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>
28 #include "s390x-internal.h"
29 #include "kvm_s390x.h"
30 #include "sysemu/kvm_int.h"
31 #include "qemu/cutils.h"
32 #include "qapi/error.h"
33 #include "qemu/error-report.h"
34 #include "qemu/timer.h"
35 #include "qemu/units.h"
36 #include "qemu/main-loop.h"
37 #include "qemu/mmap-alloc.h"
39 #include "sysemu/sysemu.h"
40 #include "sysemu/hw_accel.h"
41 #include "sysemu/runstate.h"
42 #include "sysemu/device_tree.h"
43 #include "exec/gdbstub.h"
44 #include "exec/ram_addr.h"
46 #include "hw/s390x/s390-pci-inst.h"
47 #include "hw/s390x/s390-pci-bus.h"
48 #include "hw/s390x/ipl.h"
49 #include "hw/s390x/ebcdic.h"
50 #include "exec/memattrs.h"
51 #include "hw/s390x/s390-virtio-ccw.h"
52 #include "hw/s390x/s390-virtio-hcall.h"
53 #include "target/s390x/kvm/pv.h"
55 #define kvm_vm_check_mem_attr(s, attr) \
56 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
58 #define IPA0_DIAG 0x8300
59 #define IPA0_SIGP 0xae00
60 #define IPA0_B2 0xb200
61 #define IPA0_B9 0xb900
62 #define IPA0_EB 0xeb00
63 #define IPA0_E3 0xe300
65 #define PRIV_B2_SCLP_CALL 0x20
66 #define PRIV_B2_CSCH 0x30
67 #define PRIV_B2_HSCH 0x31
68 #define PRIV_B2_MSCH 0x32
69 #define PRIV_B2_SSCH 0x33
70 #define PRIV_B2_STSCH 0x34
71 #define PRIV_B2_TSCH 0x35
72 #define PRIV_B2_TPI 0x36
73 #define PRIV_B2_SAL 0x37
74 #define PRIV_B2_RSCH 0x38
75 #define PRIV_B2_STCRW 0x39
76 #define PRIV_B2_STCPS 0x3a
77 #define PRIV_B2_RCHP 0x3b
78 #define PRIV_B2_SCHM 0x3c
79 #define PRIV_B2_CHSC 0x5f
80 #define PRIV_B2_SIGA 0x74
81 #define PRIV_B2_XSCH 0x76
83 #define PRIV_EB_SQBS 0x8a
84 #define PRIV_EB_PCISTB 0xd0
85 #define PRIV_EB_SIC 0xd1
87 #define PRIV_B9_EQBS 0x9c
88 #define PRIV_B9_CLP 0xa0
89 #define PRIV_B9_PCISTG 0xd0
90 #define PRIV_B9_PCILG 0xd2
91 #define PRIV_B9_RPCIT 0xd3
93 #define PRIV_E3_MPCIFC 0xd0
94 #define PRIV_E3_STPCIFC 0xd4
96 #define DIAG_TIMEREVENT 0x288
97 #define DIAG_IPL 0x308
98 #define DIAG_SET_CONTROL_PROGRAM_CODES 0x318
99 #define DIAG_KVM_HYPERCALL 0x500
100 #define DIAG_KVM_BREAKPOINT 0x501
102 #define ICPT_INSTRUCTION 0x04
103 #define ICPT_PROGRAM 0x08
104 #define ICPT_EXT_INT 0x14
105 #define ICPT_WAITPSW 0x1c
106 #define ICPT_SOFT_INTERCEPT 0x24
107 #define ICPT_CPU_STOP 0x28
108 #define ICPT_OPEREXC 0x2c
110 #define ICPT_PV_INSTR 0x68
111 #define ICPT_PV_INSTR_NOTIFICATION 0x6c
113 #define NR_LOCAL_IRQS 32
115 * Needs to be big enough to contain max_cpus emergency signals
116 * and in addition NR_LOCAL_IRQS interrupts
118 #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
119 (max_cpus + NR_LOCAL_IRQS))
121 * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
122 * as the dirty bitmap must be managed by bitops that take an int as
123 * position indicator. This would end at an unaligned address
124 * (0x7fffff00000). As future variants might provide larger pages
125 * and to make all addresses properly aligned, let us split at 4TB.
127 #define KVM_SLOT_MAX_BYTES (4UL * TiB)
129 static CPUWatchpoint hw_watchpoint
;
131 * We don't use a list because this structure is also used to transmit the
132 * hardware breakpoints to the kernel.
134 static struct kvm_hw_breakpoint
*hw_breakpoints
;
135 static int nb_hw_breakpoints
;
137 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
141 static int cap_sync_regs
;
142 static int cap_async_pf
;
143 static int cap_mem_op
;
144 static int cap_mem_op_extension
;
145 static int cap_s390_irq
;
147 static int cap_hpage_1m
;
148 static int cap_vcpu_resets
;
149 static int cap_protected
;
150 static int cap_zpci_op
;
151 static int cap_protected_dump
;
153 static bool mem_op_storage_key_support
;
155 static int active_cmma
;
157 static int kvm_s390_query_mem_limit(uint64_t *memory_limit
)
159 struct kvm_device_attr attr
= {
160 .group
= KVM_S390_VM_MEM_CTRL
,
161 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
162 .addr
= (uint64_t) memory_limit
,
165 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
168 int kvm_s390_set_mem_limit(uint64_t new_limit
, uint64_t *hw_limit
)
172 struct kvm_device_attr attr
= {
173 .group
= KVM_S390_VM_MEM_CTRL
,
174 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
175 .addr
= (uint64_t) &new_limit
,
178 if (!kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
182 rc
= kvm_s390_query_mem_limit(hw_limit
);
185 } else if (*hw_limit
< new_limit
) {
189 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
192 int kvm_s390_cmma_active(void)
197 static bool kvm_s390_cmma_available(void)
199 static bool initialized
, value
;
203 value
= kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_ENABLE_CMMA
) &&
204 kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_CLR_CMMA
);
209 void kvm_s390_cmma_reset(void)
212 struct kvm_device_attr attr
= {
213 .group
= KVM_S390_VM_MEM_CTRL
,
214 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
217 if (!kvm_s390_cmma_active()) {
221 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
222 trace_kvm_clear_cmma(rc
);
225 static void kvm_s390_enable_cmma(void)
228 struct kvm_device_attr attr
= {
229 .group
= KVM_S390_VM_MEM_CTRL
,
230 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
234 warn_report("CMM will not be enabled because it is not "
235 "compatible with huge memory backings.");
238 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
240 trace_kvm_enable_cmma(rc
);
243 static void kvm_s390_set_attr(uint64_t attr
)
245 struct kvm_device_attr attribute
= {
246 .group
= KVM_S390_VM_CRYPTO
,
250 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
253 error_report("Failed to set crypto device attribute %lu: %s",
254 attr
, strerror(-ret
));
258 static void kvm_s390_init_aes_kw(void)
260 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
262 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
264 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
267 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
268 kvm_s390_set_attr(attr
);
272 static void kvm_s390_init_dea_kw(void)
274 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
276 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
278 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
281 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
282 kvm_s390_set_attr(attr
);
286 void kvm_s390_crypto_reset(void)
288 if (s390_has_feat(S390_FEAT_MSA_EXT_3
)) {
289 kvm_s390_init_aes_kw();
290 kvm_s390_init_dea_kw();
294 void kvm_s390_set_max_pagesize(uint64_t pagesize
