2 * QEMU S390x KVM implementation
4 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
5 * Copyright IBM Corp. 2012
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * Contributions after 2012-10-29 are licensed under the terms of the
18 * GNU GPL, version 2 or (at your option) any later version.
20 * You should have received a copy of the GNU (Lesser) General Public
21 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
24 #include "qemu/osdep.h"
25 #include <sys/ioctl.h>
27 #include <linux/kvm.h>
28 #include <asm/ptrace.h>
30 #include "qemu-common.h"
33 #include "kvm_s390x.h"
34 #include "qapi/error.h"
35 #include "qemu/error-report.h"
36 #include "qemu/timer.h"
37 #include "sysemu/sysemu.h"
38 #include "sysemu/hw_accel.h"
40 #include "sysemu/device_tree.h"
41 #include "exec/gdbstub.h"
43 #include "hw/s390x/s390-pci-inst.h"
44 #include "hw/s390x/s390-pci-bus.h"
45 #include "hw/s390x/ipl.h"
46 #include "hw/s390x/ebcdic.h"
47 #include "exec/memattrs.h"
48 #include "hw/s390x/s390-virtio-ccw.h"
49 #include "hw/s390x/s390-virtio-hcall.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 int cap_sync_regs
;
137 static int cap_async_pf
;
138 static int cap_mem_op
;
139 static int cap_s390_irq
;
143 static int active_cmma
;
145 static void *legacy_s390_alloc(size_t size
, uint64_t *align
, bool shared
);
147 static int kvm_s390_query_mem_limit(uint64_t *memory_limit
)
149 struct kvm_device_attr attr
= {
150 .group
= KVM_S390_VM_MEM_CTRL
,
151 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
152 .addr
= (uint64_t) memory_limit
,
155 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
158 int kvm_s390_set_mem_limit(uint64_t new_limit
, uint64_t *hw_limit
)
162 struct kvm_device_attr attr
= {
163 .group
= KVM_S390_VM_MEM_CTRL
,
164 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
165 .addr
= (uint64_t) &new_limit
,
168 if (!kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
172 rc
= kvm_s390_query_mem_limit(hw_limit
);
175 } else if (*hw_limit
< new_limit
) {
179 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
182 int kvm_s390_cmma_active(void)
187 static bool kvm_s390_cmma_available(void)
189 static bool initialized
, value
;
193 value
= kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_ENABLE_CMMA
) &&
194 kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_CLR_CMMA
);
199 void kvm_s390_cmma_reset(void)
202 struct kvm_device_attr attr
= {
203 .group
= KVM_S390_VM_MEM_CTRL
,
204 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
207 if (!kvm_s390_cmma_active()) {
211 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
212 trace_kvm_clear_cmma(rc
);
215 static void kvm_s390_enable_cmma(void)
218 struct kvm_device_attr attr
= {
219 .group
= KVM_S390_VM_MEM_CTRL
,
220 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
224 warn_report("CMM will not be enabled because it is not "
225 "compatible with hugetlbfs.");
228 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
230 trace_kvm_enable_cmma(rc
);
233 static void kvm_s390_set_attr(uint64_t attr
)
235 struct kvm_device_attr attribute
= {
236 .group
= KVM_S390_VM_CRYPTO
,
240 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
243 error_report("Failed to set crypto device attribute %lu: %s",
244 attr
, strerror(-ret
));
248 static void kvm_s390_init_aes_kw(void)
250 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
252 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
254 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
257 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
258 kvm_s390_set_attr(attr
);
262 static void kvm_s390_init_dea_kw(void)
264 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
266 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
268 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
271 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
272 kvm_s390_set_attr(attr
);
276 void kvm_s390_crypto_reset(void)
278 if (s390_has_feat(S390_FEAT_MSA_EXT_3
)) {
279 kvm_s390_init_aes_kw();
280 kvm_s390_init_dea_kw();
284 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
286 MachineClass
*mc
= MACHINE_GET_CLASS(ms
);
288 mc
->default_cpu_type
= S390_CPU_TYPE_NAME("host");
289 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
290 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
291 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
292 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
294 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
295 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
296 phys_mem_set_alloc(legacy_s390_alloc
);
299 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
300 kvm_vm_enable_cap(s
, KVM_CAP_S390_VECTOR_REGISTERS
, 0);
301 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
303 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_RI
, 0) == 0) {
307 if (cpu_model_allowed()) {
308 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_GS
, 0) == 0) {
314 * The migration interface for ais was introduced with kernel 4.13
315 * but the capability itself had been active since 4.12. As migration
316 * support is considered necessary let's disable ais in the 2.10
319 /* kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0); */
324 int kvm_arch_irqchip_create(MachineState
*ms
, KVMState
*s
)
329 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
331 return cpu
->cpu_index
;
334 int kvm_arch_init_vcpu(CPUState
*cs
)
336 S390CPU
*cpu
= S390_CPU(cs
);
337 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
338 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE
);
342 void kvm_s390_reset_vcpu(S390CPU
*cpu
)
344 CPUState
*cs
= CPU(cpu
);
346 /* The initial reset call is needed here to reset in-kernel
347 * vcpu data that we can't access directly from QEMU
348 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
349 * Before this ioctl cpu_synchronize_state() is called in common kvm
351 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
)) {
352 error_report("Initial CPU reset failed on CPU %i", cs
->cpu_index
);
356 static int can_sync_regs(CPUState
*cs
, int regs
)
358 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
361 int kvm_arch_put_registers(CPUState
*cs
, int level
)
363 S390CPU
*cpu
= S390_CPU(cs
);
364 CPUS390XState
*env
= &cpu
->env
;
365 struct kvm_sregs sregs
;
366 struct kvm_regs regs
;
367 struct kvm_fpu fpu
= {};
371 /* always save the PSW and the GPRS*/
372 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
373 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
375 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
376 for (i
= 0; i
< 16; i
++) {
377 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
378 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
381 for (i
= 0; i
< 16; i
++) {
382 regs
.gprs
[i
] = env
->regs
[i
];
384 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
390 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
391 for (i
= 0; i
< 32; i
++) {
392 cs
->kvm_run
->s
.regs
.vrs
[i
][0] = env
->vregs
[i
][0].ll
;
393 cs
->kvm_run
->s
.regs
.vrs
[i
][1] = env
->vregs
[i
][1].ll
;
395 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
396 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_VRS
;
397 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
398 for (i
= 0; i
< 16; i
++) {
399 cs
->kvm_run
->s
.regs
.fprs
[i
] = get_freg(env
, i
)->ll
;
401 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
402 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_FPRS
;
405 for (i
= 0; i
< 16; i
++) {
406 fpu
.fprs
[i
] = get_freg(env
, i
)->ll
;
410 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
416 /* Do we need to save more than that? */
417 if (level
== KVM_PUT_RUNTIME_STATE
) {
421 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
422 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
423 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
424 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
425 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
426 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
427 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
430 * These ONE_REGS are not protected by a capability. As they are only
431 * necessary for migration we just trace a possible error, but don't
432 * return with an error return code.
