2 * QEMU S390x KVM implementation
5 * Copyright IBM Corp. 2012
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * Contributions after 2012-10-29 are licensed under the terms of the
18 * GNU GPL, version 2 or (at your option) any later version.
20 * You should have received a copy of the GNU (Lesser) General Public
21 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
24 #include "qemu/osdep.h"
25 #include <sys/ioctl.h>
27 #include <linux/kvm.h>
28 #include <asm/ptrace.h>
30 #include "qemu-common.h"
32 #include "qemu/error-report.h"
33 #include "qemu/timer.h"
34 #include "sysemu/sysemu.h"
35 #include "sysemu/hw_accel.h"
37 #include "sysemu/device_tree.h"
38 #include "qapi/qmp/qjson.h"
39 #include "exec/gdbstub.h"
40 #include "exec/address-spaces.h"
42 #include "qapi-event.h"
43 #include "hw/s390x/s390-pci-inst.h"
44 #include "hw/s390x/s390-pci-bus.h"
45 #include "hw/s390x/ipl.h"
46 #include "hw/s390x/ebcdic.h"
47 #include "exec/memattrs.h"
48 #include "hw/s390x/s390-virtio-ccw.h"
54 #define DPRINTF(fmt, ...) do { \
56 fprintf(stderr, fmt, ## __VA_ARGS__); \
60 #define kvm_vm_check_mem_attr(s, attr) \
61 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
63 #define IPA0_DIAG 0x8300
64 #define IPA0_SIGP 0xae00
65 #define IPA0_B2 0xb200
66 #define IPA0_B9 0xb900
67 #define IPA0_EB 0xeb00
68 #define IPA0_E3 0xe300
70 #define PRIV_B2_SCLP_CALL 0x20
71 #define PRIV_B2_CSCH 0x30
72 #define PRIV_B2_HSCH 0x31
73 #define PRIV_B2_MSCH 0x32
74 #define PRIV_B2_SSCH 0x33
75 #define PRIV_B2_STSCH 0x34
76 #define PRIV_B2_TSCH 0x35
77 #define PRIV_B2_TPI 0x36
78 #define PRIV_B2_SAL 0x37
79 #define PRIV_B2_RSCH 0x38
80 #define PRIV_B2_STCRW 0x39
81 #define PRIV_B2_STCPS 0x3a
82 #define PRIV_B2_RCHP 0x3b
83 #define PRIV_B2_SCHM 0x3c
84 #define PRIV_B2_CHSC 0x5f
85 #define PRIV_B2_SIGA 0x74
86 #define PRIV_B2_XSCH 0x76
88 #define PRIV_EB_SQBS 0x8a
89 #define PRIV_EB_PCISTB 0xd0
90 #define PRIV_EB_SIC 0xd1
92 #define PRIV_B9_EQBS 0x9c
93 #define PRIV_B9_CLP 0xa0
94 #define PRIV_B9_PCISTG 0xd0
95 #define PRIV_B9_PCILG 0xd2
96 #define PRIV_B9_RPCIT 0xd3
98 #define PRIV_E3_MPCIFC 0xd0
99 #define PRIV_E3_STPCIFC 0xd4
101 #define DIAG_TIMEREVENT 0x288
102 #define DIAG_IPL 0x308
103 #define DIAG_KVM_HYPERCALL 0x500
104 #define DIAG_KVM_BREAKPOINT 0x501
106 #define ICPT_INSTRUCTION 0x04
107 #define ICPT_PROGRAM 0x08
108 #define ICPT_EXT_INT 0x14
109 #define ICPT_WAITPSW 0x1c
110 #define ICPT_SOFT_INTERCEPT 0x24
111 #define ICPT_CPU_STOP 0x28
112 #define ICPT_OPEREXC 0x2c
115 #define NR_LOCAL_IRQS 32
117 * Needs to be big enough to contain max_cpus emergency signals
118 * and in addition NR_LOCAL_IRQS interrupts
120 #define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
121 (max_cpus + NR_LOCAL_IRQS))
123 static CPUWatchpoint hw_watchpoint;
125 * We don't use a list because this structure is also used to transmit the
126 * hardware breakpoints to the kernel.
128 static struct kvm_hw_breakpoint *hw_breakpoints;
129 static int nb_hw_breakpoints;
131 const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
135 static QemuMutex qemu_sigp_mutex;
137 static int cap_sync_regs;
138 static int cap_async_pf;
139 static int cap_mem_op;
140 static int cap_s390_irq;
144 static int active_cmma;
146 static void *legacy_s390_alloc(size_t size, uint64_t *align);
148 static int kvm_s390_query_mem_limit(KVMState *s, uint64_t *memory_limit)
150 struct kvm_device_attr attr = {
151 .group = KVM_S390_VM_MEM_CTRL,
152 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
153 .addr = (uint64_t) memory_limit,
156 return kvm_vm_ioctl(s, KVM_GET_DEVICE_ATTR, &attr);
159 int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit)
163 struct kvm_device_attr attr = {
164 .group = KVM_S390_VM_MEM_CTRL,
165 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
166 .addr = (uint64_t) &new_limit,
169 if (!kvm_vm_check_mem_attr(s, KVM_S390_VM_MEM_LIMIT_SIZE)) {
173 rc = kvm_s390_query_mem_limit(s, hw_limit);
176 } else if (*hw_limit < new_limit) {
180 return kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
183 int kvm_s390_cmma_active(void)
188 static bool kvm_s390_cmma_available(void)
190 static bool initialized, value;
194 value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) &&
195 kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA);
200 void kvm_s390_cmma_reset(void)
203 struct kvm_device_attr attr = {
204 .group = KVM_S390_VM_MEM_CTRL,
205 .attr = KVM_S390_VM_MEM_CLR_CMMA,
208 if (!kvm_s390_cmma_active()) {
212 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
213 trace_kvm_clear_cmma(rc);
216 static void kvm_s390_enable_cmma(void)
219 struct kvm_device_attr attr = {
220 .group = KVM_S390_VM_MEM_CTRL,
221 .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
225 error_report("Warning: CMM will not be enabled because it is not "
226 "compatible to hugetlbfs.");
229 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
231 trace_kvm_enable_cmma(rc);
234 static void kvm_s390_set_attr(uint64_t attr)
236 struct kvm_device_attr attribute = {
237 .group = KVM_S390_VM_CRYPTO,
241 int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
244 error_report("Failed to set crypto device attribute %lu: %s",
245 attr, strerror(-ret));
249 static void kvm_s390_init_aes_kw(void)
251 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
253 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
255 attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
258 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
259 kvm_s390_set_attr(attr);
263 static void kvm_s390_init_dea_kw(void)
265 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
267 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
269 attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
272 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
273 kvm_s390_set_attr(attr);
277 void kvm_s390_crypto_reset(void)
279 if (s390_has_feat(S390_FEAT_MSA_EXT_3)) {
280 kvm_s390_init_aes_kw();
281 kvm_s390_init_dea_kw();
285 int kvm_arch_init(MachineState *ms, KVMState *s)
287 cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
288 cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
289 cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
290 cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
292 if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
293 || !kvm_check_extension(s, KVM_CAP_S390_COW)) {
294 phys_mem_set_alloc(legacy_s390_alloc);
297 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
298 kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
299 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
301 if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
306 if (kvm_vm_enable_cap(s, KVM_CAP_S390_GS, 0) == 0) {
311 /* Try to enable AIS facility */
312 kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0);
314 qemu_mutex_init(&qemu_sigp_mutex);
319 int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
324 unsigned long kvm_arch_vcpu_id(CPUState *cpu)
326 return cpu->cpu_index;
329 int kvm_arch_init_vcpu(CPUState *cs)
331 S390CPU *cpu = S390_CPU(cs);
332 kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
333 cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE);
337 void kvm_s390_reset_vcpu(S390CPU *cpu)
339 CPUState *cs = CPU(cpu);
341 /* The initial reset call is needed here to reset in-kernel
342 * vcpu data that we can't access directly from QEMU
343 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
344 * Before this ioctl cpu_synchronize_state() is called in common kvm
346 if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
347 error_report("Initial CPU reset failed on CPU %i", cs->cpu_index);
351 static int can_sync_regs(CPUState *cs, int regs)
353 return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
356 int kvm_arch_put_registers(CPUState *cs, int level)
358 S390CPU *cpu = S390_CPU(cs);
359 CPUS390XState *env = &cpu->env;
360 struct kvm_sregs sregs;
361 struct kvm_regs regs;
362 struct kvm_fpu fpu = {};
366 /* always save the PSW and the GPRS*/
367 cs->kvm_run->psw_addr = env->psw.addr;
368 cs->kvm_run->psw_mask = env->psw.mask;
370 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
371 for (i = 0; i < 16; i++) {
372 cs->kvm_run->s.regs.gprs[i] = env->regs[i];
373 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