, Error
**errp
)
296 if (pagesize
== 4 * KiB
) {
300 if (!hpage_1m_allowed()) {
301 error_setg(errp
, "This QEMU machine does not support huge page "
306 if (pagesize
!= 1 * MiB
) {
307 error_setg(errp
, "Memory backing with 2G pages was specified, "
308 "but KVM does not support this memory backing");
312 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_HPAGE_1M
, 0)) {
313 error_setg(errp
, "Memory backing with 1M pages was specified, "
314 "but KVM does not support this memory backing");
321 int kvm_s390_get_hpage_1m(void)
326 static void ccw_machine_class_foreach(ObjectClass
*oc
, void *opaque
)
328 MachineClass
*mc
= MACHINE_CLASS(oc
);
330 mc
->default_cpu_type
= S390_CPU_TYPE_NAME("host");
333 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
335 object_class_foreach(ccw_machine_class_foreach
, TYPE_S390_CCW_MACHINE
,
338 if (!kvm_check_extension(kvm_state
, KVM_CAP_DEVICE_CTRL
)) {
339 error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - "
340 "please use kernel 3.15 or newer");
343 if (!kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
344 error_report("KVM is missing capability KVM_CAP_S390_COW - "
345 "unsupported environment");
349 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
350 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
351 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
352 cap_mem_op_extension
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP_EXTENSION
);
353 mem_op_storage_key_support
= cap_mem_op_extension
> 0;
354 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
355 cap_vcpu_resets
= kvm_check_extension(s
, KVM_CAP_S390_VCPU_RESETS
);
356 cap_protected
= kvm_check_extension(s
, KVM_CAP_S390_PROTECTED
);
357 cap_zpci_op
= kvm_check_extension(s
, KVM_CAP_S390_ZPCI_OP
);
358 cap_protected_dump
= kvm_check_extension(s
, KVM_CAP_S390_PROTECTED_DUMP
);
360 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
361 kvm_vm_enable_cap(s
, KVM_CAP_S390_VECTOR_REGISTERS
, 0);
362 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
364 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_RI
, 0) == 0) {
368 if (cpu_model_allowed()) {
369 kvm_vm_enable_cap(s
, KVM_CAP_S390_GS
, 0);
373 * The migration interface for ais was introduced with kernel 4.13
374 * but the capability itself had been active since 4.12. As migration
375 * support is considered necessary, we only try to enable this for
376 * newer machine types if KVM_CAP_S390_AIS_MIGRATION is available.
378 if (cpu_model_allowed() && kvm_kernel_irqchip_allowed() &&
379 kvm_check_extension(s
, KVM_CAP_S390_AIS_MIGRATION
)) {
380 kvm_vm_enable_cap(s
, KVM_CAP_S390_AIS
, 0);
383 kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES
);
387 int kvm_arch_irqchip_create(KVMState
*s
)
392 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
394 return cpu
->cpu_index
;
397 int kvm_arch_init_vcpu(CPUState
*cs
)
399 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
400 S390CPU
*cpu
= S390_CPU(cs
);
401 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
402 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus
));
406 int kvm_arch_destroy_vcpu(CPUState
*cs
)
408 S390CPU
*cpu
= S390_CPU(cs
);
410 g_free(cpu
->irqstate
);
411 cpu
->irqstate
= NULL
;
416 static void kvm_s390_reset_vcpu(S390CPU
*cpu
, unsigned long type
)
418 CPUState
*cs
= CPU(cpu
);
421 * The reset call is needed here to reset in-kernel vcpu data that
422 * we can't access directly from QEMU (i.e. with older kernels
423 * which don't support sync_regs/ONE_REG). Before this ioctl
424 * cpu_synchronize_state() is called in common kvm code
427 if (kvm_vcpu_ioctl(cs
, type
)) {
428 error_report("CPU reset failed on CPU %i type %lx",
429 cs
->cpu_index
, type
);
433 void kvm_s390_reset_vcpu_initial(S390CPU
*cpu
)
435 kvm_s390_reset_vcpu(cpu
, KVM_S390_INITIAL_RESET
);
438 void kvm_s390_reset_vcpu_clear(S390CPU
*cpu
)
440 if (cap_vcpu_resets
) {
441 kvm_s390_reset_vcpu(cpu
, KVM_S390_CLEAR_RESET
);
443 kvm_s390_reset_vcpu(cpu
, KVM_S390_INITIAL_RESET
);
447 void kvm_s390_reset_vcpu_normal(S390CPU
*cpu
)
449 if (cap_vcpu_resets
) {
450 kvm_s390_reset_vcpu(cpu
, KVM_S390_NORMAL_RESET
);
454 static int can_sync_regs(CPUState
*cs
, int regs
)
456 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
459 int kvm_arch_put_registers(CPUState
*cs
, int level
)
461 S390CPU
*cpu
= S390_CPU(cs
);
462 CPUS390XState
*env
= &cpu
->env
;
463 struct kvm_sregs sregs
;
464 struct kvm_regs regs
;
465 struct kvm_fpu fpu
= {};
469 /* always save the PSW and the GPRS*/
470 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
471 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
473 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
474 for (i
= 0; i
< 16; i
++) {
475 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
476 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
479 for (i
= 0; i
< 16; i
++) {
480 regs
.gprs
[i
] = env
->regs
[i
];
482 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
488 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
489 for (i
= 0; i
< 32; i
++) {
490 cs
->kvm_run
->s
.regs
.vrs
[i
][0] = env
->vregs
[i
][0];
491 cs
->kvm_run
->s
.regs
.vrs
[i
][1] = env
->vregs
[i
][1];
493 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
494 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_VRS
;
495 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
496 for (i
= 0; i
< 16; i
++) {
497 cs
->kvm_run
->s
.regs
.fprs
[i
] = *get_freg(env
, i
);
499 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
500 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_FPRS
;
503 for (i
= 0; i
< 16; i
++) {
504 fpu
.fprs
[i
] = *get_freg(env
, i
);
508 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
514 /* Do we need to save more than that? */
515 if (level
== KVM_PUT_RUNTIME_STATE
) {
519 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
520 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
521 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
522 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
523 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
524 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
525 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
528 * These ONE_REGS are not protected by a capability. As they are only
529 * necessary for migration we just trace a possible error, but don't
530 * return with an error return code.
