2 * QEMU S390x KVM implementation
4 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
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"
33 #include "kvm_s390x.h"
34 #include "qemu/error-report.h"
35 #include "qemu/timer.h"
36 #include "sysemu/sysemu.h"
37 #include "sysemu/hw_accel.h"
39 #include "sysemu/device_tree.h"
40 #include "qapi/qmp/qjson.h"
41 #include "exec/gdbstub.h"
42 #include "exec/address-spaces.h"
44 #include "qapi-event.h"
45 #include "hw/s390x/s390-pci-inst.h"
46 #include "hw/s390x/s390-pci-bus.h"
47 #include "hw/s390x/ipl.h"
48 #include "hw/s390x/ebcdic.h"
49 #include "exec/memattrs.h"
50 #include "hw/s390x/s390-virtio-ccw.h"
51 #include "hw/s390x/s390-virtio-hcall.h"
57 #define DPRINTF(fmt, ...) do { \
59 fprintf(stderr, fmt, ## __VA_ARGS__); \
63 #define kvm_vm_check_mem_attr(s, attr) \
64 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
66 #define IPA0_DIAG 0x8300
67 #define IPA0_SIGP 0xae00
68 #define IPA0_B2 0xb200
69 #define IPA0_B9 0xb900
70 #define IPA0_EB 0xeb00
71 #define IPA0_E3 0xe300
73 #define PRIV_B2_SCLP_CALL 0x20
74 #define PRIV_B2_CSCH 0x30
75 #define PRIV_B2_HSCH 0x31
76 #define PRIV_B2_MSCH 0x32
77 #define PRIV_B2_SSCH 0x33
78 #define PRIV_B2_STSCH 0x34
79 #define PRIV_B2_TSCH 0x35
80 #define PRIV_B2_TPI 0x36
81 #define PRIV_B2_SAL 0x37
82 #define PRIV_B2_RSCH 0x38
83 #define PRIV_B2_STCRW 0x39
84 #define PRIV_B2_STCPS 0x3a
85 #define PRIV_B2_RCHP 0x3b
86 #define PRIV_B2_SCHM 0x3c
87 #define PRIV_B2_CHSC 0x5f
88 #define PRIV_B2_SIGA 0x74
89 #define PRIV_B2_XSCH 0x76
91 #define PRIV_EB_SQBS 0x8a
92 #define PRIV_EB_PCISTB 0xd0
93 #define PRIV_EB_SIC 0xd1
95 #define PRIV_B9_EQBS 0x9c
96 #define PRIV_B9_CLP 0xa0
97 #define PRIV_B9_PCISTG 0xd0
98 #define PRIV_B9_PCILG 0xd2
99 #define PRIV_B9_RPCIT 0xd3
101 #define PRIV_E3_MPCIFC 0xd0
102 #define PRIV_E3_STPCIFC 0xd4
104 #define DIAG_TIMEREVENT 0x288
105 #define DIAG_IPL 0x308
106 #define DIAG_KVM_HYPERCALL 0x500
107 #define DIAG_KVM_BREAKPOINT 0x501
109 #define ICPT_INSTRUCTION 0x04
110 #define ICPT_PROGRAM 0x08
111 #define ICPT_EXT_INT 0x14
112 #define ICPT_WAITPSW 0x1c
113 #define ICPT_SOFT_INTERCEPT 0x24
114 #define ICPT_CPU_STOP 0x28
115 #define ICPT_OPEREXC 0x2c
118 #define NR_LOCAL_IRQS 32
120 * Needs to be big enough to contain max_cpus emergency signals
121 * and in addition NR_LOCAL_IRQS interrupts
123 #define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
124 (max_cpus + NR_LOCAL_IRQS))
126 static CPUWatchpoint hw_watchpoint
;
128 * We don't use a list because this structure is also used to transmit the
129 * hardware breakpoints to the kernel.
131 static struct kvm_hw_breakpoint
*hw_breakpoints
;
132 static int nb_hw_breakpoints
;
134 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
138 static QemuMutex qemu_sigp_mutex
;
140 static int cap_sync_regs
;
141 static int cap_async_pf
;
142 static int cap_mem_op
;
143 static int cap_s390_irq
;
147 static int active_cmma
;
149 static void *legacy_s390_alloc(size_t size
, uint64_t *align
);
151 static int kvm_s390_query_mem_limit(uint64_t *memory_limit
)
153 struct kvm_device_attr attr
= {
154 .group
= KVM_S390_VM_MEM_CTRL
,
155 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
156 .addr
= (uint64_t) memory_limit
,
159 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
162 int kvm_s390_set_mem_limit(uint64_t new_limit
, uint64_t *hw_limit
)
166 struct kvm_device_attr attr
= {
167 .group
= KVM_S390_VM_MEM_CTRL
,
168 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
169 .addr
= (uint64_t) &new_limit
,
172 if (!kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
176 rc
= kvm_s390_query_mem_limit(hw_limit
);
179 } else if (*hw_limit
< new_limit
) {
183 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
186 int kvm_s390_cmma_active(void)
191 static bool kvm_s390_cmma_available(void)
193 static bool initialized
, value
;
197 value
= kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_ENABLE_CMMA
) &&
198 kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_CLR_CMMA
);
203 void kvm_s390_cmma_reset(void)
206 struct kvm_device_attr attr
= {
207 .group
= KVM_S390_VM_MEM_CTRL
,
208 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
211 if (!kvm_s390_cmma_active()) {
215 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
216 trace_kvm_clear_cmma(rc
);
219 static void kvm_s390_enable_cmma(void)
222 struct kvm_device_attr attr
= {
223 .group
= KVM_S390_VM_MEM_CTRL
,
224 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
228 warn_report("CMM will not be enabled because it is not "
229 "compatible with hugetlbfs.");
232 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
234 trace_kvm_enable_cmma(rc
);
237 static void kvm_s390_set_attr(uint64_t attr
)
239 struct kvm_device_attr attribute
= {
240 .group
= KVM_S390_VM_CRYPTO
,
244 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
247 error_report("Failed to set crypto device attribute %lu: %s",
248 attr
, strerror(-ret
));
252 static void kvm_s390_init_aes_kw(void)
254 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
256 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
258 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
261 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
262 kvm_s390_set_attr(attr
);
266 static void kvm_s390_init_dea_kw(void)
268 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
270 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
272 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
275 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
276 kvm_s390_set_attr(attr
);
280 void kvm_s390_crypto_reset(void)
282 if (s390_has_feat(S390_FEAT_MSA_EXT_3
)) {
283 kvm_s390_init_aes_kw();
284 kvm_s390_init_dea_kw();
288 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
290 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
291 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
292 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
293 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
295 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
296 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
297 phys_mem_set_alloc(legacy_s390_alloc
);
300 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
301 kvm_vm_enable_cap(s
, KVM_CAP_S390_VECTOR_REGISTERS
, 0);
302 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
304 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_RI
, 0) == 0) {
309 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_GS
, 0) == 0) {
314 /* Try to enable AIS facility */
315 kvm_vm_enable_cap(s
, KVM_CAP_S390_AIS
, 0);
317 qemu_mutex_init(&qemu_sigp_mutex
);
322 int kvm_arch_irqchip_create(MachineState
*ms
, KVMState
*s
)
327 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
329 return cpu
->cpu_index
;
332 int kvm_arch_init_vcpu(CPUState
*cs
)
334 S390CPU
*cpu
= S390_CPU(cs
);
335 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
336 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE
);
340 void kvm_s390_reset_vcpu(S390CPU
*cpu
)
342 CPUState
*cs
= CPU(cpu
);
344 /* The initial reset call is needed here to reset in-kernel
345 * vcpu data that we can't access directly from QEMU
346 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
347 * Before this ioctl cpu_synchronize_state() is called in common kvm
349 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
)) {
350 error_report("Initial CPU reset failed on CPU %i", cs
->cpu_index
);
354 static int can_sync_regs(CPUState
*cs
, int regs
)
356 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
359 int kvm_arch_put_registers(CPUState
*cs
, int level
)
361 S390CPU
*cpu
= S390_CPU(cs
);
362 CPUS390XState
*env
= &cpu
->env
;
363 struct kvm_sregs sregs
;
364 struct kvm_regs regs
;
365 struct kvm_fpu fpu
= {};
369 /* always save the PSW and the GPRS*/
370 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
371 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
373 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
374 for (i
= 0; i
< 16; i
++) {
375 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
376 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
379 for (i
= 0; i
< 16; i
++) {
380 regs
.gprs
[i
] = env
->regs
[i
];
382 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
388 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
389 for (i
= 0; i
< 32; i
++) {
390 cs
->kvm_run
->s
.regs
.vrs
[i
][0] = env
->vregs
[i
][0].ll
;
391 cs
->kvm_run
->s
.regs
.vrs
[i
][1] = env
->vregs
[i
][1].ll
;
393 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
394 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_VRS
;
395 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
396 for (i
= 0; i
< 16; i
++) {
397 cs
->kvm_run
->s
.regs
.fprs
[i
] = get_freg(env
, i
)->ll
;
399 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
400 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_FPRS
;
403 for (i
= 0; i
< 16; i
++) {
404 fpu
.fprs
[i
] = get_freg(env
, i
)->ll
;
408 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
414 /* Do we need to save more than that? */
415 if (level
== KVM_PUT_RUNTIME_STATE
) {
419 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
420 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
421 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
422 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
423 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
424 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
425 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
428 * These ONE_REGS are not protected by a capability. As they are only
429 * necessary for migration we just trace a possible error, but don't
430 * return with an error return code.
