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"
36 #include "sysemu/device_tree.h"
37 #include "qapi/qmp/qjson.h"
38 #include "monitor/monitor.h"
40 /* #define DEBUG_KVM */
43 #define DPRINTF(fmt, ...) \
44 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
46 #define DPRINTF(fmt, ...) \
50 #define IPA0_DIAG 0x8300
51 #define IPA0_SIGP 0xae00
52 #define IPA0_B2 0xb200
53 #define IPA0_B9 0xb900
54 #define IPA0_EB 0xeb00
56 #define PRIV_SCLP_CALL 0x20
57 #define PRIV_CSCH 0x30
58 #define PRIV_HSCH 0x31
59 #define PRIV_MSCH 0x32
60 #define PRIV_SSCH 0x33
61 #define PRIV_STSCH 0x34
62 #define PRIV_TSCH 0x35
65 #define PRIV_RSCH 0x38
66 #define PRIV_STCRW 0x39
67 #define PRIV_STCPS 0x3a
68 #define PRIV_RCHP 0x3b
69 #define PRIV_SCHM 0x3c
70 #define PRIV_CHSC 0x5f
71 #define PRIV_SIGA 0x74
72 #define PRIV_XSCH 0x76
73 #define PRIV_SQBS 0x8a
74 #define PRIV_EQBS 0x9c
75 #define DIAG_IPL 0x308
76 #define DIAG_KVM_HYPERCALL 0x500
77 #define DIAG_KVM_BREAKPOINT 0x501
79 #define ICPT_INSTRUCTION 0x04
80 #define ICPT_WAITPSW 0x1c
81 #define ICPT_SOFT_INTERCEPT 0x24
82 #define ICPT_CPU_STOP 0x28
85 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
89 static int cap_sync_regs
;
90 static int cap_async_pf
;
92 static void *legacy_s390_alloc(size_t size
);
94 int kvm_arch_init(KVMState
*s
)
96 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
97 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
98 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
99 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
100 phys_mem_set_alloc(legacy_s390_alloc
);
105 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
107 return cpu
->cpu_index
;
110 int kvm_arch_init_vcpu(CPUState
*cpu
)
112 /* nothing todo yet */
116 void kvm_arch_reset_vcpu(CPUState
*cpu
)
118 /* The initial reset call is needed here to reset in-kernel
119 * vcpu data that we can't access directly from QEMU
120 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
121 * Before this ioctl cpu_synchronize_state() is called in common kvm
123 if (kvm_vcpu_ioctl(cpu
, KVM_S390_INITIAL_RESET
, NULL
)) {
124 perror("Can't reset vcpu\n");
128 int kvm_arch_put_registers(CPUState
*cs
, int level
)
130 S390CPU
*cpu
= S390_CPU(cs
);
131 CPUS390XState
*env
= &cpu
->env
;
132 struct kvm_one_reg reg
;
133 struct kvm_sregs sregs
;
134 struct kvm_regs regs
;
138 /* always save the PSW and the GPRS*/
139 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
140 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
142 if (cap_sync_regs
&& cs
->kvm_run
->kvm_valid_regs
& KVM_SYNC_GPRS
) {
143 for (i
= 0; i
< 16; i
++) {
144 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
145 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
148 for (i
= 0; i
< 16; i
++) {
149 regs
.gprs
[i
] = env
->regs
[i
];
151 ret
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
157 /* Do we need to save more than that? */
158 if (level
== KVM_PUT_RUNTIME_STATE
) {
162 reg
.id
= KVM_REG_S390_CPU_TIMER
;
163 reg
.addr
= (__u64
)&(env
->cputm
);
164 ret
= kvm_vcpu_ioctl(cs
, KVM_SET_ONE_REG
, ®
);
169 reg
.id
= KVM_REG_S390_CLOCK_COMP
;
170 reg
.addr
= (__u64
)&(env
->ckc
);
171 ret
= kvm_vcpu_ioctl(cs
, KVM_SET_ONE_REG
, ®
);
176 reg
.id
= KVM_REG_S390_TODPR
;
177 reg
.addr
= (__u64
)&(env
->todpr
);
178 ret
= kvm_vcpu_ioctl(cs
, KVM_SET_ONE_REG
, ®
);
184 reg
.id
= KVM_REG_S390_PFTOKEN
