;
1968 case KVM_HW_BP:
1969 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1970 ret = EXCP_DEBUG;
1972 break;
1973 case KVM_SINGLESTEP:
1974 if (cs->singlestep_enabled) {
1975 ret = EXCP_DEBUG;
1977 break;
1978 default:
1979 ret = -ENOSYS;
1982 return ret;
1985 int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
1987 S390CPU *cpu = S390_CPU(cs);
1988 int ret = 0;
1990 qemu_mutex_lock_iothread();
1992 kvm_cpu_synchronize_state(cs);
1994 switch (run->exit_reason) {
1995 case KVM_EXIT_S390_SIEIC:
1996 ret = handle_intercept(cpu);
1997 break;
1998 case KVM_EXIT_S390_RESET:
1999 s390_ipl_reset_request(cs, S390_RESET_REIPL);
2000 break;
2001 case KVM_EXIT_S390_TSCH:
2002 ret = handle_tsch(cpu);
2003 break;
2004 case KVM_EXIT_S390_STSI:
2005 ret = handle_stsi(cpu);
2006 break;
2007 case KVM_EXIT_DEBUG:
2008 ret = kvm_arch_handle_debug_exit(cpu);
2009 break;
2010 default:
2011 fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
2012 break;
2014 qemu_mutex_unlock_iothread();
2016 if (ret == 0) {
2017 ret = EXCP_INTERRUPT;
2019 return ret;
2022 bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
2024 return true;
2027 void kvm_s390_enable_css_support(S390CPU *cpu)
2029 int r;
2031 /* Activate host kernel channel subsystem support. */
2032 r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
2033 assert(r == 0);
2036 void kvm_arch_init_irq_routing(KVMState *s)
2039 * Note that while irqchip capabilities generally imply that cpustates
2040 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2041 * have to override the common code kvm_halt_in_kernel_allowed setting.
2043 if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
2044 kvm_gsi_routing_allowed = true;
2045 kvm_halt_in_kernel_allowed = false;
2049 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
2050 int vq, bool assign)
2052 struct kvm_ioeventfd kick = {
2053 .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
2054 KVM_IOEVENTFD_FLAG_DATAMATCH,
2055 .fd = event_notifier_get_fd(notifier),
2056 .datamatch = vq,
2057 .addr = sch,
2058 .len = 8,
2060 trace_kvm_assign_subch_ioeventfd(kick.fd, kick.addr, assign,
2061 kick.datamatch);
2062 if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
2063 return -ENOSYS;
2065 if (!assign) {
2066 kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
2068 return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
2071 int kvm_s390_get_ri(void)
2073 return cap_ri;
2076 int kvm_s390_get_gs(void)
2078 return cap_gs;
2081 int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
2083 struct kvm_mp_state mp_state = {};
2084 int ret;
2086 /* the kvm part might not have been initialized yet */
2087 if (CPU(cpu)->kvm_state == NULL) {
2088 return 0;
2091 switch (cpu_state) {
2092 case S390_CPU_STATE_STOPPED:
2093 mp_state.mp_state = KVM_MP_STATE_STOPPED;
2094 break;
2095 case S390_CPU_STATE_CHECK_STOP:
2096 mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
2097 break;
2098 case S390_CPU_STATE_OPERATING:
2099 mp_state.mp_state = KVM_MP_STATE_OPERATING;
2100 break;
2101 case S390_CPU_STATE_LOAD:
2102 mp_state.mp_state = KVM_MP_STATE_LOAD;
2103 break;
2104 default:
2105 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2106 cpu_state);
2107 exit(1);
2110 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
2111 if (ret) {
2112 trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
2113 strerror(-ret));
2116 return ret;
2119 void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
2121 unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
2122 struct kvm_s390_irq_state irq_state = {
2123 .buf = (uint64_t) cpu->irqstate,
2124 .len = VCPU_IRQ_BUF_SIZE(max_cpus),
2126 CPUState *cs = CPU(cpu);
2127 int32_t bytes;
2129 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2130 return;
2133 bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
2134 if (bytes < 0) {
2135 cpu->irqstate_saved_size = 0;
2136 error_report("Migration of interrupt state failed");
2137 return;
2140 cpu->irqstate_saved_size = bytes;
2143 int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
2145 CPUState *cs = CPU(cpu);
2146 struct kvm_s390_irq_state irq_state = {
2147 .buf = (uint64_t) cpu->irqstate,
2148 .len = cpu->irqstate_saved_size,
2150 int r;
2152 if (cpu->irqstate_saved_size == 0) {
2153 return 0;
2156 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2157 return -ENOSYS;
2160 r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
2161 if (r) {
2162 error_report("Setting interrupt state failed %d", r);
2164 return r;
2167 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
2168 uint64_t address, uint32_t data, PCIDevice *dev)
2170 S390PCIBusDevice *pbdev;
2171 uint32_t vec = data & ZPCI_MSI_VEC_MASK;
2173 if (!dev) {
2174 DPRINTF("add_msi_route no pci device\n");
2175 return -ENODEV;
2178 pbdev = s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev)->id);
2179 if (!pbdev) {
2180 DPRINTF("add_msi_route no zpci device\n");
2181 return -ENODEV;
2184 route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
2185 route->flags = 0;
