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 <sys/types.h>
25 #include <sys/ioctl.h>
28 #include <linux/kvm.h>
29 #include <asm/ptrace.h>
31 #include "qemu-common.h"
32 #include "qemu/timer.h"
33 #include "sysemu/sysemu.h"
34 #include "sysemu/kvm.h"
37 #include "sysemu/device_tree.h"
38 #include "qapi/qmp/qjson.h"
39 #include "monitor/monitor.h"
40 #include "exec/gdbstub.h"
41 #include "exec/address-spaces.h"
43 #include "qapi-event.h"
44 #include "hw/s390x/s390-pci-inst.h"
45 #include "hw/s390x/s390-pci-bus.h"
46 #include "hw/s390x/ipl.h"
47 #include "hw/s390x/ebcdic.h"
48 #include "exec/memattrs.h"
50 /* #define DEBUG_KVM */
53 #define DPRINTF(fmt, ...) \
54 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
56 #define DPRINTF(fmt, ...) \
60 #define kvm_vm_check_mem_attr(s, attr) \
61 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
63 #define IPA0_DIAG 0x8300
64 #define IPA0_SIGP 0xae00
65 #define IPA0_B2 0xb200
66 #define IPA0_B9 0xb900
67 #define IPA0_EB 0xeb00
68 #define IPA0_E3 0xe300
70 #define PRIV_B2_SCLP_CALL 0x20
71 #define PRIV_B2_CSCH 0x30
72 #define PRIV_B2_HSCH 0x31
73 #define PRIV_B2_MSCH 0x32
74 #define PRIV_B2_SSCH 0x33
75 #define PRIV_B2_STSCH 0x34
76 #define PRIV_B2_TSCH 0x35
77 #define PRIV_B2_TPI 0x36
78 #define PRIV_B2_SAL 0x37
79 #define PRIV_B2_RSCH 0x38
80 #define PRIV_B2_STCRW 0x39
81 #define PRIV_B2_STCPS 0x3a
82 #define PRIV_B2_RCHP 0x3b
83 #define PRIV_B2_SCHM 0x3c
84 #define PRIV_B2_CHSC 0x5f
85 #define PRIV_B2_SIGA 0x74
86 #define PRIV_B2_XSCH 0x76
88 #define PRIV_EB_SQBS 0x8a
89 #define PRIV_EB_PCISTB 0xd0
90 #define PRIV_EB_SIC 0xd1
92 #define PRIV_B9_EQBS 0x9c
93 #define PRIV_B9_CLP 0xa0
94 #define PRIV_B9_PCISTG 0xd0
95 #define PRIV_B9_PCILG 0xd2
96 #define PRIV_B9_RPCIT 0xd3
98 #define PRIV_E3_MPCIFC 0xd0
99 #define PRIV_E3_STPCIFC 0xd4
101 #define DIAG_IPL 0x308
102 #define DIAG_KVM_HYPERCALL 0x500
103 #define DIAG_KVM_BREAKPOINT 0x501
105 #define ICPT_INSTRUCTION 0x04
106 #define ICPT_PROGRAM 0x08
107 #define ICPT_EXT_INT 0x14
108 #define ICPT_WAITPSW 0x1c
109 #define ICPT_SOFT_INTERCEPT 0x24
110 #define ICPT_CPU_STOP 0x28
113 #define NR_LOCAL_IRQS 32
115 * Needs to be big enough to contain max_cpus emergency signals
116 * and in addition NR_LOCAL_IRQS interrupts
118 #define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
119 (max_cpus + NR_LOCAL_IRQS))
121 static CPUWatchpoint hw_watchpoint
;
123 * We don't use a list because this structure is also used to transmit the
124 * hardware breakpoints to the kernel.
126 static struct kvm_hw_breakpoint
*hw_breakpoints
;
127 static int nb_hw_breakpoints
;
129 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
133 static int cap_sync_regs
;
134 static int cap_async_pf
;
135 static int cap_mem_op
;
136 static int cap_s390_irq
;
138 static void *legacy_s390_alloc(size_t size
, uint64_t *align
);
140 static int kvm_s390_query_mem_limit(KVMState
*s
, uint64_t *memory_limit
)
142 struct kvm_device_attr attr
= {
143 .group
= KVM_S390_VM_MEM_CTRL
,
144 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
145 .addr
= (uint64_t) memory_limit
,
148 return kvm_vm_ioctl(s
, KVM_GET_DEVICE_ATTR
, &attr
);
151 int kvm_s390_set_mem_limit(KVMState
*s
, uint64_t new_limit
, uint64_t *hw_limit
)
155 struct kvm_device_attr attr
= {
156 .group
= KVM_S390_VM_MEM_CTRL
,
157 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
158 .addr
= (uint64_t) &new_limit
,
161 if (!kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
165 rc
= kvm_s390_query_mem_limit(s
, hw_limit
);
168 } else if (*hw_limit
< new_limit
) {
172 return kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
175 void kvm_s390_clear_cmma_callback(void *opaque
)
178 KVMState
*s
= opaque
;
179 struct kvm_device_attr attr
= {
180 .group
= KVM_S390_VM_MEM_CTRL
,
181 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
184 rc
= kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
185 trace_kvm_clear_cmma(rc
);
188 static void kvm_s390_enable_cmma(KVMState
*s
)
191 struct kvm_device_attr attr
= {
192 .group
= KVM_S390_VM_MEM_CTRL
,
193 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
196 if (!kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_ENABLE_CMMA
) ||
197 !kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_CLR_CMMA
)) {
201 rc
= kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
203 qemu_register_reset(kvm_s390_clear_cmma_callback
, s
);
205 trace_kvm_enable_cmma(rc
);
208 static void kvm_s390_set_attr(uint64_t attr
)
210 struct kvm_device_attr attribute
= {
211 .group
= KVM_S390_VM_CRYPTO
,
215 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
218 error_report("Failed to set crypto device attribute %lu: %s",
219 attr
, strerror(-ret
));
223 static void kvm_s390_init_aes_kw(void)
225 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
227 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
229 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
232 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
233 kvm_s390_set_attr(attr
);
237 static void kvm_s390_init_dea_kw(void)
239 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
241 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
243 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
246 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
247 kvm_s390_set_attr(attr
);
251 static void kvm_s390_init_crypto(void)
253 kvm_s390_init_aes_kw();
254 kvm_s390_init_dea_kw();
257 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
259 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
260 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
261 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
262 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
264 kvm_s390_enable_cmma(s
);
266 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
267 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
268 phys_mem_set_alloc(legacy_s390_alloc
);
271 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
272 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
277 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
279 return cpu
->cpu_index
;
282 int kvm_arch_init_vcpu(CPUState
*cs
)
284 S390CPU
*cpu
= S390_CPU(cs
);
285 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
286 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE
);
290 void kvm_s390_reset_vcpu(S390CPU
*cpu
)
292 CPUState
*cs
= CPU(cpu
);
294 /* The initial reset call is needed here to reset in-kernel
295 * vcpu data that we can't access directly from QEMU
296 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
297 * Before this ioctl cpu_synchronize_state() is called in common kvm
299 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
)) {
300 error_report("Initial CPU reset failed on CPU %i", cs
->cpu_index
);
303 kvm_s390_init_crypto();
306 static int can_sync_regs(CPUState
*cs
, int regs
)
308 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