;
185 reg
.addr
= (__u64
)&(env
->pfault_token
);
186 ret
= kvm_vcpu_ioctl(cs
, KVM_SET_ONE_REG
, ®
);
191 reg
.id
= KVM_REG_S390_PFCOMPARE
;
192 reg
.addr
= (__u64
)&(env
->pfault_compare
);
193 ret
= kvm_vcpu_ioctl(cs
, KVM_SET_ONE_REG
, ®
);
198 reg
.id
= KVM_REG_S390_PFSELECT
;
199 reg
.addr
= (__u64
)&(env
->pfault_select
);
200 ret
= kvm_vcpu_ioctl(cs
, KVM_SET_ONE_REG
, ®
);
207 cs
->kvm_run
->kvm_valid_regs
& KVM_SYNC_ACRS
&&
208 cs
->kvm_run
->kvm_valid_regs
& KVM_SYNC_CRS
) {
209 for (i
= 0; i
< 16; i
++) {
210 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
211 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
213 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
214 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
216 for (i
= 0; i
< 16; i
++) {
217 sregs
.acrs
[i
] = env
->aregs
[i
];
218 sregs
.crs
[i
] = env
->cregs
[i
];
220 ret
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
226 /* Finally the prefix */
227 if (cap_sync_regs
&& cs
->kvm_run
->kvm_valid_regs
& KVM_SYNC_PREFIX
) {
228 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
229 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
231 /* prefix is only supported via sync regs */
236 int kvm_arch_get_registers(CPUState
*cs
)
238 S390CPU
*cpu
= S390_CPU(cs
);
239 CPUS390XState
*env
= &cpu
->env
;
240 struct kvm_one_reg reg
;
241 struct kvm_sregs sregs
;
242 struct kvm_regs regs
;
246 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
247 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
250 if (cap_sync_regs
&& cs
->kvm_run
->kvm_valid_regs
& KVM_SYNC_GPRS
) {
251 for (i
= 0; i
< 16; i
++) {
252 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
255 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
259 for (i
= 0; i
< 16; i
++) {
260 env
->regs
[i
] = regs
.gprs
[i
];
264 /* The ACRS and CRS */
266 cs
->kvm_run
->kvm_valid_regs
& KVM_SYNC_ACRS
&&
267 cs
->kvm_run
->kvm_valid_regs
& KVM_SYNC_CRS
) {
268 for (i
= 0; i
< 16; i
++) {
269 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
270 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
273 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
277 for (i
= 0; i
< 16; i
++) {
278 env
->aregs
[i
] = sregs
.acrs
[i
];
279 env
->cregs
[i
] = sregs
.crs
[i
];
284 if (cap_sync_regs
&& cs
->kvm_run
->kvm_valid_regs
& KVM_SYNC_PREFIX
) {
285 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
289 reg
.id
= KVM_REG_S390_CPU_TIMER
;
290 reg
.addr
= (__u64
)&(env
->cputm
);
291 r
= kvm_vcpu_ioctl(cs
, KVM_GET_ONE_REG
, ®
);
296 reg
.id
= KVM_REG_S390_CLOCK_COMP
;
297 reg
.addr
= (__u64
)&(env
->ckc
);
298 r
= kvm_vcpu_ioctl(cs
, KVM_GET_ONE_REG
, ®
);
303 reg
.id
= KVM_REG_S390_TODPR
;
304 reg
.addr
= (__u64
)&(env
->todpr
);
305 r
= kvm_vcpu_ioctl(cs
, KVM_GET_ONE_REG
, ®
);
311 reg
.id
= KVM_REG_S390_PFTOKEN
;
312 reg
.addr
= (__u64
)&(env
->pfault_token
);
313 r
= kvm_vcpu_ioctl(cs
, KVM_GET_ONE_REG
, ®
);
318 reg
.id
= KVM_REG_S390_PFCOMPARE
;
319 reg
.addr
= (__u64
)&(env
->pfault_compare
);
320 r
= kvm_vcpu_ioctl(cs
, KVM_GET_ONE_REG
, ®
);
325 reg
.id
= KVM_REG_S390_PFSELECT
;
326 reg
.addr
= (__u64
)&(env
->pfault_select
);
327 r
= kvm_vcpu_ioctl(cs
, KVM_GET_ONE_REG
, ®
);
337 * Legacy layout for s390:
338 * Older S390 KVM requires the topmost vma of the RAM to be
339 * smaller than an system defined value, which is at least 256GB.
