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"
48 /* #define DEBUG_KVM */
51 #define DPRINTF(fmt, ...) \
52 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
54 #define DPRINTF(fmt, ...) \
58 #define kvm_vm_check_mem_attr(s, attr) \
59 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
61 #define IPA0_DIAG 0x8300
62 #define IPA0_SIGP 0xae00
63 #define IPA0_B2 0xb200
64 #define IPA0_B9 0xb900
65 #define IPA0_EB 0xeb00
66 #define IPA0_E3 0xe300
68 #define PRIV_B2_SCLP_CALL 0x20
69 #define PRIV_B2_CSCH 0x30
70 #define PRIV_B2_HSCH 0x31
71 #define PRIV_B2_MSCH 0x32
72 #define PRIV_B2_SSCH 0x33
73 #define PRIV_B2_STSCH 0x34
74 #define PRIV_B2_TSCH 0x35
75 #define PRIV_B2_TPI 0x36
76 #define PRIV_B2_SAL 0x37
77 #define PRIV_B2_RSCH 0x38
78 #define PRIV_B2_STCRW 0x39
79 #define PRIV_B2_STCPS 0x3a
80 #define PRIV_B2_RCHP 0x3b
81 #define PRIV_B2_SCHM 0x3c
82 #define PRIV_B2_CHSC 0x5f
83 #define PRIV_B2_SIGA 0x74
84 #define PRIV_B2_XSCH 0x76
86 #define PRIV_EB_SQBS 0x8a
87 #define PRIV_EB_PCISTB 0xd0
88 #define PRIV_EB_SIC 0xd1
90 #define PRIV_B9_EQBS 0x9c
91 #define PRIV_B9_CLP 0xa0
92 #define PRIV_B9_PCISTG 0xd0
93 #define PRIV_B9_PCILG 0xd2
94 #define PRIV_B9_RPCIT 0xd3
96 #define PRIV_E3_MPCIFC 0xd0
97 #define PRIV_E3_STPCIFC 0xd4
99 #define DIAG_IPL 0x308
100 #define DIAG_KVM_HYPERCALL 0x500
101 #define DIAG_KVM_BREAKPOINT 0x501
103 #define ICPT_INSTRUCTION 0x04
104 #define ICPT_PROGRAM 0x08
105 #define ICPT_EXT_INT 0x14
106 #define ICPT_WAITPSW 0x1c
107 #define ICPT_SOFT_INTERCEPT 0x24
108 #define ICPT_CPU_STOP 0x28
111 static CPUWatchpoint hw_watchpoint
;
113 * We don't use a list because this structure is also used to transmit the
114 * hardware breakpoints to the kernel.
116 static struct kvm_hw_breakpoint
*hw_breakpoints
;
117 static int nb_hw_breakpoints
;
119 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
123 static int cap_sync_regs
;
124 static int cap_async_pf
;
126 static void *legacy_s390_alloc(size_t size
, uint64_t *align
);
128 static int kvm_s390_query_mem_limit(KVMState
*s
, uint64_t *memory_limit
)
130 struct kvm_device_attr attr
= {
131 .group
= KVM_S390_VM_MEM_CTRL
,
132 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
133 .addr
= (uint64_t) memory_limit
,
136 return kvm_vm_ioctl(s
, KVM_GET_DEVICE_ATTR
, &attr
);
139 int kvm_s390_set_mem_limit(KVMState
*s
, uint64_t new_limit
, uint64_t *hw_limit
)
143 struct kvm_device_attr attr
= {
144 .group
= KVM_S390_VM_MEM_CTRL
,
145 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
146 .addr
= (uint64_t) &new_limit
,
149 if (!kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
153 rc
= kvm_s390_query_mem_limit(s
, hw_limit
);
156 } else if (*hw_limit
< new_limit
) {
160 return kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
163 void kvm_s390_clear_cmma_callback(void *opaque
)
166 KVMState
*s
= opaque
;
167 struct kvm_device_attr attr
= {
168 .group
= KVM_S390_VM_MEM_CTRL
,
169 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
172 rc
= kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
173 trace_kvm_clear_cmma(rc
);
176 static void kvm_s390_enable_cmma(KVMState
*s
)
179 struct kvm_device_attr attr
= {
180 .group
= KVM_S390_VM_MEM_CTRL
,
181 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
184 if (!kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_ENABLE_CMMA
) ||
185 !kvm_vm_check_mem_attr(s
, KVM_S390_VM_MEM_CLR_CMMA
)) {
189 rc
= kvm_vm_ioctl(s
, KVM_SET_DEVICE_ATTR
, &attr
);
191 qemu_register_reset(kvm_s390_clear_cmma_callback
, s
);
193 trace_kvm_enable_cmma(rc
);
196 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
198 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
199 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
201 kvm_s390_enable_cmma(s
);
203 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
204 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
205 phys_mem_set_alloc(legacy_s390_alloc
);
208 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
213 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
215 return cpu
->cpu_index
;
218 int kvm_arch_init_vcpu(CPUState
*cs
)
220 S390CPU
*cpu
= S390_CPU(cs
);
221 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
225 void kvm_s390_reset_vcpu(S390CPU
*cpu
)
227 CPUState
*cs
= CPU(cpu
);
229 /* The initial reset call is needed here to reset in-kernel
230 * vcpu data that we can't access directly from QEMU
231 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
232 * Before this ioctl cpu_synchronize_state() is called in common kvm
234 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
)) {
235 error_report("Initial CPU reset failed on CPU %i", cs
->cpu_index
);
239 static int can_sync_regs(CPUState
*cs
, int regs
)
241 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
244 int kvm_arch_put_registers(CPUState
*cs
, int level
)
246 S390CPU
*cpu
= S390_CPU(cs
);
247 CPUS390XState
*env
= &cpu
->env
;
248 struct kvm_sregs sregs
;
249 struct kvm_regs regs
;
250 struct kvm_fpu fpu
= {};
254 /* always save the PSW and the GPRS*/
255 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
256 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
258 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
259 for (i
= 0; i
< 16; i
++) {
260 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
261 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
264 for (i
= 0; i
< 16; i
++) {
265 regs
.gprs
[i
] = env
->regs
[i
];
267 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
274 for (i
= 0; i
< 16; i
++) {
275 fpu
.fprs
[i
] = env
->fregs
[i
].ll
;
279 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
284 /* Do we need to save more than that? */
285 if (level
== KVM_PUT_RUNTIME_STATE
) {
289 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
290 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