532 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
533 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
534 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
535 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
536 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
539 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
540 memcpy(cs
->kvm_run
->s
.regs
.riccb
, env
->riccb
, 64);
541 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_RICCB
;
544 /* pfault parameters */
545 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
546 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
547 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
548 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
549 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
550 } else if (cap_async_pf
) {
551 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
555 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
559 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
565 /* access registers and control registers*/
566 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
567 for (i
= 0; i
< 16; i
++) {
568 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
569 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
571 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
572 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
574 for (i
= 0; i
< 16; i
++) {
575 sregs
.acrs
[i
] = env
->aregs
[i
];
576 sregs
.crs
[i
] = env
->cregs
[i
];
578 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
584 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
585 memcpy(cs
->kvm_run
->s
.regs
.gscb
, env
->gscb
, 32);
586 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GSCB
;
589 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
590 cs
->kvm_run
->s
.regs
.bpbc
= env
->bpbc
;
591 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_BPBC
;
594 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
595 cs
->kvm_run
->s
.regs
.etoken
= env
->etoken
;
596 cs
->kvm_run
->s
.regs
.etoken_extension
= env
->etoken_extension
;
597 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ETOKEN
;
600 if (can_sync_regs(cs
, KVM_SYNC_DIAG318
)) {
601 cs
->kvm_run
->s
.regs
.diag318
= env
->diag318_info
;
602 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_DIAG318
;
605 /* Finally the prefix */
606 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
607 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
608 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
610 /* prefix is only supported via sync regs */
615 int kvm_arch_get_registers(CPUState
*cs
)
617 S390CPU
*cpu
= S390_CPU(cs
);
618 CPUS390XState
*env
= &cpu
->env
;
619 struct kvm_sregs sregs
;
620 struct kvm_regs regs
;
625 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
626 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
629 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
630 for (i
= 0; i
< 16; i
++) {
631 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
634 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
638 for (i
= 0; i
< 16; i
++) {
639 env
->regs
[i
] = regs
.gprs
[i
];
643 /* The ACRS and CRS */
644 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
645 for (i
= 0; i
< 16; i
++) {
646 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
647 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
650 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
654 for (i
= 0; i
< 16; i
++) {
655 env
->aregs
[i
] = sregs
.acrs
[i
];
656 env
->cregs
[i
] = sregs
.crs
[i
];
660 /* Floating point and vector registers */
661 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
662 for (i
= 0; i
< 32; i
++) {
663 env
->vregs
[i
][0] = cs
->kvm_run
->s
.regs
.vrs
[i
][0];
664 env
->vregs
[i
][1] = cs
->kvm_run
->s
.regs
.vrs
[i
][1];
666 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
667 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
668 for (i
= 0; i
< 16; i
++) {
669 *get_freg(env
, i
) = cs
->kvm_run
->s
.regs
.fprs
[i
];
671 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
673 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
677 for (i
= 0; i
< 16; i
++) {
678 *get_freg(env
, i
) = fpu
.fprs
[i
];
684 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
685 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
688 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
689 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
690 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
691 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
692 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
693 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
696 * These ONE_REGS are not protected by a capability. As they are only
697 * necessary for migration we just trace a possible error, but don't
698 * return with an error return code.
700 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
701 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
702 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
703 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
704 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
707 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
708 memcpy(env
->riccb
, cs
->kvm_run
->s
.regs
.riccb
, 64);
711 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
712 memcpy(env
->gscb
, cs
->kvm_run
->s
.regs
.gscb
, 32);
715 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
716 env
->bpbc
= cs
->kvm_run
->s
.regs
.bpbc
;
719 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
720 env
->etoken
= cs
->kvm_run
->s
.regs
.etoken
;
721 env
->etoken_extension
= cs
->kvm_run
->s
.regs
.etoken_extension
;
724 /* pfault parameters */
725 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
726 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
727 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
728 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
729 } else if (cap_async_pf
) {
730 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
734 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
738 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
744 if (can_sync_regs(cs
, KVM_SYNC_DIAG318
)) {
745 env
->diag318_info
= cs
->kvm_run
->s
.regs
.diag318
;
751 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
754 struct kvm_device_attr attr
= {
755 .group
= KVM_S390_VM_TOD
,
756 .attr
= KVM_S390_VM_TOD_LOW
,
757 .addr
= (uint64_t)tod_low
,
760 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
765 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
766 attr
.addr
= (uint64_t)tod_high
;
767 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
770 int kvm_s390_get_clock_ext(uint8_t *tod_high
, uint64_t *tod_low
)
773 struct kvm_s390_vm_tod_clock gtod
;
774 struct kvm_device_attr attr
= {
775 .group
= KVM_S390_VM_TOD
,
776 .attr
= KVM_S390_VM_TOD_EXT
,
777 .addr
= (uint64_t)>od
,
780 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
781 *tod_high
= gtod
.epoch_idx
;
787 int kvm_s390_set_clock(uint8_t tod_high
, uint64_t tod_low
)
790 struct kvm_device_attr attr
= {
791 .group
= KVM_S390_VM_TOD
,
792 .attr
= KVM_S390_VM_TOD_LOW
,
793 .addr
= (uint64_t)&tod_low
,
796 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
801 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
802 attr
.addr
= (uint64_t)&tod_high
;
803 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
806 int kvm_s390_set_clock_ext(uint8_t tod_high
, uint64_t tod_low
)
808 struct kvm_s390_vm_tod_clock gtod
= {
809 .epoch_idx
= tod_high
,
812 struct kvm_device_attr attr
= {
813 .group
= KVM_S390_VM_TOD
,
814 .attr
= KVM_S390_VM_TOD_EXT
,
815 .addr
= (uint64_t)>od
,
818 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
823 * @addr: the logical start address in guest memory
824 * @ar: the access register number
825 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
826 * @len: length that should be transferred
827 * @is_write: true = write, false = read
828 * Returns: 0 on success, non-zero if an exception or error occurred
830 * Use KVM ioctl to read/write from/to guest memory. An access exception
831 * is injected into the vCPU in case of translation errors.
833 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
834 int len
, bool is_write
)
836 struct kvm_s390_mem_op mem_op
= {
838 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
840 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
841 : KVM_S390_MEMOP_LOGICAL_READ
,
842 .buf
= (uint64_t)hostbuf
,
844 .key
= (cpu
->env
.psw
.mask
& PSW_MASK_KEY
) >> PSW_SHIFT_KEY
,
852 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
854 if (mem_op_storage_key_support
) {
855 mem_op
.flags
|= KVM_S390_MEMOP_F_SKEY_PROTECTION
;
858 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
860 warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret
));
865 int kvm_s390_mem_op_pv(S390CPU
*cpu
, uint64_t offset
, void *hostbuf
,
866 int len
, bool is_write
)
868 struct kvm_s390_mem_op mem_op
= {
869 .sida_offset
= offset
,
871 .op
= is_write
? KVM_S390_MEMOP_SIDA_WRITE
872 : KVM_S390_MEMOP_SIDA_READ
,
873 .buf
= (uint64_t)hostbuf
,
877 if (!cap_mem_op
|| !cap_protected
) {
881 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
883 error_report("KVM_S390_MEM_OP failed: %s", strerror(-ret
));
889 static uint8_t const *sw_bp_inst
;
890 static uint8_t sw_bp_ilen
;
892 static void determine_sw_breakpoint_instr(void)
894 /* DIAG 501 is used for sw breakpoints with old kernels */
895 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
896 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
897 static const uint8_t instr_0x0000
[] = {0x00, 0x00};
902 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_USER_INSTR0
, 0)) {
903 sw_bp_inst
= diag_501
;
904 sw_bp_ilen
= sizeof(diag_501
);
905 trace_kvm_sw_breakpoint(4);
907 sw_bp_inst
= instr_0x0000
;
908 sw_bp_ilen
= sizeof(instr_0x0000
);
909 trace_kvm_sw_breakpoint(2);
913 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
915 determine_sw_breakpoint_instr();
917 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
919 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)sw_bp_inst
, sw_bp_ilen
, 1)) {
925 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
929 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sw_bp_ilen
, 0)) {
931 } else if (memcmp(t
, sw_bp_inst
, sw_bp_ilen
)) {
933 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
941 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
946 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
947 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
948 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
949 return &hw_breakpoints
[n
];
956 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
960 if (find_hw_breakpoint(addr
, len
, type
)) {
964 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
966 if (!hw_breakpoints
) {
967 nb_hw_breakpoints
= 0;
968 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
971 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
974 if (!hw_breakpoints
) {
975 nb_hw_breakpoints
= 0;
979 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
980 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
981 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
988 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
989 target_ulong len
, int type
)
992 case GDB_BREAKPOINT_HW
:
995 case GDB_WATCHPOINT_WRITE
:
999 type
= KVM_HW_WP_WRITE
;
1004 return insert_hw_breakpoint(addr
, len
, type
);
1007 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
1008 target_ulong len
, int type
)
1011 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
1017 nb_hw_breakpoints
--;
1018 if (nb_hw_breakpoints
> 0) {
1020 * In order to trim the array, move the last element to the position to
1021 * be removed - if necessary.
