2 * QEMU S390x KVM implementation
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"
41 /* #define DEBUG_KVM */
44 #define DPRINTF(fmt, ...) \
45 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
47 #define DPRINTF(fmt, ...) \
51 #define IPA0_DIAG 0x8300
52 #define IPA0_SIGP 0xae00
53 #define IPA0_B2 0xb200
54 #define IPA0_B9 0xb900
55 #define IPA0_EB 0xeb00
57 #define PRIV_B2_SCLP_CALL 0x20
58 #define PRIV_B2_CSCH 0x30
59 #define PRIV_B2_HSCH 0x31
60 #define PRIV_B2_MSCH 0x32
61 #define PRIV_B2_SSCH 0x33
62 #define PRIV_B2_STSCH 0x34
63 #define PRIV_B2_TSCH 0x35
64 #define PRIV_B2_TPI 0x36
65 #define PRIV_B2_SAL 0x37
66 #define PRIV_B2_RSCH 0x38
67 #define PRIV_B2_STCRW 0x39
68 #define PRIV_B2_STCPS 0x3a
69 #define PRIV_B2_RCHP 0x3b
70 #define PRIV_B2_SCHM 0x3c
71 #define PRIV_B2_CHSC 0x5f
72 #define PRIV_B2_SIGA 0x74
73 #define PRIV_B2_XSCH 0x76
75 #define PRIV_EB_SQBS 0x8a
77 #define PRIV_B9_EQBS 0x9c
79 #define DIAG_IPL 0x308
80 #define DIAG_KVM_HYPERCALL 0x500
81 #define DIAG_KVM_BREAKPOINT 0x501
83 #define ICPT_INSTRUCTION 0x04
84 #define ICPT_WAITPSW 0x1c
85 #define ICPT_SOFT_INTERCEPT 0x24
86 #define ICPT_CPU_STOP 0x28
89 const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
93 static int cap_sync_regs;
94 static int cap_async_pf;
96 static void *legacy_s390_alloc(size_t size);
98 int kvm_arch_init(KVMState *s)
100 cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
101 cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
102 if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
103 || !kvm_check_extension(s, KVM_CAP_S390_COW)) {
104 phys_mem_set_alloc(legacy_s390_alloc);
109 unsigned long kvm_arch_vcpu_id(CPUState *cpu)
111 return cpu->cpu_index;
114 int kvm_arch_init_vcpu(CPUState *cpu)
116 /* nothing todo yet */
120 void kvm_s390_reset_vcpu(S390CPU *cpu)
122 CPUState *cs = CPU(cpu);
124 /* The initial reset call is needed here to reset in-kernel
125 * vcpu data that we can't access directly from QEMU
126 * (i.e. with older kernels which don't support sync_regs/ONE_REG).
127 * Before this ioctl cpu_synchronize_state() is called in common kvm
129 if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
130 perror("Can't reset vcpu\n");
134 int kvm_arch_put_registers(CPUState *cs, int level)
136 S390CPU *cpu = S390_CPU(cs);
137 CPUS390XState *env = &cpu->env;
138 struct kvm_sregs sregs;
139 struct kvm_regs regs;
143 /* always save the PSW and the GPRS*/
144 cs->kvm_run->psw_addr = env->psw.addr;
145 cs->kvm_run->psw_mask = env->psw.mask;
147 if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) {
148 for (i = 0; i < 16; i++) {
149 cs->kvm_run->s.regs.gprs[i] = env->regs[i];
150 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
153 for (i = 0; i < 16; i++) {
154 regs.gprs[i] = env->regs[i];
156 r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
162 /* Do we need to save more than that? */
163 if (level == KVM_PUT_RUNTIME_STATE) {
168 * These ONE_REGS are not protected by a capability. As they are only
169 * necessary for migration we just trace a possible error, but don't
170 * return with an error return code.