434 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
435 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
436 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
437 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
438 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
441 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
442 memcpy(cs
->kvm_run
->s
.regs
.riccb
, env
->riccb
, 64);
443 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_RICCB
;
446 /* pfault parameters */
447 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
448 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
449 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
450 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
451 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
452 } else if (cap_async_pf
) {
453 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
457 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
461 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
467 /* access registers and control registers*/
468 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
469 for (i
= 0; i
< 16; i
++) {
470 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
471 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
473 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
474 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
476 for (i
= 0; i
< 16; i
++) {
477 sregs
.acrs
[i
] = env
->aregs
[i
];
478 sregs
.crs
[i
] = env
->cregs
[i
];
480 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
486 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
487 memcpy(cs
->kvm_run
->s
.regs
.gscb
, env
->gscb
, 32);
488 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GSCB
;
491 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
492 cs
->kvm_run
->s
.regs
.bpbc
= env
->bpbc
;
493 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_BPBC
;
496 /* Finally the prefix */
497 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
498 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
499 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
501 /* prefix is only supported via sync regs */
506 int kvm_arch_get_registers(CPUState
*cs
)
508 S390CPU
*cpu
= S390_CPU(cs
);
509 CPUS390XState
*env
= &cpu
->env
;
510 struct kvm_sregs sregs
;
511 struct kvm_regs regs
;
516 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
517 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
520 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
521 for (i
= 0; i
< 16; i
++) {
522 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
525 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
529 for (i
= 0; i
< 16; i
++) {
530 env
->regs
[i
] = regs
.gprs
[i
];
534 /* The ACRS and CRS */
535 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
536 for (i
= 0; i
< 16; i
++) {
537 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
538 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
541 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
545 for (i
= 0; i
< 16; i
++) {
546 env
->aregs
[i
] = sregs
.acrs
[i
];
547 env
->cregs
[i
] = sregs
.crs
[i
];
551 /* Floating point and vector registers */
552 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
553 for (i
= 0; i
< 32; i
++) {
554 env
->vregs
[i
][0].ll
= cs
->kvm_run
->s
.regs
.vrs
[i
][0];
555 env
->vregs
[i
][1].ll
= cs
->kvm_run
->s
.regs
.vrs
[i
][1];
557 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
558 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
559 for (i
= 0; i
< 16; i
++) {
560 get_freg(env
, i
)->ll
= cs
->kvm_run
->s
.regs
.fprs
[i
];
562 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
564 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
568 for (i
= 0; i
< 16; i
++) {
569 get_freg(env
, i
)->ll
= fpu
.fprs
[i
];
575 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
576 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
579 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
580 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
581 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
582 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
583 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
584 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
587 * These ONE_REGS are not protected by a capability. As they are only
588 * necessary for migration we just trace a possible error, but don't
589 * return with an error return code.
591 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
592 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
593 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
594 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
595 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
598 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
599 memcpy(env
->riccb
, cs
->kvm_run
->s
.regs
.riccb
, 64);
602 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
603 memcpy(env
->gscb
, cs
->kvm_run
->s
.regs
.gscb
, 32);
606 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
607 env
->bpbc
= cs
->kvm_run
->s
.regs
.bpbc
;
610 /* pfault parameters */
611 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
612 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
613 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
614 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
615 } else if (cap_async_pf
) {
616 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
620 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
624 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
633 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
636 struct kvm_device_attr attr
= {
637 .group
= KVM_S390_VM_TOD
,
638 .attr
= KVM_S390_VM_TOD_LOW
,
639 .addr
= (uint64_t)tod_low
,
642 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
647 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
648 attr
.addr
= (uint64_t)tod_high
;
649 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
652 int kvm_s390_get_clock_ext(uint8_t *tod_high
, uint64_t *tod_low
)
655 struct kvm_s390_vm_tod_clock gtod
;
656 struct kvm_device_attr attr
= {
657 .group
= KVM_S390_VM_TOD
,
658 .attr
= KVM_S390_VM_TOD_EXT
,
659 .addr
= (uint64_t)>od
,
662 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
663 *tod_high
= gtod
.epoch_idx
;
669 int kvm_s390_set_clock(uint8_t tod_high
, uint64_t tod_low
)
672 struct kvm_device_attr attr
= {
673 .group
= KVM_S390_VM_TOD
,
674 .attr
= KVM_S390_VM_TOD_LOW
,
675 .addr
= (uint64_t)&tod_low
,
678 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
683 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
684 attr
.addr
= (uint64_t)&tod_high
;
685 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
688 int kvm_s390_set_clock_ext(uint8_t tod_high
, uint64_t tod_low
)
690 struct kvm_s390_vm_tod_clock gtod
= {
691 .epoch_idx
= tod_high
,
694 struct kvm_device_attr attr
= {
695 .group
= KVM_S390_VM_TOD
,
696 .attr
= KVM_S390_VM_TOD_EXT
,
697 .addr
= (uint64_t)>od
,
700 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
705 * @addr: the logical start address in guest memory
706 * @ar: the access register number
707 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
708 * @len: length that should be transferred
709 * @is_write: true = write, false = read
710 * Returns: 0 on success, non-zero if an exception or error occurred
712 * Use KVM ioctl to read/write from/to guest memory. An access exception
713 * is injected into the vCPU in case of translation errors.