432 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
433 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
434 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
435 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
436 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
439 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
440 memcpy(cs
->kvm_run
->s
.regs
.riccb
, env
->riccb
, 64);
441 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_RICCB
;
444 /* pfault parameters */
445 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
446 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
447 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
448 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
449 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
450 } else if (cap_async_pf
) {
451 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
455 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
459 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
465 /* access registers and control registers*/
466 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
467 for (i
= 0; i
< 16; i
++) {
468 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
469 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
471 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
472 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
474 for (i
= 0; i
< 16; i
++) {
475 sregs
.acrs
[i
] = env
->aregs
[i
];
476 sregs
.crs
[i
] = env
->cregs
[i
];
478 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
484 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
485 memcpy(cs
->kvm_run
->s
.regs
.gscb
, env
->gscb
, 32);
486 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GSCB
;
489 /* Finally the prefix */
490 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
491 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
492 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
494 /* prefix is only supported via sync regs */
499 int kvm_arch_get_registers(CPUState
*cs
)
501 S390CPU
*cpu
= S390_CPU(cs
);
502 CPUS390XState
*env
= &cpu
->env
;
503 struct kvm_sregs sregs
;
504 struct kvm_regs regs
;
509 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
510 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
513 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
514 for (i
= 0; i
< 16; i
++) {
515 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
518 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
522 for (i
= 0; i
< 16; i
++) {
523 env
->regs
[i
] = regs
.gprs
[i
];
527 /* The ACRS and CRS */
528 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
529 for (i
= 0; i
< 16; i
++) {
530 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
531 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
534 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
538 for (i
= 0; i
< 16; i
++) {
539 env
->aregs
[i
] = sregs
.acrs
[i
];
540 env
->cregs
[i
] = sregs
.crs
[i
];
544 /* Floating point and vector registers */
545 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
546 for (i
= 0; i
< 32; i
++) {
547 env
->vregs
[i
][0].ll
= cs
->kvm_run
->s
.regs
.vrs
[i
][0];
548 env
->vregs
[i
][1].ll
= cs
->kvm_run
->s
.regs
.vrs
[i
][1];
550 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
551 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
552 for (i
= 0; i
< 16; i
++) {
553 get_freg(env
, i
)->ll
= cs
->kvm_run
->s
.regs
.fprs
[i
];
555 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
557 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
561 for (i
= 0; i
< 16; i
++) {
562 get_freg(env
, i
)->ll
= fpu
.fprs
[i
];
568 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
569 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
572 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
573 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
574 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
575 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
576 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
577 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
580 * These ONE_REGS are not protected by a capability. As they are only
581 * necessary for migration we just trace a possible error, but don't
582 * return with an error return code.
584 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
585 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
586 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
587 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
588 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
591 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
592 memcpy(env
->riccb
, cs
->kvm_run
->s
.regs
.riccb
, 64);
595 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
596 memcpy(env
->gscb
, cs
->kvm_run
->s
.regs
.gscb
, 32);
599 /* pfault parameters */
600 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
601 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
602 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
603 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
604 } else if (cap_async_pf
) {
605 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
609 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
613 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
622 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
625 struct kvm_device_attr attr
= {
626 .group
= KVM_S390_VM_TOD
,
627 .attr
= KVM_S390_VM_TOD_LOW
,
628 .addr
= (uint64_t)tod_low
,
631 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
636 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
637 attr
.addr
= (uint64_t)tod_high
;
638 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
641 int kvm_s390_set_clock(uint8_t *tod_high
, uint64_t *tod_low
)
645 struct kvm_device_attr attr
= {
646 .group
= KVM_S390_VM_TOD
,
647 .attr
= KVM_S390_VM_TOD_LOW
,
648 .addr
= (uint64_t)tod_low
,
651 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
656 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
657 attr
.addr
= (uint64_t)tod_high
;
658 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
663 * @addr: the logical start address in guest memory
664 * @ar: the access register number
665 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
666 * @len: length that should be transferred
667 * @is_write: true = write, false = read
668 * Returns: 0 on success, non-zero if an exception or error occurred
670 * Use KVM ioctl to read/write from/to guest memory. An access exception
671 * is injected into the vCPU in case of translation errors.
673 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
674 int len
, bool is_write
)
676 struct kvm_s390_mem_op mem_op
= {
678 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
680 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
681 : KVM_S390_MEMOP_LOGICAL_READ
,
682 .buf
= (uint64_t)hostbuf
,
691 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
694 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
696 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret
));
702 * Legacy layout for s390:
703 * Older S390 KVM requires the topmost vma of the RAM to be
704 * smaller than an system defined value, which is at least 256GB.
705 * Larger systems have larger values. We put the guest between
706 * the end of data segment (system break) and this value. We
707 * use 32GB as a base to have enough room for the system break
708 * to grow. We also have to use MAP parameters that avoid
709 * read-only mapping of guest pages.
711 static void *legacy_s390_alloc(size_t size
, uint64_t *align
)
715 mem
= mmap((void *) 0x800000000ULL
, size
,
716 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
717 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
718 return mem
== MAP_FAILED
? NULL
: mem
;
721 static uint8_t const *sw_bp_inst
;
722 static uint8_t sw_bp_ilen
;
724 static void determine_sw_breakpoint_instr(void)
726 /* DIAG 501 is used for sw breakpoints with old kernels */
727 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
728 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
729 static const uint8_t instr_0x0000
[] = {0x00, 0x00};
734 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_USER_INSTR0
, 0)) {
735 sw_bp_inst
= diag_501
;
736 sw_bp_ilen
= sizeof(diag_501
);
737 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
739 sw_bp_inst
= instr_0x0000
;
740 sw_bp_ilen
= sizeof(instr_0x0000
);
741 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
745 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
747 determine_sw_breakpoint_instr();
749 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
751 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)sw_bp_inst
, sw_bp_ilen
, 1)) {
757 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
761 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sw_bp_ilen
, 0)) {
763 } else if (memcmp(t
, sw_bp_inst
, sw_bp_ilen
)) {
765 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
773 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
778 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
779 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
780 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
781 return &hw_breakpoints
[n
];
788 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
792 if (find_hw_breakpoint(addr
, len
, type
)) {
796 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
798 if (!hw_breakpoints
) {
799 nb_hw_breakpoints
= 0;
800 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
803 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
806 if (!hw_breakpoints
) {
807 nb_hw_breakpoints
= 0;
811 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
812 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
813 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
820 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
821 target_ulong len
, int type
)
824 case GDB_BREAKPOINT_HW
:
827 case GDB_WATCHPOINT_WRITE
:
831 type
= KVM_HW_WP_WRITE
;
836 return insert_hw_breakpoint(addr
, len
, type
);
839 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
840 target_ulong len
, int type
)
843 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
850 if (nb_hw_breakpoints
> 0) {
852 * In order to trim the array, move the last element to the position to
853 * be removed - if necessary.