1023 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
1024 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
1026 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
1028 g_realloc(hw_breakpoints
, size
);
1030 g_free(hw_breakpoints
);
1031 hw_breakpoints
= NULL
;
1037 void kvm_arch_remove_all_hw_breakpoints(void)
1039 nb_hw_breakpoints
= 0;
1040 g_free(hw_breakpoints
);
1041 hw_breakpoints
= NULL
;
1044 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
1048 if (nb_hw_breakpoints
> 0) {
1049 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
1050 dbg
->arch
.hw_bp
= hw_breakpoints
;
1052 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
1053 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
1054 hw_breakpoints
[i
].addr
);
1056 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
1058 dbg
->arch
.nr_hw_bp
= 0;
1059 dbg
->arch
.hw_bp
= NULL
;
1063 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
1067 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
1069 return MEMTXATTRS_UNSPECIFIED
;
1072 int kvm_arch_process_async_events(CPUState
*cs
)
1077 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
1078 struct kvm_s390_interrupt
*interrupt
)
1082 interrupt
->type
= irq
->type
;
1083 switch (irq
->type
) {
1084 case KVM_S390_INT_VIRTIO
:
1085 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1087 case KVM_S390_INT_PFAULT_INIT
:
1088 case KVM_S390_INT_PFAULT_DONE
:
1089 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
1091 case KVM_S390_PROGRAM_INT
:
1092 interrupt
->parm
= irq
->u
.pgm
.code
;
1094 case KVM_S390_SIGP_SET_PREFIX
:
1095 interrupt
->parm
= irq
->u
.prefix
.address
;
1097 case KVM_S390_INT_SERVICE
:
1098 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1101 interrupt
->parm
= irq
->u
.mchk
.cr14
;
1102 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
1104 case KVM_S390_INT_EXTERNAL_CALL
:
1105 interrupt
->parm
= irq
->u
.extcall
.code
;
1107 case KVM_S390_INT_EMERGENCY
:
1108 interrupt
->parm
= irq
->u
.emerg
.code
;
1110 case KVM_S390_SIGP_STOP
:
1111 case KVM_S390_RESTART
:
1112 break; /* These types have no parameters */
1113 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1114 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
1115 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
1116 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
1117 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
1126 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
1128 struct kvm_s390_interrupt kvmint
= {};
1131 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1133 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1137 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
1139 fprintf(stderr
, "KVM failed to inject interrupt\n");
1144 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
1146 CPUState
*cs
= CPU(cpu
);
1150 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
1154 error_report("KVM failed to inject interrupt %llx", irq
->type
);
1158 inject_vcpu_irq_legacy(cs
, irq
);
1161 void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq
*irq
)
1163 struct kvm_s390_interrupt kvmint
= {};
1166 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1168 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1172 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
1174 fprintf(stderr
, "KVM failed to inject interrupt\n");
1179 void kvm_s390_program_interrupt(S390CPU
*cpu
, uint16_t code
)
1181 struct kvm_s390_irq irq
= {
1182 .type
= KVM_S390_PROGRAM_INT
,
1185 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
1187 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1190 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
1192 struct kvm_s390_irq irq
= {
1193 .type
= KVM_S390_PROGRAM_INT
,
1195 .u
.pgm
.trans_exc_code
= te_code
,
1196 .u
.pgm
.exc_access_id
= te_code
& 3,
1199 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1202 static void kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
1205 CPUS390XState
*env
= &cpu
->env
;
1210 sccb
= env
->regs
[ipbh0
& 0xf];
1211 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
1213 switch (run
->s390_sieic
.icptcode
) {
1214 case ICPT_PV_INSTR_NOTIFICATION
:
1215 g_assert(s390_is_pv());
1216 /* The notification intercepts are currently handled by KVM */
1217 error_report("unexpected SCLP PV notification");
1221 g_assert(s390_is_pv());
1222 sclp_service_call_protected(env
, sccb
, code
);
1223 /* Setting the CC is done by the Ultravisor. */
1225 case ICPT_INSTRUCTION
:
1226 g_assert(!s390_is_pv());
1227 r
= sclp_service_call(env
, sccb
, code
);
1229 kvm_s390_program_interrupt(cpu
, -r
);
1236 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1238 CPUS390XState
*env
= &cpu
->env
;
1240 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
1244 ioinst_handle_xsch(cpu
, env
->regs
[1], RA_IGNORED
);
1247 ioinst_handle_csch(cpu
, env
->regs
[1], RA_IGNORED
);
1250 ioinst_handle_hsch(cpu
, env
->regs
[1], RA_IGNORED
);
1253 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1256 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1259 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1262 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1265 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1266 fprintf(stderr
, "Spurious tsch intercept\n");
1269 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1272 /* This should have been handled by kvm already. */
1273 fprintf(stderr
, "Spurious tpi intercept\n");
1276 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1277 run
->s390_sieic
.ipb
, RA_IGNORED
);
1280 ioinst_handle_rsch(cpu
, env
->regs
[1], RA_IGNORED
);
1283 ioinst_handle_rchp(cpu
, env
->regs
[1], RA_IGNORED
);
1286 /* We do not provide this instruction, it is suppressed. */
1289 ioinst_handle_sal(cpu
, env
->regs
[1], RA_IGNORED
);
1292 /* Not provided, set CC = 3 for subchannel not operational */
1295 case PRIV_B2_SCLP_CALL
:
1296 kvm_sclp_service_call(cpu
, run
, ipbh0
);
1300 trace_kvm_insn_unhandled_priv(ipa1
);
1307 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1310 CPUS390XState
*env
= &cpu
->env
;
1311 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1312 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1313 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1314 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1316 if (disp2
& 0x80000) {
1317 disp2
+= 0xfff00000;
1323 return (base2
? env
->regs
[base2
] : 0) +
1324 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1327 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1330 CPUS390XState
*env
= &cpu
->env
;
1331 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1332 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1333 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1335 if (disp2
& 0x80000) {
1336 disp2
+= 0xfff00000;
1342 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1345 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1347 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1349 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1350 return clp_service_call(cpu
, r2
, RA_IGNORED
);