311 int kvm_arch_put_registers(CPUState
*cs
, int level
)
313 S390CPU
*cpu
= S390_CPU(cs
);
314 CPUS390XState
*env
= &cpu
->env
;
315 struct kvm_sregs sregs
;
316 struct kvm_regs regs
;
317 struct kvm_fpu fpu
= {};
321 /* always save the PSW and the GPRS*/
322 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
323 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
325 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
326 for (i
= 0; i
< 16; i
++) {
327 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
328 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
331 for (i
= 0; i
< 16; i
++) {
332 regs
.gprs
[i
] = env
->regs
[i
];
334 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
341 for (i
= 0; i
< 16; i
++) {
342 fpu
.fprs
[i
] = get_freg(env
, i
)->ll
;
346 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
351 /* Do we need to save more than that? */
352 if (level
== KVM_PUT_RUNTIME_STATE
) {
356 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
357 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
358 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
359 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
360 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
361 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
362 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
365 * These ONE_REGS are not protected by a capability. As they are only
366 * necessary for migration we just trace a possible error, but don't
367 * return with an error return code.
369 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
370 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
371 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
372 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
373 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
376 /* pfault parameters */
377 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
378 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
379 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
380 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
381 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
382 } else if (cap_async_pf
) {
383 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
387 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
391 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
397 /* access registers and control registers*/
398 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
399 for (i
= 0; i
< 16; i
++) {
400 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
401 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
403 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
404 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
406 for (i
= 0; i
< 16; i
++) {
407 sregs
.acrs
[i
] = env
->aregs
[i
];
408 sregs
.crs
[i
] = env
->cregs
[i
];
410 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
416 /* Finally the prefix */
417 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
418 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
419 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
421 /* prefix is only supported via sync regs */
426 int kvm_arch_get_registers(CPUState
*cs
)
428 S390CPU
*cpu
= S390_CPU(cs
);
429 CPUS390XState
*env
= &cpu
->env
;
430 struct kvm_sregs sregs
;
431 struct kvm_regs regs
;
436 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
437 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
440 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
441 for (i
= 0; i
< 16; i
++) {
442 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
445 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
449 for (i
= 0; i
< 16; i
++) {
450 env
->regs
[i
] = regs
.gprs
[i
];
454 /* The ACRS and CRS */
455 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
456 for (i
= 0; i
< 16; i
++) {
457 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
458 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
461 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
465 for (i
= 0; i
< 16; i
++) {
466 env
->aregs
[i
] = sregs
.acrs
[i
];
467 env
->cregs
[i
] = sregs
.crs
[i
];
472 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
476 for (i
= 0; i
< 16; i
++) {
477 get_freg(env
, i
)->ll
= fpu
.fprs
[i
];
482 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
483 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
486 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
487 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
488 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
489 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
490 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
491 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
494 * These ONE_REGS are not protected by a capability. As they are only
495 * necessary for migration we just trace a possible error, but don't
496 * return with an error return code.
498 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
499 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
500 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
501 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
502 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
505 /* pfault parameters */
506 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
507 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
508 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
509 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
510 } else if (cap_async_pf
) {
511 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
515 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
519 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
528 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
531 struct kvm_device_attr attr
= {
532 .group
= KVM_S390_VM_TOD
,
533 .attr
= KVM_S390_VM_TOD_LOW
,
534 .addr
= (uint64_t)tod_low
,
537 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
542 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
543 attr
.addr
= (uint64_t)tod_high
;
544 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
547 int kvm_s390_set_clock(uint8_t *tod_high
, uint64_t *tod_low
)
551 struct kvm_device_attr attr
= {
552 .group
= KVM_S390_VM_TOD
,
553 .attr
= KVM_S390_VM_TOD_LOW
,
554 .addr
= (uint64_t)tod_low
,
557 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
562 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
563 attr
.addr
= (uint64_t)tod_high
;
564 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
569 * @addr: the logical start address in guest memory
570 * @ar: the access register number
571 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
572 * @len: length that should be transfered
573 * @is_write: true = write, false = read
574 * Returns: 0 on success, non-zero if an exception or error occured
576 * Use KVM ioctl to read/write from/to guest memory. An access exception
577 * is injected into the vCPU in case of translation errors.