855 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
856 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
858 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
860 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
862 g_free(hw_breakpoints
);
863 hw_breakpoints
= NULL
;
869 void kvm_arch_remove_all_hw_breakpoints(void)
871 nb_hw_breakpoints
= 0;
872 g_free(hw_breakpoints
);
873 hw_breakpoints
= NULL
;
876 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
880 if (nb_hw_breakpoints
> 0) {
881 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
882 dbg
->arch
.hw_bp
= hw_breakpoints
;
884 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
885 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
886 hw_breakpoints
[i
].addr
);
888 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
890 dbg
->arch
.nr_hw_bp
= 0;
891 dbg
->arch
.hw_bp
= NULL
;
895 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
899 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
901 return MEMTXATTRS_UNSPECIFIED
;
904 int kvm_arch_process_async_events(CPUState
*cs
)
909 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
910 struct kvm_s390_interrupt
*interrupt
)
914 interrupt
->type
= irq
->type
;
916 case KVM_S390_INT_VIRTIO
:
917 interrupt
->parm
= irq
->u
.ext
.ext_params
;
919 case KVM_S390_INT_PFAULT_INIT
:
920 case KVM_S390_INT_PFAULT_DONE
:
921 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
923 case KVM_S390_PROGRAM_INT
:
924 interrupt
->parm
= irq
->u
.pgm
.code
;
926 case KVM_S390_SIGP_SET_PREFIX
:
927 interrupt
->parm
= irq
->u
.prefix
.address
;
929 case KVM_S390_INT_SERVICE
:
930 interrupt
->parm
= irq
->u
.ext
.ext_params
;
933 interrupt
->parm
= irq
->u
.mchk
.cr14
;
934 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
936 case KVM_S390_INT_EXTERNAL_CALL
:
937 interrupt
->parm
= irq
->u
.extcall
.code
;
939 case KVM_S390_INT_EMERGENCY
:
940 interrupt
->parm
= irq
->u
.emerg
.code
;
942 case KVM_S390_SIGP_STOP
:
943 case KVM_S390_RESTART
:
944 break; /* These types have no parameters */
945 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
946 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
947 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
948 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
949 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
958 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
960 struct kvm_s390_interrupt kvmint
= {};
963 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
965 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
969 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
971 fprintf(stderr
, "KVM failed to inject interrupt\n");
976 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
978 CPUState
*cs
= CPU(cpu
);
982 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
986 error_report("KVM failed to inject interrupt %llx", irq
->type
);
990 inject_vcpu_irq_legacy(cs
, irq
);
993 static void __kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
995 struct kvm_s390_interrupt kvmint
= {};
998 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1000 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1004 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
1006 fprintf(stderr
, "KVM failed to inject interrupt\n");
1011 void kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
1013 static bool use_flic
= true;
1017 r
= kvm_s390_inject_flic(irq
);
1025 __kvm_s390_floating_interrupt(irq
);
1028 void kvm_s390_service_interrupt(uint32_t parm
)
1030 struct kvm_s390_irq irq
= {
1031 .type
= KVM_S390_INT_SERVICE
,
1032 .u
.ext
.ext_params
= parm
,
1035 kvm_s390_floating_interrupt(&irq
);
1038 void kvm_s390_program_interrupt(S390CPU
*cpu
, uint16_t code
)
1040 struct kvm_s390_irq irq
= {
1041 .type
= KVM_S390_PROGRAM_INT
,
1045 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1048 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
1050 struct kvm_s390_irq irq
= {
1051 .type
= KVM_S390_PROGRAM_INT
,
1053 .u
.pgm
.trans_exc_code
= te_code
,
1054 .u
.pgm
.exc_access_id
= te_code
& 3,
1057 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1060 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
1063 CPUS390XState
*env
= &cpu
->env
;
1068 cpu_synchronize_state(CPU(cpu
));
1069 sccb
= env
->regs
[ipbh0
& 0xf];
1070 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
1072 r
= sclp_service_call(env
, sccb
, code
);
1074 kvm_s390_program_interrupt(cpu
, -r
);
1082 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1084 CPUS390XState
*env
= &cpu
->env
;
1086 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
1088 cpu_synchronize_state(CPU(cpu
));
1092 ioinst_handle_xsch(cpu
, env
->regs
[1]);
1095 ioinst_handle_csch(cpu
, env
->regs
[1]);
1098 ioinst_handle_hsch(cpu
, env
->regs
[1]);
1101 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1104 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1107 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
);
1110 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1113 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1114 fprintf(stderr
, "Spurious tsch intercept\n");
1117 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
);
1120 /* This should have been handled by kvm already. */
1121 fprintf(stderr
, "Spurious tpi intercept\n");
1124 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1125 run
->s390_sieic
.ipb
);
1128 ioinst_handle_rsch(cpu
, env
->regs
[1]);
1131 ioinst_handle_rchp(cpu
, env
->regs
[1]);
1134 /* We do not provide this instruction, it is suppressed. */
1137 ioinst_handle_sal(cpu
, env
->regs
[1]);
1140 /* Not provided, set CC = 3 for subchannel not operational */
1143 case PRIV_B2_SCLP_CALL
:
1144 rc
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
1148 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1155 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1158 CPUS390XState
*env
= &cpu
->env
;
1159 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1160 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1161 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1162 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1164 if (disp2
& 0x80000) {
1165 disp2
+= 0xfff00000;
1171 return (base2
? env
->regs
[base2
] : 0) +
1172 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1175 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1178 CPUS390XState
*env
= &cpu
->env
;
1179 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1180 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1181 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1183 if (disp2
& 0x80000) {
1184 disp2
+= 0xfff00000;
1190 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1193 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1195 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1197 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1198 return clp_service_call(cpu
, r2
);
1204 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1206 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1207 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1209 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1210 return pcilg_service_call(cpu
, r1
, r2
);
1216 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1218 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1219 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1221 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1222 return pcistg_service_call(cpu
, r1
, r2
);
1228 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1230 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1234 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1235 cpu_synchronize_state(CPU(cpu
));
1236 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1238 return stpcifc_service_call(cpu
, r1
, fiba
, ar
);
1244 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1246 CPUS390XState
*env
= &cpu
->env
;
1247 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1248 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1253 cpu_synchronize_state(CPU(cpu
));
1254 mode
= env
->regs
[r1
] & 0xffff;
1255 isc
= (env
->regs
[r3
] >> 27) & 0x7;
1256 r
= css_do_sic(env
, isc
, mode
);
1258 kvm_s390_program_interrupt(cpu
, -r
);
1264 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1266 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1267 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1269 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1270 return rpcit_service_call(cpu
, r1
, r2
);
1276 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1278 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1279 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1283 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1284 cpu_synchronize_state(CPU(cpu
));
1285 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1287 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
);
1293 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1295 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1299 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1300 cpu_synchronize_state(CPU(cpu
));
1301 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1303 return mpcifc_service_call(cpu
, r1
, fiba
, ar
);
1309 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1315 r
= kvm_clp_service_call(cpu
, run
);
1317 case PRIV_B9_PCISTG
:
1318 r
= kvm_pcistg_service_call(cpu
, run
);
1321 r
= kvm_pcilg_service_call(cpu
, run
);
1324 r
= kvm_rpcit_service_call(cpu
, run
);
1327 /* just inject exception */
1332 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1339 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1344 case PRIV_EB_PCISTB
:
1345 r
= kvm_pcistb_service_call(cpu
, run
);
1348 r
= kvm_sic_service_call(cpu
, run
);
1351 /* just inject exception */
1356 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1363 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1368 case PRIV_E3_MPCIFC
:
1369 r
= kvm_mpcifc_service_call(cpu
, run
);
1371 case PRIV_E3_STPCIFC
:
1372 r
= kvm_stpcifc_service_call(cpu
, run
);
1376 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1383 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1385 CPUS390XState
*env
= &cpu
->env
;
1388 cpu_synchronize_state(CPU(cpu
));
1389 ret
= s390_virtio_hypercall(env
);
1390 if (ret
== -EINVAL
) {
1391 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1398 static void kvm_handle_diag_288(S390CPU
*cpu
, struct kvm_run
*run
)
1403 cpu_synchronize_state(CPU(cpu
));
1404 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1405 r3
= run
->s390_sieic
.ipa
& 0x000f;
1406 rc
= handle_diag_288(&cpu
->env
, r1
, r3
);
1408 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1412 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1416 cpu_synchronize_state(CPU(cpu
));
1417 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1418 r3
= run
->s390_sieic
.ipa
& 0x000f;
1419 handle_diag_308(&cpu
->env
, r1
, r3
);
1422 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1424 CPUS390XState
*env
= &cpu
->env
;
1427 cpu_synchronize_state(CPU(cpu
));
1429 pc
= env
->psw
.addr
- sw_bp_ilen
;
1430 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1438 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1440 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1446 * For any diagnose call we support, bits 48-63 of the resulting
1447 * address specify the function code; the remainder is ignored.