1356 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1358 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1359 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1361 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1362 return pcilg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1368 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1370 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1371 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1373 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1374 return pcistg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1380 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1382 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1386 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1387 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1389 return stpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1395 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1397 CPUS390XState
*env
= &cpu
->env
;
1398 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1399 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1404 mode
= env
->regs
[r1
] & 0xffff;
1405 isc
= (env
->regs
[r3
] >> 27) & 0x7;
1406 r
= css_do_sic(env
, isc
, mode
);
1408 kvm_s390_program_interrupt(cpu
, -r
);
1414 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1416 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1417 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1419 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1420 return rpcit_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1426 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1428 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1429 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1433 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1434 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1436 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
, RA_IGNORED
);
1442 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1444 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1448 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1449 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1451 return mpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1457 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1463 r
= kvm_clp_service_call(cpu
, run
);
1465 case PRIV_B9_PCISTG
:
1466 r
= kvm_pcistg_service_call(cpu
, run
);
1469 r
= kvm_pcilg_service_call(cpu
, run
);
1472 r
= kvm_rpcit_service_call(cpu
, run
);
1475 /* just inject exception */
1480 trace_kvm_insn_unhandled_priv(ipa1
);
1487 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1492 case PRIV_EB_PCISTB
:
1493 r
= kvm_pcistb_service_call(cpu
, run
);
1496 r
= kvm_sic_service_call(cpu
, run
);
1499 /* just inject exception */
1504 trace_kvm_insn_unhandled_priv(ipbl
);
1511 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1516 case PRIV_E3_MPCIFC
:
1517 r
= kvm_mpcifc_service_call(cpu
, run
);
1519 case PRIV_E3_STPCIFC
:
1520 r
= kvm_stpcifc_service_call(cpu
, run
);
1524 trace_kvm_insn_unhandled_priv(ipbl
);
1531 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1533 CPUS390XState
*env
= &cpu
->env
;
1536 ret
= s390_virtio_hypercall(env
);
1537 if (ret
== -EINVAL
) {
1538 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1545 static void kvm_handle_diag_288(S390CPU
*cpu
, struct kvm_run
*run
)
1550 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1551 r3
= run
->s390_sieic
.ipa
& 0x000f;
1552 rc
= handle_diag_288(&cpu
->env
, r1
, r3
);
1554 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1558 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1562 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1563 r3
= run
->s390_sieic
.ipa
& 0x000f;
1564 handle_diag_308(&cpu
->env
, r1
, r3
, RA_IGNORED
);
1567 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1569 CPUS390XState
*env
= &cpu
->env
;
1572 pc
= env
->psw
.addr
- sw_bp_ilen
;
1573 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1581 void kvm_s390_set_diag318(CPUState
*cs
, uint64_t diag318_info
)
1583 CPUS390XState
*env
= &S390_CPU(cs
)->env
;
1585 /* Feat bit is set only if KVM supports sync for diag318 */
1586 if (s390_has_feat(S390_FEAT_DIAG_318
)) {
1587 env
->diag318_info
= diag318_info
;
1588 cs
->kvm_run
->s
.regs
.diag318
= diag318_info
;
1589 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_DIAG318
;
1591 * diag 318 info is zeroed during a clear reset and
1592 * diag 308 IPL subcodes.
1597 static void handle_diag_318(S390CPU
*cpu
, struct kvm_run
*run
)
1599 uint64_t reg
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1600 uint64_t diag318_info
= run
->s
.regs
.gprs
[reg
];
1604 * DIAG 318 can only be enabled with KVM support. As such, let's
1605 * ensure a guest cannot execute this instruction erroneously.
1607 if (!s390_has_feat(S390_FEAT_DIAG_318
)) {
1608 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1613 run_on_cpu(t
, s390_do_cpu_set_diag318
,
1614 RUN_ON_CPU_HOST_ULONG(diag318_info
));
1618 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1620 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1626 * For any diagnose call we support, bits 48-63 of the resulting
1627 * address specify the function code; the remainder is ignored.
1629 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1630 switch (func_code
) {
1631 case DIAG_TIMEREVENT
:
1632 kvm_handle_diag_288(cpu
, run
);
1635 kvm_handle_diag_308(cpu
, run
);
1637 case DIAG_SET_CONTROL_PROGRAM_CODES
:
1638 handle_diag_318(cpu
, run
);
1640 case DIAG_KVM_HYPERCALL
:
1641 r
= handle_hypercall(cpu
, run
);
1643 case DIAG_KVM_BREAKPOINT
:
1644 r
= handle_sw_breakpoint(cpu
, run
);
1647 trace_kvm_insn_diag(func_code
);
1648 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1655 static int kvm_s390_handle_sigp(S390CPU
*cpu
, uint8_t ipa1
, uint32_t ipb
)
1657 CPUS390XState
*env
= &cpu
->env
;
1658 const uint8_t r1
= ipa1
>> 4;
1659 const uint8_t r3
= ipa1
& 0x0f;
1663 /* get order code */
1664 order
= decode_basedisp_rs(env
, ipb
, NULL
) & SIGP_ORDER_MASK
;
1666 ret
= handle_sigp(env
, order
, r1
, r3
);
1671 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1673 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1674 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1677 trace_kvm_insn(run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1680 r
= handle_b2(cpu
, run
, ipa1
);
1683 r
= handle_b9(cpu
, run
, ipa1
);
1686 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1689 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1692 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1695 r
= kvm_s390_handle_sigp(cpu
, ipa1
, run
->s390_sieic
.ipb
);
1701 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1707 static void unmanageable_intercept(S390CPU
*cpu
, S390CrashReason reason
,
1710 CPUState
*cs
= CPU(cpu
);
1713 cpu
->env
.crash_reason
= reason
;
1714 qemu_system_guest_panicked(cpu_get_crash_info(cs
));
1717 /* try to detect pgm check loops */
1718 static int handle_oper_loop(S390CPU
*cpu
, struct kvm_run
*run
)
1720 CPUState
*cs
= CPU(cpu
);
1723 newpsw
.mask
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1724 offsetof(LowCore
, program_new_psw
));
1725 newpsw
.addr
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1726 offsetof(LowCore
, program_new_psw
) + 8);
1727 oldpsw
.mask
= run
->psw_mask
;
1728 oldpsw
.addr
= run
->psw_addr
;
1730 * Avoid endless loops of operation exceptions, if the pgm new
1731 * PSW will cause a new operation exception.
1732 * The heuristic checks if the pgm new psw is within 6 bytes before
1733 * the faulting psw address (with same DAT, AS settings) and the
1734 * new psw is not a wait psw and the fault was not triggered by
1735 * problem state. In that case go into crashed state.