340 * Larger systems have larger values. We put the guest between
341 * the end of data segment (system break) and this value. We
342 * use 32GB as a base to have enough room for the system break
343 * to grow. We also have to use MAP parameters that avoid
344 * read-only mapping of guest pages.
346 static void *legacy_s390_alloc(size_t size
)
350 mem
= mmap((void *) 0x800000000ULL
, size
,
351 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
352 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
353 return mem
== MAP_FAILED
? NULL
: mem
;
356 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
358 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
360 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
, 4, 0) ||
361 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)diag_501
, 4, 1)) {
367 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
370 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
372 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, 4, 0)) {
374 } else if (memcmp(t
, diag_501
, 4)) {
376 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
, 1, 1)) {
383 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
387 void kvm_arch_post_run(CPUState
*cpu
, struct kvm_run
*run
)
391 int kvm_arch_process_async_events(CPUState
*cs
)
396 void kvm_s390_interrupt_internal(S390CPU
*cpu
, int type
, uint32_t parm
,
397 uint64_t parm64
, int vm
)
399 CPUState
*cs
= CPU(cpu
);
400 struct kvm_s390_interrupt kvmint
;
403 if (!cs
->kvm_state
) {
409 kvmint
.parm64
= parm64
;
412 r
= kvm_vm_ioctl(cs
->kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
414 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
418 fprintf(stderr
, "KVM failed to inject interrupt\n");
423 void kvm_s390_virtio_irq(S390CPU
*cpu
, int config_change
, uint64_t token
)
425 kvm_s390_interrupt_internal(cpu
, KVM_S390_INT_VIRTIO
, config_change
,
429 void kvm_s390_interrupt(S390CPU
*cpu
, int type
, uint32_t code
)
431 kvm_s390_interrupt_internal(cpu
, type
, code
, 0, 0);
434 static void enter_pgmcheck(S390CPU
*cpu
, uint16_t code
)
436 kvm_s390_interrupt(cpu
, KVM_S390_PROGRAM_INT
, code
);
439 static int kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
442 CPUS390XState
*env
= &cpu
->env
;
447 cpu_synchronize_state(CPU(cpu
));
448 if (env
->psw
.mask
& PSW_MASK_PSTATE
) {
449 enter_pgmcheck(cpu
, PGM_PRIVILEGED
);
452 sccb
= env
->regs
[ipbh0
& 0xf];
453 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
455 r
= sclp_service_call(sccb
, code
);
457 enter_pgmcheck(cpu
, -r
);
464 static int kvm_handle_css_inst(S390CPU
*cpu
, struct kvm_run
*run
,
465 uint8_t ipa0
, uint8_t ipa1
, uint8_t ipb
)
467 CPUS390XState
*env
= &cpu
->env
;
470 /* Not handled for now. */
474 cpu_synchronize_state(CPU(cpu
));
478 ioinst_handle_xsch(cpu
, env
->regs
[1]);
481 ioinst_handle_csch(cpu
, env
->regs
[1]);
484 ioinst_handle_hsch(cpu
, env
->regs
[1]);
487 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
490 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
493 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
);
496 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
);
499 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
500 fprintf(stderr
, "Spurious tsch intercept\n");
503 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
);
506 /* This should have been handled by kvm already. */
507 fprintf(stderr
, "Spurious tpi intercept\n");
510 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
511 run
->s390_sieic
.ipb
);
514 ioinst_handle_rsch(cpu
, env
->regs
[1]);
517 ioinst_handle_rchp(cpu
, env
->regs
[1]);
520 /* We do not provide this instruction, it is suppressed. */
523 ioinst_handle_sal(cpu
, env
->regs
[1]);
526 /* Not provided, set CC = 3 for subchannel not operational */
536 static int handle_priv(S390CPU
*cpu
, struct kvm_run
*run
,
537 uint8_t ipa0
, uint8_t ipa1
)
540 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
541 uint8_t ipb
= run
->s390_sieic
.ipb
& 0xff;
543 DPRINTF("KVM: PRIV: %d\n", ipa1
);
546 r
= kvm_sclp_service_call(cpu
, run
, ipbh0
);
549 r
= kvm_handle_css_inst(cpu
, run
, ipa0
, ipa1
, ipb
);
551 DPRINTF("KVM: unhandled PRIV: 0x%x\n", ipa1
);
559 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
561 CPUS390XState
*env
= &cpu
->env
;
564 cpu_synchronize_state(CPU(cpu
));
565 ret
= s390_virtio_hypercall(env
);
566 if (ret
== -EINVAL
) {
567 enter_pgmcheck(cpu
, PGM_SPECIFICATION
);
574 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
578 cpu_synchronize_state(CPU(cpu
));
579 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 8;
580 r3
= run
->s390_sieic
.ipa
& 0x000f;
581 handle_diag_308(&cpu
->env
, r1
, r3
);
584 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
586 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
592 * For any diagnose call we support, bits 48-63 of the resulting
593 * address specify the function code; the remainder is ignored.