376 for (i = 0; i < 16; i++) {
377 regs.gprs[i] = env->regs[i];
379 r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
385 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
386 for (i = 0; i < 32; i++) {
387 cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0].ll;
388 cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1].ll;
390 cs->kvm_run->s.regs.fpc = env->fpc;
391 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
392 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
393 for (i = 0; i < 16; i++) {
394 cs->kvm_run->s.regs.fprs[i] = get_freg(env, i)->ll;
396 cs->kvm_run->s.regs.fpc = env->fpc;
397 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
400 for (i = 0; i < 16; i++) {
401 fpu.fprs[i] = get_freg(env, i)->ll;
405 r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
411 /* Do we need to save more than that? */
412 if (level == KVM_PUT_RUNTIME_STATE) {
416 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
417 cs->kvm_run->s.regs.cputm = env->cputm;
418 cs->kvm_run->s.regs.ckc = env->ckc;
419 cs->kvm_run->s.regs.todpr = env->todpr;
420 cs->kvm_run->s.regs.gbea = env->gbea;
421 cs->kvm_run->s.regs.pp = env->pp;
422 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
425 * These ONE_REGS are not protected by a capability. As they are only
426 * necessary for migration we just trace a possible error, but don't
427 * return with an error return code.
429 kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
430 kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
431 kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
432 kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
433 kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
436 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
437 memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64);
438 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB;
441 /* pfault parameters */
442 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
443 cs->kvm_run->s.regs.pft = env->pfault_token;
444 cs->kvm_run->s.regs.pfs = env->pfault_select;
445 cs->kvm_run->s.regs.pfc = env->pfault_compare;
446 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
447 } else if (cap_async_pf) {
448 r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
452 r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
456 r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
462 /* access registers and control registers*/
463 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
464 for (i = 0; i < 16; i++) {
465 cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
466 cs->kvm_run->s.regs.crs[i] = env->cregs[i];
468 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
469 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
471 for (i = 0; i < 16; i++) {
472 sregs.acrs[i] = env->aregs[i];
473 sregs.crs[i] = env->cregs[i];
475 r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
481 if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
482 memcpy(cs->kvm_run->s.regs.gscb, env->gscb, 32);
483 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GSCB;
486 /* Finally the prefix */
487 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
488 cs->kvm_run->s.regs.prefix = env->psa;
489 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
491 /* prefix is only supported via sync regs */
496 int kvm_arch_get_registers(CPUState *cs)
498 S390CPU *cpu = S390_CPU(cs);
499 CPUS390XState *env = &cpu->env;
500 struct kvm_sregs sregs;
501 struct kvm_regs regs;
506 env->psw.addr = cs->kvm_run->psw_addr;
507 env->psw.mask = cs->kvm_run->psw_mask;
510 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
511 for (i = 0; i < 16; i++) {
512 env->regs[i] = cs->kvm_run->s.regs.gprs[i];
515 r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
519 for (i = 0; i < 16; i++) {
520 env->regs[i] = regs.gprs[i];
524 /* The ACRS and CRS */
525 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
526 for (i = 0; i < 16; i++) {
527 env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
528 env->cregs[i] = cs->kvm_run->s.regs.crs[i];
531 r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
535 for (i = 0; i < 16; i++) {
536 env->aregs[i] = sregs.acrs[i];
537 env->cregs[i] = sregs.crs[i];
541 /* Floating point and vector registers */
542 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
543 for (i = 0; i < 32; i++) {
544 env->vregs[i][0].ll = cs->kvm_run->s.regs.vrs[i][0];
545 env->vregs[i][1].ll = cs->kvm_run->s.regs.vrs[i][1];
547 env->fpc = cs->kvm_run->s.regs.fpc;
548 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
549 for (i = 0; i < 16; i++) {
550 get_freg(env, i)->ll = cs->kvm_run->s.regs.fprs[i];
552 env->fpc = cs->kvm_run->s.regs.fpc;
554 r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
558 for (i = 0; i < 16; i++) {
559 get_freg(env, i)->ll = fpu.fprs[i];
565 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
566 env->psa = cs->kvm_run->s.regs.prefix;
569 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
570 env->cputm = cs->kvm_run->s.regs.cputm;
571 env->ckc = cs->kvm_run->s.regs.ckc;
572 env->todpr = cs->kvm_run->s.regs.todpr;
573 env->gbea = cs->kvm_run->s.regs.gbea;
574 env->pp = cs->kvm_run->s.regs.pp;
577 * These ONE_REGS are not protected by a capability. As they are only
578 * necessary for migration we just trace a possible error, but don't
579 * return with an error return code.
581 kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
582 kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
583 kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
584 kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
585 kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
588 if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
589 memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64);
592 if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
593 memcpy(env->gscb, cs->kvm_run->s.regs.gscb, 32);
596 /* pfault parameters */
597 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
598 env->pfault_token = cs->kvm_run->s.regs.pft;
599 env->pfault_select = cs->kvm_run->s.regs.pfs;
600 env->pfault_compare = cs->kvm_run->s.regs.pfc;
601 } else if (cap_async_pf) {
602 r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
606 r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
610 r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
619 int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
622 struct kvm_device_attr attr = {
623 .group = KVM_S390_VM_TOD,
624 .attr = KVM_S390_VM_TOD_LOW,
625 .addr = (uint64_t)tod_low,
628 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
633 attr.attr = KVM_S390_VM_TOD_HIGH;
634 attr.addr = (uint64_t)tod_high;
635 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
638 int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
642 struct kvm_device_attr attr = {
643 .group = KVM_S390_VM_TOD,
644 .attr = KVM_S390_VM_TOD_LOW,
645 .addr = (uint64_t)tod_low,
648 r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
653 attr.attr = KVM_S390_VM_TOD_HIGH;
654 attr.addr = (uint64_t)tod_high;
655 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
660 * @addr: the logical start address in guest memory
661 * @ar: the access register number
662 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
663 * @len: length that should be transferred
664 * @is_write: true = write, false = read
665 * Returns: 0 on success, non-zero if an exception or error occurred
667 * Use KVM ioctl to read/write from/to guest memory. An access exception
668 * is injected into the vCPU in case of translation errors.
670 int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
671 int len, bool is_write)
673 struct kvm_s390_mem_op mem_op = {
675 .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
677 .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
678 : KVM_S390_MEMOP_LOGICAL_READ,
679 .buf = (uint64_t)hostbuf,
688 mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
691 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
693 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret));
699 * Legacy layout for s390:
700 * Older S390 KVM requires the topmost vma of the RAM to be
701 * smaller than an system defined value, which is at least 256GB.