291 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
292 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
293 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
294 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
295 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
298 * These ONE_REGS are not protected by a capability. As they are only
299 * necessary for migration we just trace a possible error, but don't
300 * return with an error return code.
302 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
303 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
304 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
305 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
306 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
309 /* pfault parameters */
310 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
311 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
312 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
313 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
314 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
315 } else if (cap_async_pf
) {
316 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
320 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
324 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
330 /* access registers and control registers*/
331 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
332 for (i
= 0; i
< 16; i
++) {
333 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
334 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
336 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
337 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
339 for (i
= 0; i
< 16; i
++) {
340 sregs
.acrs
[i
] = env
->aregs
[i
];
341 sregs
.crs
[i
] = env
->cregs
[i
];
343 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
349 /* Finally the prefix */
350 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
351 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
352 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
354 /* prefix is only supported via sync regs */
359 int kvm_arch_get_registers(CPUState
*cs
)
361 S390CPU
*cpu
= S390_CPU(cs
);
362 CPUS390XState
*env
= &cpu
->env
;
363 struct kvm_sregs sregs
;
364 struct kvm_regs regs
;
369 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
370 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
373 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
374 for (i
= 0; i
< 16; i
++) {
375 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
378 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
382 for (i
= 0; i
< 16; i
++) {
383 env
->regs
[i
] = regs
.gprs
[i
];
387 /* The ACRS and CRS */
388 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
389 for (i
= 0; i
< 16; i
++) {
390 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
391 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
394 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
398 for (i
= 0; i
< 16; i
++) {
399 env
->aregs
[i
] = sregs
.acrs
[i
];
400 env
->cregs
[i
] = sregs
.crs
[i
];
405 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
409 for (i
= 0; i
< 16; i
++) {
410 env
->fregs
[i
].ll
= fpu
.fprs
[i
];
415 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
416 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
419 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
420 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
421 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
422 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
423 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
424 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
427 * These ONE_REGS are not protected by a capability. As they are only
428 * necessary for migration we just trace a possible error, but don't
429 * return with an error return code.
431 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
432 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
433 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
434 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
435 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
438 /* pfault parameters */
439 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
440 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
441 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
442 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
443 } else if (cap_async_pf
) {
444 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
448 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
452 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
461 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
464 struct kvm_device_attr attr
= {
465 .group
= KVM_S390_VM_TOD
,
466 .attr
= KVM_S390_VM_TOD_LOW
,
467 .addr
= (uint64_t)tod_low
,
470 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
475 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
476 attr
.addr
= (uint64_t)tod_high
;
477 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
480 int kvm_s390_set_clock(uint8_t *tod_high
, uint64_t *tod_low
)
484 struct kvm_device_attr attr
= {
485 .group
= KVM_S390_VM_TOD
,
486 .attr
= KVM_S390_VM_TOD_LOW
,
487 .addr
= (uint64_t)tod_low
,
490 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
495 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
496 attr
.addr
= (uint64_t)tod_high
;
497 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
501 * Legacy layout for s390:
502 * Older S390 KVM requires the topmost vma of the RAM to be
503 * smaller than an system defined value, which is at least 256GB.
504 * Larger systems have larger values. We put the guest between
505 * the end of data segment (system break) and this value. We
506 * use 32GB as a base to have enough room for the system break
507 * to grow. We also have to use MAP parameters that avoid
508 * read-only mapping of guest pages.