579 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
580 int len
, bool is_write
)
582 struct kvm_s390_mem_op mem_op
= {
584 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
586 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
587 : KVM_S390_MEMOP_LOGICAL_READ
,
588 .buf
= (uint64_t)hostbuf
,
597 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
600 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
602 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret
));
608 * Legacy layout for s390:
609 * Older S390 KVM requires the topmost vma of the RAM to be
610 * smaller than an system defined value, which is at least 256GB.
611 * Larger systems have larger values. We put the guest between
612 * the end of data segment (system break) and this value. We
613 * use 32GB as a base to have enough room for the system break
614 * to grow. We also have to use MAP parameters that avoid
615 * read-only mapping of guest pages.
617 static void *legacy_s390_alloc(size_t size
, uint64_t *align
)
621 mem
= mmap((void *) 0x800000000ULL
, size
,
622 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
623 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
624 return mem
== MAP_FAILED
? NULL
: mem
;
627 /* DIAG 501 is used for sw breakpoints */
628 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
630 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
633 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
634 sizeof(diag_501
), 0) ||
635 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)diag_501
,
636 sizeof(diag_501
), 1)) {
642 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
644 uint8_t t
[sizeof(diag_501
)];
646 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sizeof(diag_501
), 0)) {
648 } else if (memcmp(t
, diag_501
, sizeof(diag_501
))) {
650 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
651 sizeof(diag_501
), 1)) {
658 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
663 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
664 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
665 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
666 return &hw_breakpoints
[n
];
673 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
677 if (find_hw_breakpoint(addr
, len
, type
)) {
681 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
683 if (!hw_breakpoints
) {
684 nb_hw_breakpoints
= 0;
685 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
688 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
691 if (!hw_breakpoints
) {
692 nb_hw_breakpoints
= 0;
696 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
697 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
698 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
705 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
706 target_ulong len
, int type
)
709 case GDB_BREAKPOINT_HW
:
712 case GDB_WATCHPOINT_WRITE
:
716 type
= KVM_HW_WP_WRITE
;
721 return insert_hw_breakpoint(addr
, len
, type
);
724 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
725 target_ulong len
, int type
)
728 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
735 if (nb_hw_breakpoints
> 0) {
737 * In order to trim the array, move the last element to the position to
738 * be removed - if necessary.
740 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
741 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
743 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
745 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
747 g_free(hw_breakpoints
);
748 hw_breakpoints
= NULL
;
754 void kvm_arch_remove_all_hw_breakpoints(void)
756 nb_hw_breakpoints
= 0;
757 g_free(hw_breakpoints
);
758 hw_breakpoints
= NULL
;
761 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
765 if (nb_hw_breakpoints
> 0) {
766 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
767 dbg
->arch
.hw_bp
= hw_breakpoints
;
769 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
770 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
771 hw_breakpoints
[i
].addr
);
773 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
775 dbg
->arch
.nr_hw_bp
= 0;
776 dbg
->arch
.hw_bp
= NULL
;
780 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
784 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
786 return MEMTXATTRS_UNSPECIFIED
;
789 int kvm_arch_process_async_events(CPUState
*cs
)
794 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
795 struct kvm_s390_interrupt
*interrupt
)
799 interrupt
->type
= irq
->type
;
801 case KVM_S390_INT_VIRTIO
:
802 interrupt
->parm
= irq
->u
.ext
.ext_params
;
804 case KVM_S390_INT_PFAULT_INIT
:
805 case KVM_S390_INT_PFAULT_DONE
:
806 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
808 case KVM_S390_PROGRAM_INT
:
809 interrupt
->parm
= irq
->u
.pgm
.code
;
811 case KVM_S390_SIGP_SET_PREFIX
:
812 interrupt
->parm
= irq
->u
.prefix
.address
;
814 case KVM_S390_INT_SERVICE
:
815 interrupt
->parm
= irq
->u
.ext
.ext_params
;
818 interrupt
->parm
= irq
->u
.mchk
.cr14
;
819 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
821 case KVM_S390_INT_EXTERNAL_CALL
:
822 interrupt
->parm
= irq
->u
.extcall
.code
;
824 case KVM_S390_INT_EMERGENCY
:
825 interrupt
->parm
= irq
->u
.emerg
.code
;
827 case KVM_S390_SIGP_STOP
:
828 case KVM_S390_RESTART
:
829 break; /* These types have no parameters */
830 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
831 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
832 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
833 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
834 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
843 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
845 struct kvm_s390_interrupt kvmint
= {};
848 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
850 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
854 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
856 fprintf(stderr
, "KVM failed to inject interrupt\n");
861 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
863 CPUState
*cs
= CPU(cpu
);
867 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
871 error_report("KVM failed to inject interrupt %llx", irq
->type
);
875 inject_vcpu_irq_legacy(cs
, irq
);
878 static void __kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
880 struct kvm_s390_interrupt kvmint
= {};
883 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
885 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
889 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
891 fprintf(stderr
, "KVM failed to inject interrupt\n");
896 void kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
898 static bool use_flic
= true;
902 r
= kvm_s390_inject_flic(irq
);
910 __kvm_s390_floating_interrupt(irq
);
913 void kvm_s390_virtio_irq(int config_change
, uint64_t token
)
915 struct kvm_s390_irq irq
= {
916 .type
= KVM_S390_INT_VIRTIO
,
917 .u
.ext
.ext_params
