2 * QEMU S390x KVM implementation
4 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
5 * Copyright IBM Corp. 2012
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program 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 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/osdep.h"
22 #include <sys/ioctl.h>
24 #include <linux/kvm.h>
25 #include <asm/ptrace.h>
27 #include "qemu-common.h"
30 #include "kvm_s390x.h"
31 #include "sysemu/kvm_int.h"
32 #include "qapi/error.h"
33 #include "qemu/error-report.h"
34 #include "qemu/timer.h"
35 #include "qemu/units.h"
36 #include "qemu/main-loop.h"
37 #include "qemu/mmap-alloc.h"
39 #include "sysemu/sysemu.h"
40 #include "sysemu/hw_accel.h"
41 #include "sysemu/runstate.h"
42 #include "sysemu/device_tree.h"
43 #include "exec/gdbstub.h"
44 #include "exec/ram_addr.h"
46 #include "hw/s390x/s390-pci-inst.h"
47 #include "hw/s390x/s390-pci-bus.h"
48 #include "hw/s390x/ipl.h"
49 #include "hw/s390x/ebcdic.h"
50 #include "exec/memattrs.h"
51 #include "hw/s390x/s390-virtio-ccw.h"
52 #include "hw/s390x/s390-virtio-hcall.h"
53 #include "hw/s390x/pv.h"
59 #define DPRINTF(fmt, ...) do { \
61 fprintf(stderr, fmt, ## __VA_ARGS__); \
65 #define kvm_vm_check_mem_attr(s, attr) \
66 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
68 #define IPA0_DIAG 0x8300
69 #define IPA0_SIGP 0xae00
70 #define IPA0_B2 0xb200
71 #define IPA0_B9 0xb900
72 #define IPA0_EB 0xeb00
73 #define IPA0_E3 0xe300
75 #define PRIV_B2_SCLP_CALL 0x20
76 #define PRIV_B2_CSCH 0x30
77 #define PRIV_B2_HSCH 0x31
78 #define PRIV_B2_MSCH 0x32
79 #define PRIV_B2_SSCH 0x33
80 #define PRIV_B2_STSCH 0x34
81 #define PRIV_B2_TSCH 0x35
82 #define PRIV_B2_TPI 0x36
83 #define PRIV_B2_SAL 0x37
84 #define PRIV_B2_RSCH 0x38
85 #define PRIV_B2_STCRW 0x39
86 #define PRIV_B2_STCPS 0x3a
87 #define PRIV_B2_RCHP 0x3b
88 #define PRIV_B2_SCHM 0x3c
89 #define PRIV_B2_CHSC 0x5f
90 #define PRIV_B2_SIGA 0x74
91 #define PRIV_B2_XSCH 0x76
93 #define PRIV_EB_SQBS 0x8a
94 #define PRIV_EB_PCISTB 0xd0
95 #define PRIV_EB_SIC 0xd1
97 #define PRIV_B9_EQBS 0x9c
98 #define PRIV_B9_CLP 0xa0
99 #define PRIV_B9_PCISTG 0xd0
100 #define PRIV_B9_PCILG 0xd2
101 #define PRIV_B9_RPCIT 0xd3
103 #define PRIV_E3_MPCIFC 0xd0
104 #define PRIV_E3_STPCIFC 0xd4
106 #define DIAG_TIMEREVENT 0x288
107 #define DIAG_IPL 0x308
108 #define DIAG_SET_CONTROL_PROGRAM_CODES 0x318
109 #define DIAG_KVM_HYPERCALL 0x500
110 #define DIAG_KVM_BREAKPOINT 0x501
112 #define ICPT_INSTRUCTION 0x04
113 #define ICPT_PROGRAM 0x08
114 #define ICPT_EXT_INT 0x14
115 #define ICPT_WAITPSW 0x1c
116 #define ICPT_SOFT_INTERCEPT 0x24
117 #define ICPT_CPU_STOP 0x28
118 #define ICPT_OPEREXC 0x2c
120 #define ICPT_PV_INSTR 0x68
121 #define ICPT_PV_INSTR_NOTIFICATION 0x6c
123 #define NR_LOCAL_IRQS 32
125 * Needs to be big enough to contain max_cpus emergency signals
126 * and in addition NR_LOCAL_IRQS interrupts
128 #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
129 (max_cpus + NR_LOCAL_IRQS))
131 * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
132 * as the dirty bitmap must be managed by bitops that take an int as
133 * position indicator. This would end at an unaligned address
134 * (0x7fffff00000). As future variants might provide larger pages
135 * and to make all addresses properly aligned, let us split at 4TB.
137 #define KVM_SLOT_MAX_BYTES (4UL * TiB)
139 static CPUWatchpoint hw_watchpoint
;
141 * We don't use a list because this structure is also used to transmit the
142 * hardware breakpoints to the kernel.
144 static struct kvm_hw_breakpoint
*hw_breakpoints
;
145 static int nb_hw_breakpoints
;
147 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
151 static int cap_sync_regs
;
152 static int cap_async_pf
;
153 static int cap_mem_op
;
154 static int cap_s390_irq
;
157 static int cap_hpage_1m
;
158 static int cap_vcpu_resets
;
159 static int cap_protected
;
161 static int active_cmma
;
163 static void *legacy_s390_alloc(size_t size
, uint64_t *align
, bool shared
);
165 static int kvm_s390_query_mem_limit(uint64_t *memory_limit
)
167 struct kvm_device_attr attr
= {
168 .group
= KVM_S390_VM_MEM_CTRL
,
169 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
170 .addr
= (uint64_t) memory_limit
,
173 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
176 int kvm_s390_set_mem_limit(uint64_t new_limit
, uint64_t *hw_limit
)
180 struct kvm_device_attr attr
= {
181 .group
= KVM_S390_VM_MEM_CTRL
,
182 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
183 .addr
= (uint64_t) &new_limit
,
186 if (!kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
190 rc
= kvm_s390_query_mem_limit(hw_limit
);
193 } else if (*hw_limit
< new_limit
) {
197 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
200 int kvm_s390_cmma_active(void)
205 static bool kvm_s390_cmma_available(void)
207 static bool initialized
, value
;
211 value
= kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_ENABLE_CMMA
) &&
212 kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_CLR_CMMA
);
217 void kvm_s390_cmma_reset(void)
220 struct kvm_device_attr attr
= {
221 .group
= KVM_S390_VM_MEM_CTRL
,
222 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
225 if (!kvm_s390_cmma_active()) {
229 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
230 trace_kvm_clear_cmma(rc
);
233 static void kvm_s390_enable_cmma(void)
236 struct kvm_device_attr attr
= {
237 .group
= KVM_S390_VM_MEM_CTRL
,
238 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
242 warn_report("CMM will not be enabled because it is not "
243 "compatible with huge memory backings.");
246 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
248 trace_kvm_enable_cmma(rc
);
251 static void kvm_s390_set_attr(uint64_t attr
)
253 struct kvm_device_attr attribute
= {
254 .group
= KVM_S390_VM_CRYPTO
,
258 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
261 error_report("Failed to set crypto device attribute %lu: %s",
262 attr
, strerror(-ret
));
266 static void kvm_s390_init_aes_kw(void)
268 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
270 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
272 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
275 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
276 kvm_s390_set_attr(attr
);
280 static void kvm_s390_init_dea_kw(void)
282 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
284 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
286 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