1449 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1450 switch (func_code
) {
1451 case DIAG_TIMEREVENT
:
1452 kvm_handle_diag_288(cpu
, run
);
1455 kvm_handle_diag_308(cpu
, run
);
1457 case DIAG_KVM_HYPERCALL
:
1458 r
= handle_hypercall(cpu
, run
);
1460 case DIAG_KVM_BREAKPOINT
:
1461 r
= handle_sw_breakpoint(cpu
, run
);
1464 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1465 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1472 typedef struct SigpInfo
{
1475 uint64_t *status_reg
;
1478 static void set_sigp_status(SigpInfo
*si
, uint64_t status
)
1480 *si
->status_reg
&= 0xffffffff00000000ULL
;
1481 *si
->status_reg
|= status
;
1482 si
->cc
= SIGP_CC_STATUS_STORED
;
1485 static void sigp_start(CPUState
*cs
, run_on_cpu_data arg
)
1487 S390CPU
*cpu
= S390_CPU(cs
);
1488 SigpInfo
*si
= arg
.host_ptr
;
1490 if (s390_cpu_get_state(cpu
) != CPU_STATE_STOPPED
) {
1491 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1495 s390_cpu_set_state(CPU_STATE_OPERATING
, cpu
);
1496 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1499 static void sigp_stop(CPUState
*cs
, run_on_cpu_data arg
)
1501 S390CPU
*cpu
= S390_CPU(cs
);
1502 SigpInfo
*si
= arg
.host_ptr
;
1503 struct kvm_s390_irq irq
= {
1504 .type
= KVM_S390_SIGP_STOP
,
1507 if (s390_cpu_get_state(cpu
) != CPU_STATE_OPERATING
) {
1508 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1512 /* disabled wait - sleeping in user space */
1514 s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
);
1516 /* execute the stop function */
1517 cpu
->env
.sigp_order
= SIGP_STOP
;
1518 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1520 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1523 #define ADTL_GS_OFFSET 1024 /* offset of GS data in adtl save area */
1524 #define ADTL_GS_MIN_SIZE 2048 /* minimal size of adtl save area for GS */
1525 static int do_store_adtl_status(S390CPU
*cpu
, hwaddr addr
, hwaddr len
)
1530 mem
= cpu_physical_memory_map(addr
, &save
, 1);
1535 cpu_physical_memory_unmap(mem
, len
, 1, 0);
1539 if (s390_has_feat(S390_FEAT_VECTOR
)) {
1540 memcpy(mem
, &cpu
->env
.vregs
, 512);
1542 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE
) && len
>= ADTL_GS_MIN_SIZE
) {
1543 memcpy(mem
+ ADTL_GS_OFFSET
, &cpu
->env
.gscb
, 32);
1546 cpu_physical_memory_unmap(mem
, len
, 1, len
);
1551 #define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1552 #define SAVE_AREA_SIZE 512
1553 static int kvm_s390_store_status(S390CPU
*cpu
, hwaddr addr
, bool store_arch
)
1555 static const uint8_t ar_id
= 1;
1556 uint64_t ckc
= cpu
->env
.ckc
>> 8;
1559 hwaddr len
= SAVE_AREA_SIZE
;
1561 mem
= cpu_physical_memory_map(addr
, &len
, 1);
1565 if (len
!= SAVE_AREA_SIZE
) {
1566 cpu_physical_memory_unmap(mem
, len
, 1, 0);
1571 cpu_physical_memory_write(offsetof(LowCore
, ar_access_id
), &ar_id
, 1);
1573 for (i
= 0; i
< 16; ++i
) {
1574 *((uint64_t *)mem
+ i
) = get_freg(&cpu
->env
, i
)->ll
;
1576 memcpy(mem
+ 128, &cpu
->env
.regs
, 128);
1577 memcpy(mem
+ 256, &cpu
->env
.psw
, 16);
1578 memcpy(mem
+ 280, &cpu
->env
.psa
, 4);
1579 memcpy(mem
+ 284, &cpu
->env
.fpc
, 4);
1580 memcpy(mem
+ 292, &cpu
->env
.todpr
, 4);
1581 memcpy(mem
+ 296, &cpu
->env
.cputm
, 8);
1582 memcpy(mem
+ 304, &ckc
, 8);
1583 memcpy(mem
+ 320, &cpu
->env
.aregs
, 64);
1584 memcpy(mem
+ 384, &cpu
->env
.cregs
, 128);
1586 cpu_physical_memory_unmap(mem
, len
, 1, len
);
1591 static void sigp_stop_and_store_status(CPUState
*cs
, run_on_cpu_data arg
)
1593 S390CPU
*cpu
= S390_CPU(cs
);
1594 SigpInfo
*si
= arg
.host_ptr
;
1595 struct kvm_s390_irq irq
= {
1596 .type
= KVM_S390_SIGP_STOP
,
1599 /* disabled wait - sleeping in user space */
1600 if (s390_cpu_get_state(cpu
) == CPU_STATE_OPERATING
&& cs
->halted
) {
1601 s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
);
1604 switch (s390_cpu_get_state(cpu
)) {
1605 case CPU_STATE_OPERATING
:
1606 cpu
->env
.sigp_order
= SIGP_STOP_STORE_STATUS
;
1607 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1608 /* store will be performed when handling the stop intercept */
1610 case CPU_STATE_STOPPED
:
1611 /* already stopped, just store the status */
1612 cpu_synchronize_state(cs
);
1613 kvm_s390_store_status(cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
, true);
1616 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1619 static void sigp_store_status_at_address(CPUState
*cs
, run_on_cpu_data arg
)
1621 S390CPU
*cpu
= S390_CPU(cs
);
1622 SigpInfo
*si
= arg
.host_ptr
;
1623 uint32_t address
= si
->param
& 0x7ffffe00u
;
1625 /* cpu has to be stopped */
1626 if (s390_cpu_get_state(cpu
) != CPU_STATE_STOPPED
) {
1627 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1631 cpu_synchronize_state(cs
);
1633 if (kvm_s390_store_status(cpu
, address
, false)) {
1634 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1637 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1640 #define ADTL_SAVE_LC_MASK 0xfUL
1641 static void sigp_store_adtl_status(CPUState
*cs
, run_on_cpu_data arg
)
1643 S390CPU
*cpu
= S390_CPU(cs
);
1644 SigpInfo
*si
= arg
.host_ptr
;
1645 uint8_t lc
= si
->param
& ADTL_SAVE_LC_MASK
;
1646 hwaddr addr
= si
->param
& ~ADTL_SAVE_LC_MASK
;
1647 hwaddr len
= 1UL << (lc
? lc
: 10);
1649 if (!s390_has_feat(S390_FEAT_VECTOR
) &&
1650 !s390_has_feat(S390_FEAT_GUARDED_STORAGE
)) {
1651 set_sigp_status(si
, SIGP_STAT_INVALID_ORDER
);
1655 /* cpu has to be stopped */
1656 if (s390_cpu_get_state(cpu
) != CPU_STATE_STOPPED
) {
1657 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1661 /* address must be aligned to length */
1662 if (addr
& (len
- 1)) {
1663 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1667 /* no GS: only lc == 0 is valid */