715 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
716 int len
, bool is_write
)
718 struct kvm_s390_mem_op mem_op
= {
720 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
722 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
723 : KVM_S390_MEMOP_LOGICAL_READ
,
724 .buf
= (uint64_t)hostbuf
,
733 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
736 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
738 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret
));
744 * Legacy layout for s390:
745 * Older S390 KVM requires the topmost vma of the RAM to be
746 * smaller than an system defined value, which is at least 256GB.
747 * Larger systems have larger values. We put the guest between
748 * the end of data segment (system break) and this value. We
749 * use 32GB as a base to have enough room for the system break
750 * to grow. We also have to use MAP parameters that avoid
751 * read-only mapping of guest pages.
753 static void *legacy_s390_alloc(size_t size
, uint64_t *align
, bool shared
)
758 /* we only support one allocation, which is enough for initial ram */
762 mem
= mmap((void *) 0x800000000ULL
, size
,
763 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
764 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
765 if (mem
== MAP_FAILED
) {
769 *align
= QEMU_VMALLOC_ALIGN
;
774 static uint8_t const *sw_bp_inst
;
775 static uint8_t sw_bp_ilen
;
777 static void determine_sw_breakpoint_instr(void)
779 /* DIAG 501 is used for sw breakpoints with old kernels */
780 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
781 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
782 static const uint8_t instr_0x0000
[] = {0x00, 0x00};
787 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_USER_INSTR0
, 0)) {
788 sw_bp_inst
= diag_501
;
789 sw_bp_ilen
= sizeof(diag_501
);
790 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
792 sw_bp_inst
= instr_0x0000
;
793 sw_bp_ilen
= sizeof(instr_0x0000
);
794 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
798 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
800 determine_sw_breakpoint_instr();
802 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
804 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)sw_bp_inst
, sw_bp_ilen
, 1)) {
810 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
814 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sw_bp_ilen
, 0)) {
816 } else if (memcmp(t
, sw_bp_inst
, sw_bp_ilen
)) {
818 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
826 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
831 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
832 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
833 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
834 return &hw_breakpoints
[n
];
841 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
845 if (find_hw_breakpoint(addr
, len
, type
)) {
849 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
851 if (!hw_breakpoints
) {
852 nb_hw_breakpoints
= 0;
853 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
856 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
859 if (!hw_breakpoints
) {
860 nb_hw_breakpoints
= 0;
864 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
865 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
866 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
873 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
874 target_ulong len
, int type
)
877 case GDB_BREAKPOINT_HW
:
880 case GDB_WATCHPOINT_WRITE
:
884 type
= KVM_HW_WP_WRITE
;
889 return insert_hw_breakpoint(addr
, len
, type
);
892 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
893 target_ulong len
, int type
)
896 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
903 if (nb_hw_breakpoints
> 0) {
905 * In order to trim the array, move the last element to the position to
906 * be removed - if necessary.
908 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
909 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
911 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
913 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
915 g_free(hw_breakpoints
);
916 hw_breakpoints
= NULL
;
922 void kvm_arch_remove_all_hw_breakpoints(void)
924 nb_hw_breakpoints
= 0;
925 g_free(hw_breakpoints
);
926 hw_breakpoints
= NULL
;
929 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
933 if (nb_hw_breakpoints
> 0) {
934 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
935 dbg
->arch
.hw_bp
= hw_breakpoints
;
937 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
938 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
939 hw_breakpoints
[i
].addr
);
941 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
943 dbg
->arch
.nr_hw_bp
= 0;
944 dbg
->arch
.hw_bp
= NULL
;
948 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
952 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
954 return MEMTXATTRS_UNSPECIFIED
;
957 int kvm_arch_process_async_events(CPUState
*cs
)
962 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
963 struct kvm_s390_interrupt
*interrupt
)
967 interrupt
->type
= irq
->type
;
969 case KVM_S390_INT_VIRTIO
:
970 interrupt
->parm
= irq
->u
.ext
.ext_params
;
972 case KVM_S390_INT_PFAULT_INIT
:
973 case KVM_S390_INT_PFAULT_DONE
:
974 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
976 case KVM_S390_PROGRAM_INT
:
977 interrupt
->parm
= irq
->u
.pgm
.code
;
979 case KVM_S390_SIGP_SET_PREFIX
:
980 interrupt
->parm
= irq
->u
.prefix
.address
;
982 case KVM_S390_INT_SERVICE
:
983 interrupt
->parm
= irq
->u
.ext
.ext_params
;
986 interrupt
->parm
= irq
->u
.mchk
.cr14
;
987 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
989 case KVM_S390_INT_EXTERNAL_CALL
:
990 interrupt
->parm
= irq
->u
.extcall
.code
;
992 case KVM_S390_INT_EMERGENCY
:
993 interrupt
->parm
= irq
->u
.emerg
.code
;
995 case KVM_S390_SIGP_STOP
:
996 case KVM_S390_RESTART
:
997 break; /* These types have no parameters */
998 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
999 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
1000 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
1001 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
1002 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
1011 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
1013 struct kvm_s390_interrupt kvmint
= {};
1016 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1018 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1022 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
1024 fprintf(stderr
, "KVM failed to inject interrupt\n");
1029 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
1031 CPUState
*cs
= CPU(cpu
);
1035 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
1039 error_report("KVM failed to inject interrupt %llx", irq
->type
);
1043 inject_vcpu_irq_legacy(cs
, irq
);
1046 void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq
*irq
)
1048 struct kvm_s390_interrupt kvmint
= {};
1051 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1053 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1057 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
1059 fprintf(stderr
, "KVM failed to inject interrupt\n");
1064 void kvm_s390_program_interrupt(S390CPU
*cpu
, uint16_t code
)
1066 struct kvm_s390_irq irq
= {
1067 .type
= KVM_S390_PROGRAM_INT
,
1071 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1074 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
