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"
49 /* #define DEBUG_KVM */
52 #define DPRINTF(fmt, ...) \
53 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
55 #define DPRINTF(fmt, ...) \
59 #define kvm_vm_check_mem_attr(s, attr) \
60 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
62 #define IPA0_DIAG 0x8300
63 #define IPA0_SIGP 0xae00
64 #define IPA0_B2 0xb200
65 #define IPA0_B9 0xb900
66 #define IPA0_EB 0xeb00
67 #define IPA0_E3 0xe300
69 #define PRIV_B2_SCLP_CALL 0x20
70 #define PRIV_B2_CSCH 0x30
71 #define PRIV_B2_HSCH 0x31
72 #define PRIV_B2_MSCH 0x32
73 #define PRIV_B2_SSCH 0x33
74 #define PRIV_B2_STSCH 0x34
75 #define PRIV_B2_TSCH 0x35
76 #define PRIV_B2_TPI 0x36
77 #define PRIV_B2_SAL 0x37
78 #define PRIV_B2_RSCH 0x38
79 #define PRIV_B2_STCRW 0x39
80 #define PRIV_B2_STCPS 0x3a
81 #define PRIV_B2_RCHP 0x3b
82 #define PRIV_B2_SCHM 0x3c
83 #define PRIV_B2_CHSC 0x5f
84 #define PRIV_B2_SIGA 0x74
85 #define PRIV_B2_XSCH 0x76
87 #define PRIV_EB_SQBS 0x8a
88 #define PRIV_EB_PCISTB 0xd0
89 #define PRIV_EB_SIC 0xd1
91 #define PRIV_B9_EQBS 0x9c
92 #define PRIV_B9_CLP 0xa0
93 #define PRIV_B9_PCISTG 0xd0
94 #define PRIV_B9_PCILG 0xd2
95 #define PRIV_B9_RPCIT 0xd3
97 #define PRIV_E3_MPCIFC 0xd0
98 #define PRIV_E3_STPCIFC 0xd4
100 #define DIAG_IPL 0x308
101 #define DIAG_KVM_HYPERCALL 0x500
102 #define DIAG_KVM_BREAKPOINT 0x501
104 #define ICPT_INSTRUCTION 0x04
105 #define ICPT_PROGRAM 0x08
106 #define ICPT_EXT_INT 0x14
107 #define ICPT_WAITPSW 0x1c
108 #define ICPT_SOFT_INTERCEPT 0x24
109 #define ICPT_CPU_STOP 0x28
112 static CPUWatchpoint hw_watchpoint
;
114 * We don't use a list because this structure is also used to transmit the
115 * hardware breakpoints to the kernel.
117 static struct kvm_hw_breakpoint
*hw_breakpoints
;
118 static int nb_hw_breakpoints
;
120 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
124 static int cap_sync_regs
;
125 static int cap_async_pf
;
126 static int cap_mem_op
;
128 static void *legacy_s390_alloc(size_t size
, uint64_t *align
);
130 static int kvm_s390_query_mem_limit(KVMState
*s
, uint64_t *memory_limit
)
132 struct kvm_device_attr attr
= {
133 .group
= KVM_S390_VM_MEM_CTRL
,
134 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
135 .addr
= (uint64_t) memory_limit
,
138 return kvm_vm_ioctl(s
, KVM_GET_DEVICE_ATTR
, &attr
);
141 int kvm_s390_set_mem_limit(KVMState
*s
, uint64_t new_limit
, uint64_t *hw_limit
)
145 struct kvm_device_attr attr
= {
146 .group
= KVM_S390_VM_MEM_CTRL
,
147 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
148 .addr
= (uint64_t) &new_limit
,
151 if (!kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
155 rc
= kvm_s390_query_mem_limit(s
, hw_limit
);
158 } else if (*hw_limit
< new_limit
) {
162 return kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
165 void kvm_s390_clear_cmma_callback(void *opaque
)
168 KVMState
*s
= opaque
;
169 struct kvm_device_attr attr
= {
170 .group
= KVM_S390_VM_MEM_CTRL
,
171 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
174 rc
= kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
175 trace_kvm_clear_cmma(rc
);
178 static void kvm_s390_enable_cmma(KVMState
*s
)
181 struct kvm_device_attr attr
= {
182 .group
= KVM_S390_VM_MEM_CTRL
,
183 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
186 if (!kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_ENABLE_CMMA
) ||
187 !kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_CLR_CMMA
)) {
191 rc
= kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
193 qemu_register_reset(kvm_s390_clear_cmma_callback
, s
);
195 trace_kvm_enable_cmma(rc
);
198 static void kvm_s390_set_attr(uint64_t attr
)
200 struct kvm_device_attr attribute
= {
201 .group
= KVM_S390_VM_CRYPTO
,
205 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
208 error_report("Failed to set crypto device attribute %lu: %s",
209 attr
, strerror(-ret
));
213 static void kvm_s390_init_aes_kw(void)
215 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
217 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
219 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
222 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
223 kvm_s390_set_attr(attr
);
227 static void kvm_s390_init_dea_kw(void)
229 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
231 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
233 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
236 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
237 kvm_s390_set_attr(attr
);
241 static void kvm_s390_init_crypto(void)
243 kvm_s390_init_aes_kw();
244 kvm_s390_init_dea_kw();
247 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
249 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
250 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
251 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
253 kvm_s390_enable_cmma(s
);
255 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
256 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
257 phys_mem_set_alloc(legacy_s390_alloc
);
260 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
261 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
266 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
268 return cpu
->cpu_index
;
271 int kvm_arch_init_vcpu(CPUState
*cs
)
273 S390CPU
*cpu
= S390_CPU(cs
);
274 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
278 void kvm_s390_reset_vcpu(S390CPU
*cpu
)
280 CPUState
*cs
= CPU(cpu
);
282 /* The initial reset call is needed here to reset in-kernel
283 * vcpu data that we can't access directly from QEMU
284 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
285 * Before this ioctl cpu_synchronize_state() is called in common kvm
287 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
)) {
288 error_report("Initial CPU reset failed on CPU %i", cs
->cpu_index
);
291 kvm_s390_init_crypto();
294 static int can_sync_regs(CPUState
*cs
, int regs
)
296 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
299 int kvm_arch_put_registers(CPUState
*cs
, int level
)
301 S390CPU
*cpu
= S390_CPU(cs
);
302 CPUS390XState
*env
= &cpu
->env
;
303 struct kvm_sregs sregs
;
304 struct kvm_regs regs
;
305 struct kvm_fpu fpu
= {};
309 /* always save the PSW and the GPRS*/
310 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
311 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
313 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
314 for (i
= 0; i
< 16; i
++) {