= config_change
,
918 .u
.ext
.ext_params2
= token
,
921 kvm_s390_floating_interrupt(&irq
);
924 void kvm_s390_service_interrupt(uint32_t parm
)
926 struct kvm_s390_irq irq
= {
927 .type
= KVM_S390_INT_SERVICE
,
928 .u
.ext
.ext_params
= parm
,
931 kvm_s390_floating_interrupt(&irq
);
934 static void enter_pgmcheck(S390CPU
*cpu
, uint16_t code
)
936 struct kvm_s390_irq irq
= {
937 .type
= KVM_S390_PROGRAM_INT
,
941 kvm_s390_vcpu_interrupt(cpu
, &irq
);
944 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
946 struct kvm_s390_irq irq
= {
947 .type
= KVM_S390_PROGRAM_INT
,
949 .u
.pgm
.trans_exc_code
= te_code
,
950 .u
.pgm
.exc_access_id
= te_code
& 3,
953 kvm_s390_vcpu_interrupt(cpu
, &irq
);
956 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
959 CPUS390XState
*env
= &cpu
->env
;
964 cpu_synchronize_state(CPU(cpu
));
965 sccb
= env
->regs
[ipbh0
& 0xf];
966 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
968 r
= sclp_service_call(env
, sccb
, code
);
970 enter_pgmcheck(cpu
, -r
);
978 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
980 CPUS390XState
*env
= &cpu
->env
;
982 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
984 cpu_synchronize_state(CPU(cpu
));
988 ioinst_handle_xsch(cpu
, env
->regs
[1]);
991 ioinst_handle_csch(cpu
, env
->regs
[1]);
994 ioinst_handle_hsch(cpu
, env
->regs
[1]);
997 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1000 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1003 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
);
1006 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
1009 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1010 fprintf(stderr
, "Spurious tsch intercept\n");
1013 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
);
1016 /* This should have been handled by kvm already. */
1017 fprintf(stderr
, "Spurious tpi intercept\n");
1020 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1021 run
->s390_sieic
.ipb
);
1024 ioinst_handle_rsch(cpu
, env
->regs
[1]);
1027 ioinst_handle_rchp(cpu
, env
->regs
[1]);
1030 /* We do not provide this instruction, it is suppressed. */
1033 ioinst_handle_sal(cpu
, env
->regs
[1]);
1036 /* Not provided, set CC = 3 for subchannel not operational */
1039 case PRIV_B2_SCLP_CALL
:
1040 rc
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
1044 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1051 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1054 CPUS390XState
*env
= &cpu
->env
;
1055 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1056 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1057 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1058 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1060 if (disp2
& 0x80000) {
1061 disp2
+= 0xfff00000;
1067 return (base2
? env
->regs
[base2
] : 0) +
1068 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1071 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1074 CPUS390XState
*env
= &cpu
->env
;
1075 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1076 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1077 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1079 if (disp2
& 0x80000) {
1080 disp2
+= 0xfff00000;
1086 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1089 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1091 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1093 return clp_service_call(cpu
, r2
);
1096 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1098 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1099 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1101 return pcilg_service_call(cpu
, r1
, r2
);
1104 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1106 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1107 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1109 return pcistg_service_call(cpu
, r1
, r2
);
1112 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1114 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1118 cpu_synchronize_state(CPU(cpu
));
1119 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1121 return stpcifc_service_call(cpu
, r1
, fiba
, ar
);
1124 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1130 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1132 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1133 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1135 return rpcit_service_call(cpu
, r1
, r2
);
1138 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1140 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1141 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1145 cpu_synchronize_state(CPU(cpu
));
1146 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1148 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
);
1151 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1153 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1157 cpu_synchronize_state(CPU(cpu
));
1158 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1160 return mpcifc_service_call(cpu
, r1
, fiba
, ar
);
1163 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1169 r
= kvm_clp_service_call(cpu
, run
);
1171 case PRIV_B9_PCISTG
:
1172 r
= kvm_pcistg_service_call(cpu
, run
);
1175 r
= kvm_pcilg_service_call(cpu
, run
);
1178 r
= kvm_rpcit_service_call(cpu
, run
);
1181 /* just inject exception */
1186 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1193 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1198 case PRIV_EB_PCISTB
:
1199 r
= kvm_pcistb_service_call(cpu
, run
);
1202 r
= kvm_sic_service_call(cpu
, run
);
1205 /* just inject exception */
1210 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1217 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1222 case PRIV_E3_MPCIFC
:
1223 r
= kvm_mpcifc_service_call(cpu
, run
);
1225 case PRIV_E3_STPCIFC
:
1226 r
= kvm_stpcifc_service_call(cpu
, run
);
1230 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1237 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1239 CPUS390XState
*env
= &cpu
->env
;
1242 cpu_synchronize_state(CPU(cpu
));
1243 ret
= s390_virtio_hypercall(env
);
1244 if (ret
== -EINVAL
) {
1245 enter_pgmcheck(cpu
, PGM_SPECIFICATION
);
1252 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1256 cpu_synchronize_state(CPU(cpu
));
1257 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1258 r3
= run
->s390_sieic
.ipa
& 0x000f;
1259 handle_diag_308(&cpu
->env
, r1
, r3
);
1262 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1264 CPUS390XState
*env
= &cpu
->env
;
1267 cpu_synchronize_state(CPU(cpu
));
1269 pc
= env
->psw
.addr
- 4;
1270 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1278 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1280 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1286 * For any diagnose call we support, bits 48-63 of the resulting
1287 * address specify the function code; the remainder is ignored.
