2 * QEMU S390x KVM implementation
4 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
5 * Copyright IBM Corp. 2012
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/osdep.h"
22 #include <sys/ioctl.h>
24 #include <linux/kvm.h>
25 #include <asm/ptrace.h>
27 #include "qemu-common.h"
30 #include "kvm_s390x.h"
31 #include "qapi/error.h"
32 #include "qemu/error-report.h"
33 #include "qemu/timer.h"
34 #include "qemu/units.h"
35 #include "qemu/mmap-alloc.h"
37 #include "sysemu/sysemu.h"
38 #include "sysemu/hw_accel.h"
40 #include "sysemu/device_tree.h"
41 #include "exec/gdbstub.h"
42 #include "exec/ram_addr.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"
50 #include "hw/s390x/s390-virtio-hcall.h"
56 #define DPRINTF(fmt, ...) do { \
58 fprintf(stderr, fmt, ## __VA_ARGS__); \
62 #define kvm_vm_check_mem_attr(s, attr) \
63 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
65 #define IPA0_DIAG 0x8300
66 #define IPA0_SIGP 0xae00
67 #define IPA0_B2 0xb200
68 #define IPA0_B9 0xb900
69 #define IPA0_EB 0xeb00
70 #define IPA0_E3 0xe300
72 #define PRIV_B2_SCLP_CALL 0x20
73 #define PRIV_B2_CSCH 0x30
74 #define PRIV_B2_HSCH 0x31
75 #define PRIV_B2_MSCH 0x32
76 #define PRIV_B2_SSCH 0x33
77 #define PRIV_B2_STSCH 0x34
78 #define PRIV_B2_TSCH 0x35
79 #define PRIV_B2_TPI 0x36
80 #define PRIV_B2_SAL 0x37
81 #define PRIV_B2_RSCH 0x38
82 #define PRIV_B2_STCRW 0x39
83 #define PRIV_B2_STCPS 0x3a
84 #define PRIV_B2_RCHP 0x3b
85 #define PRIV_B2_SCHM 0x3c
86 #define PRIV_B2_CHSC 0x5f
87 #define PRIV_B2_SIGA 0x74
88 #define PRIV_B2_XSCH 0x76
90 #define PRIV_EB_SQBS 0x8a
91 #define PRIV_EB_PCISTB 0xd0
92 #define PRIV_EB_SIC 0xd1
94 #define PRIV_B9_EQBS 0x9c
95 #define PRIV_B9_CLP 0xa0
96 #define PRIV_B9_PCISTG 0xd0
97 #define PRIV_B9_PCILG 0xd2
98 #define PRIV_B9_RPCIT 0xd3
100 #define PRIV_E3_MPCIFC 0xd0
101 #define PRIV_E3_STPCIFC 0xd4
103 #define DIAG_TIMEREVENT 0x288
104 #define DIAG_IPL 0x308
105 #define DIAG_KVM_HYPERCALL 0x500
106 #define DIAG_KVM_BREAKPOINT 0x501
108 #define ICPT_INSTRUCTION 0x04
109 #define ICPT_PROGRAM 0x08
110 #define ICPT_EXT_INT 0x14
111 #define ICPT_WAITPSW 0x1c
112 #define ICPT_SOFT_INTERCEPT 0x24
113 #define ICPT_CPU_STOP 0x28
114 #define ICPT_OPEREXC 0x2c
117 #define NR_LOCAL_IRQS 32
119 * Needs to be big enough to contain max_cpus emergency signals
120 * and in addition NR_LOCAL_IRQS interrupts
122 #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
123 (max_cpus + NR_LOCAL_IRQS))
125 static CPUWatchpoint hw_watchpoint
;
127 * We don't use a list because this structure is also used to transmit the
128 * hardware breakpoints to the kernel.
130 static struct kvm_hw_breakpoint
*hw_breakpoints
;
131 static int nb_hw_breakpoints
;
133 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
137 static int cap_sync_regs
;
138 static int cap_async_pf
;
139 static int cap_mem_op
;
140 static int cap_s390_irq
;
143 static int cap_hpage_1m
;
145 static int active_cmma
;
147 static void *legacy_s390_alloc(size_t size
, uint64_t *align
, bool shared
);
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 warn_report("CMM will not be enabled because it is not "
227 "compatible with huge memory backings.");
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 void kvm_s390_set_max_pagesize(uint64_t pagesize
, Error
**errp
)
288 if (pagesize
== 4 * KiB
) {
292 if (!hpage_1m_allowed()) {
293 error_setg(errp
, "This QEMU machine does not support huge page "
298 if (pagesize
!= 1 * MiB
) {
299 error_setg(errp
, "Memory backing with 2G pages was specified, "
300 "but KVM does not support this memory backing");
304 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_HPAGE_1M
, 0)) {
305 error_setg(errp
, "Memory backing with 1M pages was specified, "
306 "but KVM does not support this memory backing");
313 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
315 MachineClass
*mc
= MACHINE_GET_CLASS(ms
);
317 mc
->default_cpu_type
= S390_CPU_TYPE_NAME("host");
318 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
319 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
320 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
321 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
323 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
324 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
325 phys_mem_set_alloc(legacy_s390_alloc
);
328 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
329 kvm_vm_enable_cap(s
, KVM_CAP_S390_VECTOR_REGISTERS
, 0);
330 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
332 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_RI
, 0) == 0) {
336 if (cpu_model_allowed()) {
337 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_GS
, 0) == 0) {
343 * The migration interface for ais was introduced with kernel 4.13
344 * but the capability itself had been active since 4.12. As migration
345 * support is considered necessary let's disable ais in the 2.10
348 /* kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0); */
353 int kvm_arch_irqchip_create(MachineState
*ms
, KVMState
*s
)
358 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
360 return cpu
->cpu_index
;
363 int kvm_arch_init_vcpu(CPUState
*cs
)
365 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
366 S390CPU
*cpu
= S390_CPU(cs
);
367 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
368 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus
));
372 int kvm_arch_destroy_vcpu(CPUState
*cs
)
374 S390CPU
*cpu
= S390_CPU(cs
);
376 g_free(cpu
->irqstate
);
377 cpu
->irqstate
= NULL
;
382 void kvm_s390_reset_vcpu(S390CPU
*cpu
)
384 CPUState
*cs
= CPU(cpu
);
386 /* The initial reset call is needed here to reset in-kernel
387 * vcpu data that we can't access directly from QEMU
388 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
389 * Before this ioctl cpu_synchronize_state() is called in common kvm
391 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
)) {
392 error_report("Initial CPU reset failed on CPU %i", cs
->cpu_index
);
396 static int can_sync_regs(CPUState
*cs
, int regs
)
398 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
401 int kvm_arch_put_registers(CPUState
*cs
, int level
)
403 S390CPU
*cpu
= S390_CPU(cs
);
404 CPUS390XState
*env
= &cpu
->env
;
405 struct kvm_sregs sregs
;
406 struct kvm_regs regs
;
407 struct kvm_fpu fpu
= {};
411 /* always save the PSW and the GPRS*/
412 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
413 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