510 static void *legacy_s390_alloc(size_t size
, uint64_t *align
)
514 mem
= mmap((void *) 0x800000000ULL
, size
,
515 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
516 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
517 return mem
== MAP_FAILED
? NULL
: mem
;
520 /* DIAG 501 is used for sw breakpoints */
521 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
523 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
526 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
527 sizeof(diag_501
), 0) ||
528 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)diag_501
,
529 sizeof(diag_501
), 1)) {
535 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
537 uint8_t t
[sizeof(diag_501
)];
539 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sizeof(diag_501
), 0)) {
541 } else if (memcmp(t
, diag_501
, sizeof(diag_501
))) {
543 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
544 sizeof(diag_501
), 1)) {
551 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
556 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
557 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
558 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
559 return &hw_breakpoints
[n
];
566 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
570 if (find_hw_breakpoint(addr
, len
, type
)) {
574 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
576 if (!hw_breakpoints
) {
577 nb_hw_breakpoints
= 0;
578 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
581 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
584 if (!hw_breakpoints
) {
585 nb_hw_breakpoints
= 0;
589 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
590 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
591 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
598 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
599 target_ulong len
, int type
)
602 case GDB_BREAKPOINT_HW
:
605 case GDB_WATCHPOINT_WRITE
:
609 type
= KVM_HW_WP_WRITE
;
614 return insert_hw_breakpoint(addr
, len
, type
);
617 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
618 target_ulong len
, int type
)
621 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
628 if (nb_hw_breakpoints
> 0) {
630 * In order to trim the array, move the last element to the position to
631 * be removed - if necessary.
633 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
634 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
636 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
638 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
640 g_free(hw_breakpoints
);
641 hw_breakpoints
= NULL
;
647 void kvm_arch_remove_all_hw_breakpoints(void)
649 nb_hw_breakpoints
= 0;
650 g_free(hw_breakpoints
);
651 hw_breakpoints
= NULL
;
654 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
658 if (nb_hw_breakpoints
> 0) {
659 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
660 dbg
->arch
.hw_bp
= hw_breakpoints
;
662 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
663 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
664 hw_breakpoints
[i
].addr
);
666 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
668 dbg
->arch
.nr_hw_bp
= 0;
669 dbg
->arch
.hw_bp
= NULL
;
673 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
677 void kvm_arch_post_run(CPUState
*cpu
, struct kvm_run
*run
)
681 int kvm_arch_process_async_events(CPUState
*cs
)
686 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
687 struct kvm_s390_interrupt
*interrupt
)
691 interrupt
->type
= irq
->type
;
693 case KVM_S390_INT_VIRTIO
:
694 interrupt
->parm
= irq
->u
.ext
.ext_params
;
696 case KVM_S390_INT_PFAULT_INIT
:
697 case KVM_S390_INT_PFAULT_DONE
:
698 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
700 case KVM_S390_PROGRAM_INT
:
701 interrupt
->parm
= irq
->u
.pgm
.code
;
703 case KVM_S390_SIGP_SET_PREFIX
:
704 interrupt
->parm
= irq
->u
.prefix
.address
;
706 case KVM_S390_INT_SERVICE
:
707 interrupt
->parm
= irq
->u
.ext
.ext_params
;
710 interrupt
->parm
= irq
->u
.mchk
.cr14
;
711 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
713 case KVM_S390_INT_EXTERNAL_CALL
:
714 interrupt
->parm
= irq
->u
.extcall
.code
;
716 case KVM_S390_INT_EMERGENCY
:
717 interrupt
->parm
= irq
->u
.emerg
.code
;
719 case KVM_S390_SIGP_STOP
:
720 case KVM_S390_RESTART
:
721 break; /* These types have no parameters */
722 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
723 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
724 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
725 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
726 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
735 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
737 struct kvm_s390_interrupt kvmint
= {};
738 CPUState
*cs
= CPU(cpu
);
741 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
743 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
747 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
749 fprintf(stderr
, "KVM failed to inject interrupt\n");
754 static void __kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
756 struct kvm_s390_interrupt kvmint
= {};
759 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
761 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
765 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
767 fprintf(stderr
, "KVM failed to inject interrupt\n");
772 void kvm_s390_floating_interrupt(struct kvm_s390_irq
*irq
)
774 static bool use_flic
= true;
778 r
= kvm_s390_inject_flic(irq
);
786 __kvm_s390_floating_interrupt(irq
);
789 void kvm_s390_virtio_irq(int config_change
, uint64_t token
)
791 struct kvm_s390_irq irq
= {
792 .type
= KVM_S390_INT_VIRTIO
,
793 .u
.ext
.ext_params
= config_change
,
794 .u
.ext
.ext_params2
= token
,
797 kvm_s390_floating_interrupt(&irq
);
800 void kvm_s390_service_interrupt(uint32_t parm
)
802 struct kvm_s390_irq irq
= {
803 .type
= KVM_S390_INT_SERVICE
,
804 .u
.ext
.ext_params
= parm
,
807 kvm_s390_floating_interrupt(&irq
);
810 static void enter_pgmcheck(S390CPU
*cpu
, uint16_t code
)
812 struct kvm_s390_irq irq
= {
813 .type
= KVM_S390_PROGRAM_INT
,
817 kvm_s390_vcpu_interrupt(cpu
, &irq
);
820 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
822 struct kvm_s390_irq irq