289 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
290 kvm_s390_set_attr(attr
);
294 void kvm_s390_crypto_reset(void)
296 if (s390_has_feat(S390_FEAT_MSA_EXT_3
)) {
297 kvm_s390_init_aes_kw();
298 kvm_s390_init_dea_kw();
302 void kvm_s390_set_max_pagesize(uint64_t pagesize
, Error
**errp
)
304 if (pagesize
== 4 * KiB
) {
308 if (!hpage_1m_allowed()) {
309 error_setg(errp
, "This QEMU machine does not support huge page "
314 if (pagesize
!= 1 * MiB
) {
315 error_setg(errp
, "Memory backing with 2G pages was specified, "
316 "but KVM does not support this memory backing");
320 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_HPAGE_1M
, 0)) {
321 error_setg(errp
, "Memory backing with 1M pages was specified, "
322 "but KVM does not support this memory backing");
329 int kvm_s390_get_hpage_1m(void)
334 static void ccw_machine_class_foreach(ObjectClass
*oc
, void *opaque
)
336 MachineClass
*mc
= MACHINE_CLASS(oc
);
338 mc
->default_cpu_type
= S390_CPU_TYPE_NAME("host");
341 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
343 object_class_foreach(ccw_machine_class_foreach
, TYPE_S390_CCW_MACHINE
,
346 if (!kvm_check_extension(kvm_state
, KVM_CAP_DEVICE_CTRL
)) {
347 error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - "
348 "please use kernel 3.15 or newer");
352 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
353 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
354 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
355 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
356 cap_vcpu_resets
= kvm_check_extension(s
, KVM_CAP_S390_VCPU_RESETS
);
357 cap_protected
= kvm_check_extension(s
, KVM_CAP_S390_PROTECTED
);
359 if (!kvm_check_extension(s
, KVM_CAP_S390_GMAP
)
360 || !kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
361 phys_mem_set_alloc(legacy_s390_alloc
);
364 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
365 kvm_vm_enable_cap(s
, KVM_CAP_S390_VECTOR_REGISTERS
, 0);
366 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
368 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_RI
, 0) == 0) {
372 if (cpu_model_allowed()) {
373 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_GS
, 0) == 0) {
379 * The migration interface for ais was introduced with kernel 4.13
380 * but the capability itself had been active since 4.12. As migration
381 * support is considered necessary, we only try to enable this for
382 * newer machine types if KVM_CAP_S390_AIS_MIGRATION is available.
384 if (cpu_model_allowed() && kvm_kernel_irqchip_allowed() &&
385 kvm_check_extension(s
, KVM_CAP_S390_AIS_MIGRATION
)) {
386 kvm_vm_enable_cap(s
, KVM_CAP_S390_AIS
, 0);
389 kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES
);
393 int kvm_arch_irqchip_create(KVMState
*s
)
398 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
400 return cpu
->cpu_index
;
403 int kvm_arch_init_vcpu(CPUState
*cs
)
405 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
406 S390CPU
*cpu
= S390_CPU(cs
);
407 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
408 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus
));
412 int kvm_arch_destroy_vcpu(CPUState
*cs
)
414 S390CPU
*cpu
= S390_CPU(cs
);
416 g_free(cpu
->irqstate
);
417 cpu
->irqstate
= NULL
;
422 static void kvm_s390_reset_vcpu(S390CPU
*cpu
, unsigned long type
)
424 CPUState
*cs
= CPU(cpu
);
427 * The reset call is needed here to reset in-kernel vcpu data that
428 * we can't access directly from QEMU (i.e. with older kernels
429 * which don't support sync_regs/ONE_REG). Before this ioctl
430 * cpu_synchronize_state() is called in common kvm code
433 if (kvm_vcpu_ioctl(cs
, type
)) {
434 error_report("CPU reset failed on CPU %i type %lx",
435 cs
->cpu_index
, type
);
439 void kvm_s390_reset_vcpu_initial(S390CPU
*cpu
)
441 kvm_s390_reset_vcpu(cpu
, KVM_S390_INITIAL_RESET
);
444 void kvm_s390_reset_vcpu_clear(S390CPU
*cpu
)
446 if (cap_vcpu_resets
) {
447 kvm_s390_reset_vcpu(cpu
, KVM_S390_CLEAR_RESET
);
449 kvm_s390_reset_vcpu(cpu
, KVM_S390_INITIAL_RESET
);
453 void kvm_s390_reset_vcpu_normal(S390CPU
*cpu
)
455 if (cap_vcpu_resets
) {
456 kvm_s390_reset_vcpu(cpu
, KVM_S390_NORMAL_RESET
);
460 static int can_sync_regs(CPUState
*cs
, int regs
)
462 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
465 int kvm_arch_put_registers(CPUState
*cs
, int level
)
467 S390CPU
*cpu
= S390_CPU(cs
);
468 CPUS390XState
*env
= &cpu
->env
;
469 struct kvm_sregs sregs
;
470 struct kvm_regs regs
;
471 struct kvm_fpu fpu
= {};
475 /* always save the PSW and the GPRS*/
476 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
477 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
479 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
480 for (i
= 0; i
< 16; i
++) {
481 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
482 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
485 for (i
= 0; i
< 16; i
++) {
486 regs
.gprs
[i
] = env
->regs
[i
];
488 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
494 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
495 for (i
= 0; i
< 32; i
++) {
496 cs
->kvm_run
->s
.regs
.vrs
[i
][0] = env
->vregs
[i
][0];
497 cs
->kvm_run
->s
.regs
.vrs
[i
][1] = env
->vregs
[i
][1];
499 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
500 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_VRS
;
501 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
502 for (i
= 0; i
< 16; i
++) {
503 cs
->kvm_run
->s
.regs
.fprs
[i
] = *get_freg(env
, i
);
505 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
506 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_FPRS
;
509 for (i
= 0; i
< 16; i
++) {
510 fpu
.fprs
[i
] = *get_freg(env
, i
);
514 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
520 /* Do we need to save more than that? */
521 if (level
== KVM_PUT_RUNTIME_STATE
) {
525 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
526 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
527 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
528 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
529 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
530 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
531 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
534 * These ONE_REGS are not protected by a capability. As they are only
535 * necessary for migration we just trace a possible error, but don't
536 * return with an error return code.