1289 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1290 switch (func_code
) {
1292 kvm_handle_diag_308(cpu
, run
);
1294 case DIAG_KVM_HYPERCALL
:
1295 r
= handle_hypercall(cpu
, run
);
1297 case DIAG_KVM_BREAKPOINT
:
1298 r
= handle_sw_breakpoint(cpu
, run
);
1301 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1302 enter_pgmcheck(cpu
, PGM_SPECIFICATION
);
1309 typedef struct SigpInfo
{
1313 uint64_t *status_reg
;
1316 static void set_sigp_status(SigpInfo
*si
, uint64_t status
)
1318 *si
->status_reg
&= 0xffffffff00000000ULL
;
1319 *si
->status_reg
|= status
;
1320 si
->cc
= SIGP_CC_STATUS_STORED
;
1323 static void sigp_start(void *arg
)
1327 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1328 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1332 s390_cpu_set_state(CPU_STATE_OPERATING
, si
->cpu
);
1333 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1336 static void sigp_stop(void *arg
)
1339 struct kvm_s390_irq irq
= {
1340 .type
= KVM_S390_SIGP_STOP
,
1343 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_OPERATING
) {
1344 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1348 /* disabled wait - sleeping in user space */
1349 if (CPU(si
->cpu
)->halted
) {
1350 s390_cpu_set_state(CPU_STATE_STOPPED
, si
->cpu
);
1352 /* execute the stop function */
1353 si
->cpu
->env
.sigp_order
= SIGP_STOP
;
1354 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1356 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1359 #define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1360 #define SAVE_AREA_SIZE 512
1361 static int kvm_s390_store_status(S390CPU
*cpu
, hwaddr addr
, bool store_arch
)
1363 static const uint8_t ar_id
= 1;
1364 uint64_t ckc
= cpu
->env
.ckc
>> 8;
1367 hwaddr len
= SAVE_AREA_SIZE
;
1369 mem
= cpu_physical_memory_map(addr
, &len
, 1);
1373 if (len
!= SAVE_AREA_SIZE
) {
1374 cpu_physical_memory_unmap(mem
, len
, 1, 0);
1379 cpu_physical_memory_write(offsetof(LowCore
, ar_access_id
), &ar_id
, 1);
1381 for (i
= 0; i
< 16; ++i
) {
1382 *((uint64
*)mem
+ i
) = get_freg(&cpu
->env
, i
)->ll
;
1384 memcpy(mem
+ 128, &cpu
->env
.regs
, 128);
1385 memcpy(mem
+ 256, &cpu
->env
.psw
, 16);
1386 memcpy(mem
+ 280, &cpu
->env
.psa
, 4);
1387 memcpy(mem
+ 284, &cpu
->env
.fpc
, 4);
1388 memcpy(mem
+ 292, &cpu
->env
.todpr
, 4);
1389 memcpy(mem
+ 296, &cpu
->env
.cputm
, 8);
1390 memcpy(mem
+ 304, &ckc
, 8);
1391 memcpy(mem
+ 320, &cpu
->env
.aregs
, 64);
1392 memcpy(mem
+ 384, &cpu
->env
.cregs
, 128);
1394 cpu_physical_memory_unmap(mem
, len
, 1, len
);
1399 static void sigp_stop_and_store_status(void *arg
)
1402 struct kvm_s390_irq irq
= {
1403 .type
= KVM_S390_SIGP_STOP
,
1406 /* disabled wait - sleeping in user space */
1407 if (s390_cpu_get_state(si
->cpu
) == CPU_STATE_OPERATING
&&
1408 CPU(si
->cpu
)->halted
) {
1409 s390_cpu_set_state(CPU_STATE_STOPPED
, si
->cpu
);
1412 switch (s390_cpu_get_state(si
->cpu
)) {
1413 case CPU_STATE_OPERATING
:
1414 si
->cpu
->env
.sigp_order
= SIGP_STOP_STORE_STATUS
;
1415 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1416 /* store will be performed when handling the stop intercept */
1418 case CPU_STATE_STOPPED
:
1419 /* already stopped, just store the status */
1420 cpu_synchronize_state(CPU(si
->cpu
));
1421 kvm_s390_store_status(si
->cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
, true);
1424 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1427 static void sigp_store_status_at_address(void *arg
)
1430 uint32_t address
= si
->param
& 0x7ffffe00u
;
1432 /* cpu has to be stopped */
1433 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1434 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1438 cpu_synchronize_state(CPU(si
->cpu
));
1440 if (kvm_s390_store_status(si
->cpu
, address
, false)) {
1441 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1444 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1447 static void sigp_restart(void *arg
)
1450 struct kvm_s390_irq irq
= {
1451 .type
= KVM_S390_RESTART
,
1454 switch (s390_cpu_get_state(si
->cpu
)) {
1455 case CPU_STATE_STOPPED
:
1456 /* the restart irq has to be delivered prior to any other pending irq */
1457 cpu_synchronize_state(CPU(si
->cpu
));
1458 do_restart_interrupt(&si
->cpu
->env
);
1459 s390_cpu_set_state(CPU_STATE_OPERATING
, si
->cpu
);
1461 case CPU_STATE_OPERATING
:
1462 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1465 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1468 int kvm_s390_cpu_restart(S390CPU
*cpu
)
1474 run_on_cpu(CPU(cpu
), sigp_restart
, &si
);
1475 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu
->env
);
1479 static void sigp_initial_cpu_reset(void *arg
)
1482 CPUState
*cs
= CPU(si
->cpu
);
1483 S390CPUClass
*scc
= S390_CPU_GET_CLASS(si
->cpu
);
1485 cpu_synchronize_state(cs
);
1486 scc
->initial_cpu_reset(cs
);
1487 cpu_synchronize_post_reset(cs
);
1488 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1491 static void sigp_cpu_reset(void *arg
)
1494 CPUState
*cs
= CPU(si
->cpu
);
1495 S390CPUClass
*scc
= S390_CPU_GET_CLASS(si
->cpu
);
1497 cpu_synchronize_state(cs
);
1499 cpu_synchronize_post_reset(cs
);
1500 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1503 static void sigp_set_prefix(void *arg
)
1506 uint32_t addr
= si
->param
& 0x7fffe000u
;
1508 cpu_synchronize_state(CPU(si
->cpu
));
1510 if (!address_space_access_valid(&address_space_memory
, addr
,
1511 sizeof(struct LowCore
), false)) {
1512 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1516 /* cpu has to be stopped */
1517 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1518 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1522 si
->cpu
->env
.psa
= addr
;
1523 cpu_synchronize_post_init(CPU(si
->cpu
));
1524 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1527 static int handle_sigp_single_dst(S390CPU
*dst_cpu
, uint8_t order
,
1528 uint64_t param
, uint64_t *status_reg
)
1533 .status_reg
= status_reg
,
1536 /* cpu available? */
1537 if (dst_cpu
== NULL
) {
1538 return SIGP_CC_NOT_OPERATIONAL
;
1541 /* only resets can break pending orders */
1542 if (dst_cpu
->env
.sigp_order
!= 0 &&
1543 order
!= SIGP_CPU_RESET
&&
1544 order
!= SIGP_INITIAL_CPU_RESET
) {
1545 return SIGP_CC_BUSY
;
1550 run_on_cpu(CPU(dst_cpu
), sigp_start
, &si
);
1553 run_on_cpu(CPU(dst_cpu
), sigp_stop
, &si
);
1556 run_on_cpu(CPU(dst_cpu
), sigp_restart
, &si
);
1558 case SIGP_STOP_STORE_STATUS
:
1559 run_on_cpu(CPU(dst_cpu
), sigp_stop_and_store_status
, &si
);
1561 case SIGP_STORE_STATUS_ADDR
:
1562 run_on_cpu(CPU(dst_cpu
), sigp_store_status_at_address
, &si
);
1564 case SIGP_SET_PREFIX
:
1565 run_on_cpu(CPU(dst_cpu
), sigp_set_prefix
, &si
);
1567 case SIGP_INITIAL_CPU_RESET
:
1568 run_on_cpu(CPU(dst_cpu
), sigp_initial_cpu_reset
, &si
);
1570 case SIGP_CPU_RESET
:
1571 run_on_cpu(CPU(dst_cpu
), sigp_cpu_reset
, &si
);
1574 DPRINTF("KVM: unknown SIGP: 0x%x\n", order
);
1575 set_sigp_status(&si
, SIGP_STAT_INVALID_ORDER
);
1581 static int sigp_set_architecture(S390CPU
*cpu
, uint32_t param
,
1582 uint64_t *status_reg
)
1587 /* due to the BQL, we are the only active cpu */
1588 CPU_FOREACH(cur_cs
) {
1589 cur_cpu
= S390_CPU(cur_cs
);
1590 if (cur_cpu
->env
.sigp_order
!= 0) {
1591 return SIGP_CC_BUSY
;
1593 cpu_synchronize_state(cur_cs
);
1594 /* all but the current one have to be stopped */
1595 if (cur_cpu
!= cpu
&&
1596 s390_cpu_get_state(cur_cpu
) != CPU_STATE_STOPPED
) {
1597 *status_reg
&= 0xffffffff00000000ULL
;
1598 *status_reg
|= SIGP_STAT_INCORRECT_STATE
;
1599 return SIGP_CC_STATUS_STORED
;
1603 switch (param
& 0xff) {
1604 case SIGP_MODE_ESA_S390
:
1606 return SIGP_CC_NOT_OPERATIONAL
;
1607 case SIGP_MODE_Z_ARCH_TRANS_ALL_PSW
:
1608 case SIGP_MODE_Z_ARCH_TRANS_CUR_PSW
:
1609 CPU_FOREACH(cur_cs
) {
1610 cur_cpu
= S390_CPU(cur_cs
);
1611 cur_cpu
->env
.pfault_token
= -1UL;
1615 *status_reg
&= 0xffffffff00000000ULL
;
1616 *status_reg
|= SIGP_STAT_INVALID_PARAMETER
;
1617 return SIGP_CC_STATUS_STORED
;
1620 return SIGP_CC_ORDER_CODE_ACCEPTED
;
1623 #define SIGP_ORDER_MASK 0x000000ff
1625 static int handle_sigp(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1627 CPUS390XState
*env
= &cpu
->env
;
1628 const uint8_t r1
= ipa1
>> 4;
1629 const uint8_t r3
= ipa1
& 0x0f;
1632 uint64_t *status_reg
;
1634 S390CPU
*dst_cpu
= NULL
;
1636 cpu_synchronize_state(CPU(cpu
));
1638 /* get order code */
1639 order
= decode_basedisp_rs(env
, run
->s390_sieic
.ipb
, NULL
)
1641 status_reg
= &env
->regs
[r1
];
1642 param
= (r1
% 2) ? env
->regs
[r1
] : env
->regs
[r1
+ 1];
1646 ret
= sigp_set_architecture(cpu
, param
, status_reg
);
1649 /* all other sigp orders target a single vcpu */
1650 dst_cpu
= s390_cpu_addr2state(env
->regs
[r3
]);
1651 ret
= handle_sigp_single_dst(dst_cpu
, order
, param
, status_reg
);
1654 trace_kvm_sigp_finished(order