1076 struct kvm_s390_irq irq
= {
1077 .type
= KVM_S390_PROGRAM_INT
,
1079 .u
.pgm
.trans_exc_code
= te_code
,
1080 .u
.pgm
.exc_access_id
= te_code
& 3,
1083 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1086 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
1089 CPUS390XState
*env
= &cpu
->env
;
1094 sccb
= env
->regs
[ipbh0
& 0xf];
1095 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
1097 r
= sclp_service_call(env
, sccb
, code
);
1099 kvm_s390_program_interrupt(cpu
, -r
);
1107 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1109 CPUS390XState
*env
= &cpu
->env
;
1111 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
1115 ioinst_handle_xsch(cpu
, env
->regs
[1], RA_IGNORED
);
1118 ioinst_handle_csch(cpu
, env
->regs
[1], RA_IGNORED
);
1121 ioinst_handle_hsch(cpu
, env
->regs
[1], RA_IGNORED
);
1124 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1127 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1130 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1133 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1136 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1137 fprintf(stderr
, "Spurious tsch intercept\n");
1140 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1143 /* This should have been handled by kvm already. */
1144 fprintf(stderr
, "Spurious tpi intercept\n");
1147 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1148 run
->s390_sieic
.ipb
, RA_IGNORED
);
1151 ioinst_handle_rsch(cpu
, env
->regs
[1], RA_IGNORED
);
1154 ioinst_handle_rchp(cpu
, env
->regs
[1], RA_IGNORED
);
1157 /* We do not provide this instruction, it is suppressed. */
1160 ioinst_handle_sal(cpu
, env
->regs
[1], RA_IGNORED
);
1163 /* Not provided, set CC = 3 for subchannel not operational */
1166 case PRIV_B2_SCLP_CALL
:
1167 rc
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
1171 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1178 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1181 CPUS390XState
*env
= &cpu
->env
;
1182 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1183 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1184 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1185 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1187 if (disp2
& 0x80000) {
1188 disp2
+= 0xfff00000;
1194 return (base2
? env
->regs
[base2
] : 0) +
1195 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1198 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1201 CPUS390XState
*env
= &cpu
->env
;
1202 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1203 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1204 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1206 if (disp2
& 0x80000) {
1207 disp2
+= 0xfff00000;
1213 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1216 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1218 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1220 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1221 return clp_service_call(cpu
, r2
, RA_IGNORED
);
1227 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1229 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1230 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1232 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1233 return pcilg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1239 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1241 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1242 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1244 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1245 return pcistg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1251 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1253 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1257 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1258 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1260 return stpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1266 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1268 CPUS390XState
*env
= &cpu
->env
;
1269 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1270 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1275 mode
= env
->regs
[r1
] & 0xffff;
1276 isc
= (env
->regs
[r3
] >> 27) & 0x7;
1277 r
= css_do_sic(env
, isc
, mode
);
1279 kvm_s390_program_interrupt(cpu
, -r
);
1285 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1287 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1288 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1290 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1291 return rpcit_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1297 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1299 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1300 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1304 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1305 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1307 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
, RA_IGNORED
);
1313 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1315 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1319 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1320 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1322 return mpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1328 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1334 r
= kvm_clp_service_call(cpu
, run
);
1336 case PRIV_B9_PCISTG
:
1337 r
= kvm_pcistg_service_call(cpu
, run
);
1340 r
= kvm_pcilg_service_call(cpu
, run
);
1343 r
= kvm_rpcit_service_call(cpu
, run
);
1346 /* just inject exception */
1351 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1358 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1363 case PRIV_EB_PCISTB
:
1364 r
= kvm_pcistb_service_call(cpu
, run
);
1367 r
= kvm_sic_service_call(cpu
, run
);
1370 /* just inject exception */
1375 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1382 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1387 case PRIV_E3_MPCIFC
:
1388 r
= kvm_mpcifc_service_call(cpu
, run
);
1390 case PRIV_E3_STPCIFC
:
1391 r
= kvm_stpcifc_service_call(cpu
, run
);
1395 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1402 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1404 CPUS390XState
*env
= &cpu
->env
;
1407 ret
= s390_virtio_hypercall(env
);
1408 if (ret
== -EINVAL
) {
1409 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1416 static void kvm_handle_diag_288(S390CPU
*cpu
, struct kvm_run
*run
)
1421 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1422 r3
= run
->s390_sieic
.ipa
& 0x000f;
1423 rc
= handle_diag_288(&cpu
->env
, r1
, r3
);
1425 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1429 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1433 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1434 r3
= run
->s390_sieic
.ipa
& 0x000f;
1435 handle_diag_308(&cpu
->env
, r1
, r3
, RA_IGNORED
);
1438 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1440 CPUS390XState
*env
= &cpu
->env
;
1443 pc
= env
->psw
.addr
- sw_bp_ilen
;
1444 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1452 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1454 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1460 * For any diagnose call we support, bits 48-63 of the resulting
1461 * address specify the function code; the remainder is ignored.