315 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
316 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
319 for (i
= 0; i
< 16; i
++) {
320 regs
.gprs
[i
] = env
->regs
[i
];
322 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
329 for (i
= 0; i
< 16; i
++) {
330 fpu
.fprs
[i
] = env
->fregs
[i
].ll
;
334 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
339 /* Do we need to save more than that? */
340 if (level
== KVM_PUT_RUNTIME_STATE
) {
344 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
345 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
346 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
347 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
348 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
349 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
350 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
353 * These ONE_REGS are not protected by a capability. As they are only
354 * necessary for migration we just trace a possible error, but don't
355 * return with an error return code.
357 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
358 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
359 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
360 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
361 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
364 /* pfault parameters */
365 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
366 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
367 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
368 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
369 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
370 } else if (cap_async_pf
) {
371 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
375 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
379 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
385 /* access registers and control registers*/
386 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
387 for (i
= 0; i
< 16; i
++) {
388 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
389 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
391 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
392 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
394 for (i
= 0; i
< 16; i
++) {
395 sregs
.acrs
[i
] = env
->aregs
[i
];
396 sregs
.crs
[i
] = env
->cregs
[i
];
398 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
404 /* Finally the prefix */
405 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
406 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
407 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
409 /* prefix is only supported via sync regs */
414 int kvm_arch_get_registers(CPUState
*cs
)
416 S390CPU
*cpu
= S390_CPU(cs
);
417 CPUS390XState
*env
= &cpu
->env
;
418 struct kvm_sregs sregs
;
419 struct kvm_regs regs
;
424 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
425 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
428 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
429 for (i
= 0; i
< 16; i
++) {
430 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
433 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
437 for (i
= 0; i
< 16; i
++) {
438 env
->regs
[i
] = regs
.gprs
[i
];
442 /* The ACRS and CRS */
443 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
444 for (i
= 0; i
< 16; i
++) {
445 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
446 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
449 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
453 for (i
= 0; i
< 16; i
++) {
454 env
->aregs
[i
] = sregs
.acrs
[i
];
455 env
->cregs
[i
] = sregs
.crs
[i
];
460 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
464 for (i
= 0; i
< 16; i
++) {
465 env
->fregs
[i
].ll
= fpu
.fprs
[i
];
470 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
471 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
474 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
475 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
476 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
477 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
478 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
479 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
482 * These ONE_REGS are not protected by a capability. As they are only
483 * necessary for migration we just trace a possible error, but don't
484 * return with an error return code.
486 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
487 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
488 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
489 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
490 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
493 /* pfault parameters */
494 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
495 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
496 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
497 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
498 } else if (cap_async_pf
) {
499 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
503 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
507 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
516 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
519 struct kvm_device_attr attr
= {
520 .group
= KVM_S390_VM_TOD
,
521 .attr
= KVM_S390_VM_TOD_LOW
,
522 .addr
= (uint64_t)tod_low
,
525 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
530 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
531 attr
.addr
= (uint64_t)tod_high
;
532 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
535 int kvm_s390_set_clock(uint8_t *tod_high
, uint64_t *tod_low
)
539 struct kvm_device_attr attr
= {
540 .group
= KVM_S390_VM_TOD
,
541 .attr
= KVM_S390_VM_TOD_LOW
,
542 .addr
= (uint64_t)tod_low
,
545 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
550 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
551 attr
.addr
= (uint64_t)tod_high
;
552 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
557 * @addr: the logical start address in guest memory
558 * @ar: the access register number
559 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
560 * @len: length that should be transfered
561 * @is_write: true = write, false = read
562 * Returns: 0 on success, non-zero if an exception or error occured
564 * Use KVM ioctl to read/write from/to guest memory. An access exception
565 * is injected into the vCPU in case of translation errors.