538 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
539 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
540 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
541 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
542 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
545 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
546 memcpy(cs
->kvm_run
->s
.regs
.riccb
, env
->riccb
, 64);
547 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_RICCB
;
550 /* pfault parameters */
551 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
552 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
553 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
554 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
555 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
556 } else if (cap_async_pf
) {
557 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
561 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
565 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
571 /* access registers and control registers*/
572 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
573 for (i
= 0; i
< 16; i
++) {
574 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
575 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
577 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
578 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
580 for (i
= 0; i
< 16; i
++) {
581 sregs
.acrs
[i
] = env
->aregs
[i
];
582 sregs
.crs
[i
] = env
->cregs
[i
];
584 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
590 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
591 memcpy(cs
->kvm_run
->s
.regs
.gscb
, env
->gscb
, 32);
592 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GSCB
;
595 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
596 cs
->kvm_run
->s
.regs
.bpbc
= env
->bpbc
;
597 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_BPBC
;
600 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
601 cs
->kvm_run
->s
.regs
.etoken
= env
->etoken
;
602 cs
->kvm_run
->s
.regs
.etoken_extension
= env
->etoken_extension
;
603 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ETOKEN
;
606 if (can_sync_regs(cs
, KVM_SYNC_DIAG318
)) {
607 cs
->kvm_run
->s
.regs
.diag318
= env
->diag318_info
;
608 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_DIAG318
;
611 /* Finally the prefix */
612 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
613 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
614 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
616 /* prefix is only supported via sync regs */
621 int kvm_arch_get_registers(CPUState
*cs
)
623 S390CPU
*cpu
= S390_CPU(cs
);
624 CPUS390XState
*env
= &cpu
->env
;
625 struct kvm_sregs sregs
;
626 struct kvm_regs regs
;
631 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
632 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
635 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
636 for (i
= 0; i
< 16; i
++) {
637 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
640 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
644 for (i
= 0; i
< 16; i
++) {
645 env
->regs
[i
] = regs
.gprs
[i
];
649 /* The ACRS and CRS */
650 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
651 for (i
= 0; i
< 16; i
++) {
652 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
653 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
656 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
660 for (i
= 0; i
< 16; i
++) {
661 env
->aregs
[i
] = sregs
.acrs
[i
];
662 env
->cregs
[i
] = sregs
.crs
[i
];
666 /* Floating point and vector registers */
667 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
668 for (i
= 0; i
< 32; i
++) {
669 env
->vregs
[i
][0] = cs
->kvm_run
->s
.regs
.vrs
[i
][0];
670 env
->vregs
[i
][1] = cs
->kvm_run
->s
.regs
.vrs
[i
][1];
672 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
673 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
674 for (i
= 0; i
< 16; i
++) {
675 *get_freg(env
, i
) = cs
->kvm_run
->s
.regs
.fprs
[i
];
677 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
679 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
683 for (i
= 0; i
< 16; i
++) {
684 *get_freg(env
, i
) = fpu
.fprs
[i
];
690 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
691 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
694 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
695 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
696 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
697 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
698 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
699 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
702 * These ONE_REGS are not protected by a capability. As they are only
703 * necessary for migration we just trace a possible error, but don't
704 * return with an error return code.
706 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
707 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
708 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
709 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
710 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
713 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
714 memcpy(env
->riccb
, cs
->kvm_run
->s
.regs
.riccb
, 64);
717 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
718 memcpy(env
->gscb
, cs
->kvm_run
->s
.regs
.gscb
, 32);
721 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
722 env
->bpbc
= cs
->kvm_run
->s
.regs
.bpbc
;
725 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
726 env
->etoken
= cs
->kvm_run
->s
.regs
.etoken
;
727 env
->etoken_extension
= cs
->kvm_run
->s
.regs
.etoken_extension
;
730 /* pfault parameters */
731 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
732 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
733 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
734 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
735 } else if (cap_async_pf
) {
736 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
740 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
744 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
750 if (can_sync_regs(cs
, KVM_SYNC_DIAG318
)) {
751 env
->diag318_info
= cs
->kvm_run
->s
.regs
.diag318
;
757 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
760 struct kvm_device_attr attr
= {
761 .group
= KVM_S390_VM_TOD
,
762 .attr
= KVM_S390_VM_TOD_LOW
,
763 .addr
= (uint64_t)tod_low
,
766 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
771 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
772 attr
.addr
= (uint64_t)tod_high
;
773 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
776 int kvm_s390_get_clock_ext(uint8_t *tod_high
, uint64_t *tod_low
)
779 struct kvm_s390_vm_tod_clock gtod
;
780 struct kvm_device_attr attr
= {
781 .group
= KVM_S390_VM_TOD
,
782 .attr
= KVM_S390_VM_TOD_EXT
,
783 .addr
= (uint64_t)>od
,
786 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
787 *tod_high
= gtod
.epoch_idx
;
793 int kvm_s390_set_clock(uint8_t tod_high
, uint64_t tod_low
)
796 struct kvm_device_attr attr
= {
797 .group
= KVM_S390_VM_TOD
,
798 .attr
= KVM_S390_VM_TOD_LOW
,
799 .addr
= (uint64_t)&tod_low
,
802 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
807 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
808 attr
.addr
= (uint64_t)&tod_high
;
809 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
812 int kvm_s390_set_clock_ext(uint8_t tod_high
, uint64_t tod_low
)
814 struct kvm_s390_vm_tod_clock gtod
= {
815 .epoch_idx
= tod_high
,
818 struct kvm_device_attr attr
= {
819 .group
= KVM_S390_VM_TOD
,
820 .attr
= KVM_S390_VM_TOD_EXT
,
821 .addr
= (uint64_t)>od
,
824 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
829 * @addr: the logical start address in guest memory
830 * @ar: the access register number
831 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
832 * @len: length that should be transferred
833 * @is_write: true = write, false = read
834 * Returns: 0 on success, non-zero if an exception or error occurred
836 * Use KVM ioctl to read/write from/to guest memory. An access exception
837 * is injected into the vCPU in case of translation errors.
839 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
840 int len
, bool is_write
)
842 struct kvm_s390_mem_op mem_op
= {
844 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
846 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
847 : KVM_S390_MEMOP_LOGICAL_READ
,
848 .buf
= (uint64_t)hostbuf
,
857 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
860 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
862 warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret
));
867 int kvm_s390_mem_op_pv(S390CPU
*cpu
, uint64_t offset
, void *hostbuf
,
868 int len
, bool is_write
)
870 struct kvm_s390_mem_op mem_op
= {
871 .sida_offset
= offset
,
873 .op
= is_write
? KVM_S390_MEMOP_SIDA_WRITE
874 : KVM_S390_MEMOP_SIDA_READ
,
875 .buf
= (uint64_t)hostbuf
,
879 if (!cap_mem_op
|| !cap_protected
) {
883 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
885 error_report("KVM_S390_MEM_OP failed: %s", strerror(-ret
));
892 * Legacy layout for s390:
893 * Older S390 KVM requires the topmost vma of the RAM to be
894 * smaller than an system defined value, which is at least 256GB.
895 * Larger systems have larger values. We put the guest between
896 * the end of data segment (system break) and this value. We
897 * use 32GB as a base to have enough room for the system break
898 * to grow. We also have to use MAP parameters that avoid
899 * read-only mapping of guest pages.