415 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
416 for (i
= 0; i
< 16; i
++) {
417 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
418 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
421 for (i
= 0; i
< 16; i
++) {
422 regs
.gprs
[i
] = env
->regs
[i
];
424 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
430 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
431 for (i
= 0; i
< 32; i
++) {
432 cs
->kvm_run
->s
.regs
.vrs
[i
][0] = env
->vregs
[i
][0];
433 cs
->kvm_run
->s
.regs
.vrs
[i
][1] = env
->vregs
[i
][1];
435 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
436 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_VRS
;
437 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
438 for (i
= 0; i
< 16; i
++) {
439 cs
->kvm_run
->s
.regs
.fprs
[i
] = *get_freg(env
, i
);
441 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
442 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_FPRS
;
445 for (i
= 0; i
< 16; i
++) {
446 fpu
.fprs
[i
] = *get_freg(env
, i
);
450 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
456 /* Do we need to save more than that? */
457 if (level
== KVM_PUT_RUNTIME_STATE
) {
461 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
462 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
463 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
464 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
465 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
466 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
467 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
470 * These ONE_REGS are not protected by a capability. As they are only
471 * necessary for migration we just trace a possible error, but don't
472 * return with an error return code.
474 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
475 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
476 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
477 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
478 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
481 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
482 memcpy(cs
->kvm_run
->s
.regs
.riccb
, env
->riccb
, 64);
483 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_RICCB
;
486 /* pfault parameters */
487 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
488 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
489 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
490 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
491 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
492 } else if (cap_async_pf
) {
493 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
497 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
501 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
507 /* access registers and control registers*/
508 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
509 for (i
= 0; i
< 16; i
++) {
510 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
511 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
513 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
514 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
516 for (i
= 0; i
< 16; i
++) {
517 sregs
.acrs
[i
] = env
->aregs
[i
];
518 sregs
.crs
[i
] = env
->cregs
[i
];
520 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
526 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
527 memcpy(cs
->kvm_run
->s
.regs
.gscb
, env
->gscb
, 32);
528 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GSCB
;
531 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
532 cs
->kvm_run
->s
.regs
.bpbc
= env
->bpbc
;
533 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_BPBC
;
536 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
537 cs
->kvm_run
->s
.regs
.etoken
= env
->etoken
;
538 cs
->kvm_run
->s
.regs
.etoken_extension
= env
->etoken_extension
;
539 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ETOKEN
;
542 /* Finally the prefix */
543 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
544 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
545 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
547 /* prefix is only supported via sync regs */
552 int kvm_arch_get_registers(CPUState
*cs
)
554 S390CPU
*cpu
= S390_CPU(cs
);
555 CPUS390XState
*env
= &cpu
->env
;
556 struct kvm_sregs sregs
;
557 struct kvm_regs regs
;
562 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
563 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
566 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
567 for (i
= 0; i
< 16; i
++) {
568 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
571 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
575 for (i
= 0; i
< 16; i
++) {
576 env
->regs
[i
] = regs
.gprs
[i
];
580 /* The ACRS and CRS */
581 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
582 for (i
= 0; i
< 16; i
++) {
583 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
584 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
587 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
591 for (i
= 0; i
< 16; i
++) {
592 env
->aregs
[i
] = sregs
.acrs
[i
];
593 env
->cregs
[i
] = sregs
.crs
[i
];
597 /* Floating point and vector registers */
598 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
599 for (i
= 0; i
< 32; i
++) {
600 env
->vregs
[i
][0] = cs
->kvm_run
->s
.regs
.vrs
[i
][0];
601 env
->vregs
[i
][1] = cs
->kvm_run
->s
.regs
.vrs
[i
][1];
603 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
604 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
605 for (i
= 0; i
< 16; i
++) {
606 *get_freg(env
, i
) = cs
->kvm_run
->s
.regs
.fprs
[i
];
608 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
610 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
614 for (i
= 0; i
< 16; i
++) {
615 *get_freg(env
, i
) = fpu
.fprs
[i
];
621 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
622 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
625 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
626 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
627 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
628 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
629 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
630 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
633 * These ONE_REGS are not protected by a capability. As they are only
634 * necessary for migration we just trace a possible error, but don't
635 * return with an error return code.
