diff options
Diffstat (limited to 'target-s390x')
| -rw-r--r-- | target-s390x/kvm.c | 153 |
1 files changed, 91 insertions, 62 deletions
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index 3f7e9adfe1..8918986bc2 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -1111,110 +1111,139 @@ static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb) return r; } -static void sigp_cpu_start(void *arg) +typedef struct SigpInfo { + S390CPU *cpu; + int cc; + uint64_t *status_reg; +} SigpInfo; + +static void sigp_start(void *arg) { - CPUState *cs = arg; - S390CPU *cpu = S390_CPU(cs); + SigpInfo *si = arg; - s390_cpu_set_state(CPU_STATE_OPERATING, cpu); - DPRINTF("DONE: KVM cpu start: %p\n", &cpu->env); + s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu); + si->cc = SIGP_CC_ORDER_CODE_ACCEPTED; + DPRINTF("DONE: KVM cpu start: %p\n", &si->cpu->env); } -static void sigp_cpu_restart(void *arg) +static void sigp_restart(void *arg) { - CPUState *cs = arg; - S390CPU *cpu = S390_CPU(cs); + SigpInfo *si = arg; struct kvm_s390_irq irq = { .type = KVM_S390_RESTART, }; - kvm_s390_vcpu_interrupt(cpu, &irq); - s390_cpu_set_state(CPU_STATE_OPERATING, cpu); + kvm_s390_vcpu_interrupt(si->cpu, &irq); + s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu); + si->cc = SIGP_CC_ORDER_CODE_ACCEPTED; } int kvm_s390_cpu_restart(S390CPU *cpu) { - run_on_cpu(CPU(cpu), sigp_cpu_restart, CPU(cpu)); + SigpInfo si = { + .cpu = cpu, + }; + + run_on_cpu(CPU(cpu), sigp_restart, &si); DPRINTF("DONE: KVM cpu restart: %p\n", &cpu->env); return 0; } static void sigp_initial_cpu_reset(void *arg) { - CPUState *cpu = arg; - S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); + SigpInfo *si = arg; + CPUState *cs = CPU(si->cpu); + S390CPUClass *scc = S390_CPU_GET_CLASS(si->cpu); - cpu_synchronize_state(cpu); - scc->initial_cpu_reset(cpu); - cpu_synchronize_post_reset(cpu); + cpu_synchronize_state(cs); + scc->initial_cpu_reset(cs); + cpu_synchronize_post_reset(cs); + si->cc = SIGP_CC_ORDER_CODE_ACCEPTED; } static void sigp_cpu_reset(void *arg) { - CPUState *cpu = arg; - S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); + SigpInfo *si = arg; + CPUState *cs = CPU(si->cpu); + S390CPUClass *scc = S390_CPU_GET_CLASS(si->cpu); - cpu_synchronize_state(cpu); - scc->cpu_reset(cpu); - cpu_synchronize_post_reset(cpu); + cpu_synchronize_state(cs); + scc->cpu_reset(cs); + cpu_synchronize_post_reset(cs); + si->cc = SIGP_CC_ORDER_CODE_ACCEPTED; } -#define SIGP_ORDER_MASK 0x000000ff - -static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) +static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order, + uint64_t *status_reg) { - CPUS390XState *env = &cpu->env; - uint8_t order_code; - uint16_t cpu_addr; - S390CPU *target_cpu; - uint64_t *statusreg = &env->regs[ipa1 >> 4]; - int cc; - - cpu_synchronize_state(CPU(cpu)); - - /* get order code */ - order_code = decode_basedisp_rs(env, run->s390_sieic.ipb) & SIGP_ORDER_MASK; + SigpInfo si = { + .cpu = dst_cpu, + .status_reg = status_reg, + }; - cpu_addr = env->regs[ipa1 & 0x0f]; - target_cpu = s390_cpu_addr2state(cpu_addr); - if (target_cpu == NULL) { - cc = SIGP_CC_NOT_OPERATIONAL; - goto out; + /* cpu available? */ + if (dst_cpu == NULL) { + return SIGP_CC_NOT_OPERATIONAL; } - switch (order_code) { + switch (order) { case SIGP_START: - run_on_cpu(CPU(target_cpu), sigp_cpu_start, CPU(target_cpu)); - cc = SIGP_CC_ORDER_CODE_ACCEPTED; + run_on_cpu(CPU(dst_cpu), sigp_start, &si); break; case SIGP_RESTART: - run_on_cpu(CPU(target_cpu), sigp_cpu_restart, CPU(target_cpu)); - cc = SIGP_CC_ORDER_CODE_ACCEPTED; - break; - case SIGP_SET_ARCH: - *statusreg &= 0xffffffff00000000UL; - *statusreg |= SIGP_STAT_INVALID_PARAMETER; - cc = SIGP_CC_STATUS_STORED; - break; + run_on_cpu(CPU(dst_cpu), sigp_restart, &si); case SIGP_INITIAL_CPU_RESET: - run_on_cpu(CPU(target_cpu), sigp_initial_cpu_reset, CPU(target_cpu)); - cc = SIGP_CC_ORDER_CODE_ACCEPTED; + run_on_cpu(CPU(dst_cpu), sigp_initial_cpu_reset, &si); break; case SIGP_CPU_RESET: - run_on_cpu(CPU(target_cpu), sigp_cpu_reset, CPU(target_cpu)); - cc = SIGP_CC_ORDER_CODE_ACCEPTED; + run_on_cpu(CPU(dst_cpu), sigp_cpu_reset, &si); break; default: - DPRINTF("KVM: unknown SIGP: 0x%x\n", order_code); - *statusreg &= 0xffffffff00000000UL; - *statusreg |= SIGP_STAT_INVALID_ORDER; - cc = SIGP_CC_STATUS_STORED; + DPRINTF("KVM: unknown SIGP: 0x%x\n", order); + *status_reg &= 0xffffffff00000000ULL; + *status_reg |= SIGP_STAT_INVALID_ORDER; + si.cc = SIGP_CC_STATUS_STORED; + } + + return si.cc; +} + +#define SIGP_ORDER_MASK 0x000000ff + +static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) +{ + CPUS390XState *env = &cpu->env; + const uint8_t r1 = ipa1 >> 4; + const uint8_t r3 = ipa1 & 0x0f; + int ret; + uint8_t order; + uint64_t *status_reg; + S390CPU *dst_cpu = NULL; + + cpu_synchronize_state(CPU(cpu)); + + /* get order code */ + order = decode_basedisp_rs(env, run->s390_sieic.ipb) & SIGP_ORDER_MASK; + status_reg = &env->regs[r1]; + + switch (order) { + case SIGP_SET_ARCH: + *status_reg &= 0xffffffff00000000ULL; + *status_reg |= SIGP_STAT_INVALID_PARAMETER; + ret = SIGP_CC_STATUS_STORED; break; + default: + /* all other sigp orders target a single vcpu */ + dst_cpu = s390_cpu_addr2state(env->regs[r3]); + ret = handle_sigp_single_dst(dst_cpu, order, status_reg); } -out: - setcc(cpu, cc); - return 0; + if (ret >= 0) { + setcc(cpu, ret); + return 0; + } + + return ret; } static int handle_instruction(S390CPU *cpu, struct kvm_run *run) |