1463 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1464 switch (func_code
) {
1465 case DIAG_TIMEREVENT
:
1466 kvm_handle_diag_288(cpu
, run
);
1469 kvm_handle_diag_308(cpu
, run
);
1471 case DIAG_KVM_HYPERCALL
:
1472 r
= handle_hypercall(cpu
, run
);
1474 case DIAG_KVM_BREAKPOINT
:
1475 r
= handle_sw_breakpoint(cpu
, run
);
1478 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1479 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1486 static int kvm_s390_handle_sigp(S390CPU
*cpu
, uint8_t ipa1
, uint32_t ipb
)
1488 CPUS390XState
*env
= &cpu
->env
;
1489 const uint8_t r1
= ipa1
>> 4;
1490 const uint8_t r3
= ipa1
& 0x0f;
1494 /* get order code */
1495 order
= decode_basedisp_rs(env
, ipb
, NULL
) & SIGP_ORDER_MASK
;
1497 ret
= handle_sigp(env
, order
, r1
, r3
);
1502 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1504 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1505 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1508 DPRINTF("handle_instruction 0x%x 0x%x\n",
1509 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1512 r
= handle_b2(cpu
, run
, ipa1
);
1515 r
= handle_b9(cpu
, run
, ipa1
);
1518 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1521 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1524 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1527 r
= kvm_s390_handle_sigp(cpu
, ipa1
, run
->s390_sieic
.ipb
);
1533 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1539 static void unmanageable_intercept(S390CPU
*cpu
, S390CrashReason reason
,
1542 CPUState
*cs
= CPU(cpu
);
1545 cpu
->env
.crash_reason
= reason
;
1546 qemu_system_guest_panicked(cpu_get_crash_info(cs
));
1549 /* try to detect pgm check loops */
1550 static int handle_oper_loop(S390CPU
*cpu
, struct kvm_run
*run
)
1552 CPUState
*cs
= CPU(cpu
);
1555 newpsw
.mask
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1556 offsetof(LowCore
, program_new_psw
));
1557 newpsw
.addr
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1558 offsetof(LowCore
, program_new_psw
) + 8);
1559 oldpsw
.mask
= run
->psw_mask
;
1560 oldpsw
.addr
= run
->psw_addr
;
1562 * Avoid endless loops of operation exceptions, if the pgm new
1563 * PSW will cause a new operation exception.
1564 * The heuristic checks if the pgm new psw is within 6 bytes before
1565 * the faulting psw address (with same DAT, AS settings) and the
1566 * new psw is not a wait psw and the fault was not triggered by
1567 * problem state. In that case go into crashed state.
1570 if (oldpsw
.addr
- newpsw
.addr
<= 6 &&
1571 !(newpsw
.mask
& PSW_MASK_WAIT
) &&
1572 !(oldpsw
.mask
& PSW_MASK_PSTATE
) &&
1573 (newpsw
.mask
& PSW_MASK_ASC
) == (oldpsw
.mask
& PSW_MASK_ASC
) &&
1574 (newpsw
.mask
& PSW_MASK_DAT
) == (oldpsw
.mask
& PSW_MASK_DAT
)) {
1575 unmanageable_intercept(cpu
, S390_CRASH_REASON_OPINT_LOOP
,
1576 offsetof(LowCore
, program_new_psw
));
1582 static int handle_intercept(S390CPU
*cpu
)
1584 CPUState
*cs
= CPU(cpu
);
1585 struct kvm_run
*run
= cs
->kvm_run
;
1586 int icpt_code
= run
->s390_sieic
.icptcode
;
1589 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1590 (long)cs
->kvm_run
->psw_addr
);
1591 switch (icpt_code
) {
1592 case ICPT_INSTRUCTION
:
1593 r
= handle_instruction(cpu
, run
);
1596 unmanageable_intercept(cpu
, S390_CRASH_REASON_PGMINT_LOOP
,
1597 offsetof(LowCore
, program_new_psw
));
1601 unmanageable_intercept(cpu
, S390_CRASH_REASON_EXTINT_LOOP
,
1602 offsetof(LowCore
, external_new_psw
));
1606 /* disabled wait, since enabled wait is handled in kernel */
1607 s390_handle_wait(cpu
);
1611 do_stop_interrupt(&cpu
->env
);
1615 /* check for break points */
1616 r
= handle_sw_breakpoint(cpu
, run
);
1618 /* Then check for potential pgm check loops */
1619 r
= handle_oper_loop(cpu
, run
);
1621 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1625 case ICPT_SOFT_INTERCEPT
:
1626 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1630 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1634 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1642 static int handle_tsch(S390CPU
*cpu
)
1644 CPUState
*cs
= CPU(cpu
);
1645 struct kvm_run
*run
= cs
->kvm_run
;
1648 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
,
1653 * If an I/O interrupt had been dequeued, we have to reinject it.
1655 if (run
->s390_tsch
.dequeued
) {
1656 s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1657 run
->s390_tsch
.subchannel_nr
,
1658 run
->s390_tsch
.io_int_parm
,
1659 run
->s390_tsch
.io_int_word
);
1666 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
1671 if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
1674 /* Shift the stack of Extended Names to prepare for our own data */
1675 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
1676 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
1677 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1678 * assumed it's not capable of managing Extended Names for lower levels.