637 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
638 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
639 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
640 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
641 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
644 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
645 memcpy(env
->riccb
, cs
->kvm_run
->s
.regs
.riccb
, 64);
648 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
649 memcpy(env
->gscb
, cs
->kvm_run
->s
.regs
.gscb
, 32);
652 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
653 env
->bpbc
= cs
->kvm_run
->s
.regs
.bpbc
;
656 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
657 env
->etoken
= cs
->kvm_run
->s
.regs
.etoken
;
658 env
->etoken_extension
= cs
->kvm_run
->s
.regs
.etoken_extension
;
661 /* pfault parameters */
662 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
663 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
664 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
665 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
666 } else if (cap_async_pf
) {
667 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
671 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
675 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
684 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
687 struct kvm_device_attr attr
= {
688 .group
= KVM_S390_VM_TOD
,
689 .attr
= KVM_S390_VM_TOD_LOW
,
690 .addr
= (uint64_t)tod_low
,
693 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
698 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
699 attr
.addr
= (uint64_t)tod_high
;
700 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
703 int kvm_s390_get_clock_ext(uint8_t *tod_high
, uint64_t *tod_low
)
706 struct kvm_s390_vm_tod_clock gtod
;
707 struct kvm_device_attr attr
= {
708 .group
= KVM_S390_VM_TOD
,
709 .attr
= KVM_S390_VM_TOD_EXT
,
710 .addr
= (uint64_t)>od
,
713 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
714 *tod_high
= gtod
.epoch_idx
;
720 int kvm_s390_set_clock(uint8_t tod_high
, uint64_t tod_low
)
723 struct kvm_device_attr attr
= {
724 .group
= KVM_S390_VM_TOD
,
725 .attr
= KVM_S390_VM_TOD_LOW
,
726 .addr
= (uint64_t)&tod_low
,
729 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
734 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
735 attr
.addr
= (uint64_t)&tod_high
;
736 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
739 int kvm_s390_set_clock_ext(uint8_t tod_high
, uint64_t tod_low
)
741 struct kvm_s390_vm_tod_clock gtod
= {
742 .epoch_idx
= tod_high
,
745 struct kvm_device_attr attr
= {
746 .group
= KVM_S390_VM_TOD
,
747 .attr
= KVM_S390_VM_TOD_EXT
,
748 .addr
= (uint64_t)>od
,
751 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
756 * @addr: the logical start address in guest memory
757 * @ar: the access register number
758 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
759 * @len: length that should be transferred
760 * @is_write: true = write, false = read
761 * Returns: 0 on success, non-zero if an exception or error occurred
763 * Use KVM ioctl to read/write from/to guest memory. An access exception
764 * is injected into the vCPU in case of translation errors.
766 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
767 int len
, bool is_write
)
769 struct kvm_s390_mem_op mem_op
= {
771 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
773 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
774 : KVM_S390_MEMOP_LOGICAL_READ
,
775 .buf
= (uint64_t)hostbuf
,
784 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
787 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
789 warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret
));
795 * Legacy layout for s390:
796 * Older S390 KVM requires the topmost vma of the RAM to be
797 * smaller than an system defined value, which is at least 256GB.
798 * Larger systems have larger values. We put the guest between
799 * the end of data segment (system break) and this value. We
800 * use 32GB as a base to have enough room for the system break
801 * to grow. We also have to use MAP parameters that avoid
802 * read-only mapping of guest pages.
804 static void *legacy_s390_alloc(size_t size
, uint64_t *align
, bool shared
)
809 /* we only support one allocation, which is enough for initial ram */
813 mem
= mmap((void *) 0x800000000ULL
, size
,
814 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
815 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
816 if (mem
== MAP_FAILED
) {
820 *align
= QEMU_VMALLOC_ALIGN
;
825 static uint8_t const *sw_bp_inst
;
826 static uint8_t sw_bp_ilen
;
828 static void determine_sw_breakpoint_instr(void)
830 /* DIAG 501 is used for sw breakpoints with old kernels */
831 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
832 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
833 static const uint8_t instr_0x0000
[] = {0x00, 0x00};
838 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_USER_INSTR0
, 0)) {
839 sw_bp_inst
= diag_501
;
840 sw_bp_ilen
= sizeof(diag_501
);
841 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
843 sw_bp_inst
= instr_0x0000
;
844 sw_bp_ilen
= sizeof(instr_0x0000
);
845 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
849 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
851 determine_sw_breakpoint_instr();
853 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
855 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)sw_bp_inst
, sw_bp_ilen
, 1)) {
861 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
865 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sw_bp_ilen
, 0)) {
867 } else if (memcmp(t
, sw_bp_inst
, sw_bp_ilen
)) {
869 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
877 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
882 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
883 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
884 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
885 return &hw_breakpoints
[n
];
892 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
896 if (find_hw_breakpoint(addr
, len
, type
)) {
900 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
902 if (!hw_breakpoints
) {
903 nb_hw_breakpoints
= 0;
904 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
907 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
910 if (!hw_breakpoints
) {
911 nb_hw_breakpoints
= 0;
915 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
916 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
917 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
924 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
925 target_ulong len
, int type
)
928 case GDB_BREAKPOINT_HW
:
931 case GDB_WATCHPOINT_WRITE
:
935 type
= KVM_HW_WP_WRITE
;
940 return insert_hw_breakpoint(addr
, len
, type
);
943 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
944 target_ulong len
, int type
)
947 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
954 if (nb_hw_breakpoints
> 0) {
956 * In order to trim the array, move the last element to the position to
957 * be removed - if necessary.