702 * Larger systems have larger values. We put the guest between
703 * the end of data segment (system break) and this value. We
704 * use 32GB as a base to have enough room for the system break
705 * to grow. We also have to use MAP parameters that avoid
706 * read-only mapping of guest pages.
708 static void *legacy_s390_alloc(size_t size, uint64_t *align)
712 mem = mmap((void *) 0x800000000ULL, size,
713 PROT_EXEC|PROT_READ|PROT_WRITE,
714 MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
715 return mem == MAP_FAILED ? NULL : mem;
718 static uint8_t const *sw_bp_inst;
719 static uint8_t sw_bp_ilen;
721 static void determine_sw_breakpoint_instr(void)
723 /* DIAG 501 is used for sw breakpoints with old kernels */
724 static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
725 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
726 static const uint8_t instr_0x0000[] = {0x00, 0x00};
731 if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) {
732 sw_bp_inst = diag_501;
733 sw_bp_ilen = sizeof(diag_501);
734 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
736 sw_bp_inst = instr_0x0000;
737 sw_bp_ilen = sizeof(instr_0x0000);
738 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
742 int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
744 determine_sw_breakpoint_instr();
746 if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
748 cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) {
754 int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
758 if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) {
760 } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) {
762 } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
770 static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
775 for (n = 0; n < nb_hw_breakpoints; n++) {
776 if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
777 (hw_breakpoints[n].len == len || len == -1)) {
778 return &hw_breakpoints[n];
785 static int insert_hw_breakpoint(target_ulong addr, int len, int type)
789 if (find_hw_breakpoint(addr, len, type)) {
793 size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
795 if (!hw_breakpoints) {
796 nb_hw_breakpoints = 0;
797 hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
800 (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
803 if (!hw_breakpoints) {
804 nb_hw_breakpoints = 0;
808 hw_breakpoints[nb_hw_breakpoints].addr = addr;
809 hw_breakpoints[nb_hw_breakpoints].len = len;
810 hw_breakpoints[nb_hw_breakpoints].type = type;
817 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
818 target_ulong len, int type)
821 case GDB_BREAKPOINT_HW:
824 case GDB_WATCHPOINT_WRITE:
828 type = KVM_HW_WP_WRITE;
833 return insert_hw_breakpoint(addr, len, type);
836 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
837 target_ulong len, int type)
840 struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
847 if (nb_hw_breakpoints > 0) {
849 * In order to trim the array, move the last element to the position to
850 * be removed - if necessary.
852 if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
853 *bp = hw_breakpoints[nb_hw_breakpoints];
855 size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
857 (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
859 g_free(hw_breakpoints);
860 hw_breakpoints = NULL;
866 void kvm_arch_remove_all_hw_breakpoints(void)
868 nb_hw_breakpoints = 0;
869 g_free(hw_breakpoints);
870 hw_breakpoints = NULL;
873 void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
877 if (nb_hw_breakpoints > 0) {
878 dbg->arch.nr_hw_bp = nb_hw_breakpoints;
879 dbg->arch.hw_bp = hw_breakpoints;
881 for (i = 0; i < nb_hw_breakpoints; ++i) {
882 hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
883 hw_breakpoints[i].addr);
885 dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
887 dbg->arch.nr_hw_bp = 0;
888 dbg->arch.hw_bp = NULL;
892 void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
896 MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
898 return MEMTXATTRS_UNSPECIFIED;
901 int kvm_arch_process_async_events(CPUState *cs)
906 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
907 struct kvm_s390_interrupt *interrupt)
911 interrupt->type = irq->type;
913 case KVM_S390_INT_VIRTIO:
914 interrupt->parm = irq->u.ext.ext_params;
916 case KVM_S390_INT_PFAULT_INIT:
917 case KVM_S390_INT_PFAULT_DONE:
918 interrupt->parm64 = irq->u.ext.ext_params2;
920 case KVM_S390_PROGRAM_INT:
921 interrupt->parm = irq->u.pgm.code;
923 case KVM_S390_SIGP_SET_PREFIX:
924 interrupt->parm = irq->u.prefix.address;
926 case KVM_S390_INT_SERVICE:
927 interrupt->parm = irq->u.ext.ext_params;
930 interrupt->parm = irq->u.mchk.cr14;
931 interrupt->parm64 = irq->u.mchk.mcic;
933 case KVM_S390_INT_EXTERNAL_CALL:
934 interrupt->parm = irq->u.extcall.code;
936 case KVM_S390_INT_EMERGENCY:
937 interrupt->parm = irq->u.emerg.code;
939 case KVM_S390_SIGP_STOP:
940 case KVM_S390_RESTART:
941 break; /* These types have no parameters */
942 case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
943 interrupt->parm = irq->u.io.subchannel_id << 16;
944 interrupt->parm |= irq->u.io.subchannel_nr;
945 interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
946 interrupt->parm64 |= irq->u.io.io_int_word;
955 static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
957 struct kvm_s390_interrupt kvmint = {};
960 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
962 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
966 r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
968 fprintf(stderr, "KVM failed to inject interrupt\n");
973 void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
975 CPUState *cs = CPU(cpu);
979 r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
983 error_report("KVM failed to inject interrupt %llx", irq->type);
987 inject_vcpu_irq_legacy(cs, irq);
990 static void __kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
992 struct kvm_s390_interrupt kvmint = {};
995 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
997 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
1001 r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
1003 fprintf(stderr, "KVM failed to inject interrupt\n");
1008 void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
1010 static bool use_flic = true;
1014 r = kvm_s390_inject_flic(irq);
1022 __kvm_s390_floating_interrupt(irq);
1025 void kvm_s390_service_interrupt(uint32_t parm)
1027 struct kvm_s390_irq irq = {
1028 .type = KVM_S390_INT_SERVICE,
1029 .u.ext.ext_params = parm,
1032 kvm_s390_floating_interrupt(&irq);
1035 void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code)
1037 struct kvm_s390_irq irq = {
1038 .type = KVM_S390_PROGRAM_INT,
1042 kvm_s390_vcpu_interrupt(cpu, &irq);
1045 void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
1047 struct kvm_s390_irq irq = {
1048 .type = KVM_S390_PROGRAM_INT,
1050 .u.pgm.trans_exc_code = te_code,
1051 .u.pgm.exc_access_id = te_code & 3,
1054 kvm_s390_vcpu_interrupt(cpu, &irq);
1057 static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
1060 CPUS390XState *env = &cpu->env;
1065 cpu_synchronize_state(CPU(cpu));
1066 sccb = env->regs[ipbh0 & 0xf];
1067 code = env->regs[(ipbh0 & 0xf0) >> 4];
1069 r = sclp_service_call(env, sccb, code);
1071 kvm_s390_program_interrupt(cpu, -r);
1079 static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1081 CPUS390XState *env = &cpu->env;
1083 uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