1738 if (oldpsw
.addr
- newpsw
.addr
<= 6 &&
1739 !(newpsw
.mask
& PSW_MASK_WAIT
) &&
1740 !(oldpsw
.mask
& PSW_MASK_PSTATE
) &&
1741 (newpsw
.mask
& PSW_MASK_ASC
) == (oldpsw
.mask
& PSW_MASK_ASC
) &&
1742 (newpsw
.mask
& PSW_MASK_DAT
) == (oldpsw
.mask
& PSW_MASK_DAT
)) {
1743 unmanageable_intercept(cpu
, S390_CRASH_REASON_OPINT_LOOP
,
1744 offsetof(LowCore
, program_new_psw
));
1750 static int handle_intercept(S390CPU
*cpu
)
1752 CPUState
*cs
= CPU(cpu
);
1753 struct kvm_run
*run
= cs
->kvm_run
;
1754 int icpt_code
= run
->s390_sieic
.icptcode
;
1757 trace_kvm_intercept(icpt_code
, (long)run
->psw_addr
);
1758 switch (icpt_code
) {
1759 case ICPT_INSTRUCTION
:
1761 case ICPT_PV_INSTR_NOTIFICATION
:
1762 r
= handle_instruction(cpu
, run
);
1765 unmanageable_intercept(cpu
, S390_CRASH_REASON_PGMINT_LOOP
,
1766 offsetof(LowCore
, program_new_psw
));
1770 unmanageable_intercept(cpu
, S390_CRASH_REASON_EXTINT_LOOP
,
1771 offsetof(LowCore
, external_new_psw
));
1775 /* disabled wait, since enabled wait is handled in kernel */
1776 s390_handle_wait(cpu
);
1780 do_stop_interrupt(&cpu
->env
);
1784 /* check for break points */
1785 r
= handle_sw_breakpoint(cpu
, run
);
1787 /* Then check for potential pgm check loops */
1788 r
= handle_oper_loop(cpu
, run
);
1790 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1794 case ICPT_SOFT_INTERCEPT
:
1795 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1799 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1803 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1811 static int handle_tsch(S390CPU
*cpu
)
1813 CPUState
*cs
= CPU(cpu
);
1814 struct kvm_run
*run
= cs
->kvm_run
;
1817 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
,
1822 * If an I/O interrupt had been dequeued, we have to reinject it.
1824 if (run
->s390_tsch
.dequeued
) {
1825 s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1826 run
->s390_tsch
.subchannel_nr
,
1827 run
->s390_tsch
.io_int_parm
,
1828 run
->s390_tsch
.io_int_word
);
1835 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
1837 const MachineState
*ms
= MACHINE(qdev_get_machine());
1838 uint16_t conf_cpus
= 0, reserved_cpus
= 0;
1843 s390_cpu_pv_mem_read(cpu
, 0, &sysib
, sizeof(sysib
));
1844 } else if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
1847 /* Shift the stack of Extended Names to prepare for our own data */
1848 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
1849 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
1850 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1851 * assumed it's not capable of managing Extended Names for lower levels.
1853 for (del
= 1; del
< sysib
.count
; del
++) {
1854 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
1858 if (del
< sysib
.count
) {
1859 memset(sysib
.ext_names
[del
], 0,
1860 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
1863 /* count the cpus and split them into configured and reserved ones */
1864 for (i
= 0; i
< ms
->possible_cpus
->len
; i
++) {
1865 if (ms
->possible_cpus
->cpus
[i
].cpu
) {
1871 sysib
.vm
[0].total_cpus
= conf_cpus
+ reserved_cpus
;
1872 sysib
.vm
[0].conf_cpus
= conf_cpus
;
1873 sysib
.vm
[0].reserved_cpus
= reserved_cpus
;
1875 /* Insert short machine name in EBCDIC, padded with blanks */
1877 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
1878 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
1879 strlen(qemu_name
)));
1881 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
1882 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1883 * considered by s390 as not capable of providing any Extended Name.
1884 * Therefore if no name was specified on qemu invocation, we go with the
1885 * same "KVMguest" default, which KVM has filled into short name field.
1887 strpadcpy((char *)sysib
.ext_names
[0],
1888 sizeof(sysib
.ext_names
[0]),
1889 qemu_name
?: "KVMguest", '\0');
1892 memcpy(sysib
.vm
[0].uuid
, &qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
1895 s390_cpu_pv_mem_write(cpu
, 0, &sysib
, sizeof(sysib
));
1897 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
1901 static int handle_stsi(S390CPU
*cpu
)
1903 CPUState
*cs
= CPU(cpu
);
1904 struct kvm_run
*run
= cs
->kvm_run
;
1906 switch (run
->s390_stsi
.fc
) {
1908 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
1911 /* Only sysib 3.2.2 needs post-handling for now. */
1912 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
1919 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1921 CPUState
*cs
= CPU(cpu
);
1922 struct kvm_run
*run
= cs
->kvm_run
;
1925 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1927 switch (arch_info
->type
) {
1928 case KVM_HW_WP_WRITE
:
1929 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1930 cs
->watchpoint_hit
= &hw_watchpoint
;
1931 hw_watchpoint
.vaddr
= arch_info
->addr
;
1932 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1937 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1941 case KVM_SINGLESTEP
:
1942 if (cs
->singlestep_enabled
) {
1953 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1955 S390CPU
*cpu
= S390_CPU(cs
);
1958 qemu_mutex_lock_iothread();
1960 kvm_cpu_synchronize_state(cs
);
1962 switch (run
->exit_reason
) {
1963 case KVM_EXIT_S390_SIEIC
:
1964 ret
= handle_intercept(cpu
);
1966 case KVM_EXIT_S390_RESET
:
1967 s390_ipl_reset_request(cs
, S390_RESET_REIPL
);
1969 case KVM_EXIT_S390_TSCH
:
1970 ret
= handle_tsch(cpu
);
1972 case KVM_EXIT_S390_STSI
:
1973 ret
= handle_stsi(cpu
);
1975 case KVM_EXIT_DEBUG
:
1976 ret
= kvm_arch_handle_debug_exit(cpu
);
1979 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
1982 qemu_mutex_unlock_iothread();
1985 ret
= EXCP_INTERRUPT
;
1990 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
1995 void kvm_s390_enable_css_support(S390CPU
*cpu
)
1999 /* Activate host kernel channel subsystem support. */
2000 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
2004 void kvm_arch_init_irq_routing(KVMState
*s
)
2007 * Note that while irqchip capabilities generally imply that cpustates
2008 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2009 * have to override the common code kvm_halt_in_kernel_allowed setting.