959 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
960 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
962 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
964 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
966 g_free(hw_breakpoints
);
967 hw_breakpoints
= NULL
;
973 void kvm_arch_remove_all_hw_breakpoints(void)
975 nb_hw_breakpoints
= 0;
976 g_free(hw_breakpoints
);
977 hw_breakpoints
= NULL
;
980 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
984 if (nb_hw_breakpoints
> 0) {
985 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
986 dbg
->arch
.hw_bp
= hw_breakpoints
;
988 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
989 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
990 hw_breakpoints
[i
].addr
);
992 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
994 dbg
->arch
.nr_hw_bp
= 0;
995 dbg
->arch
.hw_bp
= NULL
;
999 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
1003 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
1005 return MEMTXATTRS_UNSPECIFIED
;
1008 int kvm_arch_process_async_events(CPUState
*cs
)
1013 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
1014 struct kvm_s390_interrupt
*interrupt
)
1018 interrupt
->type
= irq
->type
;
1019 switch (irq
->type
) {
1020 case KVM_S390_INT_VIRTIO
:
1021 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1023 case KVM_S390_INT_PFAULT_INIT
:
1024 case KVM_S390_INT_PFAULT_DONE
:
1025 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
1027 case KVM_S390_PROGRAM_INT
:
1028 interrupt
->parm
= irq
->u
.pgm
.code
;
1030 case KVM_S390_SIGP_SET_PREFIX
:
1031 interrupt
->parm
= irq
->u
.prefix
.address
;
1033 case KVM_S390_INT_SERVICE
:
1034 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1037 interrupt
->parm
= irq
->u
.mchk
.cr14
;
1038 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
1040 case KVM_S390_INT_EXTERNAL_CALL
:
1041 interrupt
->parm
= irq
->u
.extcall
.code
;
1043 case KVM_S390_INT_EMERGENCY
:
1044 interrupt
->parm
= irq
->u
.emerg
.code
;
1046 case KVM_S390_SIGP_STOP
:
1047 case KVM_S390_RESTART
:
1048 break; /* These types have no parameters */
1049 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1050 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
1051 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
1052 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
1053 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
1062 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
1064 struct kvm_s390_interrupt kvmint
= {};
1067 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1069 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1073 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
1075 fprintf(stderr
, "KVM failed to inject interrupt\n");
1080 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
1082 CPUState
*cs
= CPU(cpu
);
1086 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
1090 error_report("KVM failed to inject interrupt %llx", irq
->type
);
1094 inject_vcpu_irq_legacy(cs
, irq
);
1097 void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq
*irq
)
1099 struct kvm_s390_interrupt kvmint
= {};
1102 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1104 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1108 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
1110 fprintf(stderr
, "KVM failed to inject interrupt\n");
1115 void kvm_s390_program_interrupt(S390CPU
*cpu
, uint16_t code
)
1117 struct kvm_s390_irq irq
= {
1118 .type
= KVM_S390_PROGRAM_INT
,
1121 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
1123 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1126 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
1128 struct kvm_s390_irq irq
= {
1129 .type
= KVM_S390_PROGRAM_INT
,
1131 .u
.pgm
.trans_exc_code
= te_code
,
1132 .u
.pgm
.exc_access_id
= te_code
& 3,
1135 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1138 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
1141 CPUS390XState
*env
= &cpu
->env
;
1146 sccb
= env
->regs
[ipbh0
& 0xf];
1147 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
1149 r
= sclp_service_call(env
, sccb
, code
);
1151 kvm_s390_program_interrupt(cpu
, -r
);
1159 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1161 CPUS390XState
*env
= &cpu
->env
;
1163 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
1167 ioinst_handle_xsch(cpu
, env
->regs
[1], RA_IGNORED
);
1170 ioinst_handle_csch(cpu
, env
->regs
[1], RA_IGNORED
);
1173 ioinst_handle_hsch(cpu
, env
->regs
[1], RA_IGNORED
);
1176 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1179 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1182 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1185 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1188 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1189 fprintf(stderr
, "Spurious tsch intercept\n");
1192 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1195 /* This should have been handled by kvm already. */
1196 fprintf(stderr
, "Spurious tpi intercept\n");
1199 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1200 run
->s390_sieic
.ipb
, RA_IGNORED
);
1203 ioinst_handle_rsch(cpu
, env
->regs
[1], RA_IGNORED
);
1206 ioinst_handle_rchp(cpu
, env
->regs
[1], RA_IGNORED
);
1209 /* We do not provide this instruction, it is suppressed. */
1212 ioinst_handle_sal(cpu
, env
->regs
[1], RA_IGNORED
);
1215 /* Not provided, set CC = 3 for subchannel not operational */
1218 case PRIV_B2_SCLP_CALL
:
1219 rc
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
1223 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1230 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1233 CPUS390XState
*env
= &cpu
->env
;
1234 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1235 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1236 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1237 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1239 if (disp2
& 0x80000) {
1240 disp2
+= 0xfff00000;
1246 return (base2
? env
->regs
[base2
] : 0) +
1247 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1250 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1253 CPUS390XState
*env
= &cpu
->env
;
1254 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1255 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1256 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1258 if (disp2
& 0x80000) {
1259 disp2
+= 0xfff00000;
1265 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1268 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1270 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1272 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1273 return clp_service_call(cpu
, r2
, RA_IGNORED
);
1279 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1281 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1282 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1284 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1285 return pcilg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1291 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1293 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1294 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1296 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1297 return pcistg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1303 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1305 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1309 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1310 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1312 return stpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1318 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1320 CPUS390XState
*env
= &cpu
->env
;
1321 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1322 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1327 mode
= env
->regs
[r1
] & 0xffff;
1328 isc
= (env
->regs
[r3
] >> 27) & 0x7;
1329 r
= css_do_sic(env
, isc
, mode
);
1331 kvm_s390_program_interrupt(cpu
, -r
);
1337 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1339 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1340 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1342 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1343 return rpcit_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1349 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1351 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1352 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1356 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1357 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1359 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
, RA_IGNORED
);
1365 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1367 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1371 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1372 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1374 return mpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1380 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1386 r
= kvm_clp_service_call(cpu
, run
);
1388 case PRIV_B9_PCISTG
:
1389 r
= kvm_pcistg_service_call(cpu
, run
);
1392 r
= kvm_pcilg_service_call(cpu
, run
);
1395 r
= kvm_rpcit_service_call(cpu
, run
);
1398 /* just inject exception */
1403 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1410 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1415 case PRIV_EB_PCISTB
:
1416 r
= kvm_pcistb_service_call(cpu
, run
);
1419 r
= kvm_sic_service_call(cpu
, run
);
1422 /* just inject exception */
1427 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1434 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1439 case PRIV_E3_MPCIFC
:
1440 r
= kvm_mpcifc_service_call(cpu
, run
);
1442 case PRIV_E3_STPCIFC
:
1443 r
= kvm_stpcifc_service_call(cpu
, run
);
1447 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1454 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1456 CPUS390XState
*env
= &cpu
->env
;
1459 ret
= s390_virtio_hypercall(env
);
1460 if (ret
== -EINVAL
) {
1461 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1468 static void kvm_handle_diag_288(S390CPU
*cpu
, struct kvm_run
*run
)
1473 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1474 r3
= run
->s390_sieic
.ipa
& 0x000f;
1475 rc
= handle_diag_288(&cpu
->env
, r1
, r3
);
1477 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1481 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1485 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1486 r3
= run
->s390_sieic
.ipa
& 0x000f;
1487 handle_diag_308(&cpu
->env
, r1
, r3
, RA_IGNORED
);
1490 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1492 CPUS390XState
*env
= &cpu
->env
;
1495 pc
= env
->psw
.addr
- sw_bp_ilen
;
1496 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1504 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1506 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1512 * For any diagnose call we support, bits 48-63 of the resulting
1513 * address specify the function code; the remainder is ignored.