= {
823 .type
= KVM_S390_PROGRAM_INT
,
825 .u
.pgm
.trans_exc_code
= te_code
,
826 .u
.pgm
.exc_access_id
= te_code
& 3,
829 kvm_s390_vcpu_interrupt(cpu
, &irq
);
832 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
835 CPUS390XState
*env
= &cpu
->env
;
840 cpu_synchronize_state(CPU(cpu
));
841 sccb
= env
->regs
[ipbh0
& 0xf];
842 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
844 r
= sclp_service_call(env
, sccb
, code
);
846 enter_pgmcheck(cpu
, -r
);
854 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
856 CPUS390XState
*env
= &cpu
->env
;
858 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
860 cpu_synchronize_state(CPU(cpu
));
864 ioinst_handle_xsch(cpu
, env
->regs
[1]);
867 ioinst_handle_csch(cpu
, env
->regs
[1]);
870 ioinst_handle_hsch(cpu
, env
->regs
[1]);
873 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
876 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
879 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
);
882 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
885 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
886 fprintf(stderr
, "Spurious tsch intercept\n");
889 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
);
892 /* This should have been handled by kvm already. */
893 fprintf(stderr
, "Spurious tpi intercept\n");
896 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
897 run
->s390_sieic
.ipb
);
900 ioinst_handle_rsch(cpu
, env
->regs
[1]);
903 ioinst_handle_rchp(cpu
, env
->regs
[1]);
906 /* We do not provide this instruction, it is suppressed. */
909 ioinst_handle_sal(cpu
, env
->regs
[1]);
912 /* Not provided, set CC = 3 for subchannel not operational */
915 case PRIV_B2_SCLP_CALL
:
916 rc
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
920 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
927 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
)
929 CPUS390XState
*env
= &cpu
->env
;
930 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
931 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
932 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
933 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
935 if (disp2
& 0x80000) {
939 return (base2
? env
->regs
[base2
] : 0) +
940 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
943 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
)
945 CPUS390XState
*env
= &cpu
->env
;
946 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
947 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
948 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
950 if (disp2
& 0x80000) {
954 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
957 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
959 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
961 return clp_service_call(cpu
, r2
);
964 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
966 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
967 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
969 return pcilg_service_call(cpu
, r1
, r2
);
972 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
974 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
975 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
977 return pcistg_service_call(cpu
, r1
, r2
);
980 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
982 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
985 cpu_synchronize_state(CPU(cpu
));
986 fiba
= get_base_disp_rxy(cpu
, run
);
988 return stpcifc_service_call(cpu
, r1
, fiba
);
991 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
997 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
999 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1000 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1002 return rpcit_service_call(cpu
, r1
, r2
);
1005 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1007 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1008 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1011 cpu_synchronize_state(CPU(cpu
));
1012 gaddr
= get_base_disp_rsy(cpu
, run
);
1014 return pcistb_service_call(cpu
, r1
, r3
, gaddr
);
1017 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1019 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1022 cpu_synchronize_state(CPU(cpu
));
1023 fiba
= get_base_disp_rxy(cpu
, run
);
1025 return mpcifc_service_call(cpu
, r1
, fiba
);
1028 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1034 r
= kvm_clp_service_call(cpu
, run
);
1036 case PRIV_B9_PCISTG
:
1037 r
= kvm_pcistg_service_call(cpu
, run
);
1040 r
= kvm_pcilg_service_call(cpu
, run
);
1043 r
= kvm_rpcit_service_call(cpu
, run
);
1046 /* just inject exception */
1051 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1058 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1063 case PRIV_EB_PCISTB
:
1064 r
= kvm_pcistb_service_call(cpu
, run
);
1067 r
= kvm_sic_service_call(cpu
, run
);
1070 /* just inject exception */
1075 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1082 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1087 case PRIV_E3_MPCIFC
:
1088 r
= kvm_mpcifc_service_call(cpu
, run
);
1090 case PRIV_E3_STPCIFC
:
1091 r
= kvm_stpcifc_service_call(cpu
, run
);
1095 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1102 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1104 CPUS390XState
*env
= &cpu
->env
;
1107 cpu_synchronize_state(CPU(cpu
));
1108 ret
= s390_virtio_hypercall(env
);
1109 if (ret
== -EINVAL
) {
1110 enter_pgmcheck(cpu
, PGM_SPECIFICATION
);
1117 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1121 cpu_synchronize_state(CPU(cpu
));
1122 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1123 r3
= run
->s390_sieic
.ipa
& 0x000f;
1124 handle_diag_308(&cpu
->env
, r1
, r3
);
1127 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1129 CPUS390XState
*env
= &cpu
->env
;
1132 cpu_synchronize_state(CPU(cpu
));
1134 pc
= env
->psw
.addr
- 4;
1135 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1143 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1145 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1151 * For any diagnose call we support, bits 48-63 of the resulting
1152 * address specify the function code; the remainder is ignored.