1085 cpu_synchronize_state(CPU(cpu));
1089 ioinst_handle_xsch(cpu, env->regs[1]);
1092 ioinst_handle_csch(cpu, env->regs[1]);
1095 ioinst_handle_hsch(cpu, env->regs[1]);
1098 ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb);
1101 ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb);
1104 ioinst_handle_stcrw(cpu, run->s390_sieic.ipb);
1107 ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb);
1110 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1111 fprintf(stderr, "Spurious tsch intercept\n");
1114 ioinst_handle_chsc(cpu, run->s390_sieic.ipb);
1117 /* This should have been handled by kvm already. */
1118 fprintf(stderr, "Spurious tpi intercept\n");
1121 ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
1122 run->s390_sieic.ipb);
1125 ioinst_handle_rsch(cpu, env->regs[1]);
1128 ioinst_handle_rchp(cpu, env->regs[1]);
1131 /* We do not provide this instruction, it is suppressed. */
1134 ioinst_handle_sal(cpu, env->regs[1]);
1137 /* Not provided, set CC = 3 for subchannel not operational */
1140 case PRIV_B2_SCLP_CALL:
1141 rc = kvm_sclp_service_call(cpu, run, ipbh0);
1145 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
1152 static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
1155 CPUS390XState *env = &cpu->env;
1156 uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
1157 uint32_t base2 = run->s390_sieic.ipb >> 28;
1158 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1159 ((run->s390_sieic.ipb & 0xff00) << 4);
1161 if (disp2 & 0x80000) {
1162 disp2 += 0xfff00000;
1168 return (base2 ? env->regs[base2] : 0) +
1169 (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
1172 static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
1175 CPUS390XState *env = &cpu->env;
1176 uint32_t base2 = run->s390_sieic.ipb >> 28;
1177 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1178 ((run->s390_sieic.ipb & 0xff00) << 4);
1180 if (disp2 & 0x80000) {
1181 disp2 += 0xfff00000;
1187 return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
1190 static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
1192 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1194 if (s390_has_feat(S390_FEAT_ZPCI)) {
1195 return clp_service_call(cpu, r2);
1201 static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
1203 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1204 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1206 if (s390_has_feat(S390_FEAT_ZPCI)) {
1207 return pcilg_service_call(cpu, r1, r2);
1213 static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
1215 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1216 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1218 if (s390_has_feat(S390_FEAT_ZPCI)) {
1219 return pcistg_service_call(cpu, r1, r2);
1225 static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1227 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1231 if (s390_has_feat(S390_FEAT_ZPCI)) {
1232 cpu_synchronize_state(CPU(cpu));
1233 fiba = get_base_disp_rxy(cpu, run, &ar);
1235 return stpcifc_service_call(cpu, r1, fiba, ar);
1241 static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
1243 CPUS390XState *env = &cpu->env;
1244 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1245 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1250 cpu_synchronize_state(CPU(cpu));
1251 mode = env->regs[r1] & 0xffff;
1252 isc = (env->regs[r3] >> 27) & 0x7;
1253 r = css_do_sic(env, isc, mode);
1255 kvm_s390_program_interrupt(cpu, -r);
1261 static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
1263 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1264 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1266 if (s390_has_feat(S390_FEAT_ZPCI)) {
1267 return rpcit_service_call(cpu, r1, r2);
1273 static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
1275 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1276 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1280 if (s390_has_feat(S390_FEAT_ZPCI)) {
1281 cpu_synchronize_state(CPU(cpu));
1282 gaddr = get_base_disp_rsy(cpu, run, &ar);
1284 return pcistb_service_call(cpu, r1, r3, gaddr, ar);
1290 static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1292 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1296 if (s390_has_feat(S390_FEAT_ZPCI)) {
1297 cpu_synchronize_state(CPU(cpu));
1298 fiba = get_base_disp_rxy(cpu, run, &ar);
1300 return mpcifc_service_call(cpu, r1, fiba, ar);
1306 static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1312 r = kvm_clp_service_call(cpu, run);
1314 case PRIV_B9_PCISTG:
1315 r = kvm_pcistg_service_call(cpu, run);
1318 r = kvm_pcilg_service_call(cpu, run);
1321 r = kvm_rpcit_service_call(cpu, run);
1324 /* just inject exception */
1329 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
1336 static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1341 case PRIV_EB_PCISTB:
1342 r = kvm_pcistb_service_call(cpu, run);
1345 r = kvm_sic_service_call(cpu, run);
1348 /* just inject exception */
1353 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
1360 static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1365 case PRIV_E3_MPCIFC:
1366 r = kvm_mpcifc_service_call(cpu, run);
1368 case PRIV_E3_STPCIFC:
1369 r = kvm_stpcifc_service_call(cpu, run);
1373 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
1380 static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
1382 CPUS390XState *env = &cpu->env;
1385 cpu_synchronize_state(CPU(cpu));
1386 ret = s390_virtio_hypercall(env);
1387 if (ret == -EINVAL) {
1388 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1395 static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
1400 cpu_synchronize_state(CPU(cpu));
1401 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1402 r3 = run->s390_sieic.ipa & 0x000f;
1403 rc = handle_diag_288(&cpu->env, r1, r3);
1405 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1409 static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
1413 cpu_synchronize_state(CPU(cpu));
1414 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1415 r3 = run->s390_sieic.ipa & 0x000f;
1416 handle_diag_308(&cpu->env, r1, r3);
1419 static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
1421 CPUS390XState *env = &cpu->env;
1424 cpu_synchronize_state(CPU(cpu));
1426 pc = env->psw.addr - sw_bp_ilen;
1427 if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
1435 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1437 static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
1443 * For any diagnose call we support, bits 48-63 of the resulting
1444 * address specify the function code; the remainder is ignored.
1446 func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
1447 switch (func_code) {
1448 case DIAG_TIMEREVENT:
1449 kvm_handle_diag_288(cpu, run);
1452 kvm_handle_diag_308(cpu, run);
1454 case DIAG_KVM_HYPERCALL:
1455 r = handle_hypercall(cpu, run);
1457 case DIAG_KVM_BREAKPOINT:
1458 r = handle_sw_breakpoint(cpu, run);
1461 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
1462 kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
1469 typedef struct SigpInfo {
1472 uint64_t *status_reg;
1475 static void set_sigp_status(SigpInfo *si, uint64_t status)
1477 *si->status_reg &= 0xffffffff00000000ULL;
1478 *si->status_reg |= status;
1479 si->cc = SIGP_CC_STATUS_STORED;
1482 static void sigp_start(CPUState *cs, run_on_cpu_data arg)
1484 S390CPU *cpu = S390_CPU(cs);