1515 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1516 switch (func_code
) {
1517 case DIAG_TIMEREVENT
:
1518 kvm_handle_diag_288(cpu
, run
);
1521 kvm_handle_diag_308(cpu
, run
);
1523 case DIAG_KVM_HYPERCALL
:
1524 r
= handle_hypercall(cpu
, run
);
1526 case DIAG_KVM_BREAKPOINT
:
1527 r
= handle_sw_breakpoint(cpu
, run
);
1530 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1531 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1538 static int kvm_s390_handle_sigp(S390CPU
*cpu
, uint8_t ipa1
, uint32_t ipb
)
1540 CPUS390XState
*env
= &cpu
->env
;
1541 const uint8_t r1
= ipa1
>> 4;
1542 const uint8_t r3
= ipa1
& 0x0f;
1546 /* get order code */
1547 order
= decode_basedisp_rs(env
, ipb
, NULL
) & SIGP_ORDER_MASK
;
1549 ret
= handle_sigp(env
, order
, r1
, r3
);
1554 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1556 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1557 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1560 DPRINTF("handle_instruction 0x%x 0x%x\n",
1561 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1564 r
= handle_b2(cpu
, run
, ipa1
);
1567 r
= handle_b9(cpu
, run
, ipa1
);
1570 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1573 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1576 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1579 r
= kvm_s390_handle_sigp(cpu
, ipa1
, run
->s390_sieic
.ipb
);
1585 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1591 static void unmanageable_intercept(S390CPU
*cpu
, S390CrashReason reason
,
1594 CPUState
*cs
= CPU(cpu
);
1597 cpu
->env
.crash_reason
= reason
;
1598 qemu_system_guest_panicked(cpu_get_crash_info(cs
));
1601 /* try to detect pgm check loops */
1602 static int handle_oper_loop(S390CPU
*cpu
, struct kvm_run
*run
)
1604 CPUState
*cs
= CPU(cpu
);
1607 newpsw
.mask
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1608 offsetof(LowCore
, program_new_psw
));
1609 newpsw
.addr
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1610 offsetof(LowCore
, program_new_psw
) + 8);
1611 oldpsw
.mask
= run
->psw_mask
;
1612 oldpsw
.addr
= run
->psw_addr
;
1614 * Avoid endless loops of operation exceptions, if the pgm new
1615 * PSW will cause a new operation exception.
1616 * The heuristic checks if the pgm new psw is within 6 bytes before
1617 * the faulting psw address (with same DAT, AS settings) and the
1618 * new psw is not a wait psw and the fault was not triggered by
1619 * problem state. In that case go into crashed state.
1622 if (oldpsw
.addr
- newpsw
.addr
<= 6 &&
1623 !(newpsw
.mask
& PSW_MASK_WAIT
) &&
1624 !(oldpsw
.mask
& PSW_MASK_PSTATE
) &&
1625 (newpsw
.mask
& PSW_MASK_ASC
) == (oldpsw
.mask
& PSW_MASK_ASC
) &&
1626 (newpsw
.mask
& PSW_MASK_DAT
) == (oldpsw
.mask
& PSW_MASK_DAT
)) {
1627 unmanageable_intercept(cpu
, S390_CRASH_REASON_OPINT_LOOP
,
1628 offsetof(LowCore
, program_new_psw
));
1634 static int handle_intercept(S390CPU
*cpu
)
1636 CPUState
*cs
= CPU(cpu
);
1637 struct kvm_run
*run
= cs
->kvm_run
;
1638 int icpt_code
= run
->s390_sieic
.icptcode
;
1641 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1642 (long)cs
->kvm_run
->psw_addr
);
1643 switch (icpt_code
) {
1644 case ICPT_INSTRUCTION
:
1645 r
= handle_instruction(cpu
, run
);
1648 unmanageable_intercept(cpu
, S390_CRASH_REASON_PGMINT_LOOP
,
1649 offsetof(LowCore
, program_new_psw
));
1653 unmanageable_intercept(cpu
, S390_CRASH_REASON_EXTINT_LOOP
,
1654 offsetof(LowCore
, external_new_psw
));
1658 /* disabled wait, since enabled wait is handled in kernel */
1659 s390_handle_wait(cpu
);
1663 do_stop_interrupt(&cpu
->env
);
1667 /* check for break points */
1668 r
= handle_sw_breakpoint(cpu
, run
);
1670 /* Then check for potential pgm check loops */
1671 r
= handle_oper_loop(cpu
, run
);
1673 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1677 case ICPT_SOFT_INTERCEPT
:
1678 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1682 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1686 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1694 static int handle_tsch(S390CPU
*cpu
)
1696 CPUState
*cs
= CPU(cpu
);
1697 struct kvm_run
*run
= cs
->kvm_run
;
1700 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
,
1705 * If an I/O interrupt had been dequeued, we have to reinject it.
1707 if (run
->s390_tsch
.dequeued
) {
1708 s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1709 run
->s390_tsch
.subchannel_nr
,
1710 run
->s390_tsch
.io_int_parm
,
1711 run
->s390_tsch
.io_int_word
);
1718 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
1723 if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
1726 /* Shift the stack of Extended Names to prepare for our own data */
1727 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
1728 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
1729 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1730 * assumed it's not capable of managing Extended Names for lower levels.