1154 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
) & DIAG_KVM_CODE_MASK
;
1155 switch (func_code
) {
1157 kvm_handle_diag_308(cpu
, run
);
1159 case DIAG_KVM_HYPERCALL
:
1160 r
= handle_hypercall(cpu
, run
);
1162 case DIAG_KVM_BREAKPOINT
:
1163 r
= handle_sw_breakpoint(cpu
, run
);
1166 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1167 enter_pgmcheck(cpu
, PGM_SPECIFICATION
);
1174 typedef struct SigpInfo
{
1178 uint64_t *status_reg
;
1181 static void set_sigp_status(SigpInfo
*si
, uint64_t status
)
1183 *si
->status_reg
&= 0xffffffff00000000ULL
;
1184 *si
->status_reg
|= status
;
1185 si
->cc
= SIGP_CC_STATUS_STORED
;
1188 static void sigp_start(void *arg
)
1192 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1193 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1197 s390_cpu_set_state(CPU_STATE_OPERATING
, si
->cpu
);
1198 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1201 static void sigp_stop(void *arg
)
1204 struct kvm_s390_irq irq
= {
1205 .type
= KVM_S390_SIGP_STOP
,
1208 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_OPERATING
) {
1209 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1213 /* disabled wait - sleeping in user space */
1214 if (CPU(si
->cpu
)->halted
) {
1215 s390_cpu_set_state(CPU_STATE_STOPPED
, si
->cpu
);
1217 /* execute the stop function */
1218 si
->cpu
->env
.sigp_order
= SIGP_STOP
;
1219 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1221 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1224 #define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1225 #define SAVE_AREA_SIZE 512
1226 static int kvm_s390_store_status(S390CPU
*cpu
, hwaddr addr
, bool store_arch
)
1228 static const uint8_t ar_id
= 1;
1229 uint64_t ckc
= cpu
->env
.ckc
>> 8;
1231 hwaddr len
= SAVE_AREA_SIZE
;
1233 mem
= cpu_physical_memory_map(addr
, &len
, 1);
1237 if (len
!= SAVE_AREA_SIZE
) {
1238 cpu_physical_memory_unmap(mem
, len
, 1, 0);
1243 cpu_physical_memory_write(offsetof(LowCore
, ar_access_id
), &ar_id
, 1);
1245 memcpy(mem
, &cpu
->env
.fregs
, 128);
1246 memcpy(mem
+ 128, &cpu
->env
.regs
, 128);
1247 memcpy(mem
+ 256, &cpu
->env
.psw
, 16);
1248 memcpy(mem
+ 280, &cpu
->env
.psa
, 4);
1249 memcpy(mem
+ 284, &cpu
->env
.fpc
, 4);
1250 memcpy(mem
+ 292, &cpu
->env
.todpr
, 4);
1251 memcpy(mem
+ 296, &cpu
->env
.cputm
, 8);
1252 memcpy(mem
+ 304, &ckc
, 8);
1253 memcpy(mem
+ 320, &cpu
->env
.aregs
, 64);
1254 memcpy(mem
+ 384, &cpu
->env
.cregs
, 128);
1256 cpu_physical_memory_unmap(mem
, len
, 1, len
);
1261 static void sigp_stop_and_store_status(void *arg
)
1264 struct kvm_s390_irq irq
= {
1265 .type
= KVM_S390_SIGP_STOP
,
1268 /* disabled wait - sleeping in user space */
1269 if (s390_cpu_get_state(si
->cpu
) == CPU_STATE_OPERATING
&&
1270 CPU(si
->cpu
)->halted
) {
1271 s390_cpu_set_state(CPU_STATE_STOPPED
, si
->cpu
);
1274 switch (s390_cpu_get_state(si
->cpu
)) {
1275 case CPU_STATE_OPERATING
:
1276 si
->cpu
->env
.sigp_order
= SIGP_STOP_STORE_STATUS
;
1277 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1278 /* store will be performed when handling the stop intercept */
1280 case CPU_STATE_STOPPED
:
1281 /* already stopped, just store the status */
1282 cpu_synchronize_state(CPU(si
->cpu
));
1283 kvm_s390_store_status(si
->cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
, true);
1286 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1289 static void sigp_store_status_at_address(void *arg
)
1292 uint32_t address
= si
->param
& 0x7ffffe00u
;
1294 /* cpu has to be stopped */
1295 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1296 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1300 cpu_synchronize_state(CPU(si
->cpu
));
1302 if (kvm_s390_store_status(si
->cpu
, address
, false)) {
1303 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1306 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1309 static void sigp_restart(void *arg
