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 "sysemu/kvm_int.h"
32 #include "qapi/error.h"
33 #include "qemu/error-report.h"
34 #include "qemu/timer.h"
35 #include "qemu/units.h"
36 #include "qemu/main-loop.h"
37 #include "qemu/mmap-alloc.h"
39 #include "sysemu/sysemu.h"
40 #include "sysemu/hw_accel.h"
41 #include "sysemu/runstate.h"
42 #include "sysemu/device_tree.h"
43 #include "exec/gdbstub.h"
44 #include "exec/ram_addr.h"
46 #include "hw/s390x/s390-pci-inst.h"
47 #include "hw/s390x/s390-pci-bus.h"
48 #include "hw/s390x/ipl.h"
49 #include "hw/s390x/ebcdic.h"
50 #include "exec/memattrs.h"
51 #include "hw/s390x/s390-virtio-ccw.h"
52 #include "hw/s390x/s390-virtio-hcall.h"
58 #define DPRINTF(fmt, ...) do { \
60 fprintf(stderr, fmt, ## __VA_ARGS__); \
64 #define kvm_vm_check_mem_attr(s, attr) \
65 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
67 #define IPA0_DIAG 0x8300
68 #define IPA0_SIGP 0xae00
69 #define IPA0_B2 0xb200
70 #define IPA0_B9 0xb900
71 #define IPA0_EB 0xeb00
72 #define IPA0_E3 0xe300
74 #define PRIV_B2_SCLP_CALL 0x20
75 #define PRIV_B2_CSCH 0x30
76 #define PRIV_B2_HSCH 0x31
77 #define PRIV_B2_MSCH 0x32
78 #define PRIV_B2_SSCH 0x33
79 #define PRIV_B2_STSCH 0x34
80 #define PRIV_B2_TSCH 0x35
81 #define PRIV_B2_TPI 0x36
82 #define PRIV_B2_SAL 0x37
83 #define PRIV_B2_RSCH 0x38
84 #define PRIV_B2_STCRW 0x39
85 #define PRIV_B2_STCPS 0x3a
86 #define PRIV_B2_RCHP 0x3b
87 #define PRIV_B2_SCHM 0x3c
88 #define PRIV_B2_CHSC 0x5f
89 #define PRIV_B2_SIGA 0x74
90 #define PRIV_B2_XSCH 0x76
92 #define PRIV_EB_SQBS 0x8a
93 #define PRIV_EB_PCISTB 0xd0
94 #define PRIV_EB_SIC 0xd1
96 #define PRIV_B9_EQBS 0x9c
97 #define PRIV_B9_CLP 0xa0
98 #define PRIV_B9_PCISTG 0xd0
99 #define PRIV_B9_PCILG 0xd2
100 #define PRIV_B9_RPCIT 0xd3
102 #define PRIV_E3_MPCIFC 0xd0
103 #define PRIV_E3_STPCIFC 0xd4
105 #define DIAG_TIMEREVENT 0x288
106 #define DIAG_IPL 0x308
107 #define DIAG_KVM_HYPERCALL 0x500
108 #define DIAG_KVM_BREAKPOINT 0x501
110 #define ICPT_INSTRUCTION 0x04
111 #define ICPT_PROGRAM 0x08
112 #define ICPT_EXT_INT 0x14
113 #define ICPT_WAITPSW 0x1c
114 #define ICPT_SOFT_INTERCEPT 0x24
115 #define ICPT_CPU_STOP 0x28
116 #define ICPT_OPEREXC 0x2c
119 #define NR_LOCAL_IRQS 32
121 * Needs to be big enough to contain max_cpus emergency signals
122 * and in addition NR_LOCAL_IRQS interrupts
124 #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
125 (max_cpus + NR_LOCAL_IRQS))
127 * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
128 * as the dirty bitmap must be managed by bitops that take an int as
129 * position indicator. This would end at an unaligned address
130 * (0x7fffff00000). As future variants might provide larger pages
131 * and to make all addresses properly aligned, let us split at 4TB.
133 #define KVM_SLOT_MAX_BYTES (4UL * TiB)
135 static CPUWatchpoint hw_watchpoint
;
137 * We don't use a list because this structure is also used to transmit the
138 * hardware breakpoints to the kernel.
140 static struct kvm_hw_breakpoint
*hw_breakpoints
;
141 static int nb_hw_breakpoints
;
143 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
147 static int cap_sync_regs
;
148 static int cap_async_pf
;
149 static int cap_mem_op
;
150 static int cap_s390_irq
;
153 static int cap_hpage_1m
;
155 static int active_cmma
;
157 static void *legacy_s390_alloc(size_t size
, uint64_t *align
, bool shared
);
159 static int kvm_s390_query_mem_limit(uint64_t *memory_limit
)
161 struct kvm_device_attr attr
= {
162 .group
= KVM_S390_VM_MEM_CTRL
,
163 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
164 .addr
= (uint64_t) memory_limit
,
167 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
170 int kvm_s390_set_mem_limit(uint64_t new_limit
, uint64_t *hw_limit
)
174 struct kvm_device_attr attr
= {
175 .group
= KVM_S390_VM_MEM_CTRL
,
176 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
177 .addr
= (uint64_t) &new_limit
,
180 if (!kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
184 rc
= kvm_s390_query_mem_limit(hw_limit
);
187 } else if (*hw_limit
< new_limit
) {
191 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
194 int kvm_s390_cmma_active(void)
199 static bool kvm_s390_cmma_available(void)
201 static bool initialized
, value
;
205 value
= kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_ENABLE_CMMA
) &&
206 kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_CLR_CMMA
);
211 void kvm_s390_cmma_reset(void)
214 struct kvm_device_attr attr
= {
215 .group
= KVM_S390_VM_MEM_CTRL
,
216 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
219 if (!kvm_s390_cmma_active()) {
223 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
224 trace_kvm_clear_cmma(rc
);
227 static void kvm_s390_enable_cmma(void)
230 struct kvm_device_attr attr
= {
231 .group
= KVM_S390_VM_MEM_CTRL
,
232 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
236 warn_report("CMM will not be enabled because it is not "
237 "compatible with huge memory backings.");
240 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
242 trace_kvm_enable_cmma(rc
);
245 static void kvm_s390_set_attr(uint64_t attr
)
247 struct kvm_device_attr attribute
= {
248 .group
= KVM_S390_VM_CRYPTO
,
252 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
255 error_report("Failed to set crypto device attribute %lu: %s",
256 attr
, strerror(-ret
));
260 static void kvm_s390_init_aes_kw(void)
262 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
264 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
266 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
269 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
270 kvm_s390_set_attr(attr
);
274 static void kvm_s390_init_dea_kw(void)