1732 for (del
= 1; del
< sysib
.count
; del
++) {
1733 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
1737 if (del
< sysib
.count
) {
1738 memset(sysib
.ext_names
[del
], 0,
1739 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
1741 /* Insert short machine name in EBCDIC, padded with blanks */
1743 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
1744 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
1745 strlen(qemu_name
)));
1747 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
1748 memset(sysib
.ext_names
[0], 0, sizeof(sysib
.ext_names
[0]));
1749 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1750 * considered by s390 as not capable of providing any Extended Name.
1751 * Therefore if no name was specified on qemu invocation, we go with the
1752 * same "KVMguest" default, which KVM has filled into short name field.
1755 strncpy((char *)sysib
.ext_names
[0], qemu_name
,
1756 sizeof(sysib
.ext_names
[0]));
1758 strcpy((char *)sysib
.ext_names
[0], "KVMguest");
1761 memcpy(sysib
.vm
[0].uuid
, &qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
1763 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
1766 static int handle_stsi(S390CPU
*cpu
)
1768 CPUState
*cs
= CPU(cpu
);
1769 struct kvm_run
*run
= cs
->kvm_run
;
1771 switch (run
->s390_stsi
.fc
) {
1773 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
1776 /* Only sysib 3.2.2 needs post-handling for now. */
1777 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
1784 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1786 CPUState
*cs
= CPU(cpu
);
1787 struct kvm_run
*run
= cs
->kvm_run
;
1790 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1792 switch (arch_info
->type
) {
1793 case KVM_HW_WP_WRITE
:
1794 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1795 cs
->watchpoint_hit
= &hw_watchpoint
;
1796 hw_watchpoint
.vaddr
= arch_info
->addr
;
1797 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1802 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1806 case KVM_SINGLESTEP
:
1807 if (cs
->singlestep_enabled
) {
1818 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1820 S390CPU
*cpu
= S390_CPU(cs
);
1823 qemu_mutex_lock_iothread();
1825 kvm_cpu_synchronize_state(cs
);
1827 switch (run
->exit_reason
) {
1828 case KVM_EXIT_S390_SIEIC
:
1829 ret
= handle_intercept(cpu
);
1831 case KVM_EXIT_S390_RESET
:
1832 s390_ipl_reset_request(cs
, S390_RESET_REIPL
);
1834 case KVM_EXIT_S390_TSCH
:
1835 ret
= handle_tsch(cpu
);
1837 case KVM_EXIT_S390_STSI
:
1838 ret
= handle_stsi(cpu
);
1840 case KVM_EXIT_DEBUG
:
1841 ret
= kvm_arch_handle_debug_exit(cpu
);
1844 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
1847 qemu_mutex_unlock_iothread();
1850 ret
= EXCP_INTERRUPT
;
1855 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
1860 void kvm_s390_enable_css_support(S390CPU
*cpu
)
1864 /* Activate host kernel channel subsystem support. */
1865 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
1869 void kvm_arch_init_irq_routing(KVMState
*s
)
1872 * Note that while irqchip capabilities generally imply that cpustates
1873 * are handled in-kernel, it is not true for s390 (yet); therefore, we
1874 * have to override the common code kvm_halt_in_kernel_allowed setting.
1876 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
1877 kvm_gsi_routing_allowed
= true;
1878 kvm_halt_in_kernel_allowed
= false;
1882 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
1883 int vq
, bool assign
)
1885 struct kvm_ioeventfd kick
= {
1886 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
1887 KVM_IOEVENTFD_FLAG_DATAMATCH
,
1888 .fd
= event_notifier_get_fd(notifier
),
1893 trace_kvm_assign_subch_ioeventfd(kick
.fd
, kick
.addr
, assign
,
1895 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
1899 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
1901 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
1904 int kvm_s390_get_ri(void)
1909 int kvm_s390_get_gs(void)
1914 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
1916 struct kvm_mp_state mp_state
= {};
1919 /* the kvm part might not have been initialized yet */
1920 if (CPU(cpu
)->kvm_state
== NULL
) {
1924 switch (cpu_state
) {
1925 case S390_CPU_STATE_STOPPED
:
1926 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
1928 case S390_CPU_STATE_CHECK_STOP
:
1929 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
1931 case S390_CPU_STATE_OPERATING
:
1932 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
1934 case S390_CPU_STATE_LOAD
:
1935 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
1938 error_report("Requested CPU state is not a valid S390 CPU state: %u",
1943 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
1945 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
1952 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
1954 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
1955 struct kvm_s390_irq_state irq_state
= {
1956 .buf
= (uint64_t) cpu
->irqstate
,
1957 .len
= VCPU_IRQ_BUF_SIZE(max_cpus
),
1959 CPUState
*cs
= CPU(cpu
);
1962 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
1966 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
1968 cpu
->irqstate_saved_size
= 0;
1969 error_report("Migration of interrupt state failed");
1973 cpu
->irqstate_saved_size
= bytes
;
1976 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
1978 CPUState
*cs
= CPU(cpu
);
1979 struct kvm_s390_irq_state irq_state
= {
1980 .buf
= (uint64_t) cpu
->irqstate
,
1981 .len
= cpu
->irqstate_saved_size
,
1985 if (cpu
->irqstate_saved_size
== 0) {
1989 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
1993 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
1995 error_report("Setting interrupt state failed %d", r
);
2000 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2001 uint64_t address
, uint32_t data
, PCIDevice
*dev
)
2003 S390PCIBusDevice
*pbdev
;
2004 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2007 DPRINTF("add_msi_route no pci device\n");
2011 pbdev
= s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev
)->id
);
2013 DPRINTF("add_msi_route no zpci device\n");
2017 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2019 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2020 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2021 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2022 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
+ vec
;
2023 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;
2027 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry
*route
,
2028 int vector
, PCIDevice
*dev
)
2033 int kvm_arch_release_virq_post(int virq
)
2038 int kvm_arch_msi_data_to_gsi(uint32_t data
)
2043 static int query_cpu_subfunc(S390FeatBitmap features
)
2045 struct kvm_s390_vm_cpu_subfunc prop
;
2046 struct kvm_device_attr attr
= {
2047 .group
= KVM_S390_VM_CPU_MODEL
,
2048 .attr
= KVM_S390_VM_CPU_MACHINE_SUBFUNC
,
2049 .addr
= (uint64_t) &prop
,
2053 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2059 * We're going to add all subfunctions now, if the corresponding feature
2060 * is available that unlocks the query functions.