2186 route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
2187 route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
2188 route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
2189 route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset + vec;
2190 route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
2191 return 0;
2194 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
2195 int vector, PCIDevice *dev)
2197 return 0;
2200 int kvm_arch_release_virq_post(int virq)
2202 return 0;
2205 int kvm_arch_msi_data_to_gsi(uint32_t data)
2207 abort();
2210 static int query_cpu_subfunc(S390FeatBitmap features)
2212 struct kvm_s390_vm_cpu_subfunc prop = {};
2213 struct kvm_device_attr attr = {
2214 .group = KVM_S390_VM_CPU_MODEL,
2215 .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC,
2216 .addr = (uint64_t) &prop,
2218 int rc;
2220 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2221 if (rc) {
2222 return rc;
2226 * We're going to add all subfunctions now, if the corresponding feature
2227 * is available that unlocks the query functions.
2229 s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2230 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2231 s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2233 if (test_bit(S390_FEAT_MSA, features)) {
2234 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2235 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2236 s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2237 s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2238 s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2240 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2241 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2243 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2244 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2245 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2246 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2247 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2249 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2250 s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2252 if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
2253 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
2255 if (test_bit(S390_FEAT_MSA_EXT_9, features)) {
2256 s390_add_from_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa);
2258 if (test_bit(S390_FEAT_ESORT_BASE, features)) {
2259 s390_add_from_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl);
2261 if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
2262 s390_add_from_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
2264 return 0;
2267 static int configure_cpu_subfunc(const S390FeatBitmap features)
2269 struct kvm_s390_vm_cpu_subfunc prop = {};
2270 struct kvm_device_attr attr = {
2271 .group = KVM_S390_VM_CPU_MODEL,
2272 .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC,
2273 .addr = (uint64_t) &prop,
2276 if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2277 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) {
2278 /* hardware support might be missing, IBC will handle most of this */
2279 return 0;
2282 s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2283 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2284 s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2286 if (test_bit(S390_FEAT_MSA, features)) {
2287 s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2288 s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2289 s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2290 s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2291 s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2293 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2294 s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2296 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2297 s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2298 s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2299 s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2300 s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2302 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2303 s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2305 if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
2306 s390_fill_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
2308 if (test_bit(S390_FEAT_MSA_EXT_9, features)) {
2309 s390_fill_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa);
2311 if (test_bit(S390_FEAT_ESORT_BASE, features)) {
2312 s390_fill_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl);
2314 if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
2315 s390_fill_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
2317 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2320 static int kvm_to_feat[][2] = {
2321 { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP },
2322 { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 },
2323 { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO },
2324 { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF },
2325 { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE },
2326 { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS },
2327 { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB },
2328 { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI },
2329 { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS },
2330 { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY },
2331 { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA },
2332 { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
2333 { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
2334 { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS},
2337 static int query_cpu_feat(S390FeatBitmap features)
2339 struct kvm_s390_vm_cpu_feat prop = {};
2340 struct kvm_device_attr attr = {
2341 .group = KVM_S390_VM_CPU_MODEL,
2342 .attr = KVM_S390_VM_CPU_MACHINE_FEAT,
2343 .addr = (uint64_t) &prop,
2345 int rc;
2346 int i;
2348 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2349 if (rc) {
2350 return rc;
2353 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2354 if (test_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat)) {
2355 set_bit(kvm_to_feat[i][1], features);
2358 return 0;
2361 static int configure_cpu_feat(const S390FeatBitmap features)
2363 struct kvm_s390_vm_cpu_feat prop = {};
2364 struct kvm_device_attr attr = {
2365 .group = KVM_S390_VM_CPU_MODEL,
2366 .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT,
2367 .addr = (uint64_t) &prop,
2369 int i;
2371 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2372 if (test_bit(kvm_to_feat[i][1], features)) {
2373 set_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat);
2376 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2379 bool kvm_s390_cpu_models_supported(void)
2381 if (!cpu_model_allowed()) {
2382 /* compatibility machines interfere with the cpu model */
2383 return false;
2385 return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2386 KVM_S390_VM_CPU_MACHINE) &&
2387 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2388 KVM_S390_VM_CPU_PROCESSOR) &&
2389 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2390 KVM_S390_VM_CPU_MACHINE_FEAT) &&
2391 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2392 KVM_S390_VM_CPU_PROCESSOR_FEAT) &&
2393 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2394 KVM_S390_VM_CPU_MACHINE_SUBFUNC);
2397 void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
2399 struct kvm_s390_vm_cpu_machine prop = {};
2400 struct kvm_device_attr attr = {
2401 .group = KVM_S390_VM_CPU_MODEL,
2402 .attr = KVM_S390_VM_CPU_MACHINE,
2403 .addr = (uint64_t) &prop,
2405 uint16_t unblocked_ibc = 0, cpu_type = 0;
2406 int rc;
2408 memset(model, 0, sizeof(*model));
2410 if (!kvm_s390_cpu_models_supported()) {
2411 error_setg(errp, "KVM doesn't support CPU models");
2412 return;
2415 /* query the basic cpu model properties */
2416 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2417 if (rc) {
2418 error_setg(errp, "KVM: Error querying host CPU model: %d", rc);
2419 return;
2422 cpu_type = cpuid_type(prop.cpuid);
2423 if (has_ibc(prop.ibc)) {
2424 model->lowest_ibc = lowest_ibc(prop.ibc);
2425 unblocked_ibc = unblocked_ibc(prop.ibc);
2427 model->cpu_id = cpuid_id(prop.cpuid);
2428 model->cpu_id_format = cpuid_format(prop.cpuid);
2429 model->cpu_ver = 0xff;
2431 /* get supported cpu features indicated via STFL(E) */
2432 s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL,
2433 (uint8_t *) prop.fac_mask);
2434 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2435 if (test_bit(S390_FEAT_STFLE, model->features)) {
2436 set_bit(S390_FEAT_DAT_ENH_2, model->features);
2438 /* get supported cpu features indicated e.g. via SCLP */
2439 rc = query_cpu_feat(model->features);
2440 if (rc) {
2441 error_setg(errp, "KVM: Error querying CPU features: %d", rc);
2442 return;
2444 /* get supported cpu subfunctions indicated via query / test bit */
2445 rc = query_cpu_subfunc(model->features);
2446 if (rc) {
2447 error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc);
2448 return;
2451 /* PTFF subfunctions might be indicated although kernel support missing */
2452 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH, model->features)) {
2453 clear_bit(S390_FEAT_PTFF_QSIE, model->features);
2454 clear_bit(S390_FEAT_PTFF_QTOUE, model->features);
2455 clear_bit(S390_FEAT_PTFF_STOE, model->features);
2456 clear_bit(S390_FEAT_PTFF_STOUE, model->features);
2459 /* with cpu model support, CMM is only indicated if really available */
2460 if (kvm_s390_cmma_available()) {
2461 set_bit(S390_FEAT_CMM, model->features);
2462 } else {
2463 /* no cmm -> no cmm nt */
2464 clear_bit(S390_FEAT_CMM_NT, model->features);
2467 /* bpb needs kernel support for migration, VSIE and reset */
2468 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_BPB)) {
2469 clear_bit(S390_FEAT_BPB, model->features);
2473 * If we have support for protected virtualization, indicate
2474 * the protected virtualization IPL unpack facility.