567 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
568 int len
, bool is_write
)
570 struct kvm_s390_mem_op mem_op
= {
572 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
574 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
575 : KVM_S390_MEMOP_LOGICAL_READ
,
576 .buf
= (uint64_t)hostbuf
,
585 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
588 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
590 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret
));
596 * Legacy layout for s390:
597 * Older S390 KVM requires the topmost vma of the RAM to be
598 * smaller than an system defined value, which is at least 256GB.
599 * Larger systems have larger values. We put the guest between
600 * the end of data segment (system break) and this value. We
601 * use 32GB as a base to have enough room for the system break
602 * to grow. We also have to use MAP parameters that avoid
603 * read-only mapping of guest pages.
605 static void *legacy_s390_alloc(size_t size
, uint64_t *align
)
609 mem
= mmap((void *) 0x800000000ULL
, size
,
610 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
611 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
612 return mem
== MAP_FAILED
? NULL
: mem
;
615 /* DIAG 501 is used for sw breakpoints */
616 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
618 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
621 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
622 sizeof(diag_501
), 0) ||
623 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)diag_501
,
624 sizeof(diag_501
), 1)) {
630 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
632 uint8_t t
[sizeof(diag_501
)];
634 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sizeof(diag_501
), 0)) {
636 } else if (memcmp(t
, diag_501
, sizeof(diag_501
))) {
638 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
639 sizeof(diag_501
), 1)) {
646 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
651 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
652 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
653 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
654 return &hw_breakpoints
[n
];
661 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
665 if (find_hw_breakpoint(addr
, len
, type
)) {
669 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
671 if (!hw_breakpoints
) {
672 nb_hw_breakpoints
= 0;
673 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
676 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
679 if (!hw_breakpoints
) {
680 nb_hw_breakpoints
= 0;
684 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
685 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
686 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
693 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
694 target_ulong len
, int type
)
697 case GDB_BREAKPOINT_HW
:
700 case GDB_WATCHPOINT_WRITE
:
704 type
= KVM_HW_WP_WRITE
;
709 return insert_hw_breakpoint(addr
, len
, type
);
712 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
713 target_ulong len
, int type
)
716 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
723 if (nb_hw_breakpoints
> 0) {
725 * In order to trim the array, move the last element to the position to
726 * be removed - if necessary.
728 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
729 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
731 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
733 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
735 g_free(hw_breakpoints
);
736 hw_breakpoints
= NULL
;
742 void kvm_arch_remove_all_hw_breakpoints(void)
744 nb_hw_breakpoints
= 0;
745 g_free(hw_breakpoints
);
746 hw_breakpoints
= NULL
;
749 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
753 if (nb_hw_breakpoints
> 0) {
754 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
755 dbg
->arch
.hw_bp
= hw_breakpoints
;
757 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
758 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
759 hw_breakpoints
[i
].addr
);
761 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
763 dbg
->arch
.nr_hw_bp
= 0;
764 dbg
->arch
.hw_bp
= NULL
;
768 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
772 void kvm_arch_post_run(CPUState
*cpu
, struct kvm_run
*run
)
776 int kvm_arch_process_async_events(CPUState
*cs
)
781 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
782 struct kvm_s390_interrupt
*interrupt
)
786 interrupt
->type
= irq
->type
;
788 case KVM_S390_INT_VIRTIO
:
789 interrupt
->parm
= irq
->u
.ext
.ext_params
;
791 case KVM_S390_INT_PFAULT_INIT
:
792 case KVM_S390_INT_PFAULT_DONE
:
793 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
795 case KVM_S390_PROGRAM_INT
:
796 interrupt
->parm
= irq
->u
.pgm
.code
;
798 case KVM_S390_SIGP_SET_PREFIX
:
799 interrupt
->parm
= irq
->u
.prefix
.address
;
801 case KVM_S390_INT_SERVICE
:
802 interrupt
->parm
= irq
->u
.ext
.ext_params
;
805 interrupt
->parm
= irq
->u
.mchk
.cr14
;
806 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
808 case KVM_S390_INT_EXTERNAL_CALL
:
809 interrupt
->parm
= irq
->u
.extcall
.code
;
811 case KVM_S390_INT_EMERGENCY
:
812 interrupt
->parm
= irq
->u
.emerg
.code
;
814 case KVM_S390_SIGP_STOP
:
815 case KVM_S390_RESTART
:
816 break; /* These types have no parameters */
817 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
818 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
819 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
820 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
821 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
830 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
832 struct kvm_s390_interrupt kvmint
= {};
833 CPUState
*cs
= CPU(cpu
);
836 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
838 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
842 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
844 fprintf(stderr
, "KVM failed to inject interrupt\n");
849 static void __kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
851 struct kvm_s390_interrupt kvmint
= {};
854 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
856 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
860 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
862 fprintf(stderr
, "KVM failed to inject interrupt\n");
867 void kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
869 static bool use_flic
= true;
873 r
= kvm_s390_inject_flic(irq
);
881 __kvm_s390_floating_interrupt(irq
);
884 void kvm_s390_virtio_irq(int config_change
, uint64_t token
)
886 struct kvm_s390_irq irq
= {
887 .type
= KVM_S390_INT_VIRTIO
,
888 .u
.ext
.ext_params
= config_change
,
889 .u
.ext
.ext_params2
= token
,
892 kvm_s390_floating_interrupt(&irq
);
895 void kvm_s390_service_interrupt(uint32_t parm