1668 if (!s390_has_feat(S390_FEAT_GUARDED_STORAGE
) &&
1670 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1674 /* GS: 0, 10, 11, 12 are valid */
1675 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE
) &&
1680 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1684 cpu_synchronize_state(cs
);
1686 if (do_store_adtl_status(cpu
, addr
, len
)) {
1687 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1690 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1693 static void sigp_restart(CPUState
*cs
, run_on_cpu_data arg
)
1695 S390CPU
*cpu
= S390_CPU(cs
);
1696 SigpInfo
*si
= arg
.host_ptr
;
1697 struct kvm_s390_irq irq
= {
1698 .type
= KVM_S390_RESTART
,
1701 switch (s390_cpu_get_state(cpu
)) {
1702 case CPU_STATE_STOPPED
:
1703 /* the restart irq has to be delivered prior to any other pending irq */
1704 cpu_synchronize_state(cs
);
1705 do_restart_interrupt(&cpu
->env
);
1706 s390_cpu_set_state(CPU_STATE_OPERATING
, cpu
);
1708 case CPU_STATE_OPERATING
:
1709 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1712 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1715 int kvm_s390_cpu_restart(S390CPU
*cpu
)
1719 run_on_cpu(CPU(cpu
), sigp_restart
, RUN_ON_CPU_HOST_PTR(&si
));
1720 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu
->env
);
1724 static void sigp_initial_cpu_reset(CPUState
*cs
, run_on_cpu_data arg
)
1726 S390CPU
*cpu
= S390_CPU(cs
);
1727 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
1728 SigpInfo
*si
= arg
.host_ptr
;
1730 cpu_synchronize_state(cs
);
1731 scc
->initial_cpu_reset(cs
);
1732 cpu_synchronize_post_reset(cs
);
1733 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1736 static void sigp_cpu_reset(CPUState
*cs
, run_on_cpu_data arg
)
1738 S390CPU
*cpu
= S390_CPU(cs
);
1739 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
1740 SigpInfo
*si
= arg
.host_ptr
;
1742 cpu_synchronize_state(cs
);
1744 cpu_synchronize_post_reset(cs
);
1745 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1748 static void sigp_set_prefix(CPUState
*cs
, run_on_cpu_data arg
)
1750 S390CPU
*cpu
= S390_CPU(cs
);
1751 SigpInfo
*si
= arg
.host_ptr
;
1752 uint32_t addr
= si
->param
& 0x7fffe000u
;
1754 cpu_synchronize_state(cs
);
1756 if (!address_space_access_valid(&address_space_memory
, addr
,
1757 sizeof(struct LowCore
), false)) {
1758 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1762 /* cpu has to be stopped */
1763 if (s390_cpu_get_state(cpu
) != CPU_STATE_STOPPED
) {
1764 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1768 cpu
->env
.psa
= addr
;
1769 cpu_synchronize_post_init(cs
);
1770 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1773 static int handle_sigp_single_dst(S390CPU
*dst_cpu
, uint8_t order
,
1774 uint64_t param
, uint64_t *status_reg
)
1778 .status_reg
= status_reg
,
1781 /* cpu available? */
1782 if (dst_cpu
== NULL
) {
1783 return SIGP_CC_NOT_OPERATIONAL
;
1786 /* only resets can break pending orders */
1787 if (dst_cpu
->env
.sigp_order
!= 0 &&
1788 order
!= SIGP_CPU_RESET
&&
1789 order
!= SIGP_INITIAL_CPU_RESET
) {
1790 return SIGP_CC_BUSY
;
1795 run_on_cpu(CPU(dst_cpu
), sigp_start
, RUN_ON_CPU_HOST_PTR(&si
));
1798 run_on_cpu(CPU(dst_cpu
), sigp_stop
, RUN_ON_CPU_HOST_PTR(&si
));
1801 run_on_cpu(CPU(dst_cpu
), sigp_restart
, RUN_ON_CPU_HOST_PTR(&si
));
1803 case SIGP_STOP_STORE_STATUS
:
1804 run_on_cpu(CPU(dst_cpu
), sigp_stop_and_store_status
, RUN_ON_CPU_HOST_PTR(&si
));
1806 case SIGP_STORE_STATUS_ADDR
:
1807 run_on_cpu(CPU(dst_cpu
), sigp_store_status_at_address
, RUN_ON_CPU_HOST_PTR(&si
));
1809 case SIGP_STORE_ADTL_STATUS
:
1810 run_on_cpu(CPU(dst_cpu
), sigp_store_adtl_status
, RUN_ON_CPU_HOST_PTR(&si
));
1812 case SIGP_SET_PREFIX
:
1813 run_on_cpu(CPU(dst_cpu
), sigp_set_prefix
, RUN_ON_CPU_HOST_PTR(&si
));
1815 case SIGP_INITIAL_CPU_RESET
:
1816 run_on_cpu(CPU(dst_cpu
), sigp_initial_cpu_reset
, RUN_ON_CPU_HOST_PTR(&si
));
1818 case SIGP_CPU_RESET
:
1819 run_on_cpu(CPU(dst_cpu
), sigp_cpu_reset
, RUN_ON_CPU_HOST_PTR(&si
));
1822 DPRINTF("KVM: unknown SIGP: 0x%x\n", order
);
1823 set_sigp_status(&si
, SIGP_STAT_INVALID_ORDER
);
1829 static int sigp_set_architecture(S390CPU
*cpu
, uint32_t param
,
1830 uint64_t *status_reg
)
1834 bool all_stopped
= true;
1836 CPU_FOREACH(cur_cs
) {
1837 cur_cpu
= S390_CPU(cur_cs
);
1839 if (cur_cpu
== cpu
) {
1842 if (s390_cpu_get_state(cur_cpu
) != CPU_STATE_STOPPED
) {
1843 all_stopped
= false;
1847 *status_reg
&= 0xffffffff00000000ULL
;
1849 /* Reject set arch order, with czam we're always in z/Arch mode. */
1850 *status_reg
|= (all_stopped
? SIGP_STAT_INVALID_PARAMETER
:
1851 SIGP_STAT_INCORRECT_STATE
);
1852 return SIGP_CC_STATUS_STORED
;
1855 static int handle_sigp(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1857 CPUS390XState
*env
= &cpu
->env
;
1858 const uint8_t r1
= ipa1
>> 4;
1859 const uint8_t r3
= ipa1
& 0x0f;
1862 uint64_t *status_reg
;
1864 S390CPU
*dst_cpu
= NULL
;
1866 cpu_synchronize_state(CPU(cpu
));
1868 /* get order code */
1869 order
= decode_basedisp_rs(env
, run
->s390_sieic
.ipb
, NULL
)
1871 status_reg
= &env
->regs
[r1
];
1872 param
= (r1
% 2) ? env
->regs
[r1
] : env
->regs
[r1
+ 1];
1874 if (qemu_mutex_trylock(&qemu_sigp_mutex
)) {
1881 ret
= sigp_set_architecture(cpu
, param
, status_reg
);
1884 /* all other sigp orders target a single vcpu */
1885 dst_cpu
= s390_cpu_addr2state(env
->regs
[r3
]);
1886 ret
= handle_sigp_single_dst(dst_cpu
, order
, param
, status_reg
);
1888 qemu_mutex_unlock(&qemu_sigp_mutex
);
1891 trace_kvm_sigp_finished(order
, CPU(cpu
)->cpu_index
,
1892 dst_cpu
? CPU(dst_cpu
)->cpu_index
: -1, ret
);
1902 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1904 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1905 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1908 DPRINTF("handle_instruction 0x%x 0x%x\n",