276 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
278 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
280 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
283 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
284 kvm_s390_set_attr(attr
);
288 void kvm_s390_crypto_reset(void)
290 if (s390_has_feat(S390_FEAT_MSA_EXT_3
)) {
291 kvm_s390_init_aes_kw();
292 kvm_s390_init_dea_kw();
296 void kvm_s390_set_max_pagesize(uint64_t pagesize
, Error
**errp
)
298 if (pagesize
== 4 * KiB
) {
302 if (!hpage_1m_allowed()) {
303 error_setg(errp
, "This QEMU machine does not support huge page "
308 if (pagesize
!= 1 * MiB
) {
309 error_setg(errp
, "Memory backing with 2G pages was specified, "
310 "but KVM does not support this memory backing");
314 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_HPAGE_1M
, 0)) {
315 error_setg(errp
, "Memory backing with 1M pages was specified, "
316 "but KVM does not support this memory backing");
323 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
325 MachineClass
*mc
= MACHINE_GET_CLASS(ms
);
327 mc
->default_cpu_type
= S390_CPU_TYPE_NAME("host");
329 if (!kvm_check_extension(kvm_state
, KVM_CAP_DEVICE_CTRL
)) {
330 error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - "
331 "please use kernel 3.15 or newer");
335 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
336 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
337 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
338 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
340 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
341 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
342 phys_mem_set_alloc(legacy_s390_alloc
);
345 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
346 kvm_vm_enable_cap(s
, KVM_CAP_S390_VECTOR_REGISTERS
, 0);
347 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
349 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_RI
, 0) == 0) {
353 if (cpu_model_allowed()) {
354 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_GS
, 0) == 0) {
360 * The migration interface for ais was introduced with kernel 4.13
361 * but the capability itself had been active since 4.12. As migration
362 * support is considered necessary let's disable ais in the 2.10
365 /* kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0); */
367 kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES
);
371 int kvm_arch_irqchip_create(MachineState
*ms
, KVMState
*s
)
376 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
378 return cpu
->cpu_index
;
381 int kvm_arch_init_vcpu(CPUState
*cs
)
383 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
384 S390CPU
*cpu
= S390_CPU(cs
);
385 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
386 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus
));
390 int kvm_arch_destroy_vcpu(CPUState
*cs
)
392 S390CPU
*cpu
= S390_CPU(cs
);
394 g_free(cpu
->irqstate
);
395 cpu
->irqstate
= NULL
;
400 void kvm_s390_reset_vcpu(S390CPU
*cpu
)
402 CPUState
*cs
= CPU(cpu
);
404 /* The initial reset call is needed here to reset in-kernel
405 * vcpu data that we can't access directly from QEMU
406 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
407 * Before this ioctl cpu_synchronize_state() is called in common kvm
409 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
)) {
410 error_report("Initial CPU reset failed on CPU %i", cs
->cpu_index
);
414 static int can_sync_regs(CPUState
*cs
, int regs
)
416 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
419 int kvm_arch_put_registers(CPUState
*cs
, int level
)
421 S390CPU
*cpu
= S390_CPU(cs
);
422 CPUS390XState
*env
= &cpu
->env
;
423 struct kvm_sregs sregs
;
424 struct kvm_regs regs
;
425 struct kvm_fpu fpu
= {};
429 /* always save the PSW and the GPRS*/
430 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
431 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
433 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
434 for (i
= 0; i
< 16; i
++) {
435 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
436 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
439 for (i
= 0; i
< 16; i
++) {
440 regs
.gprs
[i
] = env
->regs
[i
];
442 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
448 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
449 for (i
= 0; i
< 32; i
++) {
450 cs
->kvm_run
->s
.regs
.vrs
[i
][0] = env
->vregs
[i
][0];
451 cs
->kvm_run
->s
.regs
.vrs
[i
][1] = env
->vregs
[i
][1];
453 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
454 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_VRS
;
455 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
456 for (i
= 0; i
< 16; i
++) {
457 cs
->kvm_run
->s
.regs
.fprs
[i
] = *get_freg(env
, i
);
459 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
460 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_FPRS
;
463 for (i
= 0; i
< 16; i
++) {
464 fpu
.fprs
[i
] = *get_freg(env
, i
);
468 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
474 /* Do we need to save more than that? */
475 if (level
== KVM_PUT_RUNTIME_STATE
) {
479 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
480 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
481 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
482 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
483 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
484 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
485 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
488 * These ONE_REGS are not protected by a capability. As they are only
489 * necessary for migration we just trace a possible error, but don't
490 * return with an error return code.