)
897 struct kvm_s390_irq irq
= {
898 .type
= KVM_S390_INT_SERVICE
,
899 .u
.ext
.ext_params
= parm
,
902 kvm_s390_floating_interrupt(&irq
);
905 static void enter_pgmcheck(S390CPU
*cpu
, uint16_t code
)
907 struct kvm_s390_irq irq
= {
908 .type
= KVM_S390_PROGRAM_INT
,
912 kvm_s390_vcpu_interrupt(cpu
, &irq
);
915 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
917 struct kvm_s390_irq irq
= {
918 .type
= KVM_S390_PROGRAM_INT
,
920 .u
.pgm
.trans_exc_code
= te_code
,
921 .u
.pgm
.exc_access_id
= te_code
& 3,
924 kvm_s390_vcpu_interrupt(cpu
, &irq
);
927 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
930 CPUS390XState
*env
= &cpu
->env
;
935 cpu_synchronize_state(CPU(cpu
));
936 sccb
= env
->regs
[ipbh0
& 0xf];
937 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
939 r
= sclp_service_call(env
, sccb
, code
);
941 enter_pgmcheck(cpu
, -r
);
949 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
951 CPUS390XState
*env
= &cpu
->env
;
953 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
955 cpu_synchronize_state(CPU(cpu
));
959 ioinst_handle_xsch(cpu
, env
->regs
[1]);
962 ioinst_handle_csch(cpu
, env
->regs
[1]);
965 ioinst_handle_hsch(cpu
, env
->regs
[1]);
968 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
971 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
974 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
);
977 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
980 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
981 fprintf(stderr
, "Spurious tsch intercept\n");
984 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
);
987 /* This should have been handled by kvm already. */
988 fprintf(stderr
, "Spurious tpi intercept\n");
991 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
992 run
->s390_sieic
.ipb
);
995 ioinst_handle_rsch(cpu
, env
->regs
[1]);
998 ioinst_handle_rchp(cpu
, env
->regs
[1]);
1001 /* We do not provide this instruction, it is suppressed. */
1004 ioinst_handle_sal(cpu
, env
->regs
[1]);
1007 /* Not provided, set CC = 3 for subchannel not operational */
1010 case PRIV_B2_SCLP_CALL
:
1011 rc
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
1015 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1022 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1025 CPUS390XState
*env
= &cpu
->env
;
1026 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1027 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1028 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1029 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1031 if (disp2
& 0x80000) {
1032 disp2
+= 0xfff00000;
1038 return (base2
? env
->regs
[base2
] : 0) +
1039 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1042 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1045 CPUS390XState
*env
= &cpu
->env
;
1046 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1047 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1048 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1050 if (disp2
& 0x80000) {
1051 disp2
+= 0xfff00000;
1057 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1060 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1062 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1064 return clp_service_call(cpu
, r2
);
1067 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1069 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1070 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1072 return pcilg_service_call(cpu
, r1
, r2
);
1075 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1077 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1078 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1080 return pcistg_service_call(cpu
, r1
, r2
);
1083 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1085 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1089 cpu_synchronize_state(CPU(cpu
));
1090 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1092 return stpcifc_service_call(cpu
, r1
, fiba
, ar
);
1095 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1101 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1103 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1104 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1106 return rpcit_service_call(cpu
, r1
, r2
);
1109 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1111 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1112 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1116 cpu_synchronize_state(CPU(cpu
));
1117 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1119 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
);
1122 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1124 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1128 cpu_synchronize_state(CPU(cpu
));
1129 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1131 return mpcifc_service_call(cpu
, r1
, fiba
, ar
);
1134 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1140 r
= kvm_clp_service_call(cpu
, run
);
1142 case PRIV_B9_PCISTG
:
1143 r
= kvm_pcistg_service_call(cpu
, run
);
1146 r
= kvm_pcilg_service_call(cpu
, run
);
1149 r
= kvm_rpcit_service_call(cpu
, run
);
1152 /* just inject exception */
1157 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1164 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1169 case PRIV_EB_PCISTB
:
1170 r
= kvm_pcistb_service_call(cpu
, run
);
1173 r
= kvm_sic_service_call(cpu
, run
);
1176 /* just inject exception */
1181 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1188 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1193 case PRIV_E3_MPCIFC
:
1194 r
= kvm_mpcifc_service_call(cpu
, run
);
1196 case PRIV_E3_STPCIFC
:
1197 r
= kvm_stpcifc_service_call(cpu
, run
);
1201 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1208 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1210 CPUS390XState
*env
= &cpu
->env
;
1213 cpu_synchronize_state(CPU(cpu
));
1214 ret
= s390_virtio_hypercall(env
);
1215 if (ret
== -EINVAL
) {
1216 enter_pgmcheck(cpu
, PGM_SPECIFICATION
);
1223 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1227 cpu_synchronize_state(CPU(cpu
));
1228 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1229 r3
= run
->s390_sieic
.ipa
& 0x000f;
1230 handle_diag_308(&cpu
->env
, r1
, r3
);
1233 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1235 CPUS390XState
*env
= &cpu
->env
;
1238 cpu_synchronize_state(CPU(cpu
));
1240 pc
= env
->psw
.addr
- 4;
1241 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1249 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1251 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1257 * For any diagnose call we support, bits 48-63 of the resulting
1258 * address specify the function code; the remainder is ignored.