595 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
) & DIAG_KVM_CODE_MASK
;
598 kvm_handle_diag_308(cpu
, run
);
600 case DIAG_KVM_HYPERCALL
:
601 r
= handle_hypercall(cpu
, run
);
603 case DIAG_KVM_BREAKPOINT
:
607 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
615 static int kvm_s390_cpu_start(S390CPU
*cpu
)
617 s390_add_running_cpu(cpu
);
618 qemu_cpu_kick(CPU(cpu
));
619 DPRINTF("DONE: KVM cpu start: %p\n", &cpu
->env
);
623 int kvm_s390_cpu_restart(S390CPU
*cpu
)
625 kvm_s390_interrupt(cpu
, KVM_S390_RESTART
, 0);
626 s390_add_running_cpu(cpu
);
627 qemu_cpu_kick(CPU(cpu
));
628 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu
->env
);
632 static int s390_cpu_initial_reset(S390CPU
*cpu
)
634 CPUState
*cs
= CPU(cpu
);
635 CPUS390XState
*env
= &cpu
->env
;
638 s390_del_running_cpu(cpu
);
639 if (kvm_vcpu_ioctl(cs
, KVM_S390_INITIAL_RESET
, NULL
) < 0) {
640 perror("cannot init reset vcpu");
643 /* Manually zero out all registers */
644 cpu_synchronize_state(cs
);
645 for (i
= 0; i
< 16; i
++) {
649 DPRINTF("DONE: SIGP initial reset: %p\n", env
);
653 #define SIGP_ORDER_MASK 0x000000ff
655 static int handle_sigp(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
657 CPUS390XState
*env
= &cpu
->env
;
661 uint64_t *statusreg
= &env
->regs
[ipa1
>> 4];
664 cpu_synchronize_state(CPU(cpu
));
667 order_code
= decode_basedisp_rs(env
, run
->s390_sieic
.ipb
) & SIGP_ORDER_MASK
;
669 cpu_addr
= env
->regs
[ipa1
& 0x0f];
670 target_cpu
= s390_cpu_addr2state(cpu_addr
);
671 if (target_cpu
== NULL
) {
672 cc
= 3; /* not operational */
676 switch (order_code
) {
678 cc
= kvm_s390_cpu_start(target_cpu
);
681 cc
= kvm_s390_cpu_restart(target_cpu
);
684 *statusreg
&= 0xffffffff00000000UL
;
685 *statusreg
|= SIGP_STAT_INVALID_PARAMETER
;
686 cc
= 1; /* status stored */
688 case SIGP_INITIAL_CPU_RESET
:
689 cc
= s390_cpu_initial_reset(target_cpu
);
692 DPRINTF("KVM: unknown SIGP: 0x%x\n", order_code
);
693 *statusreg
&= 0xffffffff00000000UL
;
694 *statusreg
|= SIGP_STAT_INVALID_ORDER
;
695 cc
= 1; /* status stored */
704 static void handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
706 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
707 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
710 DPRINTF("handle_instruction 0x%x 0x%x\n",
711 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
716 r
= handle_priv(cpu
, run
, ipa0
>> 8, ipa1
);
719 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
722 r
= handle_sigp(cpu
, run
, ipa1
);
727 enter_pgmcheck(cpu
, 0x0001);
731 static bool is_special_wait_psw(CPUState
*cs
)
734 return cs
->kvm_run
->psw_addr
== 0xfffUL
;
737 static int handle_intercept(S390CPU
*cpu
)
739 CPUState
*cs
= CPU(cpu
);
740 struct kvm_run
*run
= cs
->kvm_run
;
741 int icpt_code
= run
->s390_sieic
.icptcode
;
744 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
745 (long)cs
->kvm_run
->psw_addr
);
747 case ICPT_INSTRUCTION
:
748 handle_instruction(cpu
, run
);
751 /* disabled wait, since enabled wait is handled in kernel */
752 if (s390_del_running_cpu(cpu
) == 0) {
753 if (is_special_wait_psw(cs
)) {
754 qemu_system_shutdown_request();
758 data