172 kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
173 kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
174 kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
175 kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
176 kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
179 r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
183 r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
187 r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
194 cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
195 cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
196 for (i = 0; i < 16; i++) {
197 cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
198 cs->kvm_run->s.regs.crs[i] = env->cregs[i];
200 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
201 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
203 for (i = 0; i < 16; i++) {
204 sregs.acrs[i] = env->aregs[i];
205 sregs.crs[i] = env->cregs[i];
207 r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
213 /* Finally the prefix */
214 if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
215 cs->kvm_run->s.regs.prefix = env->psa;
216 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
218 /* prefix is only supported via sync regs */
223 int kvm_arch_get_registers(CPUState *cs)
225 S390CPU *cpu = S390_CPU(cs);
226 CPUS390XState *env = &cpu->env;
227 struct kvm_sregs sregs;
228 struct kvm_regs regs;
232 env->psw.addr = cs->kvm_run->psw_addr;
233 env->psw.mask = cs->kvm_run->psw_mask;
236 if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) {
237 for (i = 0; i < 16; i++) {
238 env->regs[i] = cs->kvm_run->s.regs.gprs[i];
241 r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
245 for (i = 0; i < 16; i++) {
246 env->regs[i] = regs.gprs[i];
250 /* The ACRS and CRS */
252 cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
253 cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
254 for (i = 0; i < 16; i++) {
255 env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
256 env->cregs[i] = cs->kvm_run->s.regs.crs[i];
259 r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
263 for (i = 0; i < 16; i++) {
264 env->aregs[i] = sregs.acrs[i];
265 env->cregs[i] = sregs.crs[i];
270 if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
271 env->psa = cs->kvm_run->s.regs.prefix;
275 * These ONE_REGS are not protected by a capability. As they are only
276 * necessary for migration we just trace a possible error, but don't
277 * return with an error return code.
279 kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
280 kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
281 kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
282 kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
283 kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
286 r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
290 r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
294 r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
304 * Legacy layout for s390:
305 * Older S390 KVM requires the topmost vma of the RAM to be
306 * smaller than an system defined value, which is at least 256GB.
307 * Larger systems have larger values. We put the guest between
308 * the end of data segment (system break) and this value. We
309 * use 32GB as a base to have enough room for the system break
310 * to grow. We also have to use MAP parameters that avoid
311 * read-only mapping of guest pages.
313 static void *legacy_s390_alloc(size_t size)
317 mem = mmap((void *) 0x800000000ULL, size,
318 PROT_EXEC|PROT_READ|PROT_WRITE,
319 MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
320 return mem == MAP_FAILED ? NULL : mem;
323 int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
325 static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
327 if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn, 4, 0) ||
328 cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)diag_501, 4, 1)) {
334 int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
337 static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
339 if (cpu_memory_rw_debug(cs, bp->pc, t, 4, 0)) {
341 } else if (memcmp(t, diag_501, 4)) {
343 } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1)) {
350 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
351 target_ulong len, int type)
356 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
357 target_ulong len, int type)
362 void kvm_arch_remove_all_hw_breakpoints(void)
366 void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
370 void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
374 void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run)
378 int kvm_arch_process_async_events(CPUState *cs)