1260 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1261 switch (func_code
) {
1263 kvm_handle_diag_308(cpu
, run
);
1265 case DIAG_KVM_HYPERCALL
:
1266 r
= handle_hypercall(cpu
, run
);
1268 case DIAG_KVM_BREAKPOINT
:
1269 r
= handle_sw_breakpoint(cpu
, run
);
1272 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1273 enter_pgmcheck(cpu
, PGM_SPECIFICATION
);
1280 typedef struct SigpInfo
{
1284 uint64_t *status_reg
;
1287 static void set_sigp_status(SigpInfo
*si
, uint64_t status
)
1289 *si
->status_reg
&= 0xffffffff00000000ULL
;
1290 *si
->status_reg
|= status
;
1291 si
->cc
= SIGP_CC_STATUS_STORED
;
1294 static void sigp_start(void *arg
)
1298 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1299 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1303 s390_cpu_set_state(CPU_STATE_OPERATING
, si
->cpu
);
1304 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1307 static void sigp_stop(void *arg
)
1310 struct kvm_s390_irq irq
= {
1311 .type
= KVM_S390_SIGP_STOP
,
1314 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_OPERATING
) {
1315 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1319 /* disabled wait - sleeping in user space */
1320 if (CPU(si
->cpu
)->halted
) {
1321 s390_cpu_set_state(CPU_STATE_STOPPED
, si
->cpu
);
1323 /* execute the stop function */
1324 si
->cpu
->env
.sigp_order
= SIGP_STOP
;
1325 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1327 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1330 #define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1331 #define SAVE_AREA_SIZE 512
1332 static int kvm_s390_store_status(S390CPU
*cpu
, hwaddr addr
, bool store_arch
)
1334 static const uint8_t ar_id
= 1;
1335 uint64_t ckc
= cpu
->env
.ckc
>> 8;
1337 hwaddr len
= SAVE_AREA_SIZE
;
1339 mem
= cpu_physical_memory_map(addr
, &len
, 1);
1343 if (len
!= SAVE_AREA_SIZE
) {
1344 cpu_physical_memory_unmap(mem
, len
, 1, 0);
1349 cpu_physical_memory_write(offsetof(LowCore
, ar_access_id
), &ar_id
, 1);
1351 memcpy(mem
, &cpu
->env
.fregs
, 128);
1352 memcpy(mem
+ 128, &cpu
->env
.regs
, 128);
1353 memcpy(mem
+ 256, &cpu
->env
.psw
, 16);
1354 memcpy(mem
+ 280, &cpu
->env
.psa
, 4);
1355 memcpy(mem
+ 284, &cpu
->env
.fpc
, 4);
1356 memcpy(mem
+ 292, &cpu
->env
.todpr
, 4);
1357 memcpy(mem
+ 296, &cpu
->env
.cputm
, 8);
1358 memcpy(mem
+ 304, &ckc
, 8);
1359 memcpy(mem
+ 320, &cpu
->env
.aregs
, 64);
1360 memcpy(mem
+ 384, &cpu
->env
.cregs
, 128);
1362 cpu_physical_memory_unmap(mem
, len
, 1, len
);
1367 static void sigp_stop_and_store_status(void *arg
)
1370 struct kvm_s390_irq irq
= {
1371 .type
= KVM_S390_SIGP_STOP
,
1374 /* disabled wait - sleeping in user space */
1375 if (s390_cpu_get_state(si
->cpu
) == CPU_STATE_OPERATING
&&
1376 CPU(si
->cpu
)->halted
) {
1377 s390_cpu_set_state(CPU_STATE_STOPPED
, si
->cpu
);
1380 switch (s390_cpu_get_state(si
->cpu
)) {
1381 case CPU_STATE_OPERATING
:
1382 si
->cpu
->env
.sigp_order
= SIGP_STOP_STORE_STATUS
;
1383 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1384 /* store will be performed when handling the stop intercept */
1386 case CPU_STATE_STOPPED
:
1387 /* already stopped, just store the status */
1388 cpu_synchronize_state(CPU(si
->cpu
));
1389 kvm_s390_store_status(si
->cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
, true);
1392 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1395 static void sigp_store_status_at_address(void *arg
)
1398 uint32_t address
= si
->param
& 0x7ffffe00u
;
1400 /* cpu has to be stopped */
1401 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1402 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1406 cpu_synchronize_state(CPU(si
->cpu
));
1408 if (kvm_s390_store_status(si
->cpu
, address
, false)) {
1409 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1412 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1415 static void sigp_restart(void *arg
)
1418 struct kvm_s390_irq irq
= {
1419 .type
= KVM_S390_RESTART
,
1422 switch (s390_cpu_get_state(si
->cpu
)) {
1423 case CPU_STATE_STOPPED
:
1424 /* the restart irq has to be delivered prior to any other pending irq */
1425 cpu_synchronize_state(CPU(si
->cpu
));
1426 do_restart_interrupt(&si
->cpu
->env
);
1427 s390_cpu_set_state(CPU_STATE_OPERATING
, si
->cpu
);
1429 case CPU_STATE_OPERATING
:
1430 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1433 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1436 int kvm_s390_cpu_restart(S390CPU
