aboutsummaryrefslogtreecommitdiff
path: root/target-s390x/kvm.c
diff options
context:
space:
mode:
Diffstat (limited to 'target-s390x/kvm.c')
-rw-r--r--target-s390x/kvm.c248
1 files changed, 169 insertions, 79 deletions
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 47008c24f2..6ec5e6d8a6 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -25,11 +25,11 @@
#include <asm/ptrace.h>
#include "qemu-common.h"
-#include "qemu-timer.h"
-#include "sysemu.h"
-#include "kvm.h"
+#include "qemu/timer.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/kvm.h"
#include "cpu.h"
-#include "device_tree.h"
+#include "sysemu/device_tree.h"
/* #define DEBUG_KVM */
@@ -60,77 +60,150 @@
#define SIGP_STORE_STATUS_ADDR 0x0e
#define SIGP_SET_ARCH 0x12
-#define SCLP_CMDW_READ_SCP_INFO 0x00020001
-#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
-
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_LAST_INFO
};
+static int cap_sync_regs;
+
int kvm_arch_init(KVMState *s)
{
+ cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
return 0;
}
-int kvm_arch_init_vcpu(CPUS390XState *env)
+int kvm_arch_init_vcpu(CPUState *cpu)
{
int ret = 0;
- if (kvm_vcpu_ioctl(env, KVM_S390_INITIAL_RESET, NULL) < 0) {
+ if (kvm_vcpu_ioctl(cpu, KVM_S390_INITIAL_RESET, NULL) < 0) {
perror("cannot init reset vcpu");
}
return ret;
}
-void kvm_arch_reset_vcpu(CPUS390XState *env)
+void kvm_arch_reset_vcpu(CPUState *cpu)
{
/* FIXME: add code to reset vcpu. */
}
-int kvm_arch_put_registers(CPUS390XState *env, int level)
+int kvm_arch_put_registers(CPUState *cs, int level)
{
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
+ struct kvm_sregs sregs;
struct kvm_regs regs;
int ret;
int i;
- ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, &regs);
- if (ret < 0) {
- return ret;
- }
+ /* always save the PSW and the GPRS*/
+ cs->kvm_run->psw_addr = env->psw.addr;
+ cs->kvm_run->psw_mask = env->psw.mask;
- for (i = 0; i < 16; i++) {
- regs.gprs[i] = env->regs[i];
+ if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) {
+ for (i = 0; i < 16; i++) {
+ cs->kvm_run->s.regs.gprs[i] = env->regs[i];
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
+ }
+ } else {
+ for (i = 0; i < 16; i++) {
+ regs.gprs[i] = env->regs[i];
+ }
+ ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs);
+ if (ret < 0) {
+ return ret;
+ }
}
- ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, &regs);
- if (ret < 0) {
- return ret;
+ /* Do we need to save more than that? */
+ if (level == KVM_PUT_RUNTIME_STATE) {
+ return 0;
}
- env->kvm_run->psw_addr = env->psw.addr;
- env->kvm_run->psw_mask = env->psw.mask;
+ if (cap_sync_regs &&
+ cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
+ cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
+ for (i = 0; i < 16; i++) {
+ cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
+ cs->kvm_run->s.regs.crs[i] = env->cregs[i];
+ }
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
+ } else {
+ for (i = 0; i < 16; i++) {
+ sregs.acrs[i] = env->aregs[i];
+ sregs.crs[i] = env->cregs[i];
+ }
+ ret = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
+ if (ret < 0) {
+ return ret;
+ }
+ }
- return ret;
+ /* Finally the prefix */
+ if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
+ cs->kvm_run->s.regs.prefix = env->psa;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
+ } else {
+ /* prefix is only supported via sync regs */