)
1312 struct kvm_s390_irq irq
= {
1313 .type
= KVM_S390_RESTART
,
1316 switch (s390_cpu_get_state(si
->cpu
)) {
1317 case CPU_STATE_STOPPED
:
1318 /* the restart irq has to be delivered prior to any other pending irq */
1319 cpu_synchronize_state(CPU(si
->cpu
));
1320 do_restart_interrupt(&si
->cpu
->env
);
1321 s390_cpu_set_state(CPU_STATE_OPERATING
, si
->cpu
);
1323 case CPU_STATE_OPERATING
:
1324 kvm_s390_vcpu_interrupt(si
->cpu
, &irq
);
1327 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1330 int kvm_s390_cpu_restart(S390CPU
*cpu
)
1336 run_on_cpu(CPU(cpu
), sigp_restart
, &si
);
1337 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu
->env
);
1341 static void sigp_initial_cpu_reset(void *arg
)
1344 CPUState
*cs
= CPU(si
->cpu
);
1345 S390CPUClass
*scc
= S390_CPU_GET_CLASS(si
->cpu
);
1347 cpu_synchronize_state(cs
);
1348 scc
->initial_cpu_reset(cs
);
1349 cpu_synchronize_post_reset(cs
);
1350 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1353 static void sigp_cpu_reset(void *arg
)
1356 CPUState
*cs
= CPU(si
->cpu
);
1357 S390CPUClass
*scc
= S390_CPU_GET_CLASS(si
->cpu
);
1359 cpu_synchronize_state(cs
);
1361 cpu_synchronize_post_reset(cs
);
1362 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1365 static void sigp_set_prefix(void *arg
)
1368 uint32_t addr
= si
->param
& 0x7fffe000u
;
1370 cpu_synchronize_state(CPU(si
->cpu
));
1372 if (!address_space_access_valid(&address_space_memory
, addr
,
1373 sizeof(struct LowCore
), false)) {
1374 set_sigp_status(si
, SIGP_STAT_INVALID_PARAMETER
);
1378 /* cpu has to be stopped */
1379 if (s390_cpu_get_state(si
->cpu
) != CPU_STATE_STOPPED
) {
1380 set_sigp_status(si
, SIGP_STAT_INCORRECT_STATE
);
1384 si
->cpu
->env
.psa
= addr
;
1385 cpu_synchronize_post_init(CPU(si
->cpu
));
1386 si
->cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
1389 static int handle_sigp_single_dst(S390CPU
*dst_cpu
, uint8_t order
,
1390 uint64_t param
, uint64_t *status_reg
)
1395 .status_reg
= status_reg
,
1398 /* cpu available? */
1399 if (dst_cpu
== NULL
) {
1400 return SIGP_CC_NOT_OPERATIONAL
;
1403 /* only resets can break pending orders */
1404 if (dst_cpu
->env
.sigp_order
!= 0 &&
1405 order
!= SIGP_CPU_RESET
&&
1406 order
!= SIGP_INITIAL_CPU_RESET
) {
1407 return SIGP_CC_BUSY
;
1412 run_on_cpu(CPU(dst_cpu
), sigp_start
, &si
);
1415 run_on_cpu(CPU(dst_cpu
), sigp_stop
, &si
);
1418 run_on_cpu(CPU(dst_cpu
), sigp_restart
, &si
);
1420 case SIGP_STOP_STORE_STATUS
:
1421 run_on_cpu(CPU(dst_cpu
), sigp_stop_and_store_status
, &si
);
1423 case SIGP_STORE_STATUS_ADDR
:
1424 run_on_cpu(CPU(dst_cpu
), sigp_store_status_at_address
, &si
);
1426 case SIGP_SET_PREFIX
:
1427 run_on_cpu(CPU(dst_cpu
), sigp_set_prefix
, &si
);
1429 case SIGP_INITIAL_CPU_RESET
:
1430 run_on_cpu(CPU(dst_cpu
), sigp_initial_cpu_reset
, &si
);
1432 case SIGP_CPU_RESET
:
1433 run_on_cpu(CPU(dst_cpu
), sigp_cpu_reset
, &si
);
1436 DPRINTF("KVM: unknown SIGP: 0x%x\n", order
);
1437 set_sigp_status(&si
, SIGP_STAT_INVALID_ORDER
);
1443 static int sigp_set_architecture(S390CPU
*cpu
, uint32_t param
,
1444 uint64_t *status_reg
)
1449 /* due to the BQL, we are the only active cpu */
1450 CPU_FOREACH(cur_cs
) {
1451 cur_cpu
= S390_CPU(cur_cs
);
1452 if (cur_cpu
->env
.sigp_order
!= 0) {
1453 return SIGP_CC_BUSY
;
1455 cpu_synchronize_state(cur_cs
);
1456 /* all but the current one have to be stopped */
1457 if (cur_cpu
!= cpu
&&
1458 s390_cpu_get_state(cur_cpu
) != CPU_STATE_STOPPED
) {
1459 *status_reg
&= 0xffffffff00000000ULL
;
1460 *status_reg
|= SIGP_STAT_INCORRECT_STATE
;
1461 return SIGP_CC_STATUS_STORED
;
1465 switch (param
& 0xff) {
1466 case SIGP_MODE_ESA_S390
:
1468 return SIGP_CC_NOT_OPERATIONAL
;
1469 case SIGP_MODE_Z_ARCH_TRANS_ALL_PSW
:
1470 case SIGP_MODE_Z_ARCH_TRANS_CUR_PSW
:
1471 CPU_FOREACH(cur_cs
) {
1472 cur_cpu