*cpu
)
1442 run_on_cpu(CPU(cpu
), sigp_restart
, &si
);
1443 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu
->env
);
1447 static void sigp_initial_cpu_reset(void *arg
)
1450 CPUState
*cs
= CPU(si
->cpu
);
1451 S390CPUClass
*scc
= S390_CPU_GET_CLASS(si
->cpu
);
1453 cpu_synchronize_state(cs
);
1454 scc
->initial_cpu_reset(cs
);
1455 cpu_synchronize_post_reset(cs
);
1456 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1459 static void sigp_cpu_reset(void *arg
)
1462 CPUState
*cs
= CPU(si
->cpu
);
1463 S390CPUClass
*scc
= S390_CPU_GET_CLASS(si
->cpu
);
1465 cpu_synchronize_state(cs
);
1467 cpu_synchronize_post_reset(cs
);
1468 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1471 static void sigp_set_prefix(void *arg
)
1474 uint32_t addr
= si
->param
& 0x7fffe000u
;
1476 cpu_synchronize_state(CPU(si
->cpu
));
1478 if (!address_space_access_valid(&address_space_memory
, addr
,
1479 sizeof(struct LowCore
), false)) {
1480 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1484 /* cpu has to be stopped */
1485 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1486 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1490 si
->cpu
->env
.psa
= addr
;
1491 cpu_synchronize_post_init(CPU(si
->cpu
));
1492 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1495 static int handle_sigp_single_dst(S390CPU
*dst_cpu
, uint8_t order
,
1496 uint64_t param
, uint64_t *status_reg
)
1501 .status_reg
= status_reg
,
1504 /* cpu available? */
1505 if (dst_cpu
== NULL
) {
1506 return SIGP_CC_NOT_OPERATIONAL
;
1509 /* only resets can break pending orders */
1510 if (dst_cpu
->env
.sigp_order
!= 0 &&
1511 order
!= SIGP_CPU_RESET
&&
1512 order
!= SIGP_INITIAL_CPU_RESET
) {
1513 return SIGP_CC_BUSY
;
1518 run_on_cpu(CPU(dst_cpu
), sigp_start
, &si
);
1521 run_on_cpu(CPU(dst_cpu
), sigp_stop
, &si
);
1524 run_on_cpu(CPU(dst_cpu
), sigp_restart
, &si
);
1526 case SIGP_STOP_STORE_STATUS
:
1527 run_on_cpu(CPU(dst_cpu
), sigp_stop_and_store_status
, &si
);
1529 case SIGP_STORE_STATUS_ADDR
:
1530 run_on_cpu(CPU(dst_cpu
), sigp_store_status_at_address
, &si
);
1532 case SIGP_SET_PREFIX
:
1533 run_on_cpu(CPU(dst_cpu
), sigp_set_prefix
, &si
);
1535 case SIGP_INITIAL_CPU_RESET
:
1536 run_on_cpu(CPU(dst_cpu
), sigp_initial_cpu_reset
, &si
);
1538 case SIGP_CPU_RESET
:
1539 run_on_cpu(CPU(dst_cpu
), sigp_cpu_reset
, &si
);
1542 DPRINTF("KVM: unknown SIGP: 0x%x\n", order
);
1543 set_sigp_status(&si
, SIGP_STAT_INVALID_ORDER
);
1549 static int sigp_set_architecture(S390CPU
*cpu
, uint32_t param
,
1550 uint64_t *status_reg
)
1555 /* due to the BQL, we are the only active cpu */
1556 CPU_FOREACH(cur_cs
) {
1557 cur_cpu
= S390_CPU(cur_cs
);
1558 if (cur_cpu
->env
.sigp_order
!= 0) {
1559 return SIGP_CC_BUSY
;
1561 cpu_synchronize_state(cur_cs
);
1562 /* all but the current one have to be stopped */
1563 if (cur_cpu
!= cpu
&&
1564 s390_cpu_get_state(cur_cpu
) != CPU_STATE_STOPPED
) {
1565 *status_reg
&= 0xffffffff00000000ULL
;
1566 *status_reg
|= SIGP_STAT_INCORRECT_STATE
;
1567 return SIGP_CC_STATUS_STORED
;
1571 switch (param
& 0xff) {
1572 case SIGP_MODE_ESA_S390
:
1574 return SIGP_CC_NOT_OPERATIONAL
;
1575 case SIGP_MODE_Z_ARCH_TRANS_ALL_PSW
:
1576 case SIGP_MODE_Z_ARCH_TRANS_CUR_PSW
:
1577 CPU_FOREACH(cur_cs
) {
1578 cur_cpu
= S390_CPU(cur_cs
);
1579 cur_cpu
->env
.pfault_token
= -1UL;
1583 *status_reg
&= 0xffffffff00000000ULL
;
1584 *status_reg
|= SIGP_STAT_INVALID_PARAMETER
;
1585 return SIGP_CC_STATUS_STORED
;
1588 return SIGP_CC_ORDER_CODE_ACCEPTED
;
1591 #define SIGP_ORDER_MASK 0x000000ff
1593 static int handle_sigp(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1595 CPUS390XState
*env
= &cpu
->env
;
1596 const uint8_t r1
= ipa1
>> 4;
1597 const uint8_t r3
= ipa1
& 0x0f;
1600 uint64_t *status_reg
;
1602 S390CPU
*dst_cpu
= NULL
;
1604 cpu_synchronize_state(CPU(cpu
));
1606 /* get order code */
1607 order
= decode_basedisp_rs(env
, run
->s390_sieic
.ipb
, NULL
)
1609 status_reg
= &env
->regs
[r1
];
1610 param
= (r1
% 2) ? env
->regs
[r1
] : env
->regs
[r1
+ 1];
1614 ret
= sigp_set_architecture(cpu
, param
, status_reg
);
1617 /* all other sigp orders target a single vcpu */
1618 dst_cpu
= s390_cpu_addr2state(env
->regs
[r3
]);
1619 ret
= handle_sigp_single_dst(dst_cpu
, order
, param
, status_reg
);
1622 trace_kvm_sigp_finished(order
, CPU(cpu