1680 for (del
= 1; del
< sysib
.count
; del
++) {
1681 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
1685 if (del
< sysib
.count
) {
1686 memset(sysib
.ext_names
[del
], 0,
1687 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
1689 /* Insert short machine name in EBCDIC, padded with blanks */
1691 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
1692 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
1693 strlen(qemu_name
)));
1695 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
1696 memset(sysib
.ext_names
[0], 0, sizeof(sysib
.ext_names
[0]));
1697 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1698 * considered by s390 as not capable of providing any Extended Name.
1699 * Therefore if no name was specified on qemu invocation, we go with the
1700 * same "KVMguest" default, which KVM has filled into short name field.
1703 strncpy((char *)sysib
.ext_names
[0], qemu_name
,
1704 sizeof(sysib
.ext_names
[0]));
1706 strcpy((char *)sysib
.ext_names
[0], "KVMguest");
1709 memcpy(sysib
.vm
[0].uuid
, &qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
1711 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
1714 static int handle_stsi(S390CPU
*cpu
)
1716 CPUState
*cs
= CPU(cpu
);
1717 struct kvm_run
*run
= cs
->kvm_run
;
1719 switch (run
->s390_stsi
.fc
) {
1721 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
1724 /* Only sysib 3.2.2 needs post-handling for now. */
1725 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
1732 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1734 CPUState
*cs
= CPU(cpu
);
1735 struct kvm_run
*run
= cs
->kvm_run
;
1738 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1740 switch (arch_info
->type
) {
1741 case KVM_HW_WP_WRITE
:
1742 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1743 cs
->watchpoint_hit
= &hw_watchpoint
;
1744 hw_watchpoint
.vaddr
= arch_info
->addr
;
1745 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1750 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1754 case KVM_SINGLESTEP
:
1755 if (cs
->singlestep_enabled
) {
1766 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1768 S390CPU
*cpu
= S390_CPU(cs
);
1771 qemu_mutex_lock_iothread();
1773 kvm_cpu_synchronize_state(cs
);
1775 switch (run
->exit_reason
) {
1776 case KVM_EXIT_S390_SIEIC
:
1777 ret
= handle_intercept(cpu
);
1779 case KVM_EXIT_S390_RESET
:
1780 s390_ipl_reset_request(cs
, S390_RESET_REIPL
);
1782 case KVM_EXIT_S390_TSCH
:
1783 ret
= handle_tsch(cpu
);
1785 case KVM_EXIT_S390_STSI
:
1786 ret
= handle_stsi(cpu
);
1788 case KVM_EXIT_DEBUG
:
1789 ret
= kvm_arch_handle_debug_exit(cpu
);
1792 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
1795 qemu_mutex_unlock_iothread();
1798 ret
= EXCP_INTERRUPT
;
1803 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
1808 void kvm_s390_enable_css_support(S390CPU
*cpu
)
1812 /* Activate host kernel channel subsystem support. */
1813 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
1817 void kvm_arch_init_irq_routing(KVMState
*s
)
1820 * Note that while irqchip capabilities generally imply that cpustates
1821 * are handled in-kernel, it is not true for s390 (yet); therefore, we
1822 * have to override the common code kvm_halt_in_kernel_allowed setting.
1824 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
1825 kvm_gsi_routing_allowed
= true;
1826 kvm_halt_in_kernel_allowed
= false;
1830 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
1831 int vq
, bool assign
)
1833 struct kvm_ioeventfd kick
= {
1834 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
1835 KVM_IOEVENTFD_FLAG_DATAMATCH
,
1836 .fd
= event_notifier_get_fd(notifier
),
1841 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
1845 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
1847 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
1850 int kvm_s390_get_ri(void)
1855 int kvm_s390_get_gs(void)
1860 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
1862 struct kvm_mp_state mp_state
= {};
1865 /* the kvm part might not have been initialized yet */
1866 if (CPU(cpu
)->kvm_state
== NULL
) {
1870 switch (cpu_state
) {
1871 case S390_CPU_STATE_STOPPED
:
1872 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
1874 case S390_CPU_STATE_CHECK_STOP
:
1875 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
1877 case S390_CPU_STATE_OPERATING
:
1878 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
1880 case S390_CPU_STATE_LOAD
:
1881 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
1884 error_report("Requested CPU state is not a valid S390 CPU state: %u",
1889 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
1891 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
1898 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
1900 struct kvm_s390_irq_state irq_state
= {
1901 .buf
= (uint64_t) cpu
->irqstate
,
1902 .len
= VCPU_IRQ_BUF_SIZE
,
1904 CPUState
*cs
= CPU(cpu
);
1907 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
1911 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
1913 cpu
->irqstate_saved_size
= 0;
1914 error_report("Migration of interrupt state failed");
1918 cpu
->irqstate_saved_size
= bytes
;
1921 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
1923 CPUState
*cs
= CPU(cpu
);
1924 struct kvm_s390_irq_state irq_state
= {
1925 .buf
= (uint64_t) cpu
->irqstate
,
1926 .len
= cpu
->irqstate_saved_size
,
1930 if (cpu
->irqstate_saved_size
== 0) {
1934 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
1938 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
1940 error_report("Setting interrupt state failed %d", r
);
1945 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
1946 uint64_t address
, uint32_t data
, PCIDevice
*dev
)
1948 S390PCIBusDevice
*pbdev
;
1949 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
1952 DPRINTF("add_msi_route no pci device\n");
1956 pbdev
= s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev
)->id
);
1958 DPRINTF("add_msi_route no zpci device\n");
1962 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
1964 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
1965 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
1966 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
1967 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
+ vec
;
1968 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;
1972 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry
*route
,
1973 int vector
, PCIDevice
*dev
)
1978 int kvm_arch_release_virq_post(int virq
)
1983 int kvm_arch_msi_data_to_gsi(uint32_t data
)
1988 static int query_cpu_subfunc(S390FeatBitmap features
)
1990 struct kvm_s390_vm_cpu_subfunc prop
;
1991 struct kvm_device_attr attr
= {
1992 .group
= KVM_S390_VM_CPU_MODEL
,
1993 .attr
= KVM_S390_VM_CPU_MACHINE_SUBFUNC
,
1994 .addr
= (uint64_t) &prop
,
1998 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2004 * We're going to add all subfunctions now, if the corresponding feature
2005 * is available that unlocks the query functions.