1485 SigpInfo *si = arg.host_ptr;
1487 if (s390_cpu_get_state(cpu) != CPU_STATE_STOPPED) {
1488 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1492 s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
1493 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1496 static void sigp_stop(CPUState *cs, run_on_cpu_data arg)
1498 S390CPU *cpu = S390_CPU(cs);
1499 SigpInfo *si = arg.host_ptr;
1500 struct kvm_s390_irq irq = {
1501 .type = KVM_S390_SIGP_STOP,
1504 if (s390_cpu_get_state(cpu) != CPU_STATE_OPERATING) {
1505 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1509 /* disabled wait - sleeping in user space */
1511 s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
1513 /* execute the stop function */
1514 cpu->env.sigp_order = SIGP_STOP;
1515 kvm_s390_vcpu_interrupt(cpu, &irq);
1517 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1520 #define ADTL_GS_OFFSET 1024 /* offset of GS data in adtl save area */
1521 #define ADTL_GS_MIN_SIZE 2048 /* minimal size of adtl save area for GS */
1522 static int do_store_adtl_status(S390CPU *cpu, hwaddr addr, hwaddr len)
1527 mem = cpu_physical_memory_map(addr, &save, 1);
1532 cpu_physical_memory_unmap(mem, len, 1, 0);
1536 if (s390_has_feat(S390_FEAT_VECTOR)) {
1537 memcpy(mem, &cpu->env.vregs, 512);
1539 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE) && len >= ADTL_GS_MIN_SIZE) {
1540 memcpy(mem + ADTL_GS_OFFSET, &cpu->env.gscb, 32);
1543 cpu_physical_memory_unmap(mem, len, 1, len);
1548 #define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1549 #define SAVE_AREA_SIZE 512
1550 static int kvm_s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
1552 static const uint8_t ar_id = 1;
1553 uint64_t ckc = cpu->env.ckc >> 8;
1556 hwaddr len = SAVE_AREA_SIZE;
1558 mem = cpu_physical_memory_map(addr, &len, 1);
1562 if (len != SAVE_AREA_SIZE) {
1563 cpu_physical_memory_unmap(mem, len, 1, 0);
1568 cpu_physical_memory_write(offsetof(LowCore, ar_access_id), &ar_id, 1);
1570 for (i = 0; i < 16; ++i) {
1571 *((uint64_t *)mem + i) = get_freg(&cpu->env, i)->ll;
1573 memcpy(mem + 128, &cpu->env.regs, 128);
1574 memcpy(mem + 256, &cpu->env.psw, 16);
1575 memcpy(mem + 280, &cpu->env.psa, 4);
1576 memcpy(mem + 284, &cpu->env.fpc, 4);
1577 memcpy(mem + 292, &cpu->env.todpr, 4);
1578 memcpy(mem + 296, &cpu->env.cputm, 8);
1579 memcpy(mem + 304, &ckc, 8);
1580 memcpy(mem + 320, &cpu->env.aregs, 64);
1581 memcpy(mem + 384, &cpu->env.cregs, 128);
1583 cpu_physical_memory_unmap(mem, len, 1, len);
1588 static void sigp_stop_and_store_status(CPUState *cs, run_on_cpu_data arg)
1590 S390CPU *cpu = S390_CPU(cs);
1591 SigpInfo *si = arg.host_ptr;
1592 struct kvm_s390_irq irq = {
1593 .type = KVM_S390_SIGP_STOP,
1596 /* disabled wait - sleeping in user space */
1597 if (s390_cpu_get_state(cpu) == CPU_STATE_OPERATING && cs->halted) {
1598 s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
1601 switch (s390_cpu_get_state(cpu)) {
1602 case CPU_STATE_OPERATING:
1603 cpu->env.sigp_order = SIGP_STOP_STORE_STATUS;
1604 kvm_s390_vcpu_interrupt(cpu, &irq);
1605 /* store will be performed when handling the stop intercept */
1607 case CPU_STATE_STOPPED:
1608 /* already stopped, just store the status */
1609 cpu_synchronize_state(cs);
1610 kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR, true);
1613 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1616 static void sigp_store_status_at_address(CPUState *cs, run_on_cpu_data arg)
1618 S390CPU *cpu = S390_CPU(cs);
1619 SigpInfo *si = arg.host_ptr;
1620 uint32_t address = si->param & 0x7ffffe00u;
1622 /* cpu has to be stopped */
1623 if (s390_cpu_get_state(cpu) != CPU_STATE_STOPPED) {
1624 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1628 cpu_synchronize_state(cs);
1630 if (kvm_s390_store_status(cpu, address, false)) {
1631 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1634 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1637 #define ADTL_SAVE_LC_MASK 0xfUL
1638 static void sigp_store_adtl_status(CPUState *cs, run_on_cpu_data arg)
1640 S390CPU *cpu = S390_CPU(cs);
1641 SigpInfo *si = arg.host_ptr;
1642 uint8_t lc = si->param & ADTL_SAVE_LC_MASK;
1643 hwaddr addr = si->param & ~ADTL_SAVE_LC_MASK;
1644 hwaddr len = 1UL << (lc ? lc : 10);
1646 if (!s390_has_feat(S390_FEAT_VECTOR) &&
1647 !s390_has_feat(S390_FEAT_GUARDED_STORAGE)) {
1648 set_sigp_status(si, SIGP_STAT_INVALID_ORDER);
1652 /* cpu has to be stopped */
1653 if (s390_cpu_get_state(cpu) != CPU_STATE_STOPPED) {
1654 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1658 /* address must be aligned to length */
1659 if (addr & (len - 1)) {
1660 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1664 /* no GS: only lc == 0 is valid */
1665 if (!s390_has_feat(S390_FEAT_GUARDED_STORAGE) &&
1667 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1671 /* GS: 0, 10, 11, 12 are valid */
1672 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE) &&
1677 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1681 cpu_synchronize_state(cs);
1683 if (do_store_adtl_status(cpu, addr, len)) {
1684 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1687 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1690 static void sigp_restart(CPUState *cs, run_on_cpu_data arg)
1692 S390CPU *cpu = S390_CPU(cs);
1693 SigpInfo *si = arg.host_ptr;
1694 struct kvm_s390_irq irq = {
1695 .type = KVM_S390_RESTART,
1698 switch (s390_cpu_get_state(cpu)) {
1699 case CPU_STATE_STOPPED:
1700 /* the restart irq has to be delivered prior to any other pending irq */
1701 cpu_synchronize_state(cs);
1702 do_restart_interrupt(&cpu->env);
1703 s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
1705 case CPU_STATE_OPERATING:
1706 kvm_s390_vcpu_interrupt(cpu, &irq);
1709 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1712 int kvm_s390_cpu_restart(S390CPU *cpu)
1716 run_on_cpu(CPU(cpu), sigp_restart, RUN_ON_CPU_HOST_PTR(&si));
1717 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu->env);
1721 static void sigp_initial_cpu_reset(CPUState *cs, run_on_cpu_data arg)
1723 S390CPU *cpu = S390_CPU(cs);
1724 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
1725 SigpInfo *si = arg.host_ptr;
1727 cpu_synchronize_state(cs);
1728 scc->initial_cpu_reset(cs);
1729 cpu_synchronize_post_reset(cs);
1730 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1733 static void sigp_cpu_reset(CPUState *cs, run_on_cpu_data arg)
1735 S390CPU *cpu = S390_CPU(cs);
1736 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
1737 SigpInfo *si = arg.host_ptr;
1739 cpu_synchronize_state(cs);
1741 cpu_synchronize_post_reset(cs);
1742 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1745 static void sigp_set_prefix(CPUState *cs, run_on_cpu_data arg)
1747 S390CPU *cpu = S390_CPU(cs);
1748 SigpInfo *si = arg.host_ptr;
1749 uint32_t addr = si->param & 0x7fffe000u;
1751 cpu_synchronize_state(cs);
1753 if (!address_space_access_valid(&address_space_memory, addr,
1754 sizeof(struct LowCore), false)) {
1755 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1759 /* cpu has to be stopped */
1760 if (s390_cpu_get_state(cpu) != CPU_STATE_STOPPED) {
1761 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1765 cpu->env.psa = addr;
1766 cpu_synchronize_post_init(cs);
1767 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1770 static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order,
1771 uint64_t param, uint64_t *status_reg)
1775 .status_reg = status_reg,