383 void kvm_s390_interrupt_internal(S390CPU *cpu, int type, uint32_t parm,
384 uint64_t parm64, int vm)
386 CPUState *cs = CPU(cpu);
387 struct kvm_s390_interrupt kvmint;
390 if (!cs->kvm_state) {
396 kvmint.parm64 = parm64;
399 r = kvm_vm_ioctl(cs->kvm_state, KVM_S390_INTERRUPT, &kvmint);
401 r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
405 fprintf(stderr, "KVM failed to inject interrupt\n");
410 void kvm_s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token)
412 kvm_s390_interrupt_internal(cpu, KVM_S390_INT_VIRTIO, config_change,
416 void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code)
418 kvm_s390_interrupt_internal(cpu, type, code, 0, 0);
421 static void enter_pgmcheck(S390CPU *cpu, uint16_t code)
423 kvm_s390_interrupt(cpu, KVM_S390_PROGRAM_INT, code);
426 static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
429 CPUS390XState *env = &cpu->env;
434 cpu_synchronize_state(CPU(cpu));
435 sccb = env->regs[ipbh0 & 0xf];
436 code = env->regs[(ipbh0 & 0xf0) >> 4];
438 r = sclp_service_call(env, sccb, code);
440 enter_pgmcheck(cpu, -r);
448 static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
450 CPUS390XState *env = &cpu->env;
452 uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
454 cpu_synchronize_state(CPU(cpu));
458 ioinst_handle_xsch(cpu, env->regs[1]);
461 ioinst_handle_csch(cpu, env->regs[1]);
464 ioinst_handle_hsch(cpu, env->regs[1]);
467 ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb);
470 ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb);
473 ioinst_handle_stcrw(cpu, run->s390_sieic.ipb);
476 ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb);
479 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
480 fprintf(stderr, "Spurious tsch intercept\n");
483 ioinst_handle_chsc(cpu, run->s390_sieic.ipb);
486 /* This should have been handled by kvm already. */
487 fprintf(stderr, "Spurious tpi intercept\n");
490 ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
491 run->s390_sieic.ipb);
494 ioinst_handle_rsch(cpu, env->regs[1]);
497 ioinst_handle_rchp(cpu, env->regs[1]);
500 /* We do not provide this instruction, it is suppressed. */
503 ioinst_handle_sal(cpu, env->regs[1]);
506 /* Not provided, set CC = 3 for subchannel not operational */
509 case PRIV_B2_SCLP_CALL:
510 rc = kvm_sclp_service_call(cpu, run, ipbh0);
514 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
521 static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
527 /* just inject exception */
532 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
539 static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
545 /* just inject exception */
550 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipa1);
557 static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
559 CPUS390XState *env = &cpu->env;
562 cpu_synchronize_state(CPU(cpu));
563 ret = s390_virtio_hypercall(env);
564 if (ret == -EINVAL) {
565 enter_pgmcheck(cpu, PGM_SPECIFICATION);
572 static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
576 cpu_synchronize_state(CPU(cpu));
577 r1 = (run->s390_sieic.ipa & 0x00f0) >> 8;
578 r3 = run->s390_sieic.ipa & 0x000f;
579 handle_diag_308(&cpu->env, r1, r3);
582 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
584 static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
590 * For any diagnose call we support, bits 48-63 of the resulting
591 * address specify the function code; the remainder is ignored.
593 func_code = decode_basedisp_rs(&cpu->env, ipb) & DIAG_KVM_CODE_MASK;
596 kvm_handle_diag_308(cpu, run);
598 case DIAG_KVM_HYPERCALL:
599 r = handle_hypercall(cpu, run);
601 case DIAG_KVM_BREAKPOINT:
605 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
613 static int kvm_s390_cpu_start(S390CPU *cpu)
615 s390_add_running_cpu(cpu);
616 qemu_cpu_kick(CPU(cpu));
617 DPRINTF("DONE: KVM cpu start: %p\n", &cpu->env);
621 int kvm_s390_cpu_restart(S390CPU *cpu)
623 kvm_s390_interrupt(cpu, KVM_S390_RESTART, 0);
624 s390_add_running_cpu(cpu);
625 qemu_cpu_kick(CPU(cpu));
626 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu->env);
630 static void sigp_initial_cpu_reset(void *arg)
633 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
635 cpu_synchronize_state(cpu);
636 scc->initial_cpu_reset(cpu);
639 static void sigp_cpu_reset(void *arg)
642 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
644 cpu_synchronize_state(cpu);
648 #define SIGP_ORDER_MASK 0x000000ff
650 static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
652 CPUS390XState *env = &cpu->env;
656 uint64_t *statusreg = &env->regs[ipa1 >> 4];
659 cpu_synchronize_state(CPU(cpu));
662 order_code = decode_basedisp_rs(env, run->s390_sieic.ipb) & SIGP_ORDER_MASK;