2007 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2008 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2009 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2011 if (test_bit(S390_FEAT_MSA
, features
)) {
2012 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2013 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2014 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2015 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2016 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2018 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2019 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2021 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2022 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2023 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2024 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2025 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2027 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2028 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2030 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2031 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2036 static int configure_cpu_subfunc(const S390FeatBitmap features
)
2038 struct kvm_s390_vm_cpu_subfunc prop
= {};
2039 struct kvm_device_attr attr
= {
2040 .group
= KVM_S390_VM_CPU_MODEL
,
2041 .attr
= KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
,
2042 .addr
= (uint64_t) &prop
,
2045 if (!kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2046 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
)) {
2047 /* hardware support might be missing, IBC will handle most of this */
2051 s390_fill_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2052 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2053 s390_fill_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2055 if (test_bit(S390_FEAT_MSA
, features
)) {
2056 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2057 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2058 s390_fill_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2059 s390_fill_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2060 s390_fill_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2062 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2063 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2065 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2066 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2067 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2068 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2069 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2071 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2072 s390_fill_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2074 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2075 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2077 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2080 static int kvm_to_feat
[][2] = {
2081 { KVM_S390_VM_CPU_FEAT_ESOP
, S390_FEAT_ESOP
},
2082 { KVM_S390_VM_CPU_FEAT_SIEF2
, S390_FEAT_SIE_F2
},
2083 { KVM_S390_VM_CPU_FEAT_64BSCAO
, S390_FEAT_SIE_64BSCAO
},
2084 { KVM_S390_VM_CPU_FEAT_SIIF
, S390_FEAT_SIE_SIIF
},
2085 { KVM_S390_VM_CPU_FEAT_GPERE
, S390_FEAT_SIE_GPERE
},
2086 { KVM_S390_VM_CPU_FEAT_GSLS
, S390_FEAT_SIE_GSLS
},
2087 { KVM_S390_VM_CPU_FEAT_IB
, S390_FEAT_SIE_IB
},
2088 { KVM_S390_VM_CPU_FEAT_CEI
, S390_FEAT_SIE_CEI
},
2089 { KVM_S390_VM_CPU_FEAT_IBS
, S390_FEAT_SIE_IBS
},
2090 { KVM_S390_VM_CPU_FEAT_SKEY
, S390_FEAT_SIE_SKEY
},
2091 { KVM_S390_VM_CPU_FEAT_CMMA
, S390_FEAT_SIE_CMMA
},
2092 { KVM_S390_VM_CPU_FEAT_PFMFI
, S390_FEAT_SIE_PFMFI
},
2093 { KVM_S390_VM_CPU_FEAT_SIGPIF
, S390_FEAT_SIE_SIGPIF
},
2094 { KVM_S390_VM_CPU_FEAT_KSS
, S390_FEAT_SIE_KSS
},
2097 static int query_cpu_feat(S390FeatBitmap features
)
2099 struct kvm_s390_vm_cpu_feat prop
;
2100 struct kvm_device_attr attr
= {
2101 .group
= KVM_S390_VM_CPU_MODEL
,
2102 .attr
= KVM_S390_VM_CPU_MACHINE_FEAT
,
2103 .addr
= (uint64_t) &prop
,
2108 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2113 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2114 if (test_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
)) {
2115 set_bit(kvm_to_feat
[i
][1], features
);
2121 static int configure_cpu_feat(const S390FeatBitmap features
)
2123 struct kvm_s390_vm_cpu_feat prop
= {};
2124 struct kvm_device_attr attr
= {
2125 .group
= KVM_S390_VM_CPU_MODEL
,
2126 .attr
= KVM_S390_VM_CPU_PROCESSOR_FEAT
,
2127 .addr
= (uint64_t) &prop
,
2131 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2132 if (test_bit(kvm_to_feat
[i
][1], features
)) {
2133 set_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
);
2136 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2139 bool kvm_s390_cpu_models_supported(void)
2141 if (!cpu_model_allowed()) {
2142 /* compatibility machines interfere with the cpu model */
2145 return kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2146 KVM_S390_VM_CPU_MACHINE
) &&
2147 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2148 KVM_S390_VM_CPU_PROCESSOR
) &&
2149 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2150 KVM_S390_VM_CPU_MACHINE_FEAT
) &&