901 static void *legacy_s390_alloc(size_t size
, uint64_t *align
, bool shared
)
906 /* we only support one allocation, which is enough for initial ram */
910 mem
= mmap((void *) 0x800000000ULL
, size
,
911 PROT_EXEC
|PROT_READ
|PROT_WRITE
,
912 MAP_SHARED
| MAP_ANONYMOUS
| MAP_FIXED
, -1, 0);
913 if (mem
== MAP_FAILED
) {
917 *align
= QEMU_VMALLOC_ALIGN
;
922 static uint8_t const *sw_bp_inst
;
923 static uint8_t sw_bp_ilen
;
925 static void determine_sw_breakpoint_instr(void)
927 /* DIAG 501 is used for sw breakpoints with old kernels */
928 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
929 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
930 static const uint8_t instr_0x0000
[] = {0x00, 0x00};
935 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_USER_INSTR0
, 0)) {
936 sw_bp_inst
= diag_501
;
937 sw_bp_ilen
= sizeof(diag_501
);
938 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
940 sw_bp_inst
= instr_0x0000
;
941 sw_bp_ilen
= sizeof(instr_0x0000
);
942 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
946 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
948 determine_sw_breakpoint_instr();
950 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
952 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)sw_bp_inst
, sw_bp_ilen
, 1)) {
958 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
962 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sw_bp_ilen
, 0)) {
964 } else if (memcmp(t
, sw_bp_inst
, sw_bp_ilen
)) {
966 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
974 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
979 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
980 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
981 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
982 return &hw_breakpoints
[n
];
989 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
993 if (find_hw_breakpoint(addr
, len
, type
)) {
997 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
999 if (!hw_breakpoints
) {
1000 nb_hw_breakpoints
= 0;
1001 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
1004 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
1007 if (!hw_breakpoints
) {
1008 nb_hw_breakpoints
= 0;
1012 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
1013 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
1014 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
1016 nb_hw_breakpoints
++;
1021 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
1022 target_ulong len
, int type
)
1025 case GDB_BREAKPOINT_HW
:
1028 case GDB_WATCHPOINT_WRITE
:
1032 type
= KVM_HW_WP_WRITE
;
1037 return insert_hw_breakpoint(addr
, len
, type
);
1040 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
1041 target_ulong len
, int type
)
1044 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
1050 nb_hw_breakpoints
--;
1051 if (nb_hw_breakpoints
> 0) {
1053 * In order to trim the array, move the last element to the position to
1054 * be removed - if necessary.
1056 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
1057 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
1059 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
1061 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
1063 g_free(hw_breakpoints
);
1064 hw_breakpoints
= NULL
;
1070 void kvm_arch_remove_all_hw_breakpoints(void)
1072 nb_hw_breakpoints
= 0;
1073 g_free(hw_breakpoints
);
1074 hw_breakpoints
= NULL
;
1077 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
1081 if (nb_hw_breakpoints
> 0) {
1082 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
1083 dbg
->arch
.hw_bp
= hw_breakpoints
;
1085 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
1086 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
1087 hw_breakpoints
[i
].addr
);
1089 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
1091 dbg
->arch
.nr_hw_bp
= 0;
1092 dbg
->arch
.hw_bp
= NULL
;
1096 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
1100 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
1102 return MEMTXATTRS_UNSPECIFIED
;
1105 int kvm_arch_process_async_events(CPUState
*cs
)
1110 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
1111 struct kvm_s390_interrupt
*interrupt
)
1115 interrupt
->type
= irq
->type
;
1116 switch (irq
->type
) {
1117 case KVM_S390_INT_VIRTIO
:
1118 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1120 case KVM_S390_INT_PFAULT_INIT
:
1121 case KVM_S390_INT_PFAULT_DONE
:
1122 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
1124 case KVM_S390_PROGRAM_INT
:
1125 interrupt
->parm
= irq
->u
.pgm
.code
;
1127 case KVM_S390_SIGP_SET_PREFIX
:
1128 interrupt
->parm
= irq
->u
.prefix
.address
;
1130 case KVM_S390_INT_SERVICE
:
1131 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1134 interrupt
->parm
= irq
->u
.mchk
.cr14
;
1135 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
1137 case KVM_S390_INT_EXTERNAL_CALL
:
1138 interrupt
->parm
= irq
->u
.extcall
.code
;
1140 case KVM_S390_INT_EMERGENCY
:
1141 interrupt
->parm
= irq
->u
.emerg
.code
;
1143 case KVM_S390_SIGP_STOP
:
1144 case KVM_S390_RESTART
:
1145 break; /* These types have no parameters */
1146 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1147 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
1148 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
1149 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
1150 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
1159 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
1161 struct kvm_s390_interrupt kvmint
= {};
1164 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1166 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1170 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
1172 fprintf(stderr
, "KVM failed to inject interrupt\n");
1177 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
1179 CPUState
*cs
= CPU(cpu
);
1183 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
1187 error_report("KVM failed to inject interrupt %llx", irq
->type
);
1191 inject_vcpu_irq_legacy(cs
, irq
);
1194 void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq
*irq
)
1196 struct kvm_s390_interrupt kvmint
= {};
1199 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1201 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1205 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
1207 fprintf(stderr
, "KVM failed to inject interrupt\n");
1212 void kvm_s390_program_interrupt(S390CPU
*cpu
, uint16_t code
)
1214 struct kvm_s390_irq irq
= {
1215 .type
= KVM_S390_PROGRAM_INT
,
1218 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
1220 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1223 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
1225 struct kvm_s390_irq irq
= {
1226 .type
= KVM_S390_PROGRAM_INT
,
1228 .u
.pgm
.trans_exc_code
= te_code
,
1229 .u
.pgm
.exc_access_id
= te_code
& 3,
1232 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1235 static void kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
1238 CPUS390XState
*env
= &cpu
->env
;
1243 sccb
= env
->regs
[ipbh0
& 0xf];
1244 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
1246 switch (run
->s390_sieic
.icptcode
) {
1247 case ICPT_PV_INSTR_NOTIFICATION
:
1248 g_assert(s390_is_pv());
1249 /* The notification intercepts are currently handled by KVM */
1250 error_report("unexpected SCLP PV notification");
1254 g_assert(s390_is_pv());
1255 sclp_service_call_protected(env
, sccb
, code
);
1256 /* Setting the CC is done by the Ultravisor. */
1258 case ICPT_INSTRUCTION
:
1259 g_assert(!s390_is_pv());
1260 r
= sclp_service_call(env
, sccb
, code
);
1262 kvm_s390_program_interrupt(cpu
, -r
);
1269 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1271 CPUS390XState
*env
= &cpu
->env
;
1273 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
1277 ioinst_handle_xsch(cpu
, env
->regs
[1], RA_IGNORED
);
1280 ioinst_handle_csch(cpu
, env
->regs
[1], RA_IGNORED
);
1283 ioinst_handle_hsch(cpu
, env
->regs
[1], RA_IGNORED
);
1286 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1289 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1292 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1295 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1298 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1299 fprintf(stderr
, "Spurious tsch intercept\n");
1302 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1305 /* This should have been handled by kvm already. */
1306 fprintf(stderr
, "Spurious tpi intercept\n");
1309 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1310 run
->s390_sieic
.ipb
, RA_IGNORED
);
1313 ioinst_handle_rsch(cpu
, env
->regs
[1], RA_IGNORED
);
1316 ioinst_handle_rchp(cpu
, env
->regs
[1], RA_IGNORED
);
1319 /* We do not provide this instruction, it is suppressed. */
1322 ioinst_handle_sal(cpu
, env
->regs
[1], RA_IGNORED
);
1325 /* Not provided, set CC = 3 for subchannel not operational */
1328 case PRIV_B2_SCLP_CALL
:
1329 kvm_sclp_service_call(cpu
, run
, ipbh0
);