1909 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1912 r
= handle_b2(cpu
, run
, ipa1
);
1915 r
= handle_b9(cpu
, run
, ipa1
);
1918 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1921 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1924 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1927 r
= handle_sigp(cpu
, run
, ipa1
);
1933 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1939 static bool is_special_wait_psw(CPUState
*cs
)
1941 /* signal quiesce */
1942 return cs
->kvm_run
->psw_addr
== 0xfffUL
;
1945 static void unmanageable_intercept(S390CPU
*cpu
, const char *str
, int pswoffset
)
1947 CPUState
*cs
= CPU(cpu
);
1949 error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1950 str
, cs
->cpu_index
, ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
),
1951 ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
+ 8));
1953 qemu_system_guest_panicked(NULL
);
1956 /* try to detect pgm check loops */
1957 static int handle_oper_loop(S390CPU
*cpu
, struct kvm_run
*run
)
1959 CPUState
*cs
= CPU(cpu
);
1962 cpu_synchronize_state(cs
);
1963 newpsw
.mask
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1964 offsetof(LowCore
, program_new_psw
));
1965 newpsw
.addr
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1966 offsetof(LowCore
, program_new_psw
) + 8);
1967 oldpsw
.mask
= run
->psw_mask
;
1968 oldpsw
.addr
= run
->psw_addr
;
1970 * Avoid endless loops of operation exceptions, if the pgm new
1971 * PSW will cause a new operation exception.
1972 * The heuristic checks if the pgm new psw is within 6 bytes before
1973 * the faulting psw address (with same DAT, AS settings) and the
1974 * new psw is not a wait psw and the fault was not triggered by
1975 * problem state. In that case go into crashed state.
1978 if (oldpsw
.addr
- newpsw
.addr
<= 6 &&
1979 !(newpsw
.mask
& PSW_MASK_WAIT
) &&
1980 !(oldpsw
.mask
& PSW_MASK_PSTATE
) &&
1981 (newpsw
.mask
& PSW_MASK_ASC
) == (oldpsw
.mask
& PSW_MASK_ASC
) &&
1982 (newpsw
.mask
& PSW_MASK_DAT
) == (oldpsw
.mask
& PSW_MASK_DAT
)) {
1983 unmanageable_intercept(cpu
, "operation exception loop",
1984 offsetof(LowCore
, program_new_psw
));
1990 static int handle_intercept(S390CPU
*cpu
)
1992 CPUState
*cs
= CPU(cpu
);
1993 struct kvm_run
*run
= cs
->kvm_run
;
1994 int icpt_code
= run
->s390_sieic
.icptcode
;
1997 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1998 (long)cs
->kvm_run
->psw_addr
);
1999 switch (icpt_code
) {
2000 case ICPT_INSTRUCTION
:
2001 r
= handle_instruction(cpu
, run
);
2004 unmanageable_intercept(cpu
, "program interrupt",
2005 offsetof(LowCore
, program_new_psw
));
2009 unmanageable_intercept(cpu
, "external interrupt",
2010 offsetof(LowCore
, external_new_psw
));
2014 /* disabled wait, since enabled wait is handled in kernel */
2015 cpu_synchronize_state(cs
);
2016 if (s390_cpu_halt(cpu
) == 0) {
2017 if (is_special_wait_psw(cs
)) {
2018 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN
);
2020 qemu_system_guest_panicked(NULL
);
2026 if (s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
) == 0) {
2027 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN
);
2029 if (cpu
->env
.sigp_order
== SIGP_STOP_STORE_STATUS
) {
2030 kvm_s390_store_status(cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
,
2033 cpu
->env
.sigp_order
= 0;
2037 /* check for break points */
2038 r
= handle_sw_breakpoint(cpu
, run
);
2040 /* Then check for potential pgm check loops */
2041 r
= handle_oper_loop(cpu
, run
);
2043 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
2047 case ICPT_SOFT_INTERCEPT
:
2048 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
2052 fprintf(stderr
, "KVM unimplemented icpt IO\n");
2056 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
2064 static int handle_tsch(S390CPU
*cpu
)
2066 CPUState
*cs
= CPU(cpu
);
2067 struct kvm_run
*run
= cs
->kvm_run
;
2070 cpu_synchronize_state(cs
);
2072 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
);
2076 * If an I/O interrupt had been dequeued, we have to reinject it.
2078 if (run
->s390_tsch
.dequeued
) {
2079 kvm_s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
2080 run
->s390_tsch
.subchannel_nr
,
2081 run
->s390_tsch
.io_int_parm
,
2082 run
->s390_tsch
.io_int_word
);
2089 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
2091 struct sysib_322 sysib
;
2094 if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
2097 /* Shift the stack of Extended Names to prepare for our own data */
2098 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
2099 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
2100 /* First virt level, that doesn't provide Ext Names delimits stack. It is
2101 * assumed it's not capable of managing Extended Names for lower levels.
2103 for (del
= 1; del
< sysib
.count
; del
++) {
2104 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
2108 if (del
< sysib
.count
) {
2109 memset(sysib
.ext_names
[del
], 0,
2110 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
2112 /* Insert short machine name in EBCDIC, padded with blanks */
2114 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
2115 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
2116 strlen(qemu_name
)));
2118 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
2119 memset(sysib
.ext_names
[0], 0, sizeof(sysib
.ext_names
[0]));
2120 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
2121 * considered by s390 as not capable of providing any Extended Name.
2122 * Therefore if no name was specified on qemu invocation, we go with the
2123 * same "KVMguest" default, which KVM has filled into short name field.
2126 strncpy((char *)sysib
.ext_names
[0], qemu_name
,
2127 sizeof(sysib
.ext_names
[0]));
2129 strcpy((char *)sysib
.ext_names
[0], "KVMguest");
2132 memcpy(sysib
.vm
[0].uuid
, &qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
2134 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
2137 static int handle_stsi(S390CPU
*cpu
)
2139 CPUState
*cs
= CPU(cpu
);
2140 struct kvm_run
*run
= cs
->kvm_run
;
2142 switch (run
->s390_stsi
.fc
) {
2144 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
2147 /* Only sysib 3.2.2 needs post-handling for now. */
2148 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
2155 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
2157 CPUState
*cs
= CPU(cpu
);
2158 struct kvm_run
*run
= cs
->kvm_run
;
2161 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
2163 switch (arch_info
->type
) {
2164 case KVM_HW_WP_WRITE
:
2165 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
2166 cs
->watchpoint_hit
= &hw_watchpoint
;
2167 hw_watchpoint
.vaddr
= arch_info
->addr
;
2168 hw_watchpoint
.flags
= BP_MEM_WRITE
;
2173 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
2177 case KVM_SINGLESTEP
:
2178 if (cs
->singlestep_enabled
) {
2189 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
2191 S390CPU
*cpu
= S390_CPU(cs
);
2194 qemu_mutex_lock_iothread();
2196 switch (run
->exit_reason
) {
2197 case KVM_EXIT_S390_SIEIC
:
2198 ret
= handle_intercept(cpu
);
2200 case KVM_EXIT_S390_RESET
:
2201 s390_reipl_request();
2203 case KVM_EXIT_S390_TSCH
:
2204 ret
= handle_tsch(cpu
);
2206 case KVM_EXIT_S390_STSI
:
2207 ret
= handle_stsi(cpu
);
2209 case KVM_EXIT_DEBUG
:
2210 ret
= kvm_arch_handle_debug_exit(cpu
);
2213 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
2216 qemu_mutex_unlock_iothread();
2219 ret
= EXCP_INTERRUPT
;
2224 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
2229 void kvm_s390_io_interrupt(uint16_t subchannel_id
,
2230 uint16_t subchannel_nr
, uint32_t io_int_parm
,
2231 uint32_t io_int_word
)
2233 struct kvm_s390_irq irq
= {
2234 .u
.io
.subchannel_id
= subchannel_id
,
2235 .u
.io
.subchannel_nr
= subchannel_nr
,
2236 .u
.io
.io_int_parm
= io_int_parm
,
2237 .u
.io
.io_int_word
= io_int_word
,
2240 if (io_int_word
& IO_INT_WORD_AI
) {
2241 irq
.type
= KVM_S390_INT_IO(1, 0, 0, 0);
2243 irq
.type
= KVM_S390_INT_IO(0, (subchannel_id
& 0xff00) >> 8,
2244 (subchannel_id
& 0x0006),
2247 kvm_s390_floating_interrupt(&irq
);
2250 static uint64_t build_channel_report_mcic(void)
2254 /* subclass: indicate channel report pending */
2256 /* subclass modifiers: none */
2257 /* storage errors: none */
2258 /* validity bits: no damage */
2259 MCIC_VB_WP
| MCIC_VB_MS
| MCIC_VB_PM
| MCIC_VB_IA
| MCIC_VB_FP
|
2260 MCIC_VB_GR
| MCIC_VB_CR
| MCIC_VB_ST
| MCIC_VB_AR
| MCIC_VB_PR
|
2261 MCIC_VB_FC
| MCIC_VB_CT
| MCIC_VB_CC
;
2262 if (s390_has_feat(S390_FEAT_VECTOR
)) {
2265 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE
)) {
2271 void kvm_s390_crw_mchk(void)
2273 struct kvm_s390_irq irq
= {
2274 .type
= KVM_S390_MCHK
,
2275 .u
.mchk
.cr14
= 1 << 28,
2276 .u
.mchk
.mcic
= build_channel_report_mcic(),
2278 kvm_s390_floating_interrupt(&irq
);
2281 void kvm_s390_enable_css_support(S390CPU
*cpu
)
2285 /* Activate host kernel channel subsystem support. */
2286 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
2290 void kvm_arch_init_irq_routing(KVMState
*s
)
2293 * Note that while irqchip capabilities generally imply that cpustates
2294 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2295 * have to override the common code kvm_halt_in_kernel_allowed setting.
2297 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
2298 kvm_gsi_routing_allowed
= true;
2299 kvm_halt_in_kernel_allowed
= false;
2303 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
2304 int vq
, bool assign
)
2306 struct kvm_ioeventfd kick
= {
2307 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
2308 KVM_IOEVENTFD_FLAG_DATAMATCH
,
2309 .fd
= event_notifier_get_fd(notifier
),
2314 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
2318 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
2320 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
2323 int kvm_s390_get_memslot_count(void)
2325 return kvm_check_extension(kvm_state
, KVM_CAP_NR_MEMSLOTS
);
2328 int kvm_s390_get_ri(void)
2333 int kvm_s390_get_gs(void)
2338 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
2340 struct kvm_mp_state mp_state
= {};
2343 /* the kvm part might not have been initialized yet */
2344 if (CPU(cpu
)->kvm_state
== NULL
) {
2348 switch (cpu_state
) {
2349 case CPU_STATE_STOPPED
:
2350 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
2352 case CPU_STATE_CHECK_STOP
:
2353 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
2355 case CPU_STATE_OPERATING
:
2356 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
2358 case CPU_STATE_LOAD
:
2359 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
2362 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2367 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
2369 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
2376 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
2378 struct kvm_s390_irq_state irq_state
;
2379 CPUState
*cs
= CPU(cpu
);
2382 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2386 irq_state
.buf
= (uint64_t) cpu
->irqstate
;
2387 irq_state
.len
= VCPU_IRQ_BUF_SIZE
;
2389 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
2391 cpu
->irqstate_saved_size
= 0;
2392 error_report("Migration of interrupt state failed");
2396 cpu
->irqstate_saved_size
= bytes
;
2399 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
2401 CPUState
*cs
= CPU(cpu
);
2402 struct kvm_s390_irq_state irq_state
;
2405 if (cpu
->irqstate_saved_size
== 0) {
2409 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2413 irq_state
.buf
= (uint64_t) cpu
->irqstate
;
2414 irq_state
.len
= cpu
->irqstate_saved_size
;
2416 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
2418 error_report("Setting interrupt state failed %d", r
);
2423 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2424 uint64_t address
, uint32_t data
, PCIDevice
*dev
)
2426 S390PCIBusDevice
*pbdev
;
2427 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2430 DPRINTF("add_msi_route no pci device\n");
2434 pbdev
= s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev
)->id
);
2436 DPRINTF("add_msi_route no zpci device\n");
2440 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2442 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2443 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2444 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2445 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
+ vec
;
2446 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;
2450 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry
*route
,
2451 int vector
, PCIDevice
*dev
)
2456 int kvm_arch_release_virq_post(int virq
)
2461 int kvm_arch_msi_data_to_gsi(uint32_t data
)
2466 static int query_cpu_subfunc(S390FeatBitmap features
)
2468 struct kvm_s390_vm_cpu_subfunc prop
;
2469 struct kvm_device_attr attr
= {
2470 .group
= KVM_S390_VM_CPU_MODEL
,
2471 .attr
= KVM_S390_VM_CPU_MACHINE_SUBFUNC
,
2472 .addr
= (uint64_t) &prop
,
2476 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2482 * We're going to add all subfunctions now, if the corresponding feature
2483 * is available that unlocks the query functions.
2485 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2486 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2487 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2489 if (test_bit(S390_FEAT_MSA
, features
)) {
2490 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2491 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2492 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2493 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2494 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2496 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2497 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2499 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2500 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2501 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2502 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2503 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2505 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2506 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2508 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2509 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2514 static int configure_cpu_subfunc(const S390FeatBitmap features
)
2516 struct kvm_s390_vm_cpu_subfunc prop
= {};
2517 struct kvm_device_attr attr
= {
2518 .group
= KVM_S390_VM_CPU_MODEL
,
2519 .attr
= KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
,
2520 .addr
= (uint64_t) &prop
,
2523 if (!kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2524 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
)) {
2525 /* hardware support might be missing, IBC will handle most of this */
2529 s390_fill_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2530 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2531 s390_fill_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2533 if (test_bit(S390_FEAT_MSA
, features
)) {
2534 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2535 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2536 s390_fill_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2537 s390_fill_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2538 s390_fill_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2540 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2541 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2543 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2544 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2545 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2546 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2547 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2549 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2550 s390_fill_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2552 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2553 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2555 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2558 static int kvm_to_feat
[][2] = {
2559 { KVM_S390_VM_CPU_FEAT_ESOP
, S390_FEAT_ESOP
},
2560 { KVM_S390_VM_CPU_FEAT_SIEF2
, S390_FEAT_SIE_F2
},
2561 { KVM_S390_VM_CPU_FEAT_64BSCAO
, S390_FEAT_SIE_64BSCAO
},
2562 { KVM_S390_VM_CPU_FEAT_SIIF
, S390_FEAT_SIE_SIIF
},
2563 { KVM_S390_VM_CPU_FEAT_GPERE
, S390_FEAT_SIE_GPERE
},
2564 { KVM_S390_VM_CPU_FEAT_GSLS
, S390_FEAT_SIE_GSLS
},
2565 { KVM_S390_VM_CPU_FEAT_IB
, S390_FEAT_SIE_IB
},
2566 { KVM_S390_VM_CPU_FEAT_CEI
, S390_FEAT_SIE_CEI
},
2567 { KVM_S390_VM_CPU_FEAT_IBS
, S390_FEAT_SIE_IBS
},
2568 { KVM_S390_VM_CPU_FEAT_SKEY
, S390_FEAT_SIE_SKEY
},
2569 { KVM_S390_VM_CPU_FEAT_CMMA
, S390_FEAT_SIE_CMMA
},
2570 { KVM_S390_VM_CPU_FEAT_PFMFI
, S390_FEAT_SIE_PFMFI
},
2571 { KVM_S390_VM_CPU_FEAT_SIGPIF
, S390_FEAT_SIE_SIGPIF
},
2572 { KVM_S390_VM_CPU_FEAT_KSS
, S390_FEAT_SIE_KSS
},
2575 static int query_cpu_feat(S390FeatBitmap features
)
2577 struct kvm_s390_vm_cpu_feat prop
;
2578 struct kvm_device_attr attr
= {
2579 .group
= KVM_S390_VM_CPU_MODEL
,
2580 .attr
= KVM_S390_VM_CPU_MACHINE_FEAT
,
2581 .addr
= (uint64_t) &prop
,
2586 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2591 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2592 if (test_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
)) {
2593 set_bit(kvm_to_feat
[i
][1], features
);
2599 static int configure_cpu_feat(const S390FeatBitmap features
)
2601 struct kvm_s390_vm_cpu_feat prop
= {};
2602 struct kvm_device_attr attr
= {
2603 .group
= KVM_S390_VM_CPU_MODEL
,
2604 .attr
= KVM_S390_VM_CPU_PROCESSOR_FEAT
,
2605 .addr
= (uint64_t) &prop
,
2609 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2610 if (test_bit(kvm_to_feat
[i
][1], features
)) {
2611 set_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
);
2614 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2617 bool kvm_s390_cpu_models_supported(void)
2619 if (!cpu_model_allowed()) {
2620 /* compatibility machines interfere with the cpu model */
2623 return kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2624 KVM_S390_VM_CPU_MACHINE
) &&
2625 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2626 KVM_S390_VM_CPU_PROCESSOR
) &&
2627 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2628 KVM_S390_VM_CPU_MACHINE_FEAT
) &&
2629 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2630 KVM_S390_VM_CPU_PROCESSOR_FEAT
) &&
2631 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2632 KVM_S390_VM_CPU_MACHINE_SUBFUNC
);
2635 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
)
2637 struct kvm_s390_vm_cpu_machine prop
= {};
2638 struct kvm_device_attr attr
= {
2639 .group
= KVM_S390_VM_CPU_MODEL
,
2640 .attr
= KVM_S390_VM_CPU_MACHINE
,
2641 .addr
= (uint64_t) &prop
,
2643 uint16_t unblocked_ibc
= 0, cpu_type
= 0;
2646 memset(model
, 0, sizeof(*model
));
2648 if (!kvm_s390_cpu_models_supported()) {
2649 error_setg(errp
, "KVM doesn't support CPU models");
2653 /* query the basic cpu model properties */
2654 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2656 error_setg(errp
, "KVM: Error querying host CPU model: %d", rc
);
2660 cpu_type
= cpuid_type(prop
.cpuid
);
2661 if (has_ibc(prop
.ibc
)) {
2662 model
->lowest_ibc
= lowest_ibc(prop
.ibc
);
2663 unblocked_ibc
= unblocked_ibc(prop
.ibc
);
2665 model
->cpu_id
= cpuid_id(prop
.cpuid
);
2666 model
->cpu_id_format
= cpuid_format(prop
.cpuid
);
2667 model
->cpu_ver
= 0xff;
2669 /* get supported cpu features indicated via STFL(E) */
2670 s390_add_from_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2671 (uint8_t *) prop
.fac_mask
);
2672 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2673 if (test_bit(S390_FEAT_STFLE
, model
->features
)) {
2674 set_bit(S390_FEAT_DAT_ENH_2
, model
->features
);
2676 /* get supported cpu features indicated e.g. via SCLP */
2677 rc
= query_cpu_feat(model
->features
);
2679 error_setg(errp
, "KVM: Error querying CPU features: %d", rc
);
2682 /* get supported cpu subfunctions indicated via query / test bit */
2683 rc
= query_cpu_subfunc(model
->features
);
2685 error_setg(errp
, "KVM: Error querying CPU subfunctions: %d", rc
);
2689 /* with cpu model support, CMM is only indicated if really available */
2690 if (kvm_s390_cmma_available()) {
2691 set_bit(S390_FEAT_CMM
, model
->features
);
2693 /* no cmm -> no cmm nt */
2694 clear_bit(S390_FEAT_CMM_NT
, model
->features
);
2697 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2698 if (pci_available
) {
2699 set_bit(S390_FEAT_ZPCI
, model
->features
);
2701 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION
, model
->features
);
2703 if (s390_known_cpu_type(cpu_type
)) {
2704 /* we want the exact model, even if some features are missing */
2705 model
->def
= s390_find_cpu_def(cpu_type
, ibc_gen(unblocked_ibc
),
2706 ibc_ec_ga(unblocked_ibc
), NULL
);
2708 /* model unknown, e.g. too new - search using features */
2709 model
->def
= s390_find_cpu_def(0, ibc_gen(unblocked_ibc
),
2710 ibc_ec_ga(unblocked_ibc
),
2714 error_setg(errp
, "KVM: host CPU model could not be identified");
2717 /* strip of features that are not part of the maximum model */
2718 bitmap_and(model
->features
, model
->features
, model
->def
->full_feat
,
2722 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
2724 struct kvm_s390_vm_cpu_processor prop
= {
2727 struct kvm_device_attr attr
= {
2728 .group
= KVM_S390_VM_CPU_MODEL
,
2729 .attr
= KVM_S390_VM_CPU_PROCESSOR
,
2730 .addr
= (uint64_t) &prop
,
2735 /* compatibility handling if cpu models are disabled */
2736 if (kvm_s390_cmma_available()) {
2737 kvm_s390_enable_cmma();
2741 if (!kvm_s390_cpu_models_supported()) {
2742 error_setg(errp
, "KVM doesn't support CPU models");
2745 prop
.cpuid
= s390_cpuid_from_cpu_model(model
);
2746 prop
.ibc
= s390_ibc_from_cpu_model(model
);
2747 /* configure cpu features indicated via STFL(e) */
2748 s390_fill_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2749 (uint8_t *) prop
.fac_list
);
2750 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2752 error_setg(errp
, "KVM: Error configuring the CPU model: %d", rc
);
2755 /* configure cpu features indicated e.g. via SCLP */
2756 rc
= configure_cpu_feat(model
->features
);
2758 error_setg(errp
, "KVM: Error configuring CPU features: %d", rc
);
2761 /* configure cpu subfunctions indicated via query / test bit */
2762 rc
= configure_cpu_subfunc(model
->features
);
2764 error_setg(errp
, "KVM: Error configuring CPU subfunctions: %d", rc
);
2767 /* enable CMM via CMMA */
2768 if (test_bit(S390_FEAT_CMM
, model
->features
)) {
2769 kvm_s390_enable_cmma();