1778 /* cpu available? */
1779 if (dst_cpu == NULL) {
1780 return SIGP_CC_NOT_OPERATIONAL;
1783 /* only resets can break pending orders */
1784 if (dst_cpu->env.sigp_order != 0 &&
1785 order != SIGP_CPU_RESET &&
1786 order != SIGP_INITIAL_CPU_RESET) {
1787 return SIGP_CC_BUSY;
1792 run_on_cpu(CPU(dst_cpu), sigp_start, RUN_ON_CPU_HOST_PTR(&si));
1795 run_on_cpu(CPU(dst_cpu), sigp_stop, RUN_ON_CPU_HOST_PTR(&si));
1798 run_on_cpu(CPU(dst_cpu), sigp_restart, RUN_ON_CPU_HOST_PTR(&si));
1800 case SIGP_STOP_STORE_STATUS:
1801 run_on_cpu(CPU(dst_cpu), sigp_stop_and_store_status, RUN_ON_CPU_HOST_PTR(&si));
1803 case SIGP_STORE_STATUS_ADDR:
1804 run_on_cpu(CPU(dst_cpu), sigp_store_status_at_address, RUN_ON_CPU_HOST_PTR(&si));
1806 case SIGP_STORE_ADTL_STATUS:
1807 run_on_cpu(CPU(dst_cpu), sigp_store_adtl_status, RUN_ON_CPU_HOST_PTR(&si));
1809 case SIGP_SET_PREFIX:
1810 run_on_cpu(CPU(dst_cpu), sigp_set_prefix, RUN_ON_CPU_HOST_PTR(&si));
1812 case SIGP_INITIAL_CPU_RESET:
1813 run_on_cpu(CPU(dst_cpu), sigp_initial_cpu_reset, RUN_ON_CPU_HOST_PTR(&si));
1815 case SIGP_CPU_RESET:
1816 run_on_cpu(CPU(dst_cpu), sigp_cpu_reset, RUN_ON_CPU_HOST_PTR(&si));
1819 DPRINTF("KVM: unknown SIGP: 0x%x\n", order);
1820 set_sigp_status(&si, SIGP_STAT_INVALID_ORDER);
1826 static int sigp_set_architecture(S390CPU *cpu, uint32_t param,
1827 uint64_t *status_reg)
1831 bool all_stopped = true;
1833 CPU_FOREACH(cur_cs) {
1834 cur_cpu = S390_CPU(cur_cs);
1836 if (cur_cpu == cpu) {
1839 if (s390_cpu_get_state(cur_cpu) != CPU_STATE_STOPPED) {
1840 all_stopped = false;
1844 *status_reg &= 0xffffffff00000000ULL;
1846 /* Reject set arch order, with czam we're always in z/Arch mode. */
1847 *status_reg |= (all_stopped ? SIGP_STAT_INVALID_PARAMETER :
1848 SIGP_STAT_INCORRECT_STATE);
1849 return SIGP_CC_STATUS_STORED;
1852 static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1854 CPUS390XState *env = &cpu->env;
1855 const uint8_t r1 = ipa1 >> 4;
1856 const uint8_t r3 = ipa1 & 0x0f;
1859 uint64_t *status_reg;
1861 S390CPU *dst_cpu = NULL;
1863 cpu_synchronize_state(CPU(cpu));
1865 /* get order code */
1866 order = decode_basedisp_rs(env, run->s390_sieic.ipb, NULL)
1868 status_reg = &env->regs[r1];
1869 param = (r1 % 2) ? env->regs[r1] : env->regs[r1 + 1];
1871 if (qemu_mutex_trylock(&qemu_sigp_mutex)) {
1878 ret = sigp_set_architecture(cpu, param, status_reg);
1881 /* all other sigp orders target a single vcpu */
1882 dst_cpu = s390_cpu_addr2state(env->regs[r3]);
1883 ret = handle_sigp_single_dst(dst_cpu, order, param, status_reg);
1885 qemu_mutex_unlock(&qemu_sigp_mutex);
1888 trace_kvm_sigp_finished(order, CPU(cpu)->cpu_index,
1889 dst_cpu ? CPU(dst_cpu)->cpu_index : -1, ret);
1899 static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
1901 unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
1902 uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
1905 DPRINTF("handle_instruction 0x%x 0x%x\n",
1906 run->s390_sieic.ipa, run->s390_sieic.ipb);
1909 r = handle_b2(cpu, run, ipa1);
1912 r = handle_b9(cpu, run, ipa1);
1915 r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
1918 r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
1921 r = handle_diag(cpu, run, run->s390_sieic.ipb);
1924 r = handle_sigp(cpu, run, ipa1);
1930 kvm_s390_program_interrupt(cpu, PGM_OPERATION);
1936 static bool is_special_wait_psw(CPUState *cs)
1938 /* signal quiesce */
1939 return cs->kvm_run->psw_addr == 0xfffUL;
1942 static void unmanageable_intercept(S390CPU *cpu, const char *str, int pswoffset)
1944 CPUState *cs = CPU(cpu);
1946 error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1947 str, cs->cpu_index, ldq_phys(cs->as, cpu->env.psa + pswoffset),
1948 ldq_phys(cs->as, cpu->env.psa + pswoffset + 8));
1950 qemu_system_guest_panicked(NULL);
1953 /* try to detect pgm check loops */
1954 static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
1956 CPUState *cs = CPU(cpu);
1959 cpu_synchronize_state(cs);
1960 newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
1961 offsetof(LowCore, program_new_psw));
1962 newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
1963 offsetof(LowCore, program_new_psw) + 8);
1964 oldpsw.mask = run->psw_mask;
1965 oldpsw.addr = run->psw_addr;
1967 * Avoid endless loops of operation exceptions, if the pgm new
1968 * PSW will cause a new operation exception.
1969 * The heuristic checks if the pgm new psw is within 6 bytes before
1970 * the faulting psw address (with same DAT, AS settings) and the
1971 * new psw is not a wait psw and the fault was not triggered by
1972 * problem state. In that case go into crashed state.
1975 if (oldpsw.addr - newpsw.addr <= 6 &&
1976 !(newpsw.mask & PSW_MASK_WAIT) &&
1977 !(oldpsw.mask & PSW_MASK_PSTATE) &&
1978 (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&
1979 (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) {
1980 unmanageable_intercept(cpu, "operation exception loop",
1981 offsetof(LowCore, program_new_psw));
1987 static int handle_intercept(S390CPU *cpu)
1989 CPUState *cs = CPU(cpu);
1990 struct kvm_run *run = cs->kvm_run;
1991 int icpt_code = run->s390_sieic.icptcode;
1994 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code,
1995 (long)cs->kvm_run->psw_addr);
1996 switch (icpt_code) {
1997 case ICPT_INSTRUCTION:
1998 r = handle_instruction(cpu, run);
2001 unmanageable_intercept(cpu, "program interrupt",
2002 offsetof(LowCore, program_new_psw));
2006 unmanageable_intercept(cpu, "external interrupt",
2007 offsetof(LowCore, external_new_psw));
2011 /* disabled wait, since enabled wait is handled in kernel */
2012 cpu_synchronize_state(cs);
2013 if (s390_cpu_halt(cpu) == 0) {
2014 if (is_special_wait_psw(cs)) {
2015 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
2017 qemu_system_guest_panicked(NULL);
2023 if (s390_cpu_set_state(CPU_STATE_STOPPED, cpu) == 0) {
2024 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
2026 if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
2027 kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR,
2030 cpu->env.sigp_order = 0;
2034 /* check for break points */
2035 r = handle_sw_breakpoint(cpu, run);
2037 /* Then check for potential pgm check loops */
2038 r = handle_oper_loop(cpu, run);
2040 kvm_s390_program_interrupt(cpu, PGM_OPERATION);
2044 case ICPT_SOFT_INTERCEPT:
2045 fprintf(stderr, "KVM unimplemented icpt SOFT\n");
2049 fprintf(stderr, "KVM unimplemented icpt IO\n");
2053 fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
2061 static int handle_tsch(S390CPU *cpu)
2063 CPUState *cs = CPU(cpu);
2064 struct kvm_run *run = cs->kvm_run;
2067 cpu_synchronize_state(cs);
2069 ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb);
2073 * If an I/O interrupt had been dequeued, we have to reinject it.
2075 if (run->s390_tsch.dequeued) {
2076 kvm_s390_io_interrupt(run->s390_tsch.subchannel_id,
2077 run->s390_tsch.subchannel_nr,
2078 run->s390_tsch.io_int_parm,
2079 run->s390_tsch.io_int_word);
2086 static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
2088 struct sysib_322 sysib;
2091 if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
2094 /* Shift the stack of Extended Names to prepare for our own data */
2095 memmove(&sysib.ext_names[1], &sysib.ext_names[0],
2096 sizeof(sysib.ext_names[0]) * (sysib.count - 1));
2097 /* First virt level, that doesn't provide Ext Names delimits stack. It is
2098 * assumed it's not capable of managing Extended Names for lower levels.