2151 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2152 KVM_S390_VM_CPU_PROCESSOR_FEAT
) &&
2153 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2154 KVM_S390_VM_CPU_MACHINE_SUBFUNC
);
2157 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
)
2159 struct kvm_s390_vm_cpu_machine prop
= {};
2160 struct kvm_device_attr attr
= {
2161 .group
= KVM_S390_VM_CPU_MODEL
,
2162 .attr
= KVM_S390_VM_CPU_MACHINE
,
2163 .addr
= (uint64_t) &prop
,
2165 uint16_t unblocked_ibc
= 0, cpu_type
= 0;
2168 memset(model
, 0, sizeof(*model
));
2170 if (!kvm_s390_cpu_models_supported()) {
2171 error_setg(errp
, "KVM doesn't support CPU models");
2175 /* query the basic cpu model properties */
2176 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2178 error_setg(errp
, "KVM: Error querying host CPU model: %d", rc
);
2182 cpu_type
= cpuid_type(prop
.cpuid
);
2183 if (has_ibc(prop
.ibc
)) {
2184 model
->lowest_ibc
= lowest_ibc(prop
.ibc
);
2185 unblocked_ibc
= unblocked_ibc(prop
.ibc
);
2187 model
->cpu_id
= cpuid_id(prop
.cpuid
);
2188 model
->cpu_id_format
= cpuid_format(prop
.cpuid
);
2189 model
->cpu_ver
= 0xff;
2191 /* get supported cpu features indicated via STFL(E) */
2192 s390_add_from_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2193 (uint8_t *) prop
.fac_mask
);
2194 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2195 if (test_bit(S390_FEAT_STFLE
, model
->features
)) {
2196 set_bit(S390_FEAT_DAT_ENH_2
, model
->features
);
2198 /* get supported cpu features indicated e.g. via SCLP */
2199 rc
= query_cpu_feat(model
->features
);
2201 error_setg(errp
, "KVM: Error querying CPU features: %d", rc
);
2204 /* get supported cpu subfunctions indicated via query / test bit */
2205 rc
= query_cpu_subfunc(model
->features
);
2207 error_setg(errp
, "KVM: Error querying CPU subfunctions: %d", rc
);
2211 /* PTFF subfunctions might be indicated although kernel support missing */
2212 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH
, model
->features
)) {
2213 clear_bit(S390_FEAT_PTFF_QSIE
, model
->features
);
2214 clear_bit(S390_FEAT_PTFF_QTOUE
, model
->features
);
2215 clear_bit(S390_FEAT_PTFF_STOE
, model
->features
);
2216 clear_bit(S390_FEAT_PTFF_STOUE
, model
->features
);
2219 /* with cpu model support, CMM is only indicated if really available */
2220 if (kvm_s390_cmma_available()) {
2221 set_bit(S390_FEAT_CMM
, model
->features
);
2223 /* no cmm -> no cmm nt */
2224 clear_bit(S390_FEAT_CMM_NT
, model
->features
);
2227 /* bpb needs kernel support for migration, VSIE and reset */
2228 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_BPB
)) {
2229 clear_bit(S390_FEAT_BPB
, model
->features
);
2232 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2233 if (pci_available
) {
2234 set_bit(S390_FEAT_ZPCI
, model
->features
);
2236 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION
, model
->features
);
2238 if (s390_known_cpu_type(cpu_type
)) {
2239 /* we want the exact model, even if some features are missing */
2240 model
->def
= s390_find_cpu_def(cpu_type
, ibc_gen(unblocked_ibc
),
2241 ibc_ec_ga(unblocked_ibc
), NULL
);
2243 /* model unknown, e.g. too new - search using features */
2244 model
->def
= s390_find_cpu_def(0, ibc_gen(unblocked_ibc
),
2245 ibc_ec_ga(unblocked_ibc
),
2249 error_setg(errp
, "KVM: host CPU model could not be identified");
2252 /* strip of features that are not part of the maximum model */
2253 bitmap_and(model
->features
, model
->features
, model
->def
->full_feat
,
2257 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
2259 struct kvm_s390_vm_cpu_processor prop
= {
2262 struct kvm_device_attr attr
= {
2263 .group
= KVM_S390_VM_CPU_MODEL
,
2264 .attr
= KVM_S390_VM_CPU_PROCESSOR
,
2265 .addr
= (uint64_t) &prop
,
2270 /* compatibility handling if cpu models are disabled */
2271 if (kvm_s390_cmma_available()) {
2272 kvm_s390_enable_cmma();
2276 if (!kvm_s390_cpu_models_supported()) {
2277 error_setg(errp
, "KVM doesn't support CPU models");
2280 prop
.cpuid
= s390_cpuid_from_cpu_model(model
);
2281 prop
.ibc
= s390_ibc_from_cpu_model(model
);
2282 /* configure cpu features indicated via STFL(e) */
2283 s390_fill_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2284 (uint8_t *) prop
.fac_list
);
2285 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2287 error_setg(errp
, "KVM: Error configuring the CPU model: %d", rc
);
2290 /* configure cpu features indicated e.g. via SCLP */
2291 rc
= configure_cpu_feat(model
->features
);
2293 error_setg(errp
, "KVM: Error configuring CPU features: %d", rc
);
2296 /* configure cpu subfunctions indicated via query / test bit */
2297 rc
= configure_cpu_subfunc(model
->features
);
2299 error_setg(errp
, "KVM: Error configuring CPU subfunctions: %d", rc
);
2302 /* enable CMM via CMMA */
2303 if (test_bit(S390_FEAT_CMM
, model
->features
)) {
2304 kvm_s390_enable_cmma();
2308 void kvm_s390_restart_interrupt(S390CPU
*cpu
)
2310 struct kvm_s390_irq irq
= {
2311 .type
= KVM_S390_RESTART
,
2314 kvm_s390_vcpu_interrupt(cpu
, &irq
);
2317 void kvm_s390_stop_interrupt(S390CPU
*cpu
)
2319 struct kvm_s390_irq irq
= {
2320 .type
= KVM_S390_SIGP_STOP
,
2323 kvm_s390_vcpu_interrupt(cpu
, &irq
);