664 cpu_addr = env->regs[ipa1 & 0x0f];
665 target_cpu = s390_cpu_addr2state(cpu_addr);
666 if (target_cpu == NULL) {
667 cc = 3; /* not operational */
671 switch (order_code) {
673 cc = kvm_s390_cpu_start(target_cpu);
676 cc = kvm_s390_cpu_restart(target_cpu);
679 *statusreg &= 0xffffffff00000000UL;
680 *statusreg |= SIGP_STAT_INVALID_PARAMETER;
681 cc = 1; /* status stored */
683 case SIGP_INITIAL_CPU_RESET:
684 run_on_cpu(CPU(target_cpu), sigp_initial_cpu_reset, CPU(target_cpu));
688 run_on_cpu(CPU(target_cpu), sigp_cpu_reset, CPU(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);
714 r = handle_b2(cpu, run, ipa1);
717 r = handle_b9(cpu, run, ipa1);
720 r = handle_eb(cpu, run, ipa1);
723 r = handle_diag(cpu, run, run->s390_sieic.ipb);
726 r = handle_sigp(cpu, run, ipa1);
731 enter_pgmcheck(cpu, 0x0001);
735 static bool is_special_wait_psw(CPUState *cs)
738 return cs->kvm_run->psw_addr == 0xfffUL;
741 static int handle_intercept(S390CPU *cpu)
743 CPUState *cs = CPU(cpu);
744 struct kvm_run *run = cs->kvm_run;
745 int icpt_code = run->s390_sieic.icptcode;
748 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code,
749 (long)cs->kvm_run->psw_addr);
751 case ICPT_INSTRUCTION:
752 handle_instruction(cpu, run);
755 /* disabled wait, since enabled wait is handled in kernel */
756 if (s390_del_running_cpu(cpu) == 0) {
757 if (is_special_wait_psw(cs)) {
758 qemu_system_shutdown_request();
762 data = qobject_from_jsonf("{ 'action': %s }", "pause");
763 monitor_protocol_event(QEVENT_GUEST_PANICKED, data);
764 qobject_decref(data);
765 vm_stop(RUN_STATE_GUEST_PANICKED);
771 if (s390_del_running_cpu(cpu) == 0) {
772 qemu_system_shutdown_request();
776 case ICPT_SOFT_INTERCEPT:
777 fprintf(stderr, "KVM unimplemented icpt SOFT\n");
781 fprintf(stderr, "KVM unimplemented icpt IO\n");
785 fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
793 static int handle_tsch(S390CPU *cpu)
795 CPUS390XState *env = &cpu->env;
796 CPUState *cs = CPU(cpu);
797 struct kvm_run *run = cs->kvm_run;
800 cpu_synchronize_state(cs);
802 ret = ioinst_handle_tsch(env, env->regs[1], run->s390_tsch.ipb);
804 /* Success; set condition code. */
807 } else if (ret < -1) {
810 * If an I/O interrupt had been dequeued, we have to reinject it.
812 if (run->s390_tsch.dequeued) {
813 uint16_t subchannel_id = run->s390_tsch.subchannel_id;
814 uint16_t subchannel_nr = run->s390_tsch.subchannel_nr;
815 uint32_t io_int_parm = run->s390_tsch.io_int_parm;
816 uint32_t io_int_word = run->s390_tsch.io_int_word;
817 uint32_t type = ((subchannel_id & 0xff00) << 24) |
818 ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
820 kvm_s390_interrupt_internal(cpu, type,
821 ((uint32_t)subchannel_id << 16)
823 ((uint64_t)io_int_parm << 32)
831 static int kvm_arch_handle_debug_exit(S390CPU *cpu)
836 int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
838 S390CPU *cpu = S390_CPU(cs);
841 switch (run->exit_reason) {
842 case KVM_EXIT_S390_SIEIC:
843 ret = handle_intercept(cpu);
845 case KVM_EXIT_S390_RESET:
846 qemu_system_reset_request();
848 case KVM_EXIT_S390_TSCH:
849 ret = handle_tsch(cpu);
852 ret = kvm_arch_handle_debug_exit(cpu);
855 fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
860 ret = EXCP_INTERRUPT;
865 bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
870 int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
875 int kvm_arch_on_sigbus(int code, void *addr)
880 void kvm_s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id,
881 uint16_t subchannel_nr, uint32_t io_int_parm,
882 uint32_t io_int_word)
886 if (io_int_word & IO_INT_WORD_AI) {
887 type = KVM_S390_INT_IO(1, 0, 0, 0);
889 type = ((subchannel_id & 0xff00) << 24) |
890 ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
892 kvm_s390_interrupt_internal(cpu, type,
893 ((uint32_t)subchannel_id << 16) | subchannel_nr,
894 ((uint64_t)io_int_parm << 32) | io_int_word, 1);
897 void kvm_s390_crw_mchk(S390CPU *cpu)
899 kvm_s390_interrupt_internal(cpu, KVM_S390_MCHK, 1 << 28,
900 0x00400f1d40330000, 1);
903 void kvm_s390_enable_css_support(S390CPU *cpu)
907 /* Activate host kernel channel subsystem support. */
908 r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
912 void kvm_arch_init_irq_routing(KVMState *s)
916 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
919 struct kvm_ioeventfd kick = {
920 .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
921 KVM_IOEVENTFD_FLAG_DATAMATCH,
922 .fd = event_notifier_get_fd(notifier),
927 if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
931 kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
933 return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);