2011 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
2012 kvm_gsi_routing_allowed
= true;
2013 kvm_halt_in_kernel_allowed
= false;
2017 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
2018 int vq
, bool assign
)
2020 struct kvm_ioeventfd kick
= {
2021 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
2022 KVM_IOEVENTFD_FLAG_DATAMATCH
,
2023 .fd
= event_notifier_get_fd(notifier
),
2028 trace_kvm_assign_subch_ioeventfd(kick
.fd
, kick
.addr
, assign
,
2030 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
2034 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
2036 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
2039 int kvm_s390_get_protected_dump(void)
2041 return cap_protected_dump
;
2044 int kvm_s390_get_ri(void)
2049 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
2051 struct kvm_mp_state mp_state
= {};
2054 /* the kvm part might not have been initialized yet */
2055 if (CPU(cpu
)->kvm_state
== NULL
) {
2059 switch (cpu_state
) {
2060 case S390_CPU_STATE_STOPPED
:
2061 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
2063 case S390_CPU_STATE_CHECK_STOP
:
2064 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
2066 case S390_CPU_STATE_OPERATING
:
2067 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
2069 case S390_CPU_STATE_LOAD
:
2070 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
2073 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2078 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
2080 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
2087 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
2089 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
2090 struct kvm_s390_irq_state irq_state
= {
2091 .buf
= (uint64_t) cpu
->irqstate
,
2092 .len
= VCPU_IRQ_BUF_SIZE(max_cpus
),
2094 CPUState
*cs
= CPU(cpu
);
2097 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2101 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
2103 cpu
->irqstate_saved_size
= 0;
2104 error_report("Migration of interrupt state failed");
2108 cpu
->irqstate_saved_size
= bytes
;
2111 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
2113 CPUState
*cs
= CPU(cpu
);
2114 struct kvm_s390_irq_state irq_state
= {
2115 .buf
= (uint64_t) cpu
->irqstate
,
2116 .len
= cpu
->irqstate_saved_size
,
2120 if (cpu
->irqstate_saved_size
== 0) {
2124 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2128 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
2130 error_report("Setting interrupt state failed %d", r
);
2135 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2136 uint64_t address
, uint32_t data
, PCIDevice
*dev
)
2138 S390PCIBusDevice
*pbdev
;
2139 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2142 trace_kvm_msi_route_fixup("no pci device");
2146 pbdev
= s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev
)->id
);
2148 trace_kvm_msi_route_fixup("no zpci device");
2152 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2154 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2155 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2156 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2157 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
+ vec
;
2158 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;
2162 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry
*route
,
2163 int vector
, PCIDevice
*dev
)
2168 int kvm_arch_release_virq_post(int virq
)
2173 int kvm_arch_msi_data_to_gsi(uint32_t data
)
2178 static int query_cpu_subfunc(S390FeatBitmap features
)
2180 struct kvm_s390_vm_cpu_subfunc prop
= {};
2181 struct kvm_device_attr attr
= {
2182 .group
= KVM_S390_VM_CPU_MODEL
,
2183 .attr
= KVM_S390_VM_CPU_MACHINE_SUBFUNC
,
2184 .addr
= (uint64_t) &prop
,
2188 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2194 * We're going to add all subfunctions now, if the corresponding feature
2195 * is available that unlocks the query functions.
2197 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2198 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2199 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2201 if (test_bit(S390_FEAT_MSA
, features
)) {
2202 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2203 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2204 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2205 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2206 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2208 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2209 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2211 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2212 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2213 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2214 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2215 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2217 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2218 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2220 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2221 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2223 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2224 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2226 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2227 s390_add_from_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2229 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2230 s390_add_from_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2235 static int configure_cpu_subfunc(const S390FeatBitmap features
)
2237 struct kvm_s390_vm_cpu_subfunc prop
= {};
2238 struct kvm_device_attr attr
= {
2239 .group
= KVM_S390_VM_CPU_MODEL
,
2240 .attr
= KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
,
2241 .addr
= (uint64_t) &prop
,
2244 if (!kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2245 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
)) {
2246 /* hardware support might be missing, IBC will handle most of this */
2250 s390_fill_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2251 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2252 s390_fill_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2254 if (test_bit(S390_FEAT_MSA
, features
)) {
2255 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2256 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2257 s390_fill_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2258 s390_fill_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2259 s390_fill_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2261 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2262 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2264 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2265 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2266 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2267 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2268 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2270 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2271 s390_fill_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2273 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2274 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2276 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2277 s390_fill_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2279 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2280 s390_fill_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2282 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2283 s390_fill_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2285 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2288 static int kvm_to_feat
[][2] = {
2289 { KVM_S390_VM_CPU_FEAT_ESOP
, S390_FEAT_ESOP
},
2290 { KVM_S390_VM_CPU_FEAT_SIEF2
, S390_FEAT_SIE_F2
},
2291 { KVM_S390_VM_CPU_FEAT_64BSCAO
, S390_FEAT_SIE_64BSCAO
},
2292 { KVM_S390_VM_CPU_FEAT_SIIF
, S390_FEAT_SIE_SIIF
},
2293 { KVM_S390_VM_CPU_FEAT_GPERE
, S390_FEAT_SIE_GPERE
},
2294 { KVM_S390_VM_CPU_FEAT_GSLS
, S390_FEAT_SIE_GSLS
},
2295 { KVM_S390_VM_CPU_FEAT_IB
, S390_FEAT_SIE_IB
},
2296 { KVM_S390_VM_CPU_FEAT_CEI
, S390_FEAT_SIE_CEI
},
2297 { KVM_S390_VM_CPU_FEAT_IBS
, S390_FEAT_SIE_IBS
},
2298 { KVM_S390_VM_CPU_FEAT_SKEY