)->cpu_index
,
1623 dst_cpu
? CPU(dst_cpu
)->cpu_index
: -1, ret
);
1633 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1635 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1636 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1639 DPRINTF("handle_instruction 0x%x 0x%x\n",
1640 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1643 r
= handle_b2(cpu
, run
, ipa1
);
1646 r
= handle_b9(cpu
, run
, ipa1
);
1649 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1652 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1655 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1658 r
= handle_sigp(cpu
, run
, ipa1
);
1664 enter_pgmcheck(cpu
, 0x0001);
1670 static bool is_special_wait_psw(CPUState
*cs
)
1672 /* signal quiesce */
1673 return cs
->kvm_run
->psw_addr
== 0xfffUL
;
1676 static void guest_panicked(void)
1678 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE
,
1680 vm_stop(RUN_STATE_GUEST_PANICKED
);
1683 static void unmanageable_intercept(S390CPU
*cpu
, const char *str
, int pswoffset
)
1685 CPUState
*cs
= CPU(cpu
);
1687 error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1688 str
, cs
->cpu_index
, ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
),
1689 ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
+ 8));
1694 static int handle_intercept(S390CPU
*cpu
)
1696 CPUState
*cs
= CPU(cpu
);
1697 struct kvm_run
*run
= cs
->kvm_run
;
1698 int icpt_code
= run
->s390_sieic
.icptcode
;
1701 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1702 (long)cs
->kvm_run
->psw_addr
);
1703 switch (icpt_code
) {
1704 case ICPT_INSTRUCTION
:
1705 r
= handle_instruction(cpu
, run
);
1708 unmanageable_intercept(cpu
, "program interrupt",
1709 offsetof(LowCore
, program_new_psw
));
1713 unmanageable_intercept(cpu
, "external interrupt",
1714 offsetof(LowCore
, external_new_psw
));
1718 /* disabled wait, since enabled wait is handled in kernel */
1719 cpu_synchronize_state(cs
);
1720 if (s390_cpu_halt(cpu
) == 0) {
1721 if (is_special_wait_psw(cs
)) {
1722 qemu_system_shutdown_request();
1730 if (s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
) == 0) {
1731 qemu_system_shutdown_request();
1733 if (cpu
->env
.sigp_order
== SIGP_STOP_STORE_STATUS
) {
1734 kvm_s390_store_status(cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
,
1737 cpu
->env
.sigp_order
= 0;
1740 case ICPT_SOFT_INTERCEPT
:
1741 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1745 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1749 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1757 static int handle_tsch(S390CPU
*cpu
)
1759 CPUState
*cs
= CPU(cpu
);
1760 struct kvm_run
*run
= cs
->kvm_run
;
1763 cpu_synchronize_state(cs
);
1765 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
);
1769 * If an I/O interrupt had been dequeued, we have to reinject it.
1771 if (run
->s390_tsch
.dequeued
) {
1772 kvm_s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1773 run
->s390_tsch
.subchannel_nr
,
1774 run
->s390_tsch
.io_int_parm
,
1775 run
->s390_tsch
.io_int_word
);
1782 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
1784 struct sysib_322 sysib
;
1787 if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
1790 /* Shift the stack of Extended Names to prepare for our own data */
1791 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
1792 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
1793 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1794 * assumed it's not capable of managing Extended Names for lower levels.
1796 for (del
= 1; del
< sysib
.count
; del
++) {
1797 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
1801 if (del
< sysib
.count
) {
1802 memset(sysib
.ext_names
[del
], 0,
1803 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
1805 /* Insert short machine name in EBCDIC, padded with blanks */
1807 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
1808 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
1809 strlen(qemu_name
)));
1811 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
1812 memset(sysib
.ext_names
[0], 0, sizeof(sysib
.ext_names
[0]));
1813 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1814 * considered by s390 as not capable of providing any Extended Name.
1815 * Therefore if no name was specified on qemu invocation, we go with the
1816 * same "KVMguest" default, which KVM has filled into short name field.