= qobject_from_jsonf("{ 'action': %s }", "pause");
759 monitor_protocol_event(QEVENT_GUEST_PANICKED
, data
);
760 qobject_decref(data
);
761 vm_stop(RUN_STATE_GUEST_PANICKED
);
767 if (s390_del_running_cpu(cpu
) == 0) {
768 qemu_system_shutdown_request();
772 case ICPT_SOFT_INTERCEPT
:
773 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
777 fprintf(stderr
, "KVM unimplemented icpt IO\n");
781 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
789 static int handle_tsch(S390CPU
*cpu
)
791 CPUS390XState
*env
= &cpu
->env
;
792 CPUState
*cs
= CPU(cpu
);
793 struct kvm_run
*run
= cs
->kvm_run
;
796 cpu_synchronize_state(cs
);
798 ret
= ioinst_handle_tsch(env
, env
->regs
[1], run
->s390_tsch
.ipb
);
800 /* Success; set condition code. */
803 } else if (ret
< -1) {
806 * If an I/O interrupt had been dequeued, we have to reinject it.
808 if (run
->s390_tsch
.dequeued
) {
809 uint16_t subchannel_id
= run
->s390_tsch
.subchannel_id
;
810 uint16_t subchannel_nr
= run
->s390_tsch
.subchannel_nr
;
811 uint32_t io_int_parm
= run
->s390_tsch
.io_int_parm
;
812 uint32_t io_int_word
= run
->s390_tsch
.io_int_word
;
813 uint32_t type
= ((subchannel_id
& 0xff00) << 24) |
814 ((subchannel_id
& 0x00060) << 22) | (subchannel_nr
<< 16);
816 kvm_s390_interrupt_internal(cpu
, type
,
817 ((uint32_t)subchannel_id
<< 16)
819 ((uint64_t)io_int_parm
<< 32)
827 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
829 S390CPU
*cpu
= S390_CPU(cs
);
832 switch (run
->exit_reason
) {
833 case KVM_EXIT_S390_SIEIC
:
834 ret
= handle_intercept(cpu
);
836 case KVM_EXIT_S390_RESET
:
837 qemu_system_reset_request();
839 case KVM_EXIT_S390_TSCH
:
840 ret
= handle_tsch(cpu
);
843 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
848 ret
= EXCP_INTERRUPT
;
853 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
858 int kvm_arch_on_sigbus_vcpu(CPUState
*cpu
, int code
, void *addr
)
863 int kvm_arch_on_sigbus(int code
, void *addr
)
868 void kvm_s390_io_interrupt(S390CPU
*cpu
, uint16_t subchannel_id
,
869 uint16_t subchannel_nr
, uint32_t io_int_parm
,
870 uint32_t io_int_word
)
874 type
= ((subchannel_id
& 0xff00) << 24) |
875 ((subchannel_id
& 0x00060) << 22) | (subchannel_nr
<< 16);
876 kvm_s390_interrupt_internal(cpu
, type
,
877 ((uint32_t)subchannel_id
<< 16) | subchannel_nr
,
878 ((uint64_t)io_int_parm
<< 32) | io_int_word
, 1);
881 void kvm_s390_crw_mchk(S390CPU
*cpu
)
883 kvm_s390_interrupt_internal(cpu
, KVM_S390_MCHK
, 1 << 28,
884 0x00400f1d40330000, 1);
887 void kvm_s390_enable_css_support(S390CPU
*cpu
)
889 struct kvm_enable_cap cap
= {};
892 /* Activate host kernel channel subsystem support. */
893 cap
.cap
= KVM_CAP_S390_CSS_SUPPORT
;
894 r
= kvm_vcpu_ioctl(CPU(cpu
), KVM_ENABLE_CAP
, &cap
);
898 void kvm_arch_init_irq_routing(KVMState
*s
)
902 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
905 struct kvm_ioeventfd kick
= {
906 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
907 KVM_IOEVENTFD_FLAG_DATAMATCH
,
908 .fd
= event_notifier_get_fd(notifier
),
913 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
917 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
919 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);