+ }
+ return 0;
}
-int kvm_arch_get_registers(CPUS390XState *env)
+int kvm_arch_get_registers(CPUState *cs)
{
- int ret;
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
+ struct kvm_sregs sregs;
struct kvm_regs regs;
+ int ret;
int i;
- ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, &regs);
- if (ret < 0) {
- return ret;
+ /* get the PSW */
+ env->psw.addr = cs->kvm_run->psw_addr;
+ env->psw.mask = cs->kvm_run->psw_mask;
+
+ /* the GPRS */
+ if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) {
+ for (i = 0; i < 16; i++) {
+ env->regs[i] = cs->kvm_run->s.regs.gprs[i];
+ }
+ } else {
+ ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
+ if (ret < 0) {
+ return ret;
+ }
+ for (i = 0; i < 16; i++) {
+ env->regs[i] = regs.gprs[i];
+ }
}
- for (i = 0; i < 16; i++) {
- env->regs[i] = regs.gprs[i];
+ /* The ACRS and CRS */
+ if (cap_sync_regs &&
+ cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
+ cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
+ for (i = 0; i < 16; i++) {
+ env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
+ env->cregs[i] = cs->kvm_run->s.regs.crs[i];
+ }
+ } else {
+ ret = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
+ if (ret < 0) {
+ return ret;
+ }
+ for (i = 0; i < 16; i++) {
+ env->aregs[i] = sregs.acrs[i];
+ env->cregs[i] = sregs.crs[i];
+ }
}
- env->psw.addr = env->kvm_run->psw_addr;
- env->psw.mask = env->kvm_run->psw_mask;
+ /* Finally the prefix */
+ if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
+ env->psa = cs->kvm_run->s.regs.prefix;
+ } else {
+ /* no prefix without sync regs */
+ }
return 0;
}
@@ -170,8 +243,10 @@ void *kvm_arch_vmalloc(ram_addr_t size)
}
}
-int kvm_arch_insert_sw_breakpoint(CPUS390XState *env, struct kvm_sw_breakpoint *bp)
+int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
{
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 4, 0) ||
@@ -181,8 +256,10 @@ int kvm_arch_insert_sw_breakpoint(CPUS390XState *env, struct kvm_sw_breakpoint *
return 0;
}
-int kvm_arch_remove_sw_breakpoint(CPUS390XState *env, struct kvm_sw_breakpoint *bp)
+int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
{
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
uint8_t t[4];
static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
@@ -197,26 +274,28 @@ int kvm_arch_remove_sw_breakpoint(CPUS390XState *env, struct kvm_sw_breakpoint *
return 0;
}
-void kvm_arch_pre_run(CPUS390XState *env, struct kvm_run *run)
+void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
{
}
-void kvm_arch_post_run(CPUS390XState *env, struct kvm_run *run)
+void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run)
{
}
-int kvm_arch_process_async_events(CPUS390XState *env)
+int kvm_arch_process_async_events(CPUState *cs)
{
- return env->halted;
+ S390CPU *cpu = S390_CPU(cs);
+ return cpu->env.halted;
}
-void kvm_s390_interrupt_internal(CPUS390XState *env, int type, uint32_t parm,
+void kvm_s390_interrupt_internal(S390CPU *cpu, int type, uint32_t parm,
uint64_t parm64, int vm)
{
+ CPUState *cs = CPU(cpu);
struct kvm_s390_interrupt kvmint;
int r;
- if (!env->kvm_state) {
+ if (!cs->kvm_state) {
return;
}
@@ -225,9 +304,9 @@ void kvm_s390_interrupt_internal(CPUS390XState *env, int type, uint32_t parm,
kvmint.parm64 = parm64;
if (vm) {
- r = kvm_vm_ioctl(env->kvm_state, KVM_S390_INTERRUPT, &kvmint);
+ r = kvm_vm_ioctl(cs->kvm_state, KVM_S390_INTERRUPT, &kvmint);