= S390_CPU(cur_cs
);
1473 cur_cpu
->env
.pfault_token
= -1UL;
1477 *status_reg
&= 0xffffffff00000000ULL
;
1478 *status_reg
|= SIGP_STAT_INVALID_PARAMETER
;
1479 return SIGP_CC_STATUS_STORED
;
1482 return SIGP_CC_ORDER_CODE_ACCEPTED
;
1485 #define SIGP_ORDER_MASK 0x000000ff
1487 static int handle_sigp(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1489 CPUS390XState
*env
= &cpu
->env
;
1490 const uint8_t r1
= ipa1
>> 4;
1491 const uint8_t r3
= ipa1
& 0x0f;
1494 uint64_t *status_reg
;
1496 S390CPU
*dst_cpu
= NULL
;
1498 cpu_synchronize_state(CPU(cpu
));
1500 /* get order code */
1501 order
= decode_basedisp_rs(env
, run
->s390_sieic
.ipb
) & SIGP_ORDER_MASK
;
1502 status_reg
= &env
->regs
[r1
];
1503 param
= (r1
% 2) ? env
->regs
[r1
] : env
->regs
[r1
+ 1];
1507 ret
= sigp_set_architecture(cpu
, param
, status_reg
);
1510 /* all other sigp orders target a single vcpu */
1511 dst_cpu
= s390_cpu_addr2state(env
->regs
[r3
]);
1512 ret
= handle_sigp_single_dst(dst_cpu
, order
, param
, status_reg
);
1515 trace_kvm_sigp_finished(order
, CPU(cpu
)->cpu_index
,
1516 dst_cpu
? CPU(dst_cpu
)->cpu_index
: -1, ret
);
1526 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1528 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1529 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1532 DPRINTF("handle_instruction 0x%x 0x%x\n",
1533 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1536 r
= handle_b2(cpu
, run
, ipa1
);
1539 r
= handle_b9(cpu
, run
, ipa1
);
1542 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1545 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1548 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1551 r
= handle_sigp(cpu
, run
, ipa1
);
1557 enter_pgmcheck(cpu
, 0x0001);
1563 static bool is_special_wait_psw(CPUState
*cs
)
1565 /* signal quiesce */
1566 return cs
->kvm_run
->psw_addr
== 0xfffUL
;
1569 static void guest_panicked(void)
1571 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE
,
1573 vm_stop(RUN_STATE_GUEST_PANICKED
);
1576 static void unmanageable_intercept(S390CPU
*cpu
, const char *str
, int pswoffset
)
1578 CPUState
*cs
= CPU(cpu
);
1580 error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1581 str
, cs
->cpu_index
, ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
),
1582 ldq_phys(cs
->as
, cpu
->env
.psa
+ pswoffset
+ 8));
1587 static int handle_intercept(S390CPU
*cpu
)
1589 CPUState
*cs
= CPU(cpu
);
1590 struct kvm_run
*run
= cs
->kvm_run
;
1591 int icpt_code
= run
->s390_sieic
.icptcode
;
1594 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1595 (long)cs
->kvm_run
->psw_addr
);
1596 switch (icpt_code
) {
1597 case ICPT_INSTRUCTION
:
1598 r
= handle_instruction(cpu
, run
);
1601 unmanageable_intercept(cpu
, "program interrupt",
1602 offsetof(LowCore
, program_new_psw
));
1606 unmanageable_intercept(cpu
, "external interrupt",
1607 offsetof(LowCore
, external_new_psw
));
1611 /* disabled wait, since enabled wait is handled in kernel */
1612 cpu_synchronize_state(cs
);
1613 if (s390_cpu_halt(cpu
) == 0) {
1614 if (is_special_wait_psw(cs
)) {
1615 qemu_system_shutdown_request();
1623 if (s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
) == 0) {
1624 qemu_system_shutdown_request();
1626 if (cpu
->env
.sigp_order
== SIGP_STOP_STORE_STATUS
) {
1627 kvm_s390_store_status(cpu
, KVM_S390_STORE_STATUS_DEF_ADDR
,
1630 cpu
->env
.sigp_order
= 0;
1633 case ICPT_SOFT_INTERCEPT
:
1634 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1638 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1642 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1650 static int handle_tsch(S390CPU
*cpu
)
1652 CPUState
*cs
= CPU(cpu
);
1653 struct kvm_run
*run
= cs
->kvm_run
;
1656 cpu_synchronize_state(cs
);
1658 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
);
1662 * If an I/O interrupt had been dequeued, we have to reinject it.