2062 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2063 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2064 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2066 if (test_bit(S390_FEAT_MSA
, features
)) {
2067 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2068 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2069 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2070 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2071 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2073 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2074 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2076 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2077 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2078 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2079 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2080 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2082 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2083 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2085 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2086 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2088 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2089 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2091 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2092 s390_add_from_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2094 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2095 s390_add_from_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2100 static int configure_cpu_subfunc(const S390FeatBitmap features
)
2102 struct kvm_s390_vm_cpu_subfunc prop
= {};
2103 struct kvm_device_attr attr
= {
2104 .group
= KVM_S390_VM_CPU_MODEL
,
2105 .attr
= KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
,
2106 .addr
= (uint64_t) &prop
,
2109 if (!kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2110 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
)) {
2111 /* hardware support might be missing, IBC will handle most of this */
2115 s390_fill_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2116 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2117 s390_fill_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2119 if (test_bit(S390_FEAT_MSA
, features
)) {
2120 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2121 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2122 s390_fill_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2123 s390_fill_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2124 s390_fill_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2126 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2127 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2129 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2130 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2131 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2132 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2133 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2135 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2136 s390_fill_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2138 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2139 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2141 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2142 s390_fill_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2144 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2145 s390_fill_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2147 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2148 s390_fill_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2150 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2153 static int kvm_to_feat
[][2] = {
2154 { KVM_S390_VM_CPU_FEAT_ESOP
, S390_FEAT_ESOP
},
2155 { KVM_S390_VM_CPU_FEAT_SIEF2
, S390_FEAT_SIE_F2
},
2156 { KVM_S390_VM_CPU_FEAT_64BSCAO
, S390_FEAT_SIE_64BSCAO
},
2157 { KVM_S390_VM_CPU_FEAT_SIIF
, S390_FEAT_SIE_SIIF
},
2158 { KVM_S390_VM_CPU_FEAT_GPERE
, S390_FEAT_SIE_GPERE
},
2159 { KVM_S390_VM_CPU_FEAT_GSLS
, S390_FEAT_SIE_GSLS
},
2160 { KVM_S390_VM_CPU_FEAT_IB
, S390_FEAT_SIE_IB
},
2161 { KVM_S390_VM_CPU_FEAT_CEI
, S390_FEAT_SIE_CEI
},
2162 { KVM_S390_VM_CPU_FEAT_IBS
, S390_FEAT_SIE_IBS
},
2163 { KVM_S390_VM_CPU_FEAT_SKEY
, S390_FEAT_SIE_SKEY
},
2164 { KVM_S390_VM_CPU_FEAT_CMMA
, S390_FEAT_SIE_CMMA
},
2165 { KVM_S390_VM_CPU_FEAT_PFMFI
, S390_FEAT_SIE_PFMFI
},
2166 { KVM_S390_VM_CPU_FEAT_SIGPIF
, S390_FEAT_SIE_SIGPIF
},
2167 { KVM_S390_VM_CPU_FEAT_KSS
, S390_FEAT_SIE_KSS
},
2170 static int query_cpu_feat(S390FeatBitmap features
)
2172 struct kvm_s390_vm_cpu_feat prop
;
2173 struct kvm_device_attr attr
= {
2174 .group
= KVM_S390_VM_CPU_MODEL
,
2175 .attr
= KVM_S390_VM_CPU_MACHINE_FEAT
,
2176 .addr
= (uint64_t) &prop
,
2181 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2186 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2187 if (test_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
)) {
2188 set_bit(kvm_to_feat
[i
][1], features
);
2194 static int configure_cpu_feat(const S390FeatBitmap features
)
2196 struct kvm_s390_vm_cpu_feat prop
= {};
2197 struct kvm_device_attr attr
= {
2198 .group
= KVM_S390_VM_CPU_MODEL
,
2199 .attr
= KVM_S390_VM_CPU_PROCESSOR_FEAT
,
2200 .addr
= (uint64_t) &prop
,
2204 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2205 if (test_bit(kvm_to_feat
[i
][1], features
)) {
2206 set_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
);
2209 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2212 bool kvm_s390_cpu_models_supported(void)
2214 if (!cpu_model_allowed()) {
2215 /* compatibility machines interfere with the cpu model */
2218 return kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2219 KVM_S390_VM_CPU_MACHINE
) &&
2220 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2221 KVM_S390_VM_CPU_PROCESSOR