} else {
- r = kvm_vcpu_ioctl(env, KVM_S390_INTERRUPT, &kvmint);
+ r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
}
if (r < 0) {
@@ -236,34 +315,38 @@ void kvm_s390_interrupt_internal(CPUS390XState *env, int type, uint32_t parm,
}
}
-void kvm_s390_virtio_irq(CPUS390XState *env, int config_change, uint64_t token)
+void kvm_s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token)
{
- kvm_s390_interrupt_internal(env, KVM_S390_INT_VIRTIO, config_change,
+ kvm_s390_interrupt_internal(cpu, KVM_S390_INT_VIRTIO, config_change,
token, 1);
}
-void kvm_s390_interrupt(CPUS390XState *env, int type, uint32_t code)
+void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code)
{
- kvm_s390_interrupt_internal(env, type, code, 0, 0);
+ kvm_s390_interrupt_internal(cpu, type, code, 0, 0);
}
-static void enter_pgmcheck(CPUS390XState *env, uint16_t code)
+static void enter_pgmcheck(S390CPU *cpu, uint16_t code)
{
- kvm_s390_interrupt(env, KVM_S390_PROGRAM_INT, code);
+ kvm_s390_interrupt(cpu, KVM_S390_PROGRAM_INT, code);
}
-static inline void setcc(CPUS390XState *env, uint64_t cc)
+static inline void setcc(S390CPU *cpu, uint64_t cc)
{
- env->kvm_run->psw_mask &= ~(3ull << 44);
- env->kvm_run->psw_mask |= (cc & 3) << 44;
+ CPUS390XState *env = &cpu->env;
+ CPUState *cs = CPU(cpu);
+
+ cs->kvm_run->psw_mask &= ~(3ull << 44);
+ cs->kvm_run->psw_mask |= (cc & 3) << 44;
env->psw.mask &= ~(3ul << 44);
env->psw.mask |= (cc & 3) << 44;
}
-static int kvm_sclp_service_call(CPUS390XState *env, struct kvm_run *run,
+static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
uint16_t ipbh0)
{
+ CPUS390XState *env = &cpu->env;
uint32_t sccb;
uint64_t code;
int r = 0;
@@ -272,15 +355,16 @@ static int kvm_sclp_service_call(CPUS390XState *env, struct kvm_run *run,
sccb = env->regs[ipbh0 & 0xf];
code = env->regs[(ipbh0 & 0xf0) >> 4];
- r = sclp_service_call(env, sccb, code);
- if (r) {
- setcc(env, 3);
+ r = sclp_service_call(sccb, code);
+ if (r < 0) {
+ enter_pgmcheck(cpu, -r);
}
+ setcc(cpu, r);
return 0;
}
-static int handle_priv(CPUS390XState *env, struct kvm_run *run, uint8_t ipa1)
+static int handle_priv(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
int r = 0;
uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
@@ -288,7 +372,7 @@ static int handle_priv(CPUS390XState *env, struct kvm_run *run, uint8_t ipa1)
dprintf("KVM: PRIV: %d\n", ipa1);
switch (ipa1) {
case PRIV_SCLP_CALL:
- r = kvm_sclp_service_call(env, run, ipbh0);
+ r = kvm_sclp_service_call(cpu, run, ipbh0);
break;
default:
dprintf("KVM: unknown PRIV: 0x%x\n", ipa1);
@@ -331,9 +415,9 @@ static int s390_cpu_restart(S390CPU *cpu)
{
CPUS390XState *env = &cpu->env;
- kvm_s390_interrupt(env, KVM_S390_RESTART, 0);
+ kvm_s390_interrupt(cpu, KVM_S390_RESTART, 0);
s390_add_running_cpu(env);
- qemu_cpu_kick(env);
+ qemu_cpu_kick(CPU(cpu));
dprintf("DONE: SIGP cpu restart: %p\n", env);
return 0;
}
@@ -345,12 +429,13 @@ static int s390_store_status(CPUS390XState *env, uint32_t parameter)
return -1;
}
-static int s390_cpu_initial_reset(CPUS390XState *env)
+static int s390_cpu_initial_reset(S390CPU *cpu)
{
+ CPUS390XState *env = &cpu->env;
int i;
s390_del_running_cpu(env);
- if (kvm_vcpu_ioctl(env, KVM_S390_INITIAL_RESET, NULL) < 0) {
+ if (kvm_vcpu_ioctl(CPU(cpu), KVM_S390_INITIAL_RESET, NULL) < 0) {
perror("cannot init reset vcpu");
}