2100 for (del = 1; del < sysib.count; del++) {
2101 if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
2105 if (del < sysib.count) {
2106 memset(sysib.ext_names[del], 0,
2107 sizeof(sysib.ext_names[0]) * (sysib.count - del));
2109 /* Insert short machine name in EBCDIC, padded with blanks */
2111 memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
2112 ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
2113 strlen(qemu_name)));
2115 sysib.vm[0].ext_name_encoding = 2; /* 2 = UTF-8 */
2116 memset(sysib.ext_names[0], 0, sizeof(sysib.ext_names[0]));
2117 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
2118 * considered by s390 as not capable of providing any Extended Name.
2119 * Therefore if no name was specified on qemu invocation, we go with the
2120 * same "KVMguest" default, which KVM has filled into short name field.
2123 strncpy((char *)sysib.ext_names[0], qemu_name,
2124 sizeof(sysib.ext_names[0]));
2126 strcpy((char *)sysib.ext_names[0], "KVMguest");
2129 memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid));
2131 s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
2134 static int handle_stsi(S390CPU *cpu)
2136 CPUState *cs = CPU(cpu);
2137 struct kvm_run *run = cs->kvm_run;
2139 switch (run->s390_stsi.fc) {
2141 if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
2144 /* Only sysib 3.2.2 needs post-handling for now. */
2145 insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
2152 static int kvm_arch_handle_debug_exit(S390CPU *cpu)
2154 CPUState *cs = CPU(cpu);
2155 struct kvm_run *run = cs->kvm_run;
2158 struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
2160 switch (arch_info->type) {
2161 case KVM_HW_WP_WRITE:
2162 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
2163 cs->watchpoint_hit = &hw_watchpoint;
2164 hw_watchpoint.vaddr = arch_info->addr;
2165 hw_watchpoint.flags = BP_MEM_WRITE;
2170 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
2174 case KVM_SINGLESTEP:
2175 if (cs->singlestep_enabled) {
2186 int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
2188 S390CPU *cpu = S390_CPU(cs);
2191 qemu_mutex_lock_iothread();
2193 switch (run->exit_reason) {
2194 case KVM_EXIT_S390_SIEIC:
2195 ret = handle_intercept(cpu);
2197 case KVM_EXIT_S390_RESET:
2198 s390_reipl_request();
2200 case KVM_EXIT_S390_TSCH:
2201 ret = handle_tsch(cpu);
2203 case KVM_EXIT_S390_STSI:
2204 ret = handle_stsi(cpu);
2206 case KVM_EXIT_DEBUG:
2207 ret = kvm_arch_handle_debug_exit(cpu);
2210 fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
2213 qemu_mutex_unlock_iothread();
2216 ret = EXCP_INTERRUPT;
2221 bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
2226 void kvm_s390_io_interrupt(uint16_t subchannel_id,
2227 uint16_t subchannel_nr, uint32_t io_int_parm,
2228 uint32_t io_int_word)
2230 struct kvm_s390_irq irq = {
2231 .u.io.subchannel_id = subchannel_id,
2232 .u.io.subchannel_nr = subchannel_nr,
2233 .u.io.io_int_parm = io_int_parm,
2234 .u.io.io_int_word = io_int_word,
2237 if (io_int_word & IO_INT_WORD_AI) {
2238 irq.type = KVM_S390_INT_IO(1, 0, 0, 0);
2240 irq.type = KVM_S390_INT_IO(0, (subchannel_id & 0xff00) >> 8,
2241 (subchannel_id & 0x0006),
2244 kvm_s390_floating_interrupt(&irq);
2247 static uint64_t build_channel_report_mcic(void)
2251 /* subclass: indicate channel report pending */
2253 /* subclass modifiers: none */
2254 /* storage errors: none */
2255 /* validity bits: no damage */
2256 MCIC_VB_WP | MCIC_VB_MS | MCIC_VB_PM | MCIC_VB_IA | MCIC_VB_FP |
2257 MCIC_VB_GR | MCIC_VB_CR | MCIC_VB_ST | MCIC_VB_AR | MCIC_VB_PR |
2258 MCIC_VB_FC | MCIC_VB_CT | MCIC_VB_CC;
2259 if (s390_has_feat(S390_FEAT_VECTOR)) {
2262 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE)) {
2268 void kvm_s390_crw_mchk(void)
2270 struct kvm_s390_irq irq = {
2271 .type = KVM_S390_MCHK,
2272 .u.mchk.cr14 = 1 << 28,
2273 .u.mchk.mcic = build_channel_report_mcic(),
2275 kvm_s390_floating_interrupt(&irq);
2278 void kvm_s390_enable_css_support(S390CPU *cpu)
2282 /* Activate host kernel channel subsystem support. */
2283 r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
2287 void kvm_arch_init_irq_routing(KVMState *s)
2290 * Note that while irqchip capabilities generally imply that cpustates
2291 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2292 * have to override the common code kvm_halt_in_kernel_allowed setting.
2294 if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
2295 kvm_gsi_routing_allowed = true;
2296 kvm_halt_in_kernel_allowed = false;
2300 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
2301 int vq, bool assign)
2303 struct kvm_ioeventfd kick = {
2304 .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
2305 KVM_IOEVENTFD_FLAG_DATAMATCH,
2306 .fd = event_notifier_get_fd(notifier),
2311 if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
2315 kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
2317 return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
2320 int kvm_s390_get_memslot_count(KVMState *s)
2322 return kvm_check_extension(s, KVM_CAP_NR_MEMSLOTS);
2325 int kvm_s390_get_ri(void)
2330 int kvm_s390_get_gs(void)
2335 int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
2337 struct kvm_mp_state mp_state = {};
2340 /* the kvm part might not have been initialized yet */
2341 if (CPU(cpu)->kvm_state == NULL) {
2345 switch (cpu_state) {
2346 case CPU_STATE_STOPPED:
2347 mp_state.mp_state = KVM_MP_STATE_STOPPED;
2349 case CPU_STATE_CHECK_STOP:
2350 mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
2352 case CPU_STATE_OPERATING:
2353 mp_state.mp_state = KVM_MP_STATE_OPERATING;
2355 case CPU_STATE_LOAD:
2356 mp_state.mp_state = KVM_MP_STATE_LOAD;
2359 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2364 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
2366 trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
2373 void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
2375 struct kvm_s390_irq_state irq_state;
2376 CPUState *cs = CPU(cpu);
2379 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2383 irq_state.buf = (uint64_t) cpu->irqstate;
2384 irq_state.len = VCPU_IRQ_BUF_SIZE;
2386 bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
2388 cpu->irqstate_saved_size = 0;
2389 error_report("Migration of interrupt state failed");
2393 cpu->irqstate_saved_size = bytes;
2396 int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
2398 CPUState *cs = CPU(cpu);
2399 struct kvm_s390_irq_state irq_state;
2402 if (cpu->irqstate_saved_size == 0) {
2406 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2410 irq_state.buf = (uint64_t) cpu->irqstate;
2411 irq_state.len = cpu->irqstate_saved_size;
2413 r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
2415 error_report("Setting interrupt state failed %d", r);
2420 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
2421 uint64_t address, uint32_t data, PCIDevice *dev)
2423 S390PCIBusDevice *pbdev;
2424 uint32_t idx = data >> ZPCI_MSI_VEC_BITS;
2425 uint32_t vec = data & ZPCI_MSI_VEC_MASK;
2427 pbdev = s390_pci_find_dev_by_idx(s390_get_phb(), idx);
2429 DPRINTF("add_msi_route no dev\n");
2433 pbdev->routes.adapter.ind_offset = vec;
2435 route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
2437 route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
2438 route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
2439 route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
2440 route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset;
2441 route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
2445 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
2446 int vector, PCIDevice *dev)
2451 int kvm_arch_release_virq_post(int virq)
2456 int kvm_arch_msi_data_to_gsi(uint32_t data)
2461 static int query_cpu_subfunc(S390FeatBitmap features)
2463 struct kvm_s390_vm_cpu_subfunc prop;
2464 struct kvm_device_attr attr = {
2465 .group = KVM_S390_VM_CPU_MODEL,
2466 .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC,
2467 .addr = (uint64_t) &prop,
2471 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2477 * We're going to add all subfunctions now, if the corresponding feature
2478 * is available that unlocks the query functions.