) &&
2222 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2223 KVM_S390_VM_CPU_MACHINE_FEAT
) &&
2224 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2225 KVM_S390_VM_CPU_PROCESSOR_FEAT
) &&
2226 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2227 KVM_S390_VM_CPU_MACHINE_SUBFUNC
);
2230 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
)
2232 struct kvm_s390_vm_cpu_machine prop
= {};
2233 struct kvm_device_attr attr
= {
2234 .group
= KVM_S390_VM_CPU_MODEL
,
2235 .attr
= KVM_S390_VM_CPU_MACHINE
,
2236 .addr
= (uint64_t) &prop
,
2238 uint16_t unblocked_ibc
= 0, cpu_type
= 0;
2241 memset(model
, 0, sizeof(*model
));
2243 if (!kvm_s390_cpu_models_supported()) {
2244 error_setg(errp
, "KVM doesn't support CPU models");
2248 /* query the basic cpu model properties */
2249 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2251 error_setg(errp
, "KVM: Error querying host CPU model: %d", rc
);
2255 cpu_type
= cpuid_type(prop
.cpuid
);
2256 if (has_ibc(prop
.ibc
)) {
2257 model
->lowest_ibc
= lowest_ibc(prop
.ibc
);
2258 unblocked_ibc
= unblocked_ibc(prop
.ibc
);
2260 model
->cpu_id
= cpuid_id(prop
.cpuid
);
2261 model
->cpu_id_format
= cpuid_format(prop
.cpuid
);
2262 model
->cpu_ver
= 0xff;
2264 /* get supported cpu features indicated via STFL(E) */
2265 s390_add_from_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2266 (uint8_t *) prop
.fac_mask
);
2267 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2268 if (test_bit(S390_FEAT_STFLE
, model
->features
)) {
2269 set_bit(S390_FEAT_DAT_ENH_2
, model
->features
);
2271 /* get supported cpu features indicated e.g. via SCLP */
2272 rc
= query_cpu_feat(model
->features
);
2274 error_setg(errp
, "KVM: Error querying CPU features: %d", rc
);
2277 /* get supported cpu subfunctions indicated via query / test bit */
2278 rc
= query_cpu_subfunc(model
->features
);
2280 error_setg(errp
, "KVM: Error querying CPU subfunctions: %d", rc
);
2284 /* PTFF subfunctions might be indicated although kernel support missing */
2285 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH
, model
->features
)) {
2286 clear_bit(S390_FEAT_PTFF_QSIE
, model
->features
);
2287 clear_bit(S390_FEAT_PTFF_QTOUE
, model
->features
);
2288 clear_bit(S390_FEAT_PTFF_STOE
, model
->features
);
2289 clear_bit(S390_FEAT_PTFF_STOUE
, model
->features
);
2292 /* with cpu model support, CMM is only indicated if really available */
2293 if (kvm_s390_cmma_available()) {
2294 set_bit(S390_FEAT_CMM
, model
->features
);
2296 /* no cmm -> no cmm nt */
2297 clear_bit(S390_FEAT_CMM_NT
, model
->features
);
2300 /* bpb needs kernel support for migration, VSIE and reset */
2301 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_BPB
)) {
2302 clear_bit(S390_FEAT_BPB
, model
->features
);
2305 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2306 set_bit(S390_FEAT_ZPCI
, model
->features
);
2307 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION
, model
->features
);
2309 if (s390_known_cpu_type(cpu_type
)) {
2310 /* we want the exact model, even if some features are missing */
2311 model
->def
= s390_find_cpu_def(cpu_type
, ibc_gen(unblocked_ibc
),
2312 ibc_ec_ga(unblocked_ibc
), NULL
);
2314 /* model unknown, e.g. too new - search using features */
2315 model
->def
= s390_find_cpu_def(0, ibc_gen(unblocked_ibc
),
2316 ibc_ec_ga(unblocked_ibc
),
2320 error_setg(errp
, "KVM: host CPU model could not be identified");
2323 /* for now, we can only provide the AP feature with HW support */
2324 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
,
2325 KVM_S390_VM_CRYPTO_ENABLE_APIE
)) {
2326 set_bit(S390_FEAT_AP
, model
->features
);
2328 /* strip of features that are not part of the maximum model */
2329 bitmap_and(model
->features
, model
->features
, model
->def
->full_feat
,
2333 static void kvm_s390_configure_apie(bool interpret
)
2335 uint64_t attr
= interpret
? KVM_S390_VM_CRYPTO_ENABLE_APIE
:
2336 KVM_S390_VM_CRYPTO_DISABLE_APIE
;
2338 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
2339 kvm_s390_set_attr(attr
);
2343 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
2345 struct kvm_s390_vm_cpu_processor prop
= {
2348 struct kvm_device_attr attr
= {
2349 .group
= KVM_S390_VM_CPU_MODEL
,
2350 .attr
= KVM_S390_VM_CPU_PROCESSOR
,
2351 .addr
= (uint64_t) &prop
,
2356 /* compatibility handling if cpu models are disabled */
2357 if (kvm_s390_cmma_available()) {
2358 kvm_s390_enable_cmma();
2362 if (!kvm_s390_cpu_models_supported()) {
2363 error_setg(errp
, "KVM doesn't support CPU models");
2366 prop
.cpuid
= s390_cpuid_from_cpu_model(model
);
2367 prop
.ibc
= s390_ibc_from_cpu_model(model
);
2368 /* configure cpu features indicated via STFL(e) */
2369 s390_fill_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2370 (uint8_t *) prop
.fac_list
);
2371 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2373 error_setg(errp
, "KVM: Error configuring the CPU model: %d", rc
);
2376 /* configure cpu features indicated e.g. via SCLP */
2377 rc
= configure_cpu_feat(model
->features
);
2379 error_setg(errp
, "KVM: Error configuring CPU features: %d", rc
);
2382 /* configure cpu subfunctions indicated via query / test bit */
2383 rc
= configure_cpu_subfunc(model
->features
);
2385 error_setg(errp
, "KVM: Error configuring CPU subfunctions: %d", rc
);
2388 /* enable CMM via CMMA */
2389 if (test_bit(S390_FEAT_CMM
, model
->features
)) {
2390 kvm_s390_enable_cmma();
2393 if (test_bit(S390_FEAT_AP
, model
->features
)) {
2394 kvm_s390_configure_apie(true);
2398 void kvm_s390_restart_interrupt(S390CPU
*cpu
)
2400 struct kvm_s390_irq irq
= {
2401 .type
= KVM_S390_RESTART
,
2404 kvm_s390_vcpu_interrupt(cpu
, &irq
);
2407 void kvm_s390_stop_interrupt(S390CPU
*cpu
)
2409 struct kvm_s390_irq irq
= {
2410 .type
= KVM_S390_SIGP_STOP
,
2413 kvm_s390_vcpu_interrupt(cpu
, &irq
);