1664 if (run
->s390_tsch
.dequeued
) {
1665 kvm_s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1666 run
->s390_tsch
.subchannel_nr
,
1667 run
->s390_tsch
.io_int_parm
,
1668 run
->s390_tsch
.io_int_word
);
1675 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1677 CPUState
*cs
= CPU(cpu
);
1678 struct kvm_run
*run
= cs
->kvm_run
;
1681 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1683 switch (arch_info
->type
) {
1684 case KVM_HW_WP_WRITE
:
1685 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1686 cs
->watchpoint_hit
= &hw_watchpoint
;
1687 hw_watchpoint
.vaddr
= arch_info
->addr
;
1688 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1693 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1697 case KVM_SINGLESTEP
:
1698 if (cs
->singlestep_enabled
) {
1709 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1711 S390CPU
*cpu
= S390_CPU(cs
);
1714 switch (run
->exit_reason
) {
1715 case KVM_EXIT_S390_SIEIC
:
1716 ret
= handle_intercept(cpu
);
1718 case KVM_EXIT_S390_RESET
:
1719 s390_reipl_request();
1721 case KVM_EXIT_S390_TSCH
:
1722 ret
= handle_tsch(cpu
);
1724 case KVM_EXIT_DEBUG
:
1725 ret
= kvm_arch_handle_debug_exit(cpu
);
1728 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
1733 ret
= EXCP_INTERRUPT
;
1738 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
1743 int kvm_arch_on_sigbus_vcpu(CPUState
*cpu
, int code
, void *addr
)
1748 int kvm_arch_on_sigbus(int code
, void *addr
)
1753 void kvm_s390_io_interrupt(uint16_t subchannel_id
,
1754 uint16_t subchannel_nr
, uint32_t io_int_parm
,
1755 uint32_t io_int_word
)
1757 struct kvm_s390_irq irq
= {
1758 .u
.io
.subchannel_id
= subchannel_id
,
1759 .u
.io
.subchannel_nr
= subchannel_nr
,
1760 .u
.io
.io_int_parm
= io_int_parm
,
1761 .u
.io
.io_int_word
= io_int_word
,
1764 if (io_int_word
& IO_INT_WORD_AI
) {
1765 irq
.type
= KVM_S390_INT_IO(1, 0, 0, 0);
1767 irq
.type
= ((subchannel_id
& 0xff00) << 24) |
1768 ((subchannel_id
& 0x00060) << 22) | (subchannel_nr
<< 16);
1770 kvm_s390_floating_interrupt(&irq
);
1773 void kvm_s390_crw_mchk(void)
1775 struct kvm_s390_irq irq
= {
1776 .type
= KVM_S390_MCHK
,
1777 .u
.mchk
.cr14
= 1 << 28,
1778 .u
.mchk
.mcic
= 0x00400f1d40330000ULL
,
1780 kvm_s390_floating_interrupt(&irq
);
1783 void kvm_s390_enable_css_support(S390CPU
*cpu
)
1787 /* Activate host kernel channel subsystem support. */
1788 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
1792 void kvm_arch_init_irq_routing(KVMState
*s
)
1795 * Note that while irqchip capabilities generally imply that cpustates
1796 * are handled in-kernel, it is not true for s390 (yet); therefore, we
1797 * have to override the common code kvm_halt_in_kernel_allowed setting.
1799 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
1800 kvm_gsi_routing_allowed
= true;
1801 kvm_halt_in_kernel_allowed
= false;
1805 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
1806 int vq
, bool assign
)
1808 struct kvm_ioeventfd kick
= {
1809 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
1810 KVM_IOEVENTFD_FLAG_DATAMATCH
,
1811 .fd
= event_notifier_get_fd(notifier
),
1816 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
1820 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
1822 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
1825 int kvm_s390_get_memslot_count(KVMState
*s
)
1827 return kvm_check_extension(s
, KVM_CAP_NR_MEMSLOTS
);
1830 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
1832 struct kvm_mp_state mp_state
= {};
1835 /* the kvm part might not have been initialized yet */
1836 if (CPU(cpu
)->kvm_state
== NULL
) {
1840 switch (cpu_state
) {
1841 case CPU_STATE_STOPPED
:
1842 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
1844 case CPU_STATE_CHECK_STOP
:
1845 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
1847 case CPU_STATE_OPERATING
:
1848 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
1850 case CPU_STATE_LOAD
:
1851 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
1854 error_report("Requested CPU state is not a valid S390 CPU state: %u",
1859 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
1861 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
1868 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
1869 uint64_t address
, uint32_t data
)
1871 S390PCIBusDevice
*pbdev
;
1872 uint32_t fid
= data
>> ZPCI_MSI_VEC_BITS
;
1873 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
1875 pbdev
= s390_pci_find_dev_by_fid(fid
);
1877 DPRINTF("add_msi_route no dev\n");
1881 pbdev
->routes
.adapter
.ind_offset
= vec
;
1883 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
1885 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
1886 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
1887 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
1888 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
;
1889 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;