1333 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1340 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1343 CPUS390XState
*env
= &cpu
->env
;
1344 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1345 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1346 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1347 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1349 if (disp2
& 0x80000) {
1350 disp2
+= 0xfff00000;
1356 return (base2
? env
->regs
[base2
] : 0) +
1357 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1360 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1363 CPUS390XState
*env
= &cpu
->env
;
1364 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1365 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1366 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1368 if (disp2
& 0x80000) {
1369 disp2
+= 0xfff00000;
1375 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1378 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1380 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1382 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1383 return clp_service_call(cpu
, r2
, RA_IGNORED
);
1389 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1391 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1392 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1394 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1395 return pcilg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1401 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1403 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1404 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1406 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1407 return pcistg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1413 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1415 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1419 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1420 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1422 return stpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1428 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1430 CPUS390XState
*env
= &cpu
->env
;
1431 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1432 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1437 mode
= env
->regs
[r1
] & 0xffff;
1438 isc
= (env
->regs
[r3
] >> 27) & 0x7;
1439 r
= css_do_sic(env
, isc
, mode
);
1441 kvm_s390_program_interrupt(cpu
, -r
);
1447 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1449 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1450 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1452 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1453 return rpcit_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1459 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1461 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1462 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1466 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1467 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1469 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
, RA_IGNORED
);
1475 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1477 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1481 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1482 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1484 return mpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1490 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1496 r
= kvm_clp_service_call(cpu
, run
);
1498 case PRIV_B9_PCISTG
:
1499 r
= kvm_pcistg_service_call(cpu
, run
);
1502 r
= kvm_pcilg_service_call(cpu
, run
);
1505 r
= kvm_rpcit_service_call(cpu
, run
);
1508 /* just inject exception */
1513 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1520 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1525 case PRIV_EB_PCISTB
:
1526 r
= kvm_pcistb_service_call(cpu
, run
);
1529 r
= kvm_sic_service_call(cpu
, run
);
1532 /* just inject exception */
1537 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1544 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1549 case PRIV_E3_MPCIFC
:
1550 r
= kvm_mpcifc_service_call(cpu
, run
);
1552 case PRIV_E3_STPCIFC
:
1553 r
= kvm_stpcifc_service_call(cpu
, run
);
1557 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1564 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1566 CPUS390XState
*env
= &cpu
->env
;
1569 ret
= s390_virtio_hypercall(env
);
1570 if (ret
== -EINVAL
) {
1571 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1578 static void kvm_handle_diag_288(S390CPU
*cpu
, struct kvm_run
*run
)
1583 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1584 r3
= run
->s390_sieic
.ipa
& 0x000f;
1585 rc
= handle_diag_288(&cpu
->env
, r1
, r3
);
1587 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1591 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1595 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1596 r3
= run
->s390_sieic
.ipa
& 0x000f;
1597 handle_diag_308(&cpu
->env
, r1
, r3
, RA_IGNORED
);
1600 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1602 CPUS390XState
*env
= &cpu
->env
;
1605 pc
= env
->psw
.addr
- sw_bp_ilen
;
1606 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1614 void kvm_s390_set_diag318(CPUState
*cs
, uint64_t diag318_info
)
1616 CPUS390XState
*env
= &S390_CPU(cs
)->env
;
1618 /* Feat bit is set only if KVM supports sync for diag318 */
1619 if (s390_has_feat(S390_FEAT_DIAG_318
)) {
1620 env
->diag318_info
= diag318_info
;
1621 cs
->kvm_run
->s
.regs
.diag318
= diag318_info
;
1622 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_DIAG318
;
1626 static void handle_diag_318(S390CPU
*cpu
, struct kvm_run
*run
)
1628 uint64_t reg
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1629 uint64_t diag318_info
= run
->s
.regs
.gprs
[reg
];
1633 * DIAG 318 can only be enabled with KVM support. As such, let's
1634 * ensure a guest cannot execute this instruction erroneously.
1636 if (!s390_has_feat(S390_FEAT_DIAG_318
)) {
1637 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1642 run_on_cpu(t
, s390_do_cpu_set_diag318
,
1643 RUN_ON_CPU_HOST_ULONG(diag318_info
));
1647 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1649 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1655 * For any diagnose call we support, bits 48-63 of the resulting
1656 * address specify the function code; the remainder is ignored.
1658 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1659 switch (func_code
) {
1660 case DIAG_TIMEREVENT
:
1661 kvm_handle_diag_288(cpu
, run
);
1664 kvm_handle_diag_308(cpu
, run
);
1666 case DIAG_SET_CONTROL_PROGRAM_CODES
:
1667 handle_diag_318(cpu
, run
);
1669 case DIAG_KVM_HYPERCALL
:
1670 r
= handle_hypercall(cpu
, run
);
1672 case DIAG_KVM_BREAKPOINT
:
1673 r
= handle_sw_breakpoint(cpu
, run
);
1676 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1677 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1684 static int kvm_s390_handle_sigp(S390CPU
*cpu
, uint8_t ipa1
, uint32_t ipb
)
1686 CPUS390XState
*env
= &cpu
->env
;
1687 const uint8_t r1
= ipa1
>> 4;
1688 const uint8_t r3
= ipa1
& 0x0f;
1692 /* get order code */
1693 order
= decode_basedisp_rs(env
, ipb
, NULL
) & SIGP_ORDER_MASK
;
1695 ret
= handle_sigp(env
, order
, r1
, r3
);
1700 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1702 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1703 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1706 DPRINTF("handle_instruction 0x%x 0x%x\n",
1707 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1710 r
= handle_b2(cpu
, run
, ipa1
);
1713 r
= handle_b9(cpu
, run
, ipa1
);
1716 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1719 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1722 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1725 r
= kvm_s390_handle_sigp(cpu
, ipa1
, run
->s390_sieic
.ipb
);
1731 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1737 static void unmanageable_intercept(S390CPU
*cpu
, S390CrashReason reason
,
1740 CPUState
*cs
= CPU(cpu
);
1743 cpu
->env
.crash_reason
= reason
;
1744 qemu_system_guest_panicked(cpu_get_crash_info(cs
));
1747 /* try to detect pgm check loops */
1748 static int handle_oper_loop(S390CPU
*cpu
, struct kvm_run
*run
)
1750 CPUState
*cs
= CPU(cpu
);
1753 newpsw
.mask
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1754 offsetof(LowCore
, program_new_psw
));
1755 newpsw
.addr
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1756 offsetof(LowCore
, program_new_psw
) + 8);
1757 oldpsw
.mask
= run
->psw_mask
;
1758 oldpsw
.addr
= run
->psw_addr
;
1760 * Avoid endless loops of operation exceptions, if the pgm new
1761 * PSW will cause a new operation exception.
1762 * The heuristic checks if the pgm new psw is within 6 bytes before
1763 * the faulting psw address (with same DAT, AS settings) and the
1764 * new psw is not a wait psw and the fault was not triggered by
1765 * problem state. In that case go into crashed state.