@@ -364,8 +449,9 @@ static int s390_cpu_initial_reset(CPUS390XState *env)
return 0;
}
-static int handle_sigp(CPUS390XState *env, struct kvm_run *run, uint8_t ipa1)
+static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
+ CPUS390XState *env = &cpu->env;
uint8_t order_code;
uint32_t parameter;
uint16_t cpu_addr;
@@ -409,7 +495,7 @@ static int handle_sigp(CPUS390XState *env, struct kvm_run *run, uint8_t ipa1)
/* make the caller panic */
return -1;
case SIGP_INITIAL_CPU_RESET:
- r = s390_cpu_initial_reset(target_env);
+ r = s390_cpu_initial_reset(target_cpu);
break;
default:
fprintf(stderr, "KVM: unknown SIGP: 0x%x\n", order_code);
@@ -417,12 +503,13 @@ static int handle_sigp(CPUS390XState *env, struct kvm_run *run, uint8_t ipa1)
}
out:
- setcc(env, r ? 3 : 0);
+ setcc(cpu, r ? 3 : 0);
return 0;
}
-static int handle_instruction(CPUS390XState *env, struct kvm_run *run)
+static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
{
+ CPUS390XState *env = &cpu->env;
unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
int ipb_code = (run->s390_sieic.ipb & 0x0fff0000) >> 16;
@@ -431,43 +518,45 @@ static int handle_instruction(CPUS390XState *env, struct kvm_run *run)
dprintf("handle_instruction 0x%x 0x%x\n", run->s390_sieic.ipa, run->s390_sieic.ipb);
switch (ipa0) {
case IPA0_PRIV:
- r = handle_priv(env, run, ipa1);
+ r = handle_priv(cpu, run, ipa1);
break;
case IPA0_DIAG:
r = handle_diag(env, run, ipb_code);
break;
case IPA0_SIGP:
- r = handle_sigp(env, run, ipa1);
+ r = handle_sigp(cpu, run, ipa1);
break;
}
if (r < 0) {
- enter_pgmcheck(env, 0x0001);
+ enter_pgmcheck(cpu, 0x0001);
}
return 0;
}
-static bool is_special_wait_psw(CPUS390XState *env)
+static bool is_special_wait_psw(CPUState *cs)
{
/* signal quiesce */
- return env->kvm_run->psw_addr == 0xfffUL;
+ return cs->kvm_run->psw_addr == 0xfffUL;
}
-static int handle_intercept(CPUS390XState *env)
+static int handle_intercept(S390CPU *cpu)
{
- struct kvm_run *run = env->kvm_run;
+ CPUS390XState *env = &cpu->env;
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
int icpt_code = run->s390_sieic.icptcode;
int r = 0;
dprintf("intercept: 0x%x (at 0x%lx)\n", icpt_code,
- (long)env->kvm_run->psw_addr);
+ (long)cs->kvm_run->psw_addr);
switch (icpt_code) {
case ICPT_INSTRUCTION:
- r = handle_instruction(env, run);
+ r = handle_instruction(cpu, run);
break;
case ICPT_WAITPSW:
if (s390_del_running_cpu(env) == 0 &&
- is_special_wait_psw(env)) {
+ is_special_wait_psw(cs)) {
qemu_system_shutdown_request();
}
r = EXCP_HALTED;
@@ -495,13 +584,14 @@ static int handle_intercept(CPUS390XState *env)
return r;
}
-int kvm_arch_handle_exit(CPUS390XState *env, struct kvm_run *run)
+int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
{
+ S390CPU *cpu = S390_CPU(cs);
int ret = 0;
switch (run->exit_reason) {
case KVM_EXIT_S390_SIEIC:
- ret = handle_intercept(env);
+ ret = handle_intercept(cpu);
break;
case KVM_EXIT_S390_RESET:
qemu_system_reset_request();
@@ -517,12 +607,12 @@ int kvm_arch_handle_exit(CPUS390XState *env, struct kvm_run *run)
return ret;
}
-bool kvm_arch_stop_on_emulation_error(CPUS390XState *env)
+bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
{
return true;
}
-int kvm_arch_on_sigbus_vcpu(CPUS390XState *env, int code, void *addr)
+int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
{
return 1;
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-12 10:00:31 +0000