, CPU(cpu
)->cpu_index
,
1655 dst_cpu
? CPU(dst_cpu
)->cpu_index
: -1, ret
);
1665 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1667 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1668 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1671 DPRINTF("handle_instruction 0x%x 0x%x\n",
1672 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1675 r
= handle_b2(cpu
, run
, ipa1
);
1678 r
= handle_b9(cpu
, run
, ipa1
);
1681 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1684 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1687 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1690 r
= handle_sigp(cpu
, run
, ipa1
);
1696 enter_pgmcheck(cpu
, 0x0001);
1702 static bool is_special_wait_psw(CPUState
*cs
)
1704 /* signal quiesce */
1705 return cs
->kvm_run
->psw_addr
== 0xfffUL
;
1708 static void guest_panicked(void)
1710 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE
,
1712 vm_stop(RUN_STATE_GUEST_PANICKED
);
1715 static void unmanageable_intercept(S390CPU
*cpu
, const char *str
, int pswoffset
)
1717 CPUState
*cs
= CPU(cpu
);
1719 error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1720 str
, cs
->cpu_index
, ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
),
1721 ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
+ 8));
1726 static int handle_intercept(S390CPU
*cpu
)
1728 CPUState
*cs
= CPU(cpu
);
1729 struct kvm_run
*run
= cs
->kvm_run
;
1730 int icpt_code
= run
->s390_sieic
.icptcode
;
1733 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1734 (long)cs
->kvm_run
->psw_addr
);
1735 switch (icpt_code
) {
1736 case ICPT_INSTRUCTION
:
1737 r
= handle_instruction(cpu
, run
);
1740 unmanageable_intercept(cpu
, "program interrupt",
1741 offsetof(LowCore
, program_new_psw
));
1745 unmanageable_intercept(cpu
, "external interrupt",
1746 offsetof(LowCore
, external_new_psw
));
1750 /* disabled wait, since enabled wait is handled in kernel */
1751 cpu_synchronize_state(cs
);
1752 if (s390_cpu_halt(cpu
) == 0) {
1753 if (is_special_wait_psw(cs
)) {
1754 qemu_system_shutdown_request();
1762 if (s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
) == 0) {
1763 qemu_system_shutdown_request();
1765 if (cpu
->env
.sigp_order
== SIGP_STOP_STORE_STATUS
) {
1766 kvm_s390_store_status(cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
,
1769 cpu
->env
.sigp_order
= 0;
1772 case ICPT_SOFT_INTERCEPT
:
1773 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1777 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1781 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1789 static int handle_tsch(S390CPU
*cpu
)
1791 CPUState
*cs
= CPU(cpu
);
1792 struct kvm_run
*run
= cs
->kvm_run
;
1795 cpu_synchronize_state(cs
);
1797 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
);
1801 * If an I/O interrupt had been dequeued, we have to reinject it.
1803 if (run
->s390_tsch
.dequeued
) {
1804 kvm_s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1805 run
->s390_tsch
.subchannel_nr
,
1806 run
->s390_tsch
.io_int_parm
,
1807 run
->s390_tsch
.io_int_word
);
1814 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
1816 struct sysib_322 sysib
;
1819 if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
1822 /* Shift the stack of Extended Names to prepare for our own data */
1823 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
1824 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
1825 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1826 * assumed it's not capable of managing Extended Names for lower levels.
1828 for (del
= 1; del
< sysib
.count
; del
++) {
1829 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
1833 if (del
< sysib
.count
) {
1834 memset(sysib
.ext_names
[del
], 0,
1835 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
1837 /* Insert short machine name in EBCDIC, padded with blanks */
1839 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
1840 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
1841 strlen(qemu_name
)));
1843 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
1844 memset(sysib
.ext_names
[0], 0, sizeof(sysib
.ext_names
[0]));
1845 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1846 * considered by s390 as not capable of providing any Extended Name.
1847 * Therefore if no name was specified on qemu invocation, we go with the
1848 * same "KVMguest" default, which KVM has filled into short name field.