1768 if (oldpsw
.addr
- newpsw
.addr
<= 6 &&
1769 !(newpsw
.mask
& PSW_MASK_WAIT
) &&
1770 !(oldpsw
.mask
& PSW_MASK_PSTATE
) &&
1771 (newpsw
.mask
& PSW_MASK_ASC
) == (oldpsw
.mask
& PSW_MASK_ASC
) &&
1772 (newpsw
.mask
& PSW_MASK_DAT
) == (oldpsw
.mask
& PSW_MASK_DAT
)) {
1773 unmanageable_intercept(cpu
, S390_CRASH_REASON_OPINT_LOOP
,
1774 offsetof(LowCore
, program_new_psw
));
1780 static int handle_intercept(S390CPU
*cpu
)
1782 CPUState
*cs
= CPU(cpu
);
1783 struct kvm_run
*run
= cs
->kvm_run
;
1784 int icpt_code
= run
->s390_sieic
.icptcode
;
1787 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
,
1788 (long)cs
->kvm_run
->psw_addr
);
1789 switch (icpt_code
) {
1790 case ICPT_INSTRUCTION
:
1792 case ICPT_PV_INSTR_NOTIFICATION
:
1793 r
= handle_instruction(cpu
, run
);
1796 unmanageable_intercept(cpu
, S390_CRASH_REASON_PGMINT_LOOP
,
1797 offsetof(LowCore
, program_new_psw
));
1801 unmanageable_intercept(cpu
, S390_CRASH_REASON_EXTINT_LOOP
,
1802 offsetof(LowCore
, external_new_psw
));
1806 /* disabled wait, since enabled wait is handled in kernel */
1807 s390_handle_wait(cpu
);
1811 do_stop_interrupt(&cpu
->env
);
1815 /* check for break points */
1816 r
= handle_sw_breakpoint(cpu
, run
);
1818 /* Then check for potential pgm check loops */
1819 r
= handle_oper_loop(cpu
, run
);
1821 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1825 case ICPT_SOFT_INTERCEPT
:
1826 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1830 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1834 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1842 static int handle_tsch(S390CPU
*cpu
)
1844 CPUState
*cs
= CPU(cpu
);
1845 struct kvm_run
*run
= cs
->kvm_run
;
1848 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
,
1853 * If an I/O interrupt had been dequeued, we have to reinject it.
1855 if (run
->s390_tsch
.dequeued
) {
1856 s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1857 run
->s390_tsch
.subchannel_nr
,
1858 run
->s390_tsch
.io_int_parm
,
1859 run
->s390_tsch
.io_int_word
);
1866 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
1868 const MachineState
*ms
= MACHINE(qdev_get_machine());
1869 uint16_t conf_cpus
= 0, reserved_cpus
= 0;
1874 s390_cpu_pv_mem_read(cpu
, 0, &sysib
, sizeof(sysib
));
1875 } else if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
1878 /* Shift the stack of Extended Names to prepare for our own data */
1879 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
1880 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
1881 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1882 * assumed it's not capable of managing Extended Names for lower levels.
1884 for (del
= 1; del
< sysib
.count
; del
++) {
1885 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
1889 if (del
< sysib
.count
) {
1890 memset(sysib
.ext_names
[del
], 0,
1891 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
1894 /* count the cpus and split them into configured and reserved ones */
1895 for (i
= 0; i
< ms
->possible_cpus
->len
; i
++) {
1896 if (ms
->possible_cpus
->cpus
[i
].cpu
) {
1902 sysib
.vm
[0].total_cpus
= conf_cpus
+ reserved_cpus
;
1903 sysib
.vm
[0].conf_cpus
= conf_cpus
;
1904 sysib
.vm
[0].reserved_cpus
= reserved_cpus
;
1906 /* Insert short machine name in EBCDIC, padded with blanks */
1908 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
1909 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
1910 strlen(qemu_name
)));
1912 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
1913 memset(sysib
.ext_names
[0], 0, sizeof(sysib
.ext_names
[0]));
1914 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1915 * considered by s390 as not capable of providing any Extended Name.
1916 * Therefore if no name was specified on qemu invocation, we go with the
1917 * same "KVMguest" default, which KVM has filled into short name field.
1920 strncpy((char *)sysib
.ext_names
[0], qemu_name
,
1921 sizeof(sysib
.ext_names
[0]));
1923 strcpy((char *)sysib
.ext_names
[0], "KVMguest");
1926 memcpy(sysib
.vm
[0].uuid
, &qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
1929 s390_cpu_pv_mem_write(cpu
, 0, &sysib
, sizeof(sysib
));
1931 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
1935 static int handle_stsi(S390CPU
*cpu
)
1937 CPUState
*cs
= CPU(cpu
);
1938 struct kvm_run
*run
= cs
->kvm_run
;
1940 switch (run
->s390_stsi
.fc
) {
1942 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
1945 /* Only sysib 3.2.2 needs post-handling for now. */
1946 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
1953 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1955 CPUState
*cs
= CPU(cpu
);
1956 struct kvm_run
*run
= cs
->kvm_run
;
1959 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1961 switch (arch_info
->type
) {
1962 case KVM_HW_WP_WRITE
:
1963 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1964 cs
->watchpoint_hit
= &hw_watchpoint
;
1965 hw_watchpoint
.vaddr
= arch_info
->addr
;
1966 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1971 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1975 case KVM_SINGLESTEP
:
1976 if (cs
->singlestep_enabled
) {
1987 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1989 S390CPU
*cpu
= S390_CPU(cs
);
1992 qemu_mutex_lock_iothread();
1994 kvm_cpu_synchronize_state(cs
);
1996 switch (run
->exit_reason
) {
1997 case KVM_EXIT_S390_SIEIC
:
1998 ret
= handle_intercept(cpu
);
2000 case KVM_EXIT_S390_RESET
:
2001 s390_ipl_reset_request(cs
, S390_RESET_REIPL
);
2003 case KVM_EXIT_S390_TSCH
:
2004 ret
= handle_tsch(cpu
);
2006 case KVM_EXIT_S390_STSI
:
2007 ret
= handle_stsi(cpu
);
2009 case KVM_EXIT_DEBUG
:
2010 ret
= kvm_arch_handle_debug_exit(cpu
);
2013 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
2016 qemu_mutex_unlock_iothread();
2019 ret
= EXCP_INTERRUPT
;
2024 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
2029 void kvm_s390_enable_css_support(S390CPU
*cpu
)
2033 /* Activate host kernel channel subsystem support. */
2034 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
2038 void kvm_arch_init_irq_routing(KVMState
*s
)
2041 * Note that while irqchip capabilities generally imply that cpustates
2042 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2043 * have to override the common code kvm_halt_in_kernel_allowed setting.