1819 strncpy((char *)sysib
.ext_names
[0], qemu_name
,
1820 sizeof(sysib
.ext_names
[0]));
1822 strcpy((char *)sysib
.ext_names
[0], "KVMguest");
1825 memcpy(sysib
.vm
[0].uuid
, qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
1827 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
1830 static int handle_stsi(S390CPU
*cpu
)
1832 CPUState
*cs
= CPU(cpu
);
1833 struct kvm_run
*run
= cs
->kvm_run
;
1835 switch (run
->s390_stsi
.fc
) {
1837 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
1840 /* Only sysib 3.2.2 needs post-handling for now. */
1841 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
1848 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1850 CPUState
*cs
= CPU(cpu
);
1851 struct kvm_run
*run
= cs
->kvm_run
;
1854 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1856 switch (arch_info
->type
) {
1857 case KVM_HW_WP_WRITE
:
1858 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1859 cs
->watchpoint_hit
= &hw_watchpoint
;
1860 hw_watchpoint
.vaddr
= arch_info
->addr
;
1861 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1866 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1870 case KVM_SINGLESTEP
:
1871 if (cs
->singlestep_enabled
) {
1882 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1884 S390CPU
*cpu
= S390_CPU(cs
);
1887 switch (run
->exit_reason
) {
1888 case KVM_EXIT_S390_SIEIC
:
1889 ret
= handle_intercept(cpu
);
1891 case KVM_EXIT_S390_RESET
:
1892 s390_reipl_request();
1894 case KVM_EXIT_S390_TSCH
:
1895 ret
= handle_tsch(cpu
);
1897 case KVM_EXIT_S390_STSI
:
1898 ret
= handle_stsi(cpu
);
1900 case KVM_EXIT_DEBUG
:
1901 ret
= kvm_arch_handle_debug_exit(cpu
);
1904 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
1909 ret
= EXCP_INTERRUPT
;
1914 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
1919 int kvm_arch_on_sigbus_vcpu(CPUState
*cpu
, int code
, void *addr
)
1924 int kvm_arch_on_sigbus(int code
, void *addr
)
1929 void kvm_s390_io_interrupt(uint16_t subchannel_id
,
1930 uint16_t subchannel_nr
, uint32_t io_int_parm
,
1931 uint32_t io_int_word
)
1933 struct kvm_s390_irq irq
= {
1934 .u
.io
.subchannel_id
= subchannel_id
,
1935 .u
.io
.subchannel_nr
= subchannel_nr
,
1936 .u
.io
.io_int_parm
= io_int_parm
,
1937 .u
.io
.io_int_word
= io_int_word
,
1940 if (io_int_word
& IO_INT_WORD_AI
) {
1941 irq
.type
= KVM_S390_INT_IO(1, 0, 0, 0);
1943 irq
.type
= ((subchannel_id
& 0xff00) << 24) |
1944 ((subchannel_id
& 0x00060) << 22) | (subchannel_nr
<< 16);
1946 kvm_s390_floating_interrupt(&irq
);
1949 void kvm_s390_crw_mchk(void)
1951 struct kvm_s390_irq irq
= {
1952 .type
= KVM_S390_MCHK
,
1953 .u
.mchk
.cr14
= 1 << 28,
1954 .u
.mchk
.mcic
= 0x00400f1d40330000ULL
,
1956 kvm_s390_floating_interrupt(&irq
);
1959 void kvm_s390_enable_css_support(S390CPU
*cpu
)
1963 /* Activate host kernel channel subsystem support. */
1964 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
1968 void kvm_arch_init_irq_routing(KVMState
*s
)
1971 * Note that while irqchip capabilities generally imply that cpustates
1972 * are handled in-kernel, it is not true for s390 (yet); therefore, we
1973 * have to override the common code kvm_halt_in_kernel_allowed setting.
1975 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
1976 kvm_gsi_routing_allowed
= true;
1977 kvm_halt_in_kernel_allowed
= false;
1981 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
1982 int vq
, bool assign
)
1984 struct kvm_ioeventfd kick
= {
1985 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
1986 KVM_IOEVENTFD_FLAG_DATAMATCH
,
1987 .fd
= event_notifier_get_fd(notifier
),
1992 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
1996 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
1998 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
2001 int kvm_s390_get_memslot_count(KVMState
*s
)
2003 return kvm_check_extension(s
, KVM_CAP_NR_MEMSLOTS
);
2006 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
2008 struct kvm_mp_state mp_state
= {};
2011 /* the kvm part might not have been initialized yet */
2012 if (CPU(cpu
)->kvm_state
== NULL
) {
2016 switch (cpu_state
) {
2017 case CPU_STATE_STOPPED
:
2018 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
2020 case CPU_STATE_CHECK_STOP
:
2021 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
2023 case CPU_STATE_OPERATING
:
2024 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
2026 case CPU_STATE_LOAD
:
2027 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
2030 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2035 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
2037 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
2044 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2045 uint64_t address
, uint32_t data
)
2047 S390PCIBusDevice
*pbdev
;
2048 uint32_t fid
= data
>> ZPCI_MSI_VEC_BITS
;
2049 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2051 pbdev
= s390_pci_find_dev_by_fid(fid
);
2053 DPRINTF("add_msi_route no dev\n");
2057 pbdev
->routes
.adapter
.ind_offset
= vec
;
2059 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2061 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2062 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2063 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2064 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
;
2065 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;