diff options
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/kvm.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 0aef810418..d9a6fc501b 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -467,6 +467,38 @@ void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, #endif /* !KVM_CAP_MCE*/ } +static int kvm_inject_mce_oldstyle(CPUState *env) +{ +#ifdef KVM_CAP_MCE + if (!kvm_has_vcpu_events() && env->exception_injected == EXCP12_MCHK) { + unsigned int bank, bank_num = env->mcg_cap & 0xff; + struct kvm_x86_mce mce; + + env->exception_injected = -1; + + /* + * There must be at least one bank in use if an MCE is pending. + * Find it and use its values for the event injection. + */ + for (bank = 0; bank < bank_num; bank++) { + if (env->mce_banks[bank * 4 + 1] & MCI_STATUS_VAL) { + break; + } + } + assert(bank < bank_num); + + mce.bank = bank; + mce.status = env->mce_banks[bank * 4 + 1]; + mce.mcg_status = env->mcg_status; + mce.addr = env->mce_banks[bank * 4 + 2]; + mce.misc = env->mce_banks[bank * 4 + 3]; + + return kvm_vcpu_ioctl(env, KVM_X86_SET_MCE, &mce); + } +#endif /* KVM_CAP_MCE */ + return 0; +} + static void cpu_update_state(void *opaque, int running, int reason) { CPUState *env = opaque; @@ -1539,6 +1571,11 @@ int kvm_arch_put_registers(CPUState *env, int level) if (ret < 0) { return ret; } + /* must be before kvm_put_msrs */ + ret = kvm_inject_mce_oldstyle(env); + if (ret < 0) { + return ret; + } ret = kvm_put_msrs(env, level); if (ret < 0) { return ret; @@ -1677,6 +1714,29 @@ void kvm_arch_post_run(CPUState *env, struct kvm_run *run) int kvm_arch_process_async_events(CPUState *env) { + if (env->interrupt_request & CPU_INTERRUPT_MCE) { + /* We must not raise CPU_INTERRUPT_MCE if it's not supported. */ + assert(env->mcg_cap); + + env->interrupt_request &= ~CPU_INTERRUPT_MCE; + + kvm_cpu_synchronize_state(env); + + if (env->exception_injected == EXCP08_DBLE) { + /* this means triple fault */ + qemu_system_reset_request(); + env->exit_request = 1; + return 0; + } + env->exception_injected = EXCP12_MCHK; + env->has_error_code = 0; + + env->halted = 0; + if (kvm_irqchip_in_kernel() && env->mp_state == KVM_MP_STATE_HALTED) { + env->mp_state = KVM_MP_STATE_RUNNABLE; + } + } + if (kvm_irqchip_in_kernel()) { return 0; } |