diff options
Diffstat (limited to 'target-i386/kvm.c')
| -rw-r--r-- | target-i386/kvm.c | 593 |
1 files changed, 256 insertions, 337 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 1f12cbf19e..a13599db81 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -28,7 +28,6 @@ #include "hw/pc.h" #include "hw/apic.h" #include "ioport.h" -#include "kvm_x86.h" #ifdef CONFIG_KVM_PARA #include <linux/kvm_para.h> @@ -172,9 +171,42 @@ static int get_para_features(CPUState *env) