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 "qemu/error-report.h"
34 #include "qemu/timer.h"
35 #include "sysemu/sysemu.h"
36 #include "sysemu/hw_accel.h"
38 #include "sysemu/device_tree.h"
39 #include "qapi/qmp/qjson.h"
40 #include "exec/gdbstub.h"
41 #include "exec/address-spaces.h"
43 #include "qapi-event.h"
44 #include "hw/s390x/s390-pci-inst.h"
45 #include "hw/s390x/s390-pci-bus.h"
46 #include "hw/s390x/ipl.h"
47 #include "hw/s390x/ebcdic.h"
48 #include "exec/memattrs.h"
49 #include "hw/s390x/s390-virtio-ccw.h"
55 #define DPRINTF(fmt, ...) do { \
57 fprintf(stderr, fmt, ## __VA_ARGS__); \
61 #define kvm_vm_check_mem_attr(s, attr) \
62 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
64 #define IPA0_DIAG 0x8300
65 #define IPA0_SIGP 0xae00
66 #define IPA0_B2 0xb200
67 #define IPA0_B9 0xb900
68 #define IPA0_EB 0xeb00
69 #define IPA0_E3 0xe300
71 #define PRIV_B2_SCLP_CALL 0x20
72 #define PRIV_B2_CSCH 0x30
73 #define PRIV_B2_HSCH 0x31
74 #define PRIV_B2_MSCH 0x32
75 #define PRIV_B2_SSCH 0x33
76 #define PRIV_B2_STSCH 0x34
77 #define PRIV_B2_TSCH 0x35
78 #define PRIV_B2_TPI 0x36
79 #define PRIV_B2_SAL 0x37
80 #define PRIV_B2_RSCH 0x38
81 #define PRIV_B2_STCRW 0x39
82 #define PRIV_B2_STCPS 0x3a
83 #define PRIV_B2_RCHP 0x3b
84 #define PRIV_B2_SCHM 0x3c
85 #define PRIV_B2_CHSC 0x5f
86 #define PRIV_B2_SIGA 0x74
87 #define PRIV_B2_XSCH 0x76
89 #define PRIV_EB_SQBS 0x8a
90 #define PRIV_EB_PCISTB 0xd0
91 #define PRIV_EB_SIC 0xd1
93 #define PRIV_B9_EQBS 0x9c
94 #define PRIV_B9_CLP 0xa0
95 #define PRIV_B9_PCISTG 0xd0
96 #define PRIV_B9_PCILG 0xd2
97 #define PRIV_B9_RPCIT 0xd3
99 #define PRIV_E3_MPCIFC 0xd0
100 #define PRIV_E3_STPCIFC 0xd4
102 #define DIAG_TIMEREVENT 0x288
103 #define DIAG_IPL 0x308
104 #define DIAG_KVM_HYPERCALL 0x500
105 #define DIAG_KVM_BREAKPOINT 0x501
107 #define ICPT_INSTRUCTION 0x04
108 #define ICPT_PROGRAM 0x08
109 #define ICPT_EXT_INT 0x14
110 #define ICPT_WAITPSW 0x1c
111 #define ICPT_SOFT_INTERCEPT 0x24
112 #define ICPT_CPU_STOP 0x28
113 #define ICPT_OPEREXC 0x2c
116 #define NR_LOCAL_IRQS 32
118 * Needs to be big enough to contain max_cpus emergency signals
119 * and in addition NR_LOCAL_IRQS interrupts
121 #define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
122 (max_cpus + NR_LOCAL_IRQS))
124 static CPUWatchpoint hw_watchpoint
;
126 * We don't use a list because this structure is also used to transmit the
127 * hardware breakpoints to the kernel.
129 static struct kvm_hw_breakpoint
*hw_breakpoints
;
130 static int nb_hw_breakpoints
;
132 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
136 static QemuMutex qemu_sigp_mutex
;
138 static int cap_sync_regs
;
139 static int cap_async_pf
;
140 static int cap_mem_op
;
141 static int cap_s390_irq
;
145 static int active_cmma
;
147 static void *legacy_s390_alloc(size_t size
, uint64_t *align
);
149 static int kvm_s390_query_mem_limit(uint64_t *memory_limit
)
151 struct kvm_device_attr attr
= {
152 .group
= KVM_S390_VM_MEM_CTRL
,
153 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
154 .addr
= (uint64_t) memory_limit
,
157 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
160 int kvm_s390_set_mem_limit(uint64_t new_limit
, uint64_t *hw_limit
)
164 struct kvm_device_attr attr
= {
165 .group
= KVM_S390_VM_MEM_CTRL
,
166 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
167 .addr
= (uint64_t) &new_limit
,
170 if (!kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
174 rc
= kvm_s390_query_mem_limit(hw_limit
);
177 } else if (*hw_limit
< new_limit
) {
181 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
184 int kvm_s390_cmma_active(void)
189 static bool kvm_s390_cmma_available(void)
191 static bool initialized
, value
;
195 value
= kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_ENABLE_CMMA
) &&
196 kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_CLR_CMMA
);
201 void kvm_s390_cmma_reset(void)
204 struct kvm_device_attr attr
= {
205 .group
= KVM_S390_VM_MEM_CTRL
,
206 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
209 if (!kvm_s390_cmma_active()) {
213 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
214 trace_kvm_clear_cmma(rc
);
217 static void kvm_s390_enable_cmma(void)
220 struct kvm_device_attr attr
= {
221 .group
= KVM_S390_VM_MEM_CTRL
,
222 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
226 error_report("Warning: CMM will not be enabled because it is not "
227 "compatible to hugetlbfs.");
230 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
232 trace_kvm_enable_cmma(rc
);
235 static void kvm_s390_set_attr(uint64_t attr
)
237 struct kvm_device_attr attribute
= {
238 .group
= KVM_S390_VM_CRYPTO
,
242 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
245 error_report("Failed to set crypto device attribute %lu: %s",
246 attr
, strerror(-ret
));
250 static void kvm_s390_init_aes_kw(void)
252 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
254 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
256 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
259 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
260 kvm_s390_set_attr(attr
);
264 static void kvm_s390_init_dea_kw(void)
266 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
268 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
270 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
273 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
274 kvm_s390_set_attr(attr
);
278 void kvm_s390_crypto_reset(void)
280 if (s390_has_feat(S390_FEAT_MSA_EXT_3
)) {
281 kvm_s390_init_aes_kw();
282 kvm_s390_init_dea_kw();
286 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
288 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
289 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
290 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
291 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
293 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
294 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
295 phys_mem_set_alloc(legacy_s390_alloc
);
298 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
299 kvm_vm_enable_cap(s
, KVM_CAP_S390_VECTOR_REGISTERS
, 0);
300 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
302 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_RI
, 0) == 0) {
307 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_GS
, 0) == 0) {
312 /* Try to enable AIS facility */
313 kvm_vm_enable_cap(s
, KVM_CAP_S390_AIS
, 0);
315 qemu_mutex_init(&qemu_sigp_mutex
);
320 int kvm_arch_irqchip_create(MachineState
*ms
, KVMState
*s
)
325 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
327 return cpu
->cpu_index
;
330 int kvm_arch_init_vcpu(CPUState
*cs
)
332 S390CPU
*cpu
= S390_CPU(cs
);
333 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
334 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE
);
338 void kvm_s390_reset_vcpu(S390CPU
*cpu
)
340 CPUState
*cs
= CPU(cpu
);
342 /* The initial reset call is needed here to reset in-kernel
343 * vcpu data that we can't access directly from QEMU
344 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
345 * Before this ioctl cpu_synchronize_state() is called in common kvm
347 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
)) {
348 error_report("Initial CPU reset failed on CPU %i", cs
->cpu_index
);
352 static int can_sync_regs(CPUState
*cs
, int regs
)
354 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
357 int kvm_arch_put_registers(CPUState
*cs
, int level
)
359 S390CPU
*cpu
= S390_CPU(cs
);
360 CPUS390XState
*env
= &cpu
->env
;
361 struct kvm_sregs sregs
;
362 struct kvm_regs regs
;
363 struct kvm_fpu fpu
= {};
367 /* always save the PSW and the GPRS*/
368 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
369 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
371 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
372 for (i
= 0; i
< 16; i
++) {
373 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
374 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
377 for (i
= 0; i
< 16; i
++) {
378 regs
.gprs
[i
] = env
->regs
[i
];
380 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
386 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
387 for (i
= 0; i
< 32; i
++) {
388 cs
->kvm_run
->s
.regs
.vrs
[i
][0] = env
->vregs
[i
][0].ll
;
389 cs
->kvm_run
->s
.regs
.vrs
[i
][1] = env
->vregs
[i
][1].ll
;
391 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
392 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_VRS
;
393 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
394 for (i
= 0; i
< 16; i
++) {
395 cs
->kvm_run
->s
.regs
.fprs
[i
] = get_freg(env
, i
)->ll
;
397 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
398 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_FPRS
;
401 for (i
= 0; i
< 16; i
++) {
402 fpu
.fprs
[i
] = get_freg(env
, i
)->ll
;
406 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
412 /* Do we need to save more than that? */
413 if (level
== KVM_PUT_RUNTIME_STATE
) {
417 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
418 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
419 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
420 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
421 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
422 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
423 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
426 * These ONE_REGS are not protected by a capability. As they are only
427 * necessary for migration we just trace a possible error, but don't
428 * return with an error return code.
430 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
431 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
432 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
433 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
434 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
437 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
438 memcpy(cs
->kvm_run
->s
.regs
.riccb
, env
->riccb
, 64);
439 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_RICCB
;
442 /* pfault parameters */
443 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
444 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
445 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
446 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
447 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
448 } else if (cap_async_pf
) {
449 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
453 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
457 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
463 /* access registers and control registers*/
464 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
465 for (i
= 0; i
< 16; i
++) {
466 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
467 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
469 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
470 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
472 for (i
= 0; i
< 16; i
++) {
473 sregs
.acrs
[i
] = env
->aregs
[i
];
474 sregs
.crs
[i
] = env
->cregs
[i
];
476 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
482 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
483 memcpy(cs
->kvm_run
->s
.regs
.gscb
, env
->gscb
, 32);
484 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GSCB
;
487 /* Finally the prefix */
488 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
489 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
490 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
492 /* prefix is only supported via sync regs */
497 int kvm_arch_get_registers(CPUState
*cs
)
499 S390CPU
*cpu
= S390_CPU(cs
);
500 CPUS390XState
*env
= &cpu
->env
;
501 struct kvm_sregs sregs
;
502 struct kvm_regs regs
;
507 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
508 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
511 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
512 for (i
= 0; i
< 16; i
++) {
513 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
516 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
520 for (i
= 0; i
< 16; i
++) {
521 env
->regs
[i
] = regs
.gprs
[i
];
525 /* The ACRS and CRS */
526 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
527 for (i
= 0; i
< 16; i
++) {
528 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
529 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
532 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
536 for (i
= 0; i
< 16; i
++) {
537 env
->aregs
[i
] = sregs
.acrs
[i
];
538 env
->cregs
[i
] = sregs
.crs
[i
];
542 /* Floating point and vector registers */
543 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
544 for (i
= 0; i
< 32; i
++) {
545 env
->vregs
[i
][0].ll
= cs
->kvm_run
->s
.regs
.vrs
[i
][0];
546 env
->vregs
[i
][1].ll
= cs
->kvm_run
->s
.regs
.vrs
[i
][1];
548 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
549 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
550 for (i
= 0; i
< 16; i
++) {
551 get_freg(env
, i
)->ll
= cs
->kvm_run
->s
.regs
.fprs
[i
];
553 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
555 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
559 for (i
= 0; i
< 16; i
++) {
560 get_freg(env
, i
)->ll
= fpu
.fprs
[i
];
566 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
567 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
570 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
571 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
572 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
573 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
574 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
575 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
578 * These ONE_REGS are not protected by a capability. As they are only
579 * necessary for migration we just trace a possible error, but don't
580 * return with an error return code.
582 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
583 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
584 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
585 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
586 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
589 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
590 memcpy(env
->riccb
, cs
->kvm_run
->s
.regs
.riccb
, 64);
593 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
594 memcpy(env
->gscb
, cs
->kvm_run
->s
.regs
.gscb
, 32);
597 /* pfault parameters */
598 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
599 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
600 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
601 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
602 } else if (cap_async_pf
) {
603 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
607 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
611 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
620 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
623 struct kvm_device_attr attr
= {
624 .group
= KVM_S390_VM_TOD
,
625 .attr
= KVM_S390_VM_TOD_LOW
,
626 .addr
= (uint64_t)tod_low
,
629 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
634 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
635 attr
.addr
= (uint64_t)tod_high
;
636 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
639 int kvm_s390_set_clock(uint8_t *tod_high
, uint64_t *tod_low
)
643 struct kvm_device_attr attr
= {
644 .group
= KVM_S390_VM_TOD
,
645 .attr
= KVM_S390_VM_TOD_LOW
,
646 .addr
= (uint64_t)tod_low
,
649 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
654 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
655 attr
.addr
= (uint64_t)tod_high
;
656 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
661 * @addr: the logical start address in guest memory
662 * @ar: the access register number
663 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
664 * @len: length that should be transferred
665 * @is_write: true = write, false = read
666 * Returns: 0 on success, non-zero if an exception or error occurred
668 * Use KVM ioctl to read/write from/to guest memory. An access exception
669 * is injected into the vCPU in case of translation errors.
671 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
672 int len
, bool is_write
)
674 struct kvm_s390_mem_op mem_op
= {
676 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
678 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
679 : KVM_S390_MEMOP_LOGICAL_READ
,
680 .buf
= (uint64_t)hostbuf
,
689 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
692 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
694 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret
));
700 * Legacy layout for s390:
701 * Older S390 KVM requires the topmost vma of the RAM to be
702 * smaller than an system defined value, which is at least 256GB.
703 * Larger systems have larger values. We put the guest between
704 * the end of data segment (system break) and this value. We
705 * use 32GB as a base to have enough room for the system break
706 * to grow. We also have to use MAP parameters that avoid
707 * read-only mapping of guest pages.
709 static void *legacy_s390_alloc(size_t size
, uint64_t *align
)
713 mem
= mmap((void *) 0x800000000ULL
, size
,
714 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
715 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
716 return mem
== MAP_FAILED
? NULL
: mem
;
719 static uint8_t const *sw_bp_inst
;
720 static uint8_t sw_bp_ilen
;
722 static void determine_sw_breakpoint_instr(void)
724 /* DIAG 501 is used for sw breakpoints with old kernels */
725 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
726 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
727 static const uint8_t instr_0x0000
[] = {0x00, 0x00};
732 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_USER_INSTR0
, 0)) {
733 sw_bp_inst
= diag_501
;
734 sw_bp_ilen
= sizeof(diag_501
);
735 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
737 sw_bp_inst
= instr_0x0000
;
738 sw_bp_ilen
= sizeof(instr_0x0000
);
739 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
743 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
745 determine_sw_breakpoint_instr();
747 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
749 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)sw_bp_inst
, sw_bp_ilen
, 1)) {
755 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
759 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sw_bp_ilen
, 0)) {
761 } else if (memcmp(t
, sw_bp_inst
, sw_bp_ilen
)) {
763 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
771 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
776 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
777 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
778 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
779 return &hw_breakpoints
[n
];
786 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
790 if (find_hw_breakpoint(addr
, len
, type
)) {
794 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
796 if (!hw_breakpoints
) {
797 nb_hw_breakpoints
= 0;
798 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
801 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
804 if (!hw_breakpoints
) {
805 nb_hw_breakpoints
= 0;
809 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
810 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
811 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
818 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
819 target_ulong len
, int type
)
822 case GDB_BREAKPOINT_HW
:
825 case GDB_WATCHPOINT_WRITE
:
829 type
= KVM_HW_WP_WRITE
;
834 return insert_hw_breakpoint(addr
, len
, type
);
837 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
838 target_ulong len
, int type
)
841 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
848 if (nb_hw_breakpoints
> 0) {
850 * In order to trim the array, move the last element to the position to
851 * be removed - if necessary.
853 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
854 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
856 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
858 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
860 g_free(hw_breakpoints
);
861 hw_breakpoints
= NULL
;
867 void kvm_arch_remove_all_hw_breakpoints(void)
869 nb_hw_breakpoints
= 0;
870 g_free(hw_breakpoints
);
871 hw_breakpoints
= NULL
;
874 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
878 if (nb_hw_breakpoints
> 0) {
879 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
880 dbg
->arch
.hw_bp
= hw_breakpoints
;
882 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
883 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
884 hw_breakpoints
[i
].addr
);
886 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
888 dbg
->arch
.nr_hw_bp
= 0;
889 dbg
->arch
.hw_bp
= NULL
;
893 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
897 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
899 return MEMTXATTRS_UNSPECIFIED
;
902 int kvm_arch_process_async_events(CPUState
*cs
)
907 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
908 struct kvm_s390_interrupt
*interrupt
)
912 interrupt
->type
= irq
->type
;
914 case KVM_S390_INT_VIRTIO
:
915 interrupt
->parm
= irq
->u
.ext
.ext_params
;
917 case KVM_S390_INT_PFAULT_INIT
:
918 case KVM_S390_INT_PFAULT_DONE
:
919 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
921 case KVM_S390_PROGRAM_INT
:
922 interrupt
->parm
= irq
->u
.pgm
.code
;
924 case KVM_S390_SIGP_SET_PREFIX
:
925 interrupt
->parm
= irq
->u
.prefix
.address
;
927 case KVM_S390_INT_SERVICE
:
928 interrupt
->parm
= irq
->u
.ext
.ext_params
;
931 interrupt
->parm
= irq
->u
.mchk
.cr14
;
932 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
934 case KVM_S390_INT_EXTERNAL_CALL
:
935 interrupt
->parm
= irq
->u
.extcall
.code
;
937 case KVM_S390_INT_EMERGENCY
:
938 interrupt
->parm
= irq
->u
.emerg
.code
;
940 case KVM_S390_SIGP_STOP
:
941 case KVM_S390_RESTART
:
942 break; /* These types have no parameters */
943 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
944 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
945 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
946 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
947 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
956 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
958 struct kvm_s390_interrupt kvmint
= {};
961 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
963 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
967 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
969 fprintf(stderr
, "KVM failed to inject interrupt\n");
974 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
976 CPUState
*cs
= CPU(cpu
);
980 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
984 error_report("KVM failed to inject interrupt %llx", irq
->type
);
988 inject_vcpu_irq_legacy(cs
, irq
);
991 static void __kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
993 struct kvm_s390_interrupt kvmint
= {};
996 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
998 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1002 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
1004 fprintf(stderr
, "KVM failed to inject interrupt\n");
1009 void kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
1011 static bool use_flic
= true;
1015 r
= kvm_s390_inject_flic(irq
);
1023 __kvm_s390_floating_interrupt(irq
);
1026 void kvm_s390_service_interrupt(uint32_t parm
)
1028 struct kvm_s390_irq irq
= {
1029 .type
= KVM_S390_INT_SERVICE
,
1030 .u
.ext
.ext_params
= parm
,
1033 kvm_s390_floating_interrupt(&irq
);
1036 void kvm_s390_program_interrupt(S390CPU
*cpu
, uint16_t code
)
1038 struct kvm_s390_irq irq
= {
1039 .type
= KVM_S390_PROGRAM_INT
,
1043 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1046 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
1048 struct kvm_s390_irq irq
= {
1049 .type
= KVM_S390_PROGRAM_INT
,
1051 .u
.pgm
.trans_exc_code
= te_code
,
1052 .u
.pgm
.exc_access_id
= te_code
& 3,
1055 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1058 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
1061 CPUS390XState
*env
= &cpu
->env
;
1066 cpu_synchronize_state(CPU(cpu
));
1067 sccb
= env
->regs
[ipbh0
& 0xf];
1068 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
1070 r
= sclp_service_call(env
, sccb
, code
);
1072 kvm_s390_program_interrupt(cpu
, -r
);
1080 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1082 CPUS390XState
*env
= &cpu
->env
;
1084 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
1086 cpu_synchronize_state(CPU(cpu
));
1090 ioinst_handle_xsch(cpu
, env
->regs
[1]);
1093 ioinst_handle_csch(cpu
, env
->regs
[1]);
1096 ioinst_handle_hsch(cpu
, env
->regs
[1]);
1099 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1102 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1105 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
);
1108 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1111 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1112 fprintf(stderr
, "Spurious tsch intercept\n");
1115 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
);
1118 /* This should have been handled by kvm already. */
1119 fprintf(stderr
, "Spurious tpi intercept\n");
1122 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1123 run
->s390_sieic
.ipb
);
1126 ioinst_handle_rsch(cpu
, env
->regs
[1]);
1129 ioinst_handle_rchp(cpu
, env
->regs
[1]);
1132 /* We do not provide this instruction, it is suppressed. */
1135 ioinst_handle_sal(cpu
, env
->regs
[1]);
1138 /* Not provided, set CC = 3 for subchannel not operational */
1141 case PRIV_B2_SCLP_CALL
:
1142 rc
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
1146 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1153 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1156 CPUS390XState
*env
= &cpu
->env
;
1157 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1158 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1159 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1160 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1162 if (disp2
& 0x80000) {
1163 disp2
+= 0xfff00000;
1169 return (base2
? env
->regs
[base2
] : 0) +
1170 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1173 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1176 CPUS390XState
*env
= &cpu
->env
;
1177 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1178 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1179 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1181 if (disp2
& 0x80000) {
1182 disp2
+= 0xfff00000;
1188 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1191 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1193 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1195 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1196 return clp_service_call(cpu
, r2
);
1202 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1204 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1205 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1207 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1208 return pcilg_service_call(cpu
, r1
, r2
);
1214 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1216 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1217 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1219 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1220 return pcistg_service_call(cpu
, r1
, r2
);
1226 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1228 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1232 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1233 cpu_synchronize_state(CPU(cpu
));
1234 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1236 return stpcifc_service_call(cpu
, r1
, fiba
, ar
);
1242 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1244 CPUS390XState
*env
= &cpu
->env
;
1245 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1246 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1251 cpu_synchronize_state(CPU(cpu
));
1252 mode
= env
->regs
[r1
] & 0xffff;
1253 isc
= (env
->regs
[r3
] >> 27) & 0x7;
1254 r
= css_do_sic(env
, isc
, mode
);
1256 kvm_s390_program_interrupt(cpu
, -r
);
1262 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1264 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1265 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1267 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1268 return rpcit_service_call(cpu
, r1
, r2
);
1274 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1276 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1277 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1281 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1282 cpu_synchronize_state(CPU(cpu
));
1283 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1285 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
);
1291 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1293 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1297 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1298 cpu_synchronize_state(CPU(cpu
));
1299 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1301 return mpcifc_service_call(cpu
, r1
, fiba
, ar
);
1307 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1313 r
= kvm_clp_service_call(cpu
, run
);
1315 case PRIV_B9_PCISTG
:
1316 r
= kvm_pcistg_service_call(cpu
, run
);
1319 r
= kvm_pcilg_service_call(cpu
, run
);
1322 r
= kvm_rpcit_service_call(cpu
, run
);
1325 /* just inject exception */
1330 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1337 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1342 case PRIV_EB_PCISTB
:
1343 r
= kvm_pcistb_service_call(cpu
, run
);
1346 r
= kvm_sic_service_call(cpu
, run
);
1349 /* just inject exception */
1354 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1361 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1366 case PRIV_E3_MPCIFC
:
1367 r
= kvm_mpcifc_service_call(cpu
, run
);
1369 case PRIV_E3_STPCIFC
:
1370 r
= kvm_stpcifc_service_call(cpu
, run
);
1374 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1381 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1383 CPUS390XState
*env
= &cpu
->env
;
1386 cpu_synchronize_state(CPU(cpu
));
1387 ret
= s390_virtio_hypercall(env
);
1388 if (ret
== -EINVAL
) {
1389 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1396 static void kvm_handle_diag_288(S390CPU
*cpu
, struct kvm_run
*run
)
1401 cpu_synchronize_state(CPU(cpu
));
1402 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1403 r3
= run
->s390_sieic
.ipa
& 0x000f;
1404 rc
= handle_diag_288(&cpu
->env
, r1
, r3
);
1406 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1410 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1414 cpu_synchronize_state(CPU(cpu
));
1415 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1416 r3
= run
->s390_sieic
.ipa
& 0x000f;
1417 handle_diag_308(&cpu
->env
, r1
, r3
);
1420 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1422 CPUS390XState
*env
= &cpu
->env
;
1425 cpu_synchronize_state(CPU(cpu
));
1427 pc
= env
->psw
.addr
- sw_bp_ilen
;
1428 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1436 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1438 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1444 * For any diagnose call we support, bits 48-63 of the resulting
1445 * address specify the function code; the remainder is ignored.
1447 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1448 switch (func_code
) {
1449 case DIAG_TIMEREVENT
:
1450 kvm_handle_diag_288(cpu
, run
);
1453 kvm_handle_diag_308(cpu
, run
);
1455 case DIAG_KVM_HYPERCALL
:
1456 r
= handle_hypercall(cpu
, run
);
1458 case DIAG_KVM_BREAKPOINT
:
1459 r
= handle_sw_breakpoint(cpu
, run
);
1462 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1463 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1470 typedef struct SigpInfo
{
1473 uint64_t *status_reg
;
1476 static void set_sigp_status(SigpInfo
*si
, uint64_t status
)
1478 *si
->status_reg
&= 0xffffffff00000000ULL
;
1479 *si
->status_reg
|= status
;
1480 si
->cc
= SIGP_CC_STATUS_STORED
;
1483 static void sigp_start(CPUState
*cs
, run_on_cpu_data arg
)
1485 S390CPU
*cpu
= S390_CPU(cs
);
1486 SigpInfo
*si
= arg
.host_ptr
;
1488 if (s390_cpu_get_state(cpu
) != CPU_STATE_STOPPED
) {
1489 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1493 s390_cpu_set_state(CPU_STATE_OPERATING
, cpu
);
1494 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1497 static void sigp_stop(CPUState
*cs
, run_on_cpu_data arg
)
1499 S390CPU
*cpu
= S390_CPU(cs
);
1500 SigpInfo
*si
= arg
.host_ptr
;
1501 struct kvm_s390_irq irq
= {
1502 .type
= KVM_S390_SIGP_STOP
,
1505 if (s390_cpu_get_state(cpu
) != CPU_STATE_OPERATING
) {
1506 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1510 /* disabled wait - sleeping in user space */
1512 s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
);
1514 /* execute the stop function */
1515 cpu
->env
.sigp_order
= SIGP_STOP
;
1516 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1518 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1521 #define ADTL_GS_OFFSET 1024 /* offset of GS data in adtl save area */
1522 #define ADTL_GS_MIN_SIZE 2048 /* minimal size of adtl save area for GS */
1523 static int do_store_adtl_status(S390CPU
*cpu
, hwaddr addr
, hwaddr len
)
1528 mem
= cpu_physical_memory_map(addr
, &save
, 1);
1533 cpu_physical_memory_unmap(mem
, len
, 1, 0);
1537 if (s390_has_feat(S390_FEAT_VECTOR
)) {
1538 memcpy(mem
, &cpu
->env
.vregs
, 512);
1540 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE
) && len
>= ADTL_GS_MIN_SIZE
) {
1541 memcpy(mem
+ ADTL_GS_OFFSET
, &cpu
->env
.gscb
, 32);
1544 cpu_physical_memory_unmap(mem
, len
, 1, len
);
1549 #define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1550 #define SAVE_AREA_SIZE 512
1551 static int kvm_s390_store_status(S390CPU
*cpu
, hwaddr addr
, bool store_arch
)
1553 static const uint8_t ar_id
= 1;
1554 uint64_t ckc
= cpu
->env
.ckc
>> 8;
1557 hwaddr len
= SAVE_AREA_SIZE
;
1559 mem
= cpu_physical_memory_map(addr
, &len
, 1);
1563 if (len
!= SAVE_AREA_SIZE
) {
1564 cpu_physical_memory_unmap(mem
, len
, 1, 0);
1569 cpu_physical_memory_write(offsetof(LowCore
, ar_access_id
), &ar_id
, 1);
1571 for (i
= 0; i
< 16; ++i
) {
1572 *((uint64_t *)mem
+ i
) = get_freg(&cpu
->env
, i
)->ll
;
1574 memcpy(mem
+ 128, &cpu
->env
.regs
, 128);
1575 memcpy(mem
+ 256, &cpu
->env
.psw
, 16);
1576 memcpy(mem
+ 280, &cpu
->env
.psa
, 4);
1577 memcpy(mem
+ 284, &cpu
->env
.fpc
, 4);
1578 memcpy(mem
+ 292, &cpu
->env
.todpr
, 4);
1579 memcpy(mem
+ 296, &cpu
->env
.cputm
, 8);
1580 memcpy(mem
+ 304, &ckc
, 8);
1581 memcpy(mem
+ 320, &cpu
->env
.aregs
, 64);
1582 memcpy(mem
+ 384, &cpu
->env
.cregs
, 128);
1584 cpu_physical_memory_unmap(mem
, len
, 1, len
);
1589 static void sigp_stop_and_store_status(CPUState
*cs
, run_on_cpu_data arg
)
1591 S390CPU
*cpu
= S390_CPU(cs
);
1592 SigpInfo
*si
= arg
.host_ptr
;
1593 struct kvm_s390_irq irq
= {
1594 .type
= KVM_S390_SIGP_STOP
,
1597 /* disabled wait - sleeping in user space */
1598 if (s390_cpu_get_state(cpu
) == CPU_STATE_OPERATING
&& cs
->halted
) {
1599 s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
);
1602 switch (s390_cpu_get_state(cpu
)) {
1603 case CPU_STATE_OPERATING
:
1604 cpu
->env
.sigp_order
= SIGP_STOP_STORE_STATUS
;
1605 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1606 /* store will be performed when handling the stop intercept */
1608 case CPU_STATE_STOPPED
:
1609 /* already stopped, just store the status */
1610 cpu_synchronize_state(cs
);
1611 kvm_s390_store_status(cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
, true);
1614 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1617 static void sigp_store_status_at_address(CPUState
*cs
, run_on_cpu_data arg
)
1619 S390CPU
*cpu
= S390_CPU(cs
);
1620 SigpInfo
*si
= arg
.host_ptr
;
1621 uint32_t address
= si
->param
& 0x7ffffe00u
;
1623 /* cpu has to be stopped */
1624 if (s390_cpu_get_state(cpu
) != CPU_STATE_STOPPED
) {
1625 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1629 cpu_synchronize_state(cs
);
1631 if (kvm_s390_store_status(cpu
, address
, false)) {
1632 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1635 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1638 #define ADTL_SAVE_LC_MASK 0xfUL
1639 static void sigp_store_adtl_status(CPUState
*cs
, run_on_cpu_data arg
)
1641 S390CPU
*cpu
= S390_CPU(cs
);
1642 SigpInfo
*si
= arg
.host_ptr
;
1643 uint8_t lc
= si
->param
& ADTL_SAVE_LC_MASK
;
1644 hwaddr addr
= si
->param
& ~ADTL_SAVE_LC_MASK
;
1645 hwaddr len
= 1UL << (lc
? lc
: 10);
1647 if (!s390_has_feat(S390_FEAT_VECTOR
) &&
1648 !s390_has_feat(S390_FEAT_GUARDED_STORAGE
)) {
1649 set_sigp_status(si
, SIGP_STAT_INVALID_ORDER
);
1653 /* cpu has to be stopped */
1654 if (s390_cpu_get_state(cpu
) != CPU_STATE_STOPPED
) {
1655 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1659 /* address must be aligned to length */
1660 if (addr
& (len
- 1)) {
1661 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1665 /* no GS: only lc == 0 is valid */
1666 if (!s390_has_feat(S390_FEAT_GUARDED_STORAGE
) &&
1668 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1672 /* GS: 0, 10, 11, 12 are valid */
1673 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE
) &&
1678 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1682 cpu_synchronize_state(cs
);
1684 if (do_store_adtl_status(cpu
, addr
, len
)) {
1685 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1688 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1691 static void sigp_restart(CPUState
*cs
, run_on_cpu_data arg
)
1693 S390CPU
*cpu
= S390_CPU(cs
);
1694 SigpInfo
*si
= arg
.host_ptr
;
1695 struct kvm_s390_irq irq
= {
1696 .type
= KVM_S390_RESTART
,
1699 switch (s390_cpu_get_state(cpu
)) {
1700 case CPU_STATE_STOPPED
:
1701 /* the restart irq has to be delivered prior to any other pending irq */
1702 cpu_synchronize_state(cs
);
1703 do_restart_interrupt(&cpu
->env
);
1704 s390_cpu_set_state(CPU_STATE_OPERATING
, cpu
);
1706 case CPU_STATE_OPERATING
:
1707 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1710 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1713 int kvm_s390_cpu_restart(S390CPU
*cpu
)
1717 run_on_cpu(CPU(cpu
), sigp_restart
, RUN_ON_CPU_HOST_PTR(&si
));
1718 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu
->env
);
1722 static void sigp_initial_cpu_reset(CPUState
*cs
, run_on_cpu_data arg
)
1724 S390CPU
*cpu
= S390_CPU(cs
);
1725 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
1726 SigpInfo
*si
= arg
.host_ptr
;
1728 cpu_synchronize_state(cs
);
1729 scc
->initial_cpu_reset(cs
);
1730 cpu_synchronize_post_reset(cs
);
1731 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1734 static void sigp_cpu_reset(CPUState
*cs
, run_on_cpu_data arg
)
1736 S390CPU
*cpu
= S390_CPU(cs
);
1737 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
1738 SigpInfo
*si
= arg
.host_ptr
;
1740 cpu_synchronize_state(cs
);
1742 cpu_synchronize_post_reset(cs
);
1743 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1746 static void sigp_set_prefix(CPUState
*cs
, run_on_cpu_data arg
)
1748 S390CPU
*cpu
= S390_CPU(cs
);
1749 SigpInfo
*si
= arg
.host_ptr
;
1750 uint32_t addr
= si
->param
& 0x7fffe000u
;
1752 cpu_synchronize_state(cs
);
1754 if (!address_space_access_valid(&address_space_memory
, addr
,
1755 sizeof(struct LowCore
), false)) {
1756 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1760 /* cpu has to be stopped */
1761 if (s390_cpu_get_state(cpu
) != CPU_STATE_STOPPED
) {
1762 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1766 cpu
->env
.psa
= addr
;
1767 cpu_synchronize_post_init(cs
);
1768 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1771 static int handle_sigp_single_dst(S390CPU
*dst_cpu
, uint8_t order
,
1772 uint64_t param
, uint64_t *status_reg
)
1776 .status_reg
= status_reg
,
1779 /* cpu available? */
1780 if (dst_cpu
== NULL
) {
1781 return SIGP_CC_NOT_OPERATIONAL
;
1784 /* only resets can break pending orders */
1785 if (dst_cpu
->env
.sigp_order
!= 0 &&
1786 order
!= SIGP_CPU_RESET
&&
1787 order
!= SIGP_INITIAL_CPU_RESET
) {
1788 return SIGP_CC_BUSY
;
1793 run_on_cpu(CPU(dst_cpu
), sigp_start
, RUN_ON_CPU_HOST_PTR(&si
));
1796 run_on_cpu(CPU(dst_cpu
), sigp_stop
, RUN_ON_CPU_HOST_PTR(&si
));
1799 run_on_cpu(CPU(dst_cpu
), sigp_restart
, RUN_ON_CPU_HOST_PTR(&si
));
1801 case SIGP_STOP_STORE_STATUS
:
1802 run_on_cpu(CPU(dst_cpu
), sigp_stop_and_store_status
, RUN_ON_CPU_HOST_PTR(&si
));
1804 case SIGP_STORE_STATUS_ADDR
:
1805 run_on_cpu(CPU(dst_cpu
), sigp_store_status_at_address
, RUN_ON_CPU_HOST_PTR(&si
));
1807 case SIGP_STORE_ADTL_STATUS
:
1808 run_on_cpu(CPU(dst_cpu
), sigp_store_adtl_status
, RUN_ON_CPU_HOST_PTR(&si
));
1810 case SIGP_SET_PREFIX
:
1811 run_on_cpu(CPU(dst_cpu
), sigp_set_prefix
, RUN_ON_CPU_HOST_PTR(&si
));
1813 case SIGP_INITIAL_CPU_RESET
:
1814 run_on_cpu(CPU(dst_cpu
), sigp_initial_cpu_reset
, RUN_ON_CPU_HOST_PTR(&si
));
1816 case SIGP_CPU_RESET
:
1817 run_on_cpu(CPU(dst_cpu
), sigp_cpu_reset
, RUN_ON_CPU_HOST_PTR(&si
));
1820 DPRINTF("KVM: unknown SIGP: 0x%x\n", order
);
1821 set_sigp_status(&si
, SIGP_STAT_INVALID_ORDER
);
1827 static int sigp_set_architecture(S390CPU
*cpu
, uint32_t param
,
1828 uint64_t *status_reg
)
1832 bool all_stopped
= true;
1834 CPU_FOREACH(cur_cs
) {
1835 cur_cpu
= S390_CPU(cur_cs
);
1837 if (cur_cpu
== cpu
) {
1840 if (s390_cpu_get_state(cur_cpu
) != CPU_STATE_STOPPED
) {
1841 all_stopped
= false;
1845 *status_reg
&= 0xffffffff00000000ULL
;
1847 /* Reject set arch order, with czam we're always in z/Arch mode. */
1848 *status_reg
|= (all_stopped
? SIGP_STAT_INVALID_PARAMETER
:
1849 SIGP_STAT_INCORRECT_STATE
);
1850 return SIGP_CC_STATUS_STORED
;
1853 static int handle_sigp(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1855 CPUS390XState
*env
= &cpu
->env
;
1856 const uint8_t r1
= ipa1
>> 4;
1857 const uint8_t r3
= ipa1
& 0x0f;
1860 uint64_t *status_reg
;
1862 S390CPU
*dst_cpu
= NULL
;
1864 cpu_synchronize_state(CPU(cpu
));
1866 /* get order code */
1867 order
= decode_basedisp_rs(env
, run
->s390_sieic
.ipb
, NULL
)
1869 status_reg
= &env
->regs
[r1
];
1870 param
= (r1
% 2) ? env
->regs
[r1
] : env
->regs
[r1
+ 1];
1872 if (qemu_mutex_trylock(&qemu_sigp_mutex
)) {
1879 ret
= sigp_set_architecture(cpu
, param
, status_reg
);
1882 /* all other sigp orders target a single vcpu */
1883 dst_cpu
= s390_cpu_addr2state(env
->regs
[r3
]);
1884 ret
= handle_sigp_single_dst(dst_cpu
, order
, param
, status_reg
);
1886 qemu_mutex_unlock(&qemu_sigp_mutex
);
1889 trace_kvm_sigp_finished(order
, CPU(cpu
)->cpu_index
,
1890 dst_cpu
? CPU(dst_cpu
)->cpu_index
: -1, ret
);
1900 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1902 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1903 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1906 DPRINTF("handle_instruction 0x%x 0x%x\n",
1907 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1910 r
= handle_b2(cpu
, run
, ipa1
);
1913 r
= handle_b9(cpu
, run
, ipa1
);
1916 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1919 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1922 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1925 r
= handle_sigp(cpu
, run
, ipa1
);
1931 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1937 static bool is_special_wait_psw(CPUState
*cs
)
1939 /* signal quiesce */
1940 return cs
->kvm_run
->psw_addr
== 0xfffUL
;
1943 static void unmanageable_intercept(S390CPU
*cpu
, const char *str
, int pswoffset
)
1945 CPUState
*cs
= CPU(cpu
);
1947 error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1948 str
, cs
->cpu_index
, ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
),
1949 ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
+ 8));
1951 qemu_system_guest_panicked(NULL
);
1954 /* try to detect pgm check loops */
1955 static int handle_oper_loop(S390CPU
*cpu
, struct kvm_run
*run
)
1957 CPUState
*cs
= CPU(cpu
);
1960 cpu_synchronize_state(cs
);
1961 newpsw
.mask
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1962 offsetof(LowCore
, program_new_psw
));
1963 newpsw
.addr
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1964 offsetof(LowCore
, program_new_psw
) + 8);
1965 oldpsw
.mask
= run
->psw_mask
;
1966 oldpsw
.addr
= run
->psw_addr
;
1968 * Avoid endless loops of operation exceptions, if the pgm new
1969 * PSW will cause a new operation exception.
1970 * The heuristic checks if the pgm new psw is within 6 bytes before
1971 * the faulting psw address (with same DAT, AS settings) and the
1972 * new psw is not a wait psw and the fault was not triggered by
1973 * problem state. In that case go into crashed state.
1976 if (oldpsw
.addr
- newpsw
.addr
<= 6 &&
1977 !(newpsw
.mask
& PSW_MASK_WAIT
) &&
1978 !(oldpsw
.mask
& PSW_MASK_PSTATE
) &&
1979 (newpsw
.mask
& PSW_MASK_ASC
) == (oldpsw
.mask
& PSW_MASK_ASC
) &&
1980 (newpsw
.mask
& PSW_MASK_DAT
) == (oldpsw
.mask
& PSW_MASK_DAT
)) {
1981 unmanageable_intercept(cpu
, "operation exception loop",
1982 offsetof(LowCore
, program_new_psw
));
1988 static int handle_intercept(S390CPU
*cpu
)
1990 CPUState
*cs
= CPU(cpu
);
1991 struct kvm_run
*run
= cs
->kvm_run
;
1992 int icpt_code
= run
->s390_sieic
.icptcode
;
1995 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1996 (long)cs
->kvm_run
->psw_addr
);
1997 switch (icpt_code
) {
1998 case ICPT_INSTRUCTION
:
1999 r
= handle_instruction(cpu
, run
);
2002 unmanageable_intercept(cpu
, "program interrupt",
2003 offsetof(LowCore
, program_new_psw
));
2007 unmanageable_intercept(cpu
, "external interrupt",
2008 offsetof(LowCore
, external_new_psw
));
2012 /* disabled wait, since enabled wait is handled in kernel */
2013 cpu_synchronize_state(cs
);
2014 if (s390_cpu_halt(cpu
) == 0) {
2015 if (is_special_wait_psw(cs
)) {
2016 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN
);
2018 qemu_system_guest_panicked(NULL
);
2024 if (s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
) == 0) {
2025 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN
);
2027 if (cpu
->env
.sigp_order
== SIGP_STOP_STORE_STATUS
) {
2028 kvm_s390_store_status(cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
,
2031 cpu
->env
.sigp_order
= 0;
2035 /* check for break points */
2036 r
= handle_sw_breakpoint(cpu
, run
);
2038 /* Then check for potential pgm check loops */
2039 r
= handle_oper_loop(cpu
, run
);
2041 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
2045 case ICPT_SOFT_INTERCEPT
:
2046 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
2050 fprintf(stderr
, "KVM unimplemented icpt IO\n");
2054 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
2062 static int handle_tsch(S390CPU
*cpu
)
2064 CPUState
*cs
= CPU(cpu
);
2065 struct kvm_run
*run
= cs
->kvm_run
;
2068 cpu_synchronize_state(cs
);
2070 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
);
2074 * If an I/O interrupt had been dequeued, we have to reinject it.
2076 if (run
->s390_tsch
.dequeued
) {
2077 kvm_s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
2078 run
->s390_tsch
.subchannel_nr
,
2079 run
->s390_tsch
.io_int_parm
,
2080 run
->s390_tsch
.io_int_word
);
2087 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
2089 struct sysib_322 sysib
;
2092 if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
2095 /* Shift the stack of Extended Names to prepare for our own data */
2096 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
2097 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
2098 /* First virt level, that doesn't provide Ext Names delimits stack. It is
2099 * assumed it's not capable of managing Extended Names for lower levels.
2101 for (del
= 1; del
< sysib
.count
; del
++) {
2102 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
2106 if (del
< sysib
.count
) {
2107 memset(sysib
.ext_names
[del
], 0,
2108 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
2110 /* Insert short machine name in EBCDIC, padded with blanks */
2112 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
2113 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
2114 strlen(qemu_name
)));
2116 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
2117 memset(sysib
.ext_names
[0], 0, sizeof(sysib
.ext_names
[0]));
2118 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
2119 * considered by s390 as not capable of providing any Extended Name.
2120 * Therefore if no name was specified on qemu invocation, we go with the
2121 * same "KVMguest" default, which KVM has filled into short name field.
2124 strncpy((char *)sysib
.ext_names
[0], qemu_name
,
2125 sizeof(sysib
.ext_names
[0]));
2127 strcpy((char *)sysib
.ext_names
[0], "KVMguest");
2130 memcpy(sysib
.vm
[0].uuid
, &qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
2132 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
2135 static int handle_stsi(S390CPU
*cpu
)
2137 CPUState
*cs
= CPU(cpu
);
2138 struct kvm_run
*run
= cs
->kvm_run
;
2140 switch (run
->s390_stsi
.fc
) {
2142 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
2145 /* Only sysib 3.2.2 needs post-handling for now. */
2146 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
2153 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
2155 CPUState
*cs
= CPU(cpu
);
2156 struct kvm_run
*run
= cs
->kvm_run
;
2159 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
2161 switch (arch_info
->type
) {
2162 case KVM_HW_WP_WRITE
:
2163 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
2164 cs
->watchpoint_hit
= &hw_watchpoint
;
2165 hw_watchpoint
.vaddr
= arch_info
->addr
;
2166 hw_watchpoint
.flags
= BP_MEM_WRITE
;
2171 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
2175 case KVM_SINGLESTEP
:
2176 if (cs
->singlestep_enabled
) {
2187 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
2189 S390CPU
*cpu
= S390_CPU(cs
);
2192 qemu_mutex_lock_iothread();
2194 switch (run
->exit_reason
) {
2195 case KVM_EXIT_S390_SIEIC
:
2196 ret
= handle_intercept(cpu
);
2198 case KVM_EXIT_S390_RESET
:
2199 s390_reipl_request();
2201 case KVM_EXIT_S390_TSCH
:
2202 ret
= handle_tsch(cpu
);
2204 case KVM_EXIT_S390_STSI
:
2205 ret
= handle_stsi(cpu
);
2207 case KVM_EXIT_DEBUG
:
2208 ret
= kvm_arch_handle_debug_exit(cpu
);
2211 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
2214 qemu_mutex_unlock_iothread();
2217 ret
= EXCP_INTERRUPT
;
2222 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
2227 void kvm_s390_io_interrupt(uint16_t subchannel_id
,
2228 uint16_t subchannel_nr
, uint32_t io_int_parm
,
2229 uint32_t io_int_word
)
2231 struct kvm_s390_irq irq
= {
2232 .u
.io
.subchannel_id
= subchannel_id
,
2233 .u
.io
.subchannel_nr
= subchannel_nr
,
2234 .u
.io
.io_int_parm
= io_int_parm
,
2235 .u
.io
.io_int_word
= io_int_word
,
2238 if (io_int_word
& IO_INT_WORD_AI
) {
2239 irq
.type
= KVM_S390_INT_IO(1, 0, 0, 0);
2241 irq
.type
= KVM_S390_INT_IO(0, (subchannel_id
& 0xff00) >> 8,
2242 (subchannel_id
& 0x0006),
2245 kvm_s390_floating_interrupt(&irq
);
2248 static uint64_t build_channel_report_mcic(void)
2252 /* subclass: indicate channel report pending */
2254 /* subclass modifiers: none */
2255 /* storage errors: none */
2256 /* validity bits: no damage */
2257 MCIC_VB_WP
| MCIC_VB_MS
| MCIC_VB_PM
| MCIC_VB_IA
| MCIC_VB_FP
|
2258 MCIC_VB_GR
| MCIC_VB_CR
| MCIC_VB_ST
| MCIC_VB_AR
| MCIC_VB_PR
|
2259 MCIC_VB_FC
| MCIC_VB_CT
| MCIC_VB_CC
;
2260 if (s390_has_feat(S390_FEAT_VECTOR
)) {
2263 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE
)) {
2269 void kvm_s390_crw_mchk(void)
2271 struct kvm_s390_irq irq
= {
2272 .type
= KVM_S390_MCHK
,
2273 .u
.mchk
.cr14
= 1 << 28,
2274 .u
.mchk
.mcic
= build_channel_report_mcic(),
2276 kvm_s390_floating_interrupt(&irq
);
2279 void kvm_s390_enable_css_support(S390CPU
*cpu
)
2283 /* Activate host kernel channel subsystem support. */
2284 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
2288 void kvm_arch_init_irq_routing(KVMState
*s
)
2291 * Note that while irqchip capabilities generally imply that cpustates
2292 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2293 * have to override the common code kvm_halt_in_kernel_allowed setting.
2295 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
2296 kvm_gsi_routing_allowed
= true;
2297 kvm_halt_in_kernel_allowed
= false;
2301 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
2302 int vq
, bool assign
)
2304 struct kvm_ioeventfd kick
= {
2305 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
2306 KVM_IOEVENTFD_FLAG_DATAMATCH
,
2307 .fd
= event_notifier_get_fd(notifier
),
2312 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
2316 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
2318 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
2321 int kvm_s390_get_memslot_count(void)
2323 return kvm_check_extension(kvm_state
, KVM_CAP_NR_MEMSLOTS
);
2326 int kvm_s390_get_ri(void)
2331 int kvm_s390_get_gs(void)
2336 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
2338 struct kvm_mp_state mp_state
= {};
2341 /* the kvm part might not have been initialized yet */
2342 if (CPU(cpu
)->kvm_state
== NULL
) {
2346 switch (cpu_state
) {
2347 case CPU_STATE_STOPPED
:
2348 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
2350 case CPU_STATE_CHECK_STOP
:
2351 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
2353 case CPU_STATE_OPERATING
:
2354 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
2356 case CPU_STATE_LOAD
:
2357 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
2360 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2365 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
2367 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
2374 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
2376 struct kvm_s390_irq_state irq_state
;
2377 CPUState
*cs
= CPU(cpu
);
2380 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2384 irq_state
.buf
= (uint64_t) cpu
->irqstate
;
2385 irq_state
.len
= VCPU_IRQ_BUF_SIZE
;
2387 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
2389 cpu
->irqstate_saved_size
= 0;
2390 error_report("Migration of interrupt state failed");
2394 cpu
->irqstate_saved_size
= bytes
;
2397 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
2399 CPUState
*cs
= CPU(cpu
);
2400 struct kvm_s390_irq_state irq_state
;
2403 if (cpu
->irqstate_saved_size
== 0) {
2407 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2411 irq_state
.buf
= (uint64_t) cpu
->irqstate
;
2412 irq_state
.len
= cpu
->irqstate_saved_size
;
2414 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
2416 error_report("Setting interrupt state failed %d", r
);
2421 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2422 uint64_t address
, uint32_t data
, PCIDevice
*dev
)
2424 S390PCIBusDevice
*pbdev
;
2425 uint32_t idx
= data
>> ZPCI_MSI_VEC_BITS
;
2426 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2428 pbdev
= s390_pci_find_dev_by_idx(s390_get_phb(), idx
);
2430 DPRINTF("add_msi_route no dev\n");
2434 pbdev
->routes
.adapter
.ind_offset
= vec
;
2436 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2438 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2439 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2440 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2441 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
;
2442 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;
2446 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry
*route
,
2447 int vector
, PCIDevice
*dev
)
2452 int kvm_arch_release_virq_post(int virq
)
2457 int kvm_arch_msi_data_to_gsi(uint32_t data
)
2462 static int query_cpu_subfunc(S390FeatBitmap features
)
2464 struct kvm_s390_vm_cpu_subfunc prop
;
2465 struct kvm_device_attr attr
= {
2466 .group
= KVM_S390_VM_CPU_MODEL
,
2467 .attr
= KVM_S390_VM_CPU_MACHINE_SUBFUNC
,
2468 .addr
= (uint64_t) &prop
,
2472 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2478 * We're going to add all subfunctions now, if the corresponding feature
2479 * is available that unlocks the query functions.
2481 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2482 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2483 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2485 if (test_bit(S390_FEAT_MSA
, features
)) {
2486 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2487 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2488 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2489 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2490 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2492 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2493 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2495 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2496 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2497 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2498 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2499 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2501 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2502 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2504 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2505 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2510 static int configure_cpu_subfunc(const S390FeatBitmap features
)
2512 struct kvm_s390_vm_cpu_subfunc prop
= {};
2513 struct kvm_device_attr attr
= {
2514 .group
= KVM_S390_VM_CPU_MODEL
,
2515 .attr
= KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
,
2516 .addr
= (uint64_t) &prop
,
2519 if (!kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2520 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
)) {
2521 /* hardware support might be missing, IBC will handle most of this */
2525 s390_fill_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2526 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2527 s390_fill_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2529 if (test_bit(S390_FEAT_MSA
, features
)) {
2530 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2531 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2532 s390_fill_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2533 s390_fill_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2534 s390_fill_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2536 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2537 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2539 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2540 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2541 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2542 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2543 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2545 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2546 s390_fill_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2548 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2549 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2551 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2554 static int kvm_to_feat
[][2] = {
2555 { KVM_S390_VM_CPU_FEAT_ESOP
, S390_FEAT_ESOP
},
2556 { KVM_S390_VM_CPU_FEAT_SIEF2
, S390_FEAT_SIE_F2
},
2557 { KVM_S390_VM_CPU_FEAT_64BSCAO
, S390_FEAT_SIE_64BSCAO
},
2558 { KVM_S390_VM_CPU_FEAT_SIIF
, S390_FEAT_SIE_SIIF
},
2559 { KVM_S390_VM_CPU_FEAT_GPERE
, S390_FEAT_SIE_GPERE
},
2560 { KVM_S390_VM_CPU_FEAT_GSLS
, S390_FEAT_SIE_GSLS
},
2561 { KVM_S390_VM_CPU_FEAT_IB
, S390_FEAT_SIE_IB
},
2562 { KVM_S390_VM_CPU_FEAT_CEI
, S390_FEAT_SIE_CEI
},
2563 { KVM_S390_VM_CPU_FEAT_IBS
, S390_FEAT_SIE_IBS
},
2564 { KVM_S390_VM_CPU_FEAT_SKEY
, S390_FEAT_SIE_SKEY
},
2565 { KVM_S390_VM_CPU_FEAT_CMMA
, S390_FEAT_SIE_CMMA
},
2566 { KVM_S390_VM_CPU_FEAT_PFMFI
, S390_FEAT_SIE_PFMFI
},
2567 { KVM_S390_VM_CPU_FEAT_SIGPIF
, S390_FEAT_SIE_SIGPIF
},
2568 { KVM_S390_VM_CPU_FEAT_KSS
, S390_FEAT_SIE_KSS
},
2571 static int query_cpu_feat(S390FeatBitmap features
)
2573 struct kvm_s390_vm_cpu_feat prop
;
2574 struct kvm_device_attr attr
= {
2575 .group
= KVM_S390_VM_CPU_MODEL
,
2576 .attr
= KVM_S390_VM_CPU_MACHINE_FEAT
,
2577 .addr
= (uint64_t) &prop
,
2582 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2587 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2588 if (test_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
)) {
2589 set_bit(kvm_to_feat
[i
][1], features
);
2595 static int configure_cpu_feat(const S390FeatBitmap features
)
2597 struct kvm_s390_vm_cpu_feat prop
= {};
2598 struct kvm_device_attr attr
= {
2599 .group
= KVM_S390_VM_CPU_MODEL
,
2600 .attr
= KVM_S390_VM_CPU_PROCESSOR_FEAT
,
2601 .addr
= (uint64_t) &prop
,
2605 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2606 if (test_bit(kvm_to_feat
[i
][1], features
)) {
2607 set_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
);
2610 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2613 bool kvm_s390_cpu_models_supported(void)
2615 if (!cpu_model_allowed()) {
2616 /* compatibility machines interfere with the cpu model */
2619 return kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2620 KVM_S390_VM_CPU_MACHINE
) &&
2621 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2622 KVM_S390_VM_CPU_PROCESSOR
) &&
2623 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2624 KVM_S390_VM_CPU_MACHINE_FEAT
) &&
2625 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2626 KVM_S390_VM_CPU_PROCESSOR_FEAT
) &&
2627 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2628 KVM_S390_VM_CPU_MACHINE_SUBFUNC
);
2631 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
)
2633 struct kvm_s390_vm_cpu_machine prop
= {};
2634 struct kvm_device_attr attr
= {
2635 .group
= KVM_S390_VM_CPU_MODEL
,
2636 .attr
= KVM_S390_VM_CPU_MACHINE
,
2637 .addr
= (uint64_t) &prop
,
2639 uint16_t unblocked_ibc
= 0, cpu_type
= 0;
2642 memset(model
, 0, sizeof(*model
));
2644 if (!kvm_s390_cpu_models_supported()) {
2645 error_setg(errp
, "KVM doesn't support CPU models");
2649 /* query the basic cpu model properties */
2650 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2652 error_setg(errp
, "KVM: Error querying host CPU model: %d", rc
);
2656 cpu_type
= cpuid_type(prop
.cpuid
);
2657 if (has_ibc(prop
.ibc
)) {
2658 model
->lowest_ibc
= lowest_ibc(prop
.ibc
);
2659 unblocked_ibc
= unblocked_ibc(prop
.ibc
);
2661 model
->cpu_id
= cpuid_id(prop
.cpuid
);
2662 model
->cpu_id_format
= cpuid_format(prop
.cpuid
);
2663 model
->cpu_ver
= 0xff;
2665 /* get supported cpu features indicated via STFL(E) */
2666 s390_add_from_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2667 (uint8_t *) prop
.fac_mask
);
2668 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2669 if (test_bit(S390_FEAT_STFLE
, model
->features
)) {
2670 set_bit(S390_FEAT_DAT_ENH_2
, model
->features
);
2672 /* get supported cpu features indicated e.g. via SCLP */
2673 rc
= query_cpu_feat(model
->features
);
2675 error_setg(errp
, "KVM: Error querying CPU features: %d", rc
);
2678 /* get supported cpu subfunctions indicated via query / test bit */
2679 rc
= query_cpu_subfunc(model
->features
);
2681 error_setg(errp
, "KVM: Error querying CPU subfunctions: %d", rc
);
2685 /* with cpu model support, CMM is only indicated if really available */
2686 if (kvm_s390_cmma_available()) {
2687 set_bit(S390_FEAT_CMM
, model
->features
);
2689 /* no cmm -> no cmm nt */
2690 clear_bit(S390_FEAT_CMM_NT
, model
->features
);
2693 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2694 if (pci_available
) {
2695 set_bit(S390_FEAT_ZPCI
, model
->features
);
2697 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION
, model
->features
);
2699 if (s390_known_cpu_type(cpu_type
)) {
2700 /* we want the exact model, even if some features are missing */
2701 model
->def
= s390_find_cpu_def(cpu_type
, ibc_gen(unblocked_ibc
),
2702 ibc_ec_ga(unblocked_ibc
), NULL
);
2704 /* model unknown, e.g. too new - search using features */
2705 model
->def
= s390_find_cpu_def(0, ibc_gen(unblocked_ibc
),
2706 ibc_ec_ga(unblocked_ibc
),
2710 error_setg(errp
, "KVM: host CPU model could not be identified");
2713 /* strip of features that are not part of the maximum model */
2714 bitmap_and(model
->features
, model
->features
, model
->def
->full_feat
,
2718 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
2720 struct kvm_s390_vm_cpu_processor prop
= {
2723 struct kvm_device_attr attr
= {
2724 .group
= KVM_S390_VM_CPU_MODEL
,
2725 .attr
= KVM_S390_VM_CPU_PROCESSOR
,
2726 .addr
= (uint64_t) &prop
,
2731 /* compatibility handling if cpu models are disabled */
2732 if (kvm_s390_cmma_available()) {
2733 kvm_s390_enable_cmma();
2737 if (!kvm_s390_cpu_models_supported()) {
2738 error_setg(errp
, "KVM doesn't support CPU models");
2741 prop
.cpuid
= s390_cpuid_from_cpu_model(model
);
2742 prop
.ibc
= s390_ibc_from_cpu_model(model
);
2743 /* configure cpu features indicated via STFL(e) */
2744 s390_fill_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2745 (uint8_t *) prop
.fac_list
);
2746 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2748 error_setg(errp
, "KVM: Error configuring the CPU model: %d", rc
);
2751 /* configure cpu features indicated e.g. via SCLP */
2752 rc
= configure_cpu_feat(model
->features
);
2754 error_setg(errp
, "KVM: Error configuring CPU features: %d", rc
);
2757 /* configure cpu subfunctions indicated via query / test bit */
2758 rc
= configure_cpu_subfunc(model
->features
);
2760 error_setg(errp
, "KVM: Error configuring CPU subfunctions: %d", rc
);
2763 /* enable CMM via CMMA */
2764 if (test_bit(S390_FEAT_CMM
, model
->features
)) {
2765 kvm_s390_enable_cmma();