2476 if (cap_protected) {
2477 set_bit(S390_FEAT_UNPACK, model->features);
2480 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2481 set_bit(S390_FEAT_ZPCI, model->features);
2482 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
2484 if (s390_known_cpu_type(cpu_type)) {
2485 /* we want the exact model, even if some features are missing */
2486 model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc),
2487 ibc_ec_ga(unblocked_ibc), NULL);
2488 } else {
2489 /* model unknown, e.g. too new - search using features */
2490 model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc),
2491 ibc_ec_ga(unblocked_ibc),
2492 model->features);
2494 if (!model->def) {
2495 error_setg(errp, "KVM: host CPU model could not be identified");
2496 return;
2498 /* for now, we can only provide the AP feature with HW support */
2499 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO,
2500 KVM_S390_VM_CRYPTO_ENABLE_APIE)) {
2501 set_bit(S390_FEAT_AP, model->features);
2505 * Extended-Length SCCB is handled entirely within QEMU.
2506 * For PV guests this is completely fenced by the Ultravisor, as Service
2507 * Call error checking and STFLE interpretation are handled via SIE.
2509 set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB, model->features);
2511 if (kvm_check_extension(kvm_state, KVM_CAP_S390_DIAG318)) {
2512 set_bit(S390_FEAT_DIAG_318, model->features);
2515 /* strip of features that are not part of the maximum model */
2516 bitmap_and(model->features, model->features, model->def->full_feat,
2517 S390_FEAT_MAX);
2520 static void kvm_s390_configure_apie(bool interpret)
2522 uint64_t attr = interpret ? KVM_S390_VM_CRYPTO_ENABLE_APIE :
2523 KVM_S390_VM_CRYPTO_DISABLE_APIE;
2525 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
2526 kvm_s390_set_attr(attr);
2530 void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp)
2532 struct kvm_s390_vm_cpu_processor prop = {
2533 .fac_list = { 0 },
2535 struct kvm_device_attr attr = {
2536 .group = KVM_S390_VM_CPU_MODEL,
2537 .attr = KVM_S390_VM_CPU_PROCESSOR,
2538 .addr = (uint64_t) &prop,
2540 int rc;
2542 if (!model) {
2543 /* compatibility handling if cpu models are disabled */
2544 if (kvm_s390_cmma_available()) {
2545 kvm_s390_enable_cmma();
2547 return;
2549 if (!kvm_s390_cpu_models_supported()) {
2550 error_setg(errp, "KVM doesn't support CPU models");
2551 return;
2553 prop.cpuid = s390_cpuid_from_cpu_model(model);
2554 prop.ibc = s390_ibc_from_cpu_model(model);
2555 /* configure cpu features indicated via STFL(e) */
2556 s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL,
2557 (uint8_t *) prop.fac_list);
2558 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2559 if (rc) {
2560 error_setg(errp, "KVM: Error configuring the CPU model: %d", rc);
2561 return;
2563 /* configure cpu features indicated e.g. via SCLP */
2564 rc = configure_cpu_feat(model->features);
2565 if (rc) {
2566 error_setg(errp, "KVM: Error configuring CPU features: %d", rc);
2567 return;
2569 /* configure cpu subfunctions indicated via query / test bit */
2570 rc = configure_cpu_subfunc(model->features);
2571 if (rc) {
2572 error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc);
2573 return;
2575 /* enable CMM via CMMA */
2576 if (test_bit(S390_FEAT_CMM, model->features)) {
2577 kvm_s390_enable_cmma();
2580 if (test_bit(S390_FEAT_AP, model->features)) {
2581 kvm_s390_configure_apie(true);
2585 void kvm_s390_restart_interrupt(S390CPU *cpu)
2587 struct kvm_s390_irq irq = {
2588 .type = KVM_S390_RESTART,
2591 kvm_s390_vcpu_interrupt(cpu, &irq);
2594 void kvm_s390_stop_interrupt(S390CPU *cpu)
2596 struct kvm_s390_irq irq = {
2597 .type = KVM_S390_SIGP_STOP,
2600 kvm_s390_vcpu_interrupt(cpu, &irq);