2045 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
2046 kvm_gsi_routing_allowed
= true;
2047 kvm_halt_in_kernel_allowed
= false;
2051 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
2052 int vq
, bool assign
)
2054 struct kvm_ioeventfd kick
= {
2055 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
2056 KVM_IOEVENTFD_FLAG_DATAMATCH
,
2057 .fd
= event_notifier_get_fd(notifier
),
2062 trace_kvm_assign_subch_ioeventfd(kick
.fd
, kick
.addr
, assign
,
2064 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
2068 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
2070 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
2073 int kvm_s390_get_ri(void)
2078 int kvm_s390_get_gs(void)
2083 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
2085 struct kvm_mp_state mp_state
= {};
2088 /* the kvm part might not have been initialized yet */
2089 if (CPU(cpu
)->kvm_state
== NULL
) {
2093 switch (cpu_state
) {
2094 case S390_CPU_STATE_STOPPED
:
2095 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
2097 case S390_CPU_STATE_CHECK_STOP
:
2098 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
2100 case S390_CPU_STATE_OPERATING
:
2101 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
2103 case S390_CPU_STATE_LOAD
:
2104 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
2107 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2112 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
2114 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
2121 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
2123 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
2124 struct kvm_s390_irq_state irq_state
= {
2125 .buf
= (uint64_t) cpu
->irqstate
,
2126 .len
= VCPU_IRQ_BUF_SIZE(max_cpus
),
2128 CPUState
*cs
= CPU(cpu
);
2131 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2135 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
2137 cpu
->irqstate_saved_size
= 0;
2138 error_report("Migration of interrupt state failed");
2142 cpu
->irqstate_saved_size
= bytes
;
2145 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
2147 CPUState
*cs
= CPU(cpu
);
2148 struct kvm_s390_irq_state irq_state
= {
2149 .buf
= (uint64_t) cpu
->irqstate
,
2150 .len
= cpu
->irqstate_saved_size
,
2154 if (cpu
->irqstate_saved_size
== 0) {
2158 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2162 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
2164 error_report("Setting interrupt state failed %d", r
);
2169 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2170 uint64_t address
, uint32_t data
, PCIDevice
*dev
)
2172 S390PCIBusDevice
*pbdev
;
2173 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2176 DPRINTF("add_msi_route no pci device\n");
2180 pbdev
= s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev
)->id
);
2182 DPRINTF("add_msi_route no zpci device\n");
2186 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2188 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2189 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2190 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2191 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
+ vec
;
2192 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;
2196 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry
*route
,
2197 int vector
, PCIDevice
*dev
)
2202 int kvm_arch_release_virq_post(int virq
)
2207 int kvm_arch_msi_data_to_gsi(uint32_t data
)
2212 static int query_cpu_subfunc(S390FeatBitmap features
)
2214 struct kvm_s390_vm_cpu_subfunc prop
= {};
2215 struct kvm_device_attr attr
= {
2216 .group
= KVM_S390_VM_CPU_MODEL
,
2217 .attr
= KVM_S390_VM_CPU_MACHINE_SUBFUNC
,
2218 .addr
= (uint64_t) &prop
,
2222 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2228 * We're going to add all subfunctions now, if the corresponding feature
2229 * is available that unlocks the query functions.
2231 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2232 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2233 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2235 if (test_bit(S390_FEAT_MSA
, features
)) {
2236 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2237 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2238 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2239 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2240 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2242 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2243 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2245 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2246 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2247 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2248 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2249 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2251 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2252 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2254 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2255 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2257 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2258 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2260 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2261 s390_add_from_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2263 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2264 s390_add_from_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2269 static int configure_cpu_subfunc(const S390FeatBitmap features
)
2271 struct kvm_s390_vm_cpu_subfunc prop
= {};
2272 struct kvm_device_attr attr
= {
2273 .group
= KVM_S390_VM_CPU_MODEL
,
2274 .attr
= KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
,
2275 .addr
= (uint64_t) &prop
,
2278 if (!kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2279 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
)) {
2280 /* hardware support might be missing, IBC will handle most of this */
2284 s390_fill_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2285 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2286 s390_fill_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2288 if (test_bit(S390_FEAT_MSA
, features
)) {
2289 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2290 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2291 s390_fill_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2292 s390_fill_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2293 s390_fill_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2295 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2296 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2298 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2299 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2300 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2301 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2302 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2304 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2305 s390_fill_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2307 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2308 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2310 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2311 s390_fill_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2313 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2314 s390_fill_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2316 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2317 s390_fill_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2319 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2322 static int kvm_to_feat
[][2] = {
2323 { KVM_S390_VM_CPU_FEAT_ESOP
, S390_FEAT_ESOP
},
2324 { KVM_S390_VM_CPU_FEAT_SIEF2
, S390_FEAT_SIE_F2
},
2325 { KVM_S390_VM_CPU_FEAT_64BSCAO
, S390_FEAT_SIE_64BSCAO
},
2326 { KVM_S390_VM_CPU_FEAT_SIIF
, S390_FEAT_SIE_SIIF
},
2327 { KVM_S390_VM_CPU_FEAT_GPERE
, S390_FEAT_SIE_GPERE
},
2328 { KVM_S390_VM_CPU_FEAT_GSLS
, S390_FEAT_SIE_GSLS
},
2329 { KVM_S390_VM_CPU_FEAT_IB
, S390_FEAT_SIE_IB
},
2330 { KVM_S390_VM_CPU_FEAT_CEI
, S390_FEAT_SIE_CEI
},
2331 { KVM_S390_VM_CPU_FEAT_IBS
, S390_FEAT_SIE_IBS