, S390_FEAT_SIE_SKEY
},
2299 { KVM_S390_VM_CPU_FEAT_CMMA
, S390_FEAT_SIE_CMMA
},
2300 { KVM_S390_VM_CPU_FEAT_PFMFI
, S390_FEAT_SIE_PFMFI
},
2301 { KVM_S390_VM_CPU_FEAT_SIGPIF
, S390_FEAT_SIE_SIGPIF
},
2302 { KVM_S390_VM_CPU_FEAT_KSS
, S390_FEAT_SIE_KSS
},
2305 static int query_cpu_feat(S390FeatBitmap features
)
2307 struct kvm_s390_vm_cpu_feat prop
= {};
2308 struct kvm_device_attr attr
= {
2309 .group
= KVM_S390_VM_CPU_MODEL
,
2310 .attr
= KVM_S390_VM_CPU_MACHINE_FEAT
,
2311 .addr
= (uint64_t) &prop
,
2316 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2321 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2322 if (test_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
)) {
2323 set_bit(kvm_to_feat
[i
][1], features
);
2329 static int configure_cpu_feat(const S390FeatBitmap features
)
2331 struct kvm_s390_vm_cpu_feat prop
= {};
2332 struct kvm_device_attr attr
= {
2333 .group
= KVM_S390_VM_CPU_MODEL
,
2334 .attr
= KVM_S390_VM_CPU_PROCESSOR_FEAT
,
2335 .addr
= (uint64_t) &prop
,
2339 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2340 if (test_bit(kvm_to_feat
[i
][1], features
)) {
2341 set_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
);
2344 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2347 bool kvm_s390_cpu_models_supported(void)
2349 if (!cpu_model_allowed()) {
2350 /* compatibility machines interfere with the cpu model */
2353 return kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2354 KVM_S390_VM_CPU_MACHINE
) &&
2355 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2356 KVM_S390_VM_CPU_PROCESSOR
) &&
2357 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2358 KVM_S390_VM_CPU_MACHINE_FEAT
) &&
2359 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2360 KVM_S390_VM_CPU_PROCESSOR_FEAT
) &&
2361 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2362 KVM_S390_VM_CPU_MACHINE_SUBFUNC
);
2365 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
)
2367 struct kvm_s390_vm_cpu_machine prop
= {};
2368 struct kvm_device_attr attr
= {
2369 .group
= KVM_S390_VM_CPU_MODEL
,
2370 .attr
= KVM_S390_VM_CPU_MACHINE
,
2371 .addr
= (uint64_t) &prop
,
2373 uint16_t unblocked_ibc
= 0, cpu_type
= 0;
2376 memset(model
, 0, sizeof(*model
));
2378 if (!kvm_s390_cpu_models_supported()) {
2379 error_setg(errp
, "KVM doesn't support CPU models");
2383 /* query the basic cpu model properties */
2384 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2386 error_setg(errp
, "KVM: Error querying host CPU model: %d", rc
);
2390 cpu_type
= cpuid_type(prop
.cpuid
);
2391 if (has_ibc(prop
.ibc
)) {
2392 model
->lowest_ibc
= lowest_ibc(prop
.ibc
);
2393 unblocked_ibc
= unblocked_ibc(prop
.ibc
);
2395 model
->cpu_id
= cpuid_id(prop
.cpuid
);
2396 model
->cpu_id_format
= cpuid_format(prop
.cpuid
);
2397 model
->cpu_ver
= 0xff;
2399 /* get supported cpu features indicated via STFL(E) */
2400 s390_add_from_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2401 (uint8_t *) prop
.fac_mask
);
2402 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2403 if (test_bit(S390_FEAT_STFLE
, model
->features
)) {
2404 set_bit(S390_FEAT_DAT_ENH_2
, model
->features
);
2406 /* get supported cpu features indicated e.g. via SCLP */
2407 rc
= query_cpu_feat(model
->features
);
2409 error_setg(errp
, "KVM: Error querying CPU features: %d", rc
);
2412 /* get supported cpu subfunctions indicated via query / test bit */
2413 rc
= query_cpu_subfunc(model
->features
);
2415 error_setg(errp
, "KVM: Error querying CPU subfunctions: %d", rc
);
2419 /* PTFF subfunctions might be indicated although kernel support missing */
2420 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH
, model
->features
)) {
2421 clear_bit(S390_FEAT_PTFF_QSIE
, model
->features
);
2422 clear_bit(S390_FEAT_PTFF_QTOUE
, model
->features
);
2423 clear_bit(S390_FEAT_PTFF_STOE
, model
->features
);
2424 clear_bit(S390_FEAT_PTFF_STOUE
, model
->features
);
2427 /* with cpu model support, CMM is only indicated if really available */
2428 if (kvm_s390_cmma_available()) {
2429 set_bit(S390_FEAT_CMM
, model
->features
);
2431 /* no cmm -> no cmm nt */
2432 clear_bit(S390_FEAT_CMM_NT
, model
->features
);
2435 /* bpb needs kernel support for migration, VSIE and reset */
2436 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_BPB
)) {
2437 clear_bit(S390_FEAT_BPB
, model
->features
);
2441 * If we have support for protected virtualization, indicate
2442 * the protected virtualization IPL unpack facility.
2444 if (cap_protected
) {
2445 set_bit(S390_FEAT_UNPACK
, model
->features
);
2448 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2449 set_bit(S390_FEAT_ZPCI
, model
->features
);
2450 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION
, model
->features
);
2452 if (s390_known_cpu_type(cpu_type
)) {
2453 /* we want the exact model, even if some features are missing */
2454 model
->def
= s390_find_cpu_def(cpu_type
, ibc_gen(unblocked_ibc
),
2455 ibc_ec_ga(unblocked_ibc
), NULL
);
2457 /* model unknown, e.g. too new - search using features */
2458 model
->def
= s390_find_cpu_def(0, ibc_gen(unblocked_ibc
),
2459 ibc_ec_ga(unblocked_ibc
),
2463 error_setg(errp
, "KVM: host CPU model could not be identified");
2466 /* for now, we can only provide the AP feature with HW support */
2467 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
,
2468 KVM_S390_VM_CRYPTO_ENABLE_APIE
)) {
2469 set_bit(S390_FEAT_AP
, model
->features
);
2473 * Extended-Length SCCB is handled entirely within QEMU.
2474 * For PV guests this is completely fenced by the Ultravisor, as Service
2475 * Call error checking and STFLE interpretation are handled via SIE.
2477 set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB
, model
->features
);
2479 if (kvm_check_extension(kvm_state
, KVM_CAP_S390_DIAG318
)) {
2480 set_bit(S390_FEAT_DIAG_318
, model
->features
);
2483 /* strip of features that are not part of the maximum model */
2484 bitmap_and(model
->features
, model
->features
, model
->def
->full_feat
,
2488 static void kvm_s390_configure_apie(bool interpret
)
2490 uint64_t attr
= interpret
? KVM_S390_VM_CRYPTO_ENABLE_APIE
:
2491 KVM_S390_VM_CRYPTO_DISABLE_APIE
;
2493 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
2494 kvm_s390_set_attr(attr
);
2498 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
2500 struct kvm_s390_vm_cpu_processor prop
= {
2503 struct kvm_device_attr attr
= {
2504 .group
= KVM_S390_VM_CPU_MODEL
,
2505 .attr
= KVM_S390_VM_CPU_PROCESSOR
,
2506 .addr
= (uint64_t) &prop
,
2511 /* compatibility handling if cpu models are disabled */
2512 if (kvm_s390_cmma_available()) {
2513 kvm_s390_enable_cmma();
2517 if (!kvm_s390_cpu_models_supported()) {
2518 error_setg(errp
, "KVM doesn't support CPU models");
2521 prop
.cpuid
= s390_cpuid_from_cpu_model(model
);
2522 prop
.ibc
= s390_ibc_from_cpu_model(model
);
2523 /* configure cpu features indicated via STFL(e) */
2524 s390_fill_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2525 (uint8_t *) prop
.fac_list
);
2526 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2528 error_setg(errp
, "KVM: Error configuring the CPU model: %d", rc
);
2531 /* configure cpu features indicated e.g. via SCLP */
2532 rc
= configure_cpu_feat(model
->features
);
2534 error_setg(errp
, "KVM: Error configuring CPU features: %d", rc
);
2537 /* configure cpu subfunctions indicated via query / test bit */
2538 rc
= configure_cpu_subfunc(model
->features
);
2540 error_setg(errp
, "KVM: Error configuring CPU subfunctions: %d", rc
);
2543 /* enable CMM via CMMA */
2544 if (test_bit(S390_FEAT_CMM
, model
->features
)) {
2545 kvm_s390_enable_cmma();
2548 if (test_bit(S390_FEAT_AP
, model
->features
)) {
2549 kvm_s390_configure_apie(true);
2553 void kvm_s390_restart_interrupt(S390CPU
*cpu
)
2555 struct kvm_s390_irq irq
= {
2556 .type
= KVM_S390_RESTART
,
2559 kvm_s390_vcpu_interrupt(cpu
, &irq
);
2562 void kvm_s390_stop_interrupt(S390CPU
*cpu
)
2564 struct kvm_s390_irq irq
= {
2565 .type
= KVM_S390_SIGP_STOP
,
2568 kvm_s390_vcpu_interrupt(cpu
, &irq
);
2571 bool kvm_arch_cpu_check_are_resettable(void)
2576 int kvm_s390_get_zpci_op(void)
2581 void kvm_arch_accel_class_init(ObjectClass
*oc
)