492 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
493 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
494 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
495 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
496 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
499 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
500 memcpy(cs
->kvm_run
->s
.regs
.riccb
, env
->riccb
, 64);
501 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_RICCB
;
504 /* pfault parameters */
505 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
506 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
507 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
508 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
509 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
510 } else if (cap_async_pf
) {
511 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
515 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
519 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
525 /* access registers and control registers*/
526 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
527 for (i
= 0; i
< 16; i
++) {
528 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
529 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
531 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
532 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
534 for (i
= 0; i
< 16; i
++) {
535 sregs
.acrs
[i
] = env
->aregs
[i
];
536 sregs
.crs
[i
] = env
->cregs
[i
];
538 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
544 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
545 memcpy(cs
->kvm_run
->s
.regs
.gscb
, env
->gscb
, 32);
546 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GSCB
;
549 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
550 cs
->kvm_run
->s
.regs
.bpbc
= env
->bpbc
;
551 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_BPBC
;
554 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
555 cs
->kvm_run
->s
.regs
.etoken
= env
->etoken
;
556 cs
->kvm_run
->s
.regs
.etoken_extension
= env
->etoken_extension
;
557 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ETOKEN
;
560 /* Finally the prefix */
561 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
562 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
563 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
565 /* prefix is only supported via sync regs */
570 int kvm_arch_get_registers(CPUState
*cs
)
572 S390CPU
*cpu
= S390_CPU(cs
);
573 CPUS390XState
*env
= &cpu
->env
;
574 struct kvm_sregs sregs
;
575 struct kvm_regs regs
;
580 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
581 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
584 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
585 for (i
= 0; i
< 16; i
++) {
586 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
589 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
593 for (i
= 0; i
< 16; i
++) {
594 env
->regs
[i
] = regs
.gprs
[i
];
598 /* The ACRS and CRS */
599 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
600 for (i
= 0; i
< 16; i
++) {
601 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
602 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
605 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
609 for (i
= 0; i
< 16; i
++) {
610 env
->aregs
[i
] = sregs
.acrs
[i
];
611 env
->cregs
[i
] = sregs
.crs
[i
];
615 /* Floating point and vector registers */
616 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
617 for (i
= 0; i
< 32; i
++) {
618 env
->vregs
[i
][0] = cs
->kvm_run
->s
.regs
.vrs
[i
][0];
619 env
->vregs
[i
][1] = cs
->kvm_run
->s
.regs
.vrs
[i
][1];
621 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
622 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
623 for (i
= 0; i
< 16; i
++) {
624 *get_freg(env
, i
) = cs
->kvm_run
->s
.regs
.fprs
[i
];
626 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
628 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
632 for (i
= 0; i
< 16; i
++) {
633 *get_freg(env
, i
) = fpu
.fprs
[i
];
639 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
640 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
643 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
644 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
645 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
646 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
647 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
648 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
651 * These ONE_REGS are not protected by a capability. As they are only
652 * necessary for migration we just trace a possible error, but don't
653 * return with an error return code.
655 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
656 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
657 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
658 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
659 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
662 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
663 memcpy(env
->riccb
, cs
->kvm_run
->s
.regs
.riccb
, 64);
666 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
667 memcpy(env
->gscb
, cs
->kvm_run
->s
.regs
.gscb
, 32);
670 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
671 env
->bpbc
= cs
->kvm_run
->s
.regs
.bpbc
;
674 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
675 env
->etoken
= cs
->kvm_run
->s
.regs
.etoken
;
676 env
->etoken_extension
= cs
->kvm_run
->s
.regs
.etoken_extension
;
679 /* pfault parameters */
680 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
681 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
682 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
683 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
684 } else if (cap_async_pf
) {
685 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
689 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
693 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
702 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
705 struct kvm_device_attr attr
= {
706 .group
= KVM_S390_VM_TOD
,
707 .attr
= KVM_S390_VM_TOD_LOW
,
708 .addr
= (uint64_t)tod_low
,
711 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
716 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
717 attr
.addr
= (uint64_t)tod_high
;
718 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
721 int kvm_s390_get_clock_ext(uint8_t *tod_high
, uint64_t *tod_low
)
724 struct kvm_s390_vm_tod_clock gtod
;
725 struct kvm_device_attr attr
= {
726 .group
= KVM_S390_VM_TOD
,
727 .attr
= KVM_S390_VM_TOD_EXT
,
728 .addr
= (uint64_t)>od
,
731 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
732 *tod_high
= gtod
.epoch_idx
;
738 int kvm_s390_set_clock(uint8_t tod_high
, uint64_t tod_low
)
741 struct kvm_device_attr attr
= {
742 .group
= KVM_S390_VM_TOD
,
743 .attr
= KVM_S390_VM_TOD_LOW
,
744 .addr
= (uint64_t)&tod_low
,
747 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
752 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
753 attr
.addr
= (uint64_t)&tod_high
;
754 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
757 int kvm_s390_set_clock_ext(uint8_t tod_high
, uint64_t tod_low
)
759 struct kvm_s390_vm_tod_clock gtod
= {
760 .epoch_idx
= tod_high
,
763 struct kvm_device_attr attr
= {
764 .group
= KVM_S390_VM_TOD
,
765 .attr
= KVM_S390_VM_TOD_EXT
,
766 .addr
= (uint64_t)>od
,
769 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
774 * @addr: the logical start address in guest memory
775 * @ar: the access register number
776 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
777 * @len: length that should be transferred
778 * @is_write: true = write, false = read
779 * Returns: 0 on success, non-zero if an exception or error occurred
781 * Use KVM ioctl to read/write from/to guest memory. An access exception
782 * is injected into the vCPU in case of translation errors.
784 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
785 int len
, bool is_write
)
787 struct kvm_s390_mem_op mem_op
= {
789 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
791 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
792 : KVM_S390_MEMOP_LOGICAL_READ
,
793 .buf
= (uint64_t)hostbuf
,
802 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
805 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
807 warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret
));
813 * Legacy layout for s390:
814 * Older S390 KVM requires the topmost vma of the RAM to be
815 * smaller than an system defined value, which is at least 256GB.
816 * Larger systems have larger values. We put the guest between
817 * the end of data segment (system break) and this value. We
818 * use 32GB as a base to have enough room for the system break
819 * to grow. We also have to use MAP parameters that avoid
820 * read-only mapping of guest pages.
822 static void *legacy_s390_alloc(size_t size
, uint64_t *align
, bool shared
)
827 /* we only support one allocation, which is enough for initial ram */
831 mem
= mmap((void *) 0x800000000ULL
, size
,
832 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
833 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
834 if (mem
== MAP_FAILED
) {
838 *align
= QEMU_VMALLOC_ALIGN
;
843 static uint8_t const *sw_bp_inst
;
844 static uint8_t sw_bp_ilen
;
846 static void determine_sw_breakpoint_instr(void)
848 /* DIAG 501 is used for sw breakpoints with old kernels */
849 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
850 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
851 static const uint8_t instr_0x0000
[] = {0x00, 0x00};
856 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_USER_INSTR0
, 0)) {
857 sw_bp_inst
= diag_501
;
858 sw_bp_ilen
= sizeof(diag_501
);
859 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
861 sw_bp_inst
= instr_0x0000
;
862 sw_bp_ilen
= sizeof(instr_0x0000
);
863 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
867 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
869 determine_sw_breakpoint_instr();
871 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
873 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)sw_bp_inst
, sw_bp_ilen
, 1)) {
879 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
883 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sw_bp_ilen
, 0)) {
885 } else if (memcmp(t
, sw_bp_inst
, sw_bp_ilen
)) {
887 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
895 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
900 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
901 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
902 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
903 return &hw_breakpoints
[n
];
910 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
914 if (find_hw_breakpoint(addr
, len
, type
)) {
918 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
920 if (!hw_breakpoints
) {
921 nb_hw_breakpoints
= 0;
922 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
925 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
928 if (!hw_breakpoints
) {
929 nb_hw_breakpoints
= 0;
933 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
934 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
935 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
942 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
943 target_ulong len
, int type
)
946 case GDB_BREAKPOINT_HW
:
949 case GDB_WATCHPOINT_WRITE
:
953 type
= KVM_HW_WP_WRITE
;
958 return insert_hw_breakpoint(addr
, len
, type
);
961 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
962 target_ulong len
, int type
)
965 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
972 if (nb_hw_breakpoints
> 0) {
974 * In order to trim the array, move the last element to the position to
975 * be removed - if necessary.
977 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
978 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
980 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
982 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
984 g_free(hw_breakpoints
);
985 hw_breakpoints
= NULL
;
991 void kvm_arch_remove_all_hw_breakpoints(void)
993 nb_hw_breakpoints
= 0;
994 g_free(hw_breakpoints
);
995 hw_breakpoints
= NULL
;
998 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
1002 if (nb_hw_breakpoints
> 0) {
1003 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
1004 dbg
->arch
.hw_bp
= hw_breakpoints
;
1006 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
1007 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
1008 hw_breakpoints
[i
].addr
);
1010 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
1012 dbg
->arch
.nr_hw_bp
= 0;
1013 dbg
->arch
.hw_bp
= NULL
;
1017 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
1021 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
1023 return MEMTXATTRS_UNSPECIFIED
;
1026 int kvm_arch_process_async_events(CPUState
*cs
)
1031 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
1032 struct kvm_s390_interrupt
*interrupt
)
1036 interrupt
->type
= irq
->type
;
1037 switch (irq
->type
) {
1038 case KVM_S390_INT_VIRTIO
:
1039 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1041 case KVM_S390_INT_PFAULT_INIT
:
1042 case KVM_S390_INT_PFAULT_DONE
:
1043 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
1045 case KVM_S390_PROGRAM_INT
:
1046 interrupt
->parm
= irq
->u
.pgm
.code
;
1048 case KVM_S390_SIGP_SET_PREFIX
:
1049 interrupt
->parm
= irq
->u
.prefix
.address
;
1051 case KVM_S390_INT_SERVICE
:
1052 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1055 interrupt
->parm
= irq
->u
.mchk
.cr14
;
1056 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
1058 case KVM_S390_INT_EXTERNAL_CALL
:
1059 interrupt
->parm
= irq
->u
.extcall
.code
;
1061 case KVM_S390_INT_EMERGENCY
:
1062 interrupt
->parm
= irq
->u
.emerg
.code
;
1064 case KVM_S390_SIGP_STOP
:
1065 case KVM_S390_RESTART
:
1066 break; /* These types have no parameters */
1067 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1068 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
1069 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
1070 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
1071 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
1080 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
1082 struct kvm_s390_interrupt kvmint
= {};
1085 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1087 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1091 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
1093 fprintf(stderr
, "KVM failed to inject interrupt\n");
1098 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
1100 CPUState
*cs
= CPU(cpu
);
1104 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
1108 error_report("KVM failed to inject interrupt %llx", irq
->type
);
1112 inject_vcpu_irq_legacy(cs
, irq
);
1115 void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq
*irq
)
1117 struct kvm_s390_interrupt kvmint
= {};
1120 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1122 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1126 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
1128 fprintf(stderr
, "KVM failed to inject interrupt\n");
1133 void kvm_s390_program_interrupt(S390CPU
*cpu
, uint16_t code
)
1135 struct kvm_s390_irq irq
= {
1136 .type
= KVM_S390_PROGRAM_INT
,
1139 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
1141 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1144 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
1146 struct kvm_s390_irq irq
= {
1147 .type
= KVM_S390_PROGRAM_INT
,
1149 .u
.pgm
.trans_exc_code
= te_code
,
1150 .u
.pgm
.exc_access_id
= te_code
& 3,
1153 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1156 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
1159 CPUS390XState
*env
= &cpu
->env
;
1164 sccb
= env
->regs
[ipbh0
& 0xf];
1165 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
1167 r
= sclp_service_call(env
, sccb
, code
);
1169 kvm_s390_program_interrupt(cpu
, -r
);
1177 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1179 CPUS390XState
*env
= &cpu
->env
;
1181 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
1185 ioinst_handle_xsch(cpu
, env
->regs
[1], RA_IGNORED
);
1188 ioinst_handle_csch(cpu
, env
->regs
[1], RA_IGNORED
);
1191 ioinst_handle_hsch(cpu
, env
->regs
[1], RA_IGNORED
);
1194 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1197 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1200 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1203 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1206 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1207 fprintf(stderr
, "Spurious tsch intercept\n");
1210 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1213 /* This should have been handled by kvm already. */
1214 fprintf(stderr
, "Spurious tpi intercept\n");
1217 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1218 run
->s390_sieic
.ipb
, RA_IGNORED
);
1221 ioinst_handle_rsch(cpu
, env
->regs
[1], RA_IGNORED
);
1224 ioinst_handle_rchp(cpu
, env
->regs
[1], RA_IGNORED
);
1227 /* We do not provide this instruction, it is suppressed. */
1230 ioinst_handle_sal(cpu
, env
->regs
[1], RA_IGNORED
);
1233 /* Not provided, set CC = 3 for subchannel not operational */
1236 case PRIV_B2_SCLP_CALL
:
1237 rc
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
1241 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1248 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1251 CPUS390XState
*env
= &cpu
->env
;
1252 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1253 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1254 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1255 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1257 if (disp2
& 0x80000) {
1258 disp2
+= 0xfff00000;
1264 return (base2
? env
->regs
[base2
] : 0) +
1265 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1268 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1271 CPUS390XState
*env
= &cpu
->env
;
1272 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1273 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1274 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1276 if (disp2
& 0x80000) {
1277 disp2
+= 0xfff00000;
1283 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1286 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1288 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1290 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1291 return clp_service_call(cpu
, r2
, RA_IGNORED
);
1297 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1299 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1300 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1302 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1303 return pcilg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1309 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1311 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1312 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1314 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1315 return pcistg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1321 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1323 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1327 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1328 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1330 return stpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1336 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1338 CPUS390XState
*env
= &cpu
->env
;
1339 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1340 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1345 mode
= env
->regs
[r1
] & 0xffff;
1346 isc
= (env
->regs
[r3
] >> 27) & 0x7;
1347 r
= css_do_sic(env
, isc
, mode
);
1349 kvm_s390_program_interrupt(cpu
, -r
);
1355 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1357 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1358 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1360 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1361 return rpcit_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1367 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1369 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1370 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1374 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1375 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1377 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
, RA_IGNORED
);
1383 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1385 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1389 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1390 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1392 return mpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1398 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1404 r
= kvm_clp_service_call(cpu
, run
);
1406 case PRIV_B9_PCISTG
:
1407 r
= kvm_pcistg_service_call(cpu
, run
);
1410 r
= kvm_pcilg_service_call(cpu
, run
);
1413 r
= kvm_rpcit_service_call(cpu
, run
);
1416 /* just inject exception */
1421 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1428 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1433 case PRIV_EB_PCISTB
:
1434 r
= kvm_pcistb_service_call(cpu
, run
);
1437 r
= kvm_sic_service_call(cpu
, run
);
1440 /* just inject exception */
1445 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1452 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1457 case PRIV_E3_MPCIFC
:
1458 r
= kvm_mpcifc_service_call(cpu
, run
);
1460 case PRIV_E3_STPCIFC
:
1461 r
= kvm_stpcifc_service_call(cpu
, run
);
1465 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1472 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1474 CPUS390XState
*env
= &cpu
->env
;
1477 ret
= s390_virtio_hypercall(env
);
1478 if (ret
== -EINVAL
) {
1479 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1486 static void kvm_handle_diag_288(S390CPU
*cpu
, struct kvm_run
*run
)
1491 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1492 r3
= run
->s390_sieic
.ipa
& 0x000f;
1493 rc
= handle_diag_288(&cpu
->env
, r1
, r3
);
1495 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1499 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1503 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1504 r3
= run
->s390_sieic
.ipa
& 0x000f;
1505 handle_diag_308(&cpu
->env
, r1
, r3
, RA_IGNORED
);
1508 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1510 CPUS390XState
*env
= &cpu
->env
;
1513 pc
= env
->psw
.addr
- sw_bp_ilen
;
1514 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1522 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1524 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1530 * For any diagnose call we support, bits 48-63 of the resulting
1531 * address specify the function code; the remainder is ignored.
1533 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1534 switch (func_code
) {
1535 case DIAG_TIMEREVENT
:
1536 kvm_handle_diag_288(cpu
, run
);
1539 kvm_handle_diag_308(cpu
, run
);
1541 case DIAG_KVM_HYPERCALL
:
1542 r
= handle_hypercall(cpu
, run
);
1544 case DIAG_KVM_BREAKPOINT
:
1545 r
= handle_sw_breakpoint(cpu
, run
);
1548 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1549 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1556 static int kvm_s390_handle_sigp(S390CPU
*cpu
, uint8_t ipa1
, uint32_t ipb
)
1558 CPUS390XState
*env
= &cpu
->env
;
1559 const uint8_t r1
= ipa1
>> 4;
1560 const uint8_t r3
= ipa1
& 0x0f;
1564 /* get order code */
1565 order
= decode_basedisp_rs(env
, ipb
, NULL
) & SIGP_ORDER_MASK
;
1567 ret
= handle_sigp(env
, order
, r1
, r3
);
1572 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1574 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1575 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1578 DPRINTF("handle_instruction 0x%x 0x%x\n",
1579 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1582 r
= handle_b2(cpu
, run
, ipa1
);
1585 r
= handle_b9(cpu
, run
, ipa1
);
1588 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1591 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1594 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1597 r
= kvm_s390_handle_sigp(cpu
, ipa1
, run
->s390_sieic
.ipb
);
1603 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1609 static void unmanageable_intercept(S390CPU
*cpu
, S390CrashReason reason
,
1612 CPUState
*cs
= CPU(cpu
);
1615 cpu
->env
.crash_reason
= reason
;
1616 qemu_system_guest_panicked(cpu_get_crash_info(cs
));
1619 /* try to detect pgm check loops */
1620 static int handle_oper_loop(S390CPU
*cpu
, struct kvm_run
*run
)
1622 CPUState
*cs
= CPU(cpu
);
1625 newpsw
.mask
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1626 offsetof(LowCore
, program_new_psw
));
1627 newpsw
.addr
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1628 offsetof(LowCore
, program_new_psw
) + 8);
1629 oldpsw
.mask
= run
->psw_mask
;
1630 oldpsw
.addr
= run
->psw_addr
;
1632 * Avoid endless loops of operation exceptions, if the pgm new
1633 * PSW will cause a new operation exception.
1634 * The heuristic checks if the pgm new psw is within 6 bytes before
1635 * the faulting psw address (with same DAT, AS settings) and the
1636 * new psw is not a wait psw and the fault was not triggered by
1637 * problem state. In that case go into crashed state.
1640 if (oldpsw
.addr
- newpsw
.addr
<= 6 &&
1641 !(newpsw
.mask
& PSW_MASK_WAIT
) &&
1642 !(oldpsw
.mask
& PSW_MASK_PSTATE
) &&
1643 (newpsw
.mask
& PSW_MASK_ASC
) == (oldpsw
.mask
& PSW_MASK_ASC
) &&
1644 (newpsw
.mask
& PSW_MASK_DAT
) == (oldpsw
.mask
& PSW_MASK_DAT
)) {
1645 unmanageable_intercept(cpu
, S390_CRASH_REASON_OPINT_LOOP
,
1646 offsetof(LowCore
, program_new_psw
));
1652 static int handle_intercept(S390CPU
*cpu
)
1654 CPUState
*cs
= CPU(cpu
);
1655 struct kvm_run
*run
= cs
->kvm_run
;
1656 int icpt_code
= run
->s390_sieic
.icptcode
;
1659 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1660 (long)cs
->kvm_run
->psw_addr
);
1661 switch (icpt_code
) {
1662 case ICPT_INSTRUCTION
:
1663 r
= handle_instruction(cpu
, run
);
1666 unmanageable_intercept(cpu
, S390_CRASH_REASON_PGMINT_LOOP
,
1667 offsetof(LowCore
, program_new_psw
));
1671 unmanageable_intercept(cpu
, S390_CRASH_REASON_EXTINT_LOOP
,
1672 offsetof(LowCore
, external_new_psw
));
1676 /* disabled wait, since enabled wait is handled in kernel */
1677 s390_handle_wait(cpu
);
1681 do_stop_interrupt(&cpu
->env
);
1685 /* check for break points */
1686 r
= handle_sw_breakpoint(cpu
, run
);
1688 /* Then check for potential pgm check loops */
1689 r
= handle_oper_loop(cpu
, run
);
1691 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1695 case ICPT_SOFT_INTERCEPT
:
1696 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1700 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1704 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1712 static int handle_tsch(S390CPU
*cpu
)
1714 CPUState
*cs
= CPU(cpu
);
1715 struct kvm_run
*run
= cs
->kvm_run
;
1718 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
,
1723 * If an I/O interrupt had been dequeued, we have to reinject it.
1725 if (run
->s390_tsch
.dequeued
) {
1726 s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1727 run
->s390_tsch
.subchannel_nr
,
1728 run
->s390_tsch
.io_int_parm
,
1729 run
->s390_tsch
.io_int_word
);
1736 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
1741 if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
1744 /* Shift the stack of Extended Names to prepare for our own data */
1745 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
1746 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
1747 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1748 * assumed it's not capable of managing Extended Names for lower levels.
1750 for (del
= 1; del
< sysib
.count
; del
++) {
1751 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
1755 if (del
< sysib
.count
) {
1756 memset(sysib
.ext_names
[del
], 0,
1757 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
1759 /* Insert short machine name in EBCDIC, padded with blanks */
1761 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
1762 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
1763 strlen(qemu_name
)));
1765 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
1766 memset(sysib
.ext_names
[0], 0, sizeof(sysib
.ext_names
[0]));
1767 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1768 * considered by s390 as not capable of providing any Extended Name.
1769 * Therefore if no name was specified on qemu invocation, we go with the
1770 * same "KVMguest" default, which KVM has filled into short name field.
1773 strncpy((char *)sysib
.ext_names
[0], qemu_name
,
1774 sizeof(sysib
.ext_names
[0]));
1776 strcpy((char *)sysib
.ext_names
[0], "KVMguest");
1779 memcpy(sysib
.vm
[0].uuid
, &qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
1781 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
1784 static int handle_stsi(S390CPU
*cpu
)
1786 CPUState
*cs
= CPU(cpu
);
1787 struct kvm_run
*run
= cs
->kvm_run
;
1789 switch (run
->s390_stsi
.fc
) {
1791 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
1794 /* Only sysib 3.2.2 needs post-handling for now. */
1795 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
1802 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1804 CPUState
*cs
= CPU(cpu
);
1805 struct kvm_run
*run
= cs
->kvm_run
;
1808 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1810 switch (arch_info
->type
) {
1811 case KVM_HW_WP_WRITE
:
1812 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1813 cs
->watchpoint_hit
= &hw_watchpoint
;
1814 hw_watchpoint
.vaddr
= arch_info
->addr
;
1815 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1820 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1824 case KVM_SINGLESTEP
:
1825 if (cs
->singlestep_enabled
) {
1836 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1838 S390CPU
*cpu
= S390_CPU(cs
);
1841 qemu_mutex_lock_iothread();
1843 kvm_cpu_synchronize_state(cs
);
1845 switch (run
->exit_reason
) {
1846 case KVM_EXIT_S390_SIEIC
:
1847 ret
= handle_intercept(cpu
);
1849 case KVM_EXIT_S390_RESET
:
1850 s390_ipl_reset_request(cs
, S390_RESET_REIPL
);
1852 case KVM_EXIT_S390_TSCH
:
1853 ret
= handle_tsch(cpu
);
1855 case KVM_EXIT_S390_STSI
:
1856 ret
= handle_stsi(cpu
);
1858 case KVM_EXIT_DEBUG
:
1859 ret
= kvm_arch_handle_debug_exit(cpu
);
1862 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
1865 qemu_mutex_unlock_iothread();
1868 ret
= EXCP_INTERRUPT
;
1873 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
1878 void kvm_s390_enable_css_support(S390CPU
*cpu
)
1882 /* Activate host kernel channel subsystem support. */
1883 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
1887 void kvm_arch_init_irq_routing(KVMState
*s
)
1890 * Note that while irqchip capabilities generally imply that cpustates
1891 * are handled in-kernel, it is not true for s390 (yet); therefore, we
1892 * have to override the common code kvm_halt_in_kernel_allowed setting.
1894 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
1895 kvm_gsi_routing_allowed
= true;
1896 kvm_halt_in_kernel_allowed
= false;
1900 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
1901 int vq
, bool assign
)
1903 struct kvm_ioeventfd kick
= {
1904 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
1905 KVM_IOEVENTFD_FLAG_DATAMATCH
,
1906 .fd
= event_notifier_get_fd(notifier
),
1911 trace_kvm_assign_subch_ioeventfd(kick
.fd
, kick
.addr
, assign
,
1913 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
1917 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
1919 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
1922 int kvm_s390_get_ri(void)
1927 int kvm_s390_get_gs(void)
1932 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
1934 struct kvm_mp_state mp_state
= {};
1937 /* the kvm part might not have been initialized yet */
1938 if (CPU(cpu
)->kvm_state
== NULL
) {
1942 switch (cpu_state
) {
1943 case S390_CPU_STATE_STOPPED
:
1944 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
1946 case S390_CPU_STATE_CHECK_STOP
:
1947 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
1949 case S390_CPU_STATE_OPERATING
:
1950 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
1952 case S390_CPU_STATE_LOAD
:
1953 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
1956 error_report("Requested CPU state is not a valid S390 CPU state: %u",
1961 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
1963 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
1970 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
1972 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
1973 struct kvm_s390_irq_state irq_state
= {
1974 .buf
= (uint64_t) cpu
->irqstate
,
1975 .len
= VCPU_IRQ_BUF_SIZE(max_cpus
),
1977 CPUState
*cs
= CPU(cpu
);
1980 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
1984 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
1986 cpu
->irqstate_saved_size
= 0;
1987 error_report("Migration of interrupt state failed");
1991 cpu
->irqstate_saved_size
= bytes
;
1994 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
1996 CPUState
*cs
= CPU(cpu
);
1997 struct kvm_s390_irq_state irq_state
= {
1998 .buf
= (uint64_t) cpu
->irqstate
,
1999 .len
= cpu
->irqstate_saved_size
,
2003 if (cpu
->irqstate_saved_size
== 0) {
2007 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2011 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
2013 error_report("Setting interrupt state failed %d", r
);
2018 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2019 uint64_t address
, uint32_t data
, PCIDevice
*dev
)
2021 S390PCIBusDevice
*pbdev
;
2022 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2025 DPRINTF("add_msi_route no pci device\n");
2029 pbdev
= s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev
)->id
);
2031 DPRINTF("add_msi_route no zpci device\n");
2035 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2037 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2038 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2039 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2040 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
+ vec
;
2041 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;
2045 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry
*route
,
2046 int vector
, PCIDevice
*dev
)
2051 int kvm_arch_release_virq_post(int virq
)
2056 int kvm_arch_msi_data_to_gsi(uint32_t data
)
2061 static int query_cpu_subfunc(S390FeatBitmap features
)
2063 struct kvm_s390_vm_cpu_subfunc prop
;
2064 struct kvm_device_attr attr
= {
2065 .group
= KVM_S390_VM_CPU_MODEL
,
2066 .attr
= KVM_S390_VM_CPU_MACHINE_SUBFUNC
,
2067 .addr
= (uint64_t) &prop
,
2071 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2077 * We're going to add all subfunctions now, if the corresponding feature
2078 * is available that unlocks the query functions.
2080 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2081 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2082 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2084 if (test_bit(S390_FEAT_MSA
, features
)) {
2085 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2086 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2087 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2088 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2089 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2091 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2092 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2094 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2095 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2096 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2097 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2098 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2100 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2101 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2103 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2104 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2106 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2107 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2109 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2110 s390_add_from_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2112 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2113 s390_add_from_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2118 static int configure_cpu_subfunc(const S390FeatBitmap features
)
2120 struct kvm_s390_vm_cpu_subfunc prop
= {};
2121 struct kvm_device_attr attr
= {
2122 .group
= KVM_S390_VM_CPU_MODEL
,
2123 .attr
= KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
,
2124 .addr
= (uint64_t) &prop
,
2127 if (!kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2128 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
)) {
2129 /* hardware support might be missing, IBC will handle most of this */
2133 s390_fill_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2134 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2135 s390_fill_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2137 if (test_bit(S390_FEAT_MSA
, features
)) {
2138 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2139 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2140 s390_fill_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2141 s390_fill_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2142 s390_fill_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2144 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2145 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2147 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2148 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2149 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2150 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2151 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2153 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2154 s390_fill_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2156 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2157 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2159 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2160 s390_fill_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2162 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2163 s390_fill_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2165 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2166 s390_fill_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2168 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2171 static int kvm_to_feat
[][2] = {
2172 { KVM_S390_VM_CPU_FEAT_ESOP
, S390_FEAT_ESOP
},
2173 { KVM_S390_VM_CPU_FEAT_SIEF2
, S390_FEAT_SIE_F2
},
2174 { KVM_S390_VM_CPU_FEAT_64BSCAO
, S390_FEAT_SIE_64BSCAO
},
2175 { KVM_S390_VM_CPU_FEAT_SIIF
, S390_FEAT_SIE_SIIF
},
2176 { KVM_S390_VM_CPU_FEAT_GPERE
, S390_FEAT_SIE_GPERE
},
2177 { KVM_S390_VM_CPU_FEAT_GSLS
, S390_FEAT_SIE_GSLS
},
2178 { KVM_S390_VM_CPU_FEAT_IB
, S390_FEAT_SIE_IB
},
2179 { KVM_S390_VM_CPU_FEAT_CEI
, S390_FEAT_SIE_CEI
},
2180 { KVM_S390_VM_CPU_FEAT_IBS
, S390_FEAT_SIE_IBS
},
2181 { KVM_S390_VM_CPU_FEAT_SKEY
, S390_FEAT_SIE_SKEY
},
2182 { KVM_S390_VM_CPU_FEAT_CMMA
, S390_FEAT_SIE_CMMA
},
2183 { KVM_S390_VM_CPU_FEAT_PFMFI
, S390_FEAT_SIE_PFMFI
},
2184 { KVM_S390_VM_CPU_FEAT_SIGPIF
, S390_FEAT_SIE_SIGPIF
},
2185 { KVM_S390_VM_CPU_FEAT_KSS
, S390_FEAT_SIE_KSS
},
2188 static int query_cpu_feat(S390FeatBitmap features
)
2190 struct kvm_s390_vm_cpu_feat prop
;
2191 struct kvm_device_attr attr
= {
2192 .group
= KVM_S390_VM_CPU_MODEL
,
2193 .attr
= KVM_S390_VM_CPU_MACHINE_FEAT
,
2194 .addr
= (uint64_t) &prop
,
2199 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2204 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2205 if (test_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
)) {
2206 set_bit(kvm_to_feat
[i
][1], features
);
2212 static int configure_cpu_feat(const S390FeatBitmap features
)
2214 struct kvm_s390_vm_cpu_feat prop
= {};
2215 struct kvm_device_attr attr
= {
2216 .group
= KVM_S390_VM_CPU_MODEL
,
2217 .attr
= KVM_S390_VM_CPU_PROCESSOR_FEAT
,
2218 .addr
= (uint64_t) &prop
,
2222 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2223 if (test_bit(kvm_to_feat
[i
][1], features
)) {
2224 set_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
);
2227 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2230 bool kvm_s390_cpu_models_supported(void)
2232 if (!cpu_model_allowed()) {
2233 /* compatibility machines interfere with the cpu model */
2236 return kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2237 KVM_S390_VM_CPU_MACHINE
) &&
2238 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2239 KVM_S390_VM_CPU_PROCESSOR
) &&
2240 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2241 KVM_S390_VM_CPU_MACHINE_FEAT
) &&
2242 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2243 KVM_S390_VM_CPU_PROCESSOR_FEAT
) &&
2244 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2245 KVM_S390_VM_CPU_MACHINE_SUBFUNC
);
2248 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
)
2250 struct kvm_s390_vm_cpu_machine prop
= {};
2251 struct kvm_device_attr attr
= {
2252 .group
= KVM_S390_VM_CPU_MODEL
,
2253 .attr
= KVM_S390_VM_CPU_MACHINE
,
2254 .addr
= (uint64_t) &prop
,
2256 uint16_t unblocked_ibc
= 0, cpu_type
= 0;
2259 memset(model
, 0, sizeof(*model
));
2261 if (!kvm_s390_cpu_models_supported()) {
2262 error_setg(errp
, "KVM doesn't support CPU models");
2266 /* query the basic cpu model properties */
2267 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2269 error_setg(errp
, "KVM: Error querying host CPU model: %d", rc
);
2273 cpu_type
= cpuid_type(prop
.cpuid
);
2274 if (has_ibc(prop
.ibc
)) {
2275 model
->lowest_ibc
= lowest_ibc(prop
.ibc
);
2276 unblocked_ibc
= unblocked_ibc(prop
.ibc
);
2278 model
->cpu_id
= cpuid_id(prop
.cpuid
);
2279 model
->cpu_id_format
= cpuid_format(prop
.cpuid
);
2280 model
->cpu_ver
= 0xff;
2282 /* get supported cpu features indicated via STFL(E) */
2283 s390_add_from_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2284 (uint8_t *) prop
.fac_mask
);
2285 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2286 if (test_bit(S390_FEAT_STFLE
, model
->features
)) {
2287 set_bit(S390_FEAT_DAT_ENH_2
, model
->features
);
2289 /* get supported cpu features indicated e.g. via SCLP */
2290 rc
= query_cpu_feat(model
->features
);
2292 error_setg(errp
, "KVM: Error querying CPU features: %d", rc
);
2295 /* get supported cpu subfunctions indicated via query / test bit */
2296 rc
= query_cpu_subfunc(model
->features
);
2298 error_setg(errp
, "KVM: Error querying CPU subfunctions: %d", rc
);
2302 /* PTFF subfunctions might be indicated although kernel support missing */
2303 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH
, model
->features
)) {
2304 clear_bit(S390_FEAT_PTFF_QSIE
, model
->features
);
2305 clear_bit(S390_FEAT_PTFF_QTOUE
, model
->features
);
2306 clear_bit(S390_FEAT_PTFF_STOE
, model
->features
);
2307 clear_bit(S390_FEAT_PTFF_STOUE
, model
->features
);
2310 /* with cpu model support, CMM is only indicated if really available */
2311 if (kvm_s390_cmma_available()) {
2312 set_bit(S390_FEAT_CMM
, model
->features
);
2314 /* no cmm -> no cmm nt */
2315 clear_bit(S390_FEAT_CMM_NT
, model
->features
);
2318 /* bpb needs kernel support for migration, VSIE and reset */
2319 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_BPB
)) {
2320 clear_bit(S390_FEAT_BPB
, model
->features
);
2323 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2324 set_bit(S390_FEAT_ZPCI
, model
->features
);
2325 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION
, model
->features
);
2327 if (s390_known_cpu_type(cpu_type
)) {
2328 /* we want the exact model, even if some features are missing */
2329 model
->def
= s390_find_cpu_def(cpu_type
, ibc_gen(unblocked_ibc
),
2330 ibc_ec_ga(unblocked_ibc
), NULL
);
2332 /* model unknown, e.g. too new - search using features */
2333 model
->def
= s390_find_cpu_def(0, ibc_gen(unblocked_ibc
),
2334 ibc_ec_ga(unblocked_ibc
),
2338 error_setg(errp
, "KVM: host CPU model could not be identified");
2341 /* for now, we can only provide the AP feature with HW support */
2342 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
,
2343 KVM_S390_VM_CRYPTO_ENABLE_APIE
)) {
2344 set_bit(S390_FEAT_AP
, model
->features
);
2346 /* strip of features that are not part of the maximum model */
2347 bitmap_and(model
->features
, model
->features
, model
->def
->full_feat
,
2351 static void kvm_s390_configure_apie(bool interpret
)
2353 uint64_t attr
= interpret
? KVM_S390_VM_CRYPTO_ENABLE_APIE
:
2354 KVM_S390_VM_CRYPTO_DISABLE_APIE
;
2356 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
2357 kvm_s390_set_attr(attr
);
2361 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
2363 struct kvm_s390_vm_cpu_processor prop
= {
2366 struct kvm_device_attr attr
= {
2367 .group
= KVM_S390_VM_CPU_MODEL
,
2368 .attr
= KVM_S390_VM_CPU_PROCESSOR
,
2369 .addr
= (uint64_t) &prop
,
2374 /* compatibility handling if cpu models are disabled */
2375 if (kvm_s390_cmma_available()) {
2376 kvm_s390_enable_cmma();
2380 if (!kvm_s390_cpu_models_supported()) {
2381 error_setg(errp
, "KVM doesn't support CPU models");
2384 prop
.cpuid
= s390_cpuid_from_cpu_model(model
);
2385 prop
.ibc
= s390_ibc_from_cpu_model(model
);
2386 /* configure cpu features indicated via STFL(e) */
2387 s390_fill_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2388 (uint8_t *) prop
.fac_list
);
2389 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2391 error_setg(errp
, "KVM: Error configuring the CPU model: %d", rc
);
2394 /* configure cpu features indicated e.g. via SCLP */
2395 rc
= configure_cpu_feat(model
->features
);
2397 error_setg(errp
, "KVM: Error configuring CPU features: %d", rc
);
2400 /* configure cpu subfunctions indicated via query / test bit */
2401 rc
= configure_cpu_subfunc(model
->features
);
2403 error_setg(errp
, "KVM: Error configuring CPU subfunctions: %d", rc
);
2406 /* enable CMM via CMMA */
2407 if (test_bit(S390_FEAT_CMM
, model
->features
)) {
2408 kvm_s390_enable_cmma();
2411 if (test_bit(S390_FEAT_AP
, model
->features
)) {
2412 kvm_s390_configure_apie(true);
2416 void kvm_s390_restart_interrupt(S390CPU
*cpu
)
2418 struct kvm_s390_irq irq
= {
2419 .type
= KVM_S390_RESTART
,
2422 kvm_s390_vcpu_interrupt(cpu
, &irq
);
2425 void kvm_s390_stop_interrupt(S390CPU
*cpu
)
2427 struct kvm_s390_irq irq
= {
2428 .type
= KVM_S390_SIGP_STOP
,
2431 kvm_s390_vcpu_interrupt(cpu
, &irq
);