},
2332 { KVM_S390_VM_CPU_FEAT_SKEY
, S390_FEAT_SIE_SKEY
},
2333 { KVM_S390_VM_CPU_FEAT_CMMA
, S390_FEAT_SIE_CMMA
},
2334 { KVM_S390_VM_CPU_FEAT_PFMFI
, S390_FEAT_SIE_PFMFI
},
2335 { KVM_S390_VM_CPU_FEAT_SIGPIF
, S390_FEAT_SIE_SIGPIF
},
2336 { KVM_S390_VM_CPU_FEAT_KSS
, S390_FEAT_SIE_KSS
},
2339 static int query_cpu_feat(S390FeatBitmap features
)
2341 struct kvm_s390_vm_cpu_feat prop
= {};
2342 struct kvm_device_attr attr
= {
2343 .group
= KVM_S390_VM_CPU_MODEL
,
2344 .attr
= KVM_S390_VM_CPU_MACHINE_FEAT
,
2345 .addr
= (uint64_t) &prop
,
2350 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2355 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2356 if (test_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
)) {
2357 set_bit(kvm_to_feat
[i
][1], features
);
2363 static int configure_cpu_feat(const S390FeatBitmap features
)
2365 struct kvm_s390_vm_cpu_feat prop
= {};
2366 struct kvm_device_attr attr
= {
2367 .group
= KVM_S390_VM_CPU_MODEL
,
2368 .attr
= KVM_S390_VM_CPU_PROCESSOR_FEAT
,
2369 .addr
= (uint64_t) &prop
,
2373 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2374 if (test_bit(kvm_to_feat
[i
][1], features
)) {
2375 set_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
);
2378 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2381 bool kvm_s390_cpu_models_supported(void)
2383 if (!cpu_model_allowed()) {
2384 /* compatibility machines interfere with the cpu model */
2387 return kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2388 KVM_S390_VM_CPU_MACHINE
) &&
2389 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2390 KVM_S390_VM_CPU_PROCESSOR
) &&
2391 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2392 KVM_S390_VM_CPU_MACHINE_FEAT
) &&
2393 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2394 KVM_S390_VM_CPU_PROCESSOR_FEAT
) &&
2395 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2396 KVM_S390_VM_CPU_MACHINE_SUBFUNC
);
2399 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
)
2401 struct kvm_s390_vm_cpu_machine prop
= {};
2402 struct kvm_device_attr attr
= {
2403 .group
= KVM_S390_VM_CPU_MODEL
,
2404 .attr
= KVM_S390_VM_CPU_MACHINE
,
2405 .addr
= (uint64_t) &prop
,
2407 uint16_t unblocked_ibc
= 0, cpu_type
= 0;
2410 memset(model
, 0, sizeof(*model
));
2412 if (!kvm_s390_cpu_models_supported()) {
2413 error_setg(errp
, "KVM doesn't support CPU models");
2417 /* query the basic cpu model properties */
2418 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2420 error_setg(errp
, "KVM: Error querying host CPU model: %d", rc
);
2424 cpu_type
= cpuid_type(prop
.cpuid
);
2425 if (has_ibc(prop
.ibc
)) {
2426 model
->lowest_ibc
= lowest_ibc(prop
.ibc
);
2427 unblocked_ibc
= unblocked_ibc(prop
.ibc
);
2429 model
->cpu_id
= cpuid_id(prop
.cpuid
);
2430 model
->cpu_id_format
= cpuid_format(prop
.cpuid
);
2431 model
->cpu_ver
= 0xff;
2433 /* get supported cpu features indicated via STFL(E) */
2434 s390_add_from_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2435 (uint8_t *) prop
.fac_mask
);
2436 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2437 if (test_bit(S390_FEAT_STFLE
, model
->features
)) {
2438 set_bit(S390_FEAT_DAT_ENH_2
, model
->features
);
2440 /* get supported cpu features indicated e.g. via SCLP */
2441 rc
= query_cpu_feat(model
->features
);
2443 error_setg(errp
, "KVM: Error querying CPU features: %d", rc
);
2446 /* get supported cpu subfunctions indicated via query / test bit */
2447 rc
= query_cpu_subfunc(model
->features
);
2449 error_setg(errp
, "KVM: Error querying CPU subfunctions: %d", rc
);
2453 /* PTFF subfunctions might be indicated although kernel support missing */
2454 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH
, model
->features
)) {
2455 clear_bit(S390_FEAT_PTFF_QSIE
, model
->features
);
2456 clear_bit(S390_FEAT_PTFF_QTOUE
, model
->features
);
2457 clear_bit(S390_FEAT_PTFF_STOE
, model
->features
);
2458 clear_bit(S390_FEAT_PTFF_STOUE
, model
->features
);
2461 /* with cpu model support, CMM is only indicated if really available */
2462 if (kvm_s390_cmma_available()) {
2463 set_bit(S390_FEAT_CMM
, model
->features
);
2465 /* no cmm -> no cmm nt */
2466 clear_bit(S390_FEAT_CMM_NT
, model
->features
);
2469 /* bpb needs kernel support for migration, VSIE and reset */
2470 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_BPB
)) {
2471 clear_bit(S390_FEAT_BPB
, model
->features
);
2475 * If we have support for protected virtualization, indicate
2476 * the protected virtualization IPL unpack facility.
2478 if (cap_protected
) {
2479 set_bit(S390_FEAT_UNPACK
, model
->features
);
2482 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2483 set_bit(S390_FEAT_ZPCI
, model
->features
);
2484 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION
, model
->features
);
2486 if (s390_known_cpu_type(cpu_type
)) {
2487 /* we want the exact model, even if some features are missing */
2488 model
->def
= s390_find_cpu_def(cpu_type
, ibc_gen(unblocked_ibc
),
2489 ibc_ec_ga(unblocked_ibc
), NULL
);
2491 /* model unknown, e.g. too new - search using features */
2492 model
->def
= s390_find_cpu_def(0, ibc_gen(unblocked_ibc
),
2493 ibc_ec_ga(unblocked_ibc
),
2497 error_setg(errp
, "KVM: host CPU model could not be identified");
2500 /* for now, we can only provide the AP feature with HW support */
2501 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
,
2502 KVM_S390_VM_CRYPTO_ENABLE_APIE
)) {
2503 set_bit(S390_FEAT_AP
, model
->features
);
2507 * Extended-Length SCCB is handled entirely within QEMU.
2508 * For PV guests this is completely fenced by the Ultravisor, as Service
2509 * Call error checking and STFLE interpretation are handled via SIE.
2511 set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB
, model
->features
);
2513 if (kvm_check_extension(kvm_state
, KVM_CAP_S390_DIAG318
)) {
2514 set_bit(S390_FEAT_DIAG_318
, model
->features
);
2517 /* strip of features that are not part of the maximum model */
2518 bitmap_and(model
->features
, model
->features
, model
->def
->full_feat
,
2522 static void kvm_s390_configure_apie(bool interpret
)
2524 uint64_t attr
= interpret
? KVM_S390_VM_CRYPTO_ENABLE_APIE
:
2525 KVM_S390_VM_CRYPTO_DISABLE_APIE
;
2527 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
2528 kvm_s390_set_attr(attr
);
2532 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
2534 struct kvm_s390_vm_cpu_processor prop
= {
2537 struct kvm_device_attr attr
= {
2538 .group
= KVM_S390_VM_CPU_MODEL
,
2539 .attr
= KVM_S390_VM_CPU_PROCESSOR
,
2540 .addr
= (uint64_t) &prop
,
2545 /* compatibility handling if cpu models are disabled */
2546 if (kvm_s390_cmma_available()) {
2547 kvm_s390_enable_cmma();
2551 if (!kvm_s390_cpu_models_supported()) {
2552 error_setg(errp
, "KVM doesn't support CPU models");
2555 prop
.cpuid
= s390_cpuid_from_cpu_model(model
);
2556 prop
.ibc
= s390_ibc_from_cpu_model(model
);
2557 /* configure cpu features indicated via STFL(e) */
2558 s390_fill_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2559 (uint8_t *) prop
.fac_list
);
2560 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2562 error_setg(errp
, "KVM: Error configuring the CPU model: %d", rc
);
2565 /* configure cpu features indicated e.g. via SCLP */
2566 rc
= configure_cpu_feat(model
->features
);
2568 error_setg(errp
, "KVM: Error configuring CPU features: %d", rc
);
2571 /* configure cpu subfunctions indicated via query / test bit */
2572 rc
= configure_cpu_subfunc(model
->features
);
2574 error_setg(errp
, "KVM: Error configuring CPU subfunctions: %d", rc
);
2577 /* enable CMM via CMMA */
2578 if (test_bit(S390_FEAT_CMM
, model
->features
)) {
2579 kvm_s390_enable_cmma();
2582 if (test_bit(S390_FEAT_AP
, model
->features
)) {
2583 kvm_s390_configure_apie(true);
2587 void kvm_s390_restart_interrupt(S390CPU
*cpu
)
2589 struct kvm_s390_irq irq
= {
2590 .type
= KVM_S390_RESTART
,
2593 kvm_s390_vcpu_interrupt(cpu
, &irq
);
2596 void kvm_s390_stop_interrupt(S390CPU
*cpu
)
2598 struct kvm_s390_irq irq
= {
2599 .type
= KVM_S390_SIGP_STOP
,
2602 kvm_s390_vcpu_interrupt(cpu
, &irq
);