2480 s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2481 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2482 s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2484 if (test_bit(S390_FEAT_MSA, features)) {
2485 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2486 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2487 s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2488 s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2489 s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2491 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2492 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2494 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2495 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2496 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2497 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2498 s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2500 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2501 s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2503 if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
2504 s390_add_from_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
2509 static int configure_cpu_subfunc(const S390FeatBitmap features)
2511 struct kvm_s390_vm_cpu_subfunc prop = {};
2512 struct kvm_device_attr attr = {
2513 .group = KVM_S390_VM_CPU_MODEL,
2514 .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC,
2515 .addr = (uint64_t) &prop,
2518 if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2519 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) {
2520 /* hardware support might be missing, IBC will handle most of this */
2524 s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
2525 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
2526 s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
2528 if (test_bit(S390_FEAT_MSA, features)) {
2529 s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
2530 s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
2531 s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
2532 s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
2533 s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
2535 if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
2536 s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
2538 if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
2539 s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
2540 s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
2541 s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
2542 s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
2544 if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
2545 s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
2547 if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
2548 s390_fill_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
2550 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2553 static int kvm_to_feat[][2] = {
2554 { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP },
2555 { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 },
2556 { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO },
2557 { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF },
2558 { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE },
2559 { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS },
2560 { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB },
2561 { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI },
2562 { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS },
2563 { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY },
2564 { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA },
2565 { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
2566 { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
2567 { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS},
2570 static int query_cpu_feat(S390FeatBitmap features)
2572 struct kvm_s390_vm_cpu_feat prop;
2573 struct kvm_device_attr attr = {
2574 .group = KVM_S390_VM_CPU_MODEL,
2575 .attr = KVM_S390_VM_CPU_MACHINE_FEAT,
2576 .addr = (uint64_t) &prop,
2581 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2586 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2587 if (test_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat)) {
2588 set_bit(kvm_to_feat[i][1], features);
2594 static int configure_cpu_feat(const S390FeatBitmap features)
2596 struct kvm_s390_vm_cpu_feat prop = {};
2597 struct kvm_device_attr attr = {
2598 .group = KVM_S390_VM_CPU_MODEL,
2599 .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT,
2600 .addr = (uint64_t) &prop,
2604 for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
2605 if (test_bit(kvm_to_feat[i][1], features)) {
2606 set_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat);
2609 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2612 bool kvm_s390_cpu_models_supported(void)
2614 if (!cpu_model_allowed()) {
2615 /* compatibility machines interfere with the cpu model */
2618 return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2619 KVM_S390_VM_CPU_MACHINE) &&
2620 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2621 KVM_S390_VM_CPU_PROCESSOR) &&
2622 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2623 KVM_S390_VM_CPU_MACHINE_FEAT) &&
2624 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2625 KVM_S390_VM_CPU_PROCESSOR_FEAT) &&
2626 kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
2627 KVM_S390_VM_CPU_MACHINE_SUBFUNC);
2630 void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
2632 struct kvm_s390_vm_cpu_machine prop = {};
2633 struct kvm_device_attr attr = {
2634 .group = KVM_S390_VM_CPU_MODEL,
2635 .attr = KVM_S390_VM_CPU_MACHINE,
2636 .addr = (uint64_t) &prop,
2638 uint16_t unblocked_ibc = 0, cpu_type = 0;
2641 memset(model, 0, sizeof(*model));
2643 if (!kvm_s390_cpu_models_supported()) {
2644 error_setg(errp, "KVM doesn't support CPU models");
2648 /* query the basic cpu model properties */
2649 rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
2651 error_setg(errp, "KVM: Error querying host CPU model: %d", rc);
2655 cpu_type = cpuid_type(prop.cpuid);
2656 if (has_ibc(prop.ibc)) {
2657 model->lowest_ibc = lowest_ibc(prop.ibc);
2658 unblocked_ibc = unblocked_ibc(prop.ibc);
2660 model->cpu_id = cpuid_id(prop.cpuid);
2661 model->cpu_id_format = cpuid_format(prop.cpuid);
2662 model->cpu_ver = 0xff;
2664 /* get supported cpu features indicated via STFL(E) */
2665 s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL,
2666 (uint8_t *) prop.fac_mask);
2667 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2668 if (test_bit(S390_FEAT_STFLE, model->features)) {
2669 set_bit(S390_FEAT_DAT_ENH_2, model->features);
2671 /* get supported cpu features indicated e.g. via SCLP */
2672 rc = query_cpu_feat(model->features);
2674 error_setg(errp, "KVM: Error querying CPU features: %d", rc);
2677 /* get supported cpu subfunctions indicated via query / test bit */
2678 rc = query_cpu_subfunc(model->features);
2680 error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc);
2684 /* with cpu model support, CMM is only indicated if really available */
2685 if (kvm_s390_cmma_available()) {
2686 set_bit(S390_FEAT_CMM, model->features);
2688 /* no cmm -> no cmm nt */
2689 clear_bit(S390_FEAT_CMM_NT, model->features);
2692 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2693 if (pci_available) {
2694 set_bit(S390_FEAT_ZPCI, model->features);
2696 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
2698 if (s390_known_cpu_type(cpu_type)) {
2699 /* we want the exact model, even if some features are missing */
2700 model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc),
2701 ibc_ec_ga(unblocked_ibc), NULL);
2703 /* model unknown, e.g. too new - search using features */
2704 model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc),
2705 ibc_ec_ga(unblocked_ibc),
2709 error_setg(errp, "KVM: host CPU model could not be identified");
2712 /* strip of features that are not part of the maximum model */
2713 bitmap_and(model->features, model->features, model->def->full_feat,
2717 void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp)
2719 struct kvm_s390_vm_cpu_processor prop = {
2722 struct kvm_device_attr attr = {
2723 .group = KVM_S390_VM_CPU_MODEL,
2724 .attr = KVM_S390_VM_CPU_PROCESSOR,
2725 .addr = (uint64_t) &prop,
2730 /* compatibility handling if cpu models are disabled */
2731 if (kvm_s390_cmma_available()) {
2732 kvm_s390_enable_cmma();
2736 if (!kvm_s390_cpu_models_supported()) {
2737 error_setg(errp, "KVM doesn't support CPU models");
2740 prop.cpuid = s390_cpuid_from_cpu_model(model);
2741 prop.ibc = s390_ibc_from_cpu_model(model);
2742 /* configure cpu features indicated via STFL(e) */
2743 s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL,
2744 (uint8_t *) prop.fac_list);
2745 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
2747 error_setg(errp, "KVM: Error configuring the CPU model: %d", rc);
2750 /* configure cpu features indicated e.g. via SCLP */
2751 rc = configure_cpu_feat(model->features);
2753 error_setg(errp, "KVM: Error configuring CPU features: %d", rc);
2756 /* configure cpu subfunctions indicated via query / test bit */
2757 rc = configure_cpu_subfunc(model->features);
2759 error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc);
2762 /* enable CMM via CMMA */
2763 if (test_bit(S390_FEAT_CMM, model->features)) {
2764 kvm_s390_enable_cmma();