1851 strncpy((char *)sysib
.ext_names
[0], qemu_name
,
1852 sizeof(sysib
.ext_names
[0]));
1854 strcpy((char *)sysib
.ext_names
[0], "KVMguest");
1857 memcpy(sysib
.vm
[0].uuid
, qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
1859 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
1862 static int handle_stsi(S390CPU
*cpu
)
1864 CPUState
*cs
= CPU(cpu
);
1865 struct kvm_run
*run
= cs
->kvm_run
;
1867 switch (run
->s390_stsi
.fc
) {
1869 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
1872 /* Only sysib 3.2.2 needs post-handling for now. */
1873 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
1880 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1882 CPUState
*cs
= CPU(cpu
);
1883 struct kvm_run
*run
= cs
->kvm_run
;
1886 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1888 switch (arch_info
->type
) {
1889 case KVM_HW_WP_WRITE
:
1890 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1891 cs
->watchpoint_hit
= &hw_watchpoint
;
1892 hw_watchpoint
.vaddr
= arch_info
->addr
;
1893 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1898 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1902 case KVM_SINGLESTEP
:
1903 if (cs
->singlestep_enabled
) {
1914 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1916 S390CPU
*cpu
= S390_CPU(cs
);
1919 switch (run
->exit_reason
) {
1920 case KVM_EXIT_S390_SIEIC
:
1921 ret
= handle_intercept(cpu
);
1923 case KVM_EXIT_S390_RESET
:
1924 s390_reipl_request();
1926 case KVM_EXIT_S390_TSCH
:
1927 ret
= handle_tsch(cpu
);
1929 case KVM_EXIT_S390_STSI
:
1930 ret
= handle_stsi(cpu
);
1932 case KVM_EXIT_DEBUG
:
1933 ret
= kvm_arch_handle_debug_exit(cpu
);
1936 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
1941 ret
= EXCP_INTERRUPT
;
1946 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
1951 int kvm_arch_on_sigbus_vcpu(CPUState
*cpu
, int code
, void *addr
)
1956 int kvm_arch_on_sigbus(int code
, void *addr
)
1961 void kvm_s390_io_interrupt(uint16_t subchannel_id
,
1962 uint16_t subchannel_nr
, uint32_t io_int_parm
,
1963 uint32_t io_int_word
)
1965 struct kvm_s390_irq irq
= {
1966 .u
.io
.subchannel_id
= subchannel_id
,
1967 .u
.io
.subchannel_nr
= subchannel_nr
,
1968 .u
.io
.io_int_parm
= io_int_parm
,
1969 .u
.io
.io_int_word
= io_int_word
,
1972 if (io_int_word
& IO_INT_WORD_AI
) {
1973 irq
.type
= KVM_S390_INT_IO(1, 0, 0, 0);
1975 irq
.type
= ((subchannel_id
& 0xff00) << 24) |
1976 ((subchannel_id
& 0x00060) << 22) | (subchannel_nr
<< 16);
1978 kvm_s390_floating_interrupt(&irq
);
1981 void kvm_s390_crw_mchk(void)
1983 struct kvm_s390_irq irq
= {
1984 .type
= KVM_S390_MCHK
,
1985 .u
.mchk
.cr14
= 1 << 28,
1986 .u
.mchk
.mcic
= 0x00400f1d40330000ULL
,
1988 kvm_s390_floating_interrupt(&irq
);
1991 void kvm_s390_enable_css_support(S390CPU
*cpu
)
1995 /* Activate host kernel channel subsystem support. */
1996 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
2000 void kvm_arch_init_irq_routing(KVMState
*s
)
2003 * Note that while irqchip capabilities generally imply that cpustates
2004 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2005 * have to override the common code kvm_halt_in_kernel_allowed setting.
2007 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
2008 kvm_gsi_routing_allowed
= true;
2009 kvm_halt_in_kernel_allowed
= false;
2013 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
2014 int vq
, bool assign
)
2016 struct kvm_ioeventfd kick
= {
2017 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
2018 KVM_IOEVENTFD_FLAG_DATAMATCH
,
2019 .fd
= event_notifier_get_fd(notifier
),
2024 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
2028 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
2030 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
2033 int kvm_s390_get_memslot_count(KVMState
*s
)
2035 return kvm_check_extension(s
, KVM_CAP_NR_MEMSLOTS
);
2038 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
2040 struct kvm_mp_state mp_state
= {};
2043 /* the kvm part might not have been initialized yet */
2044 if (CPU(cpu
)->kvm_state
== NULL
) {
2048 switch (cpu_state
) {
2049 case CPU_STATE_STOPPED
:
2050 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
2052 case CPU_STATE_CHECK_STOP
:
2053 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
2055 case CPU_STATE_OPERATING
:
2056 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
2058 case CPU_STATE_LOAD
:
2059 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
2062 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2067 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
2069 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
2076 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
2078 struct kvm_s390_irq_state irq_state
;
2079 CPUState
*cs
= CPU(cpu
);
2082 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2086 irq_state
.buf
= (uint64_t) cpu
->irqstate
;
2087 irq_state
.len
= VCPU_IRQ_BUF_SIZE
;
2089 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
2091 cpu
->irqstate_saved_size
= 0;
2092 error_report("Migration of interrupt state failed");
2096 cpu
->irqstate_saved_size
= bytes
;
2099 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
2101 CPUState
*cs
= CPU(cpu
);
2102 struct kvm_s390_irq_state irq_state
;
2105 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2109 if (cpu
->irqstate_saved_size
== 0) {
2112 irq_state
.buf
= (uint64_t) cpu
->irqstate
;
2113 irq_state
.len
= cpu
->irqstate_saved_size
;
2115 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
2117 error_report("Setting interrupt state failed %d", r
);
2122 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2123 uint64_t address
, uint32_t data
)
2125 S390PCIBusDevice
*pbdev
;
2126 uint32_t fid
= data
>> ZPCI_MSI_VEC_BITS
;
2127 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2129 pbdev
= s390_pci_find_dev_by_fid(fid
);
2131 DPRINTF("add_msi_route no dev\n");
2135 pbdev
->routes
.adapter
.ind_offset
= vec
;
2137 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2139 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2140 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2141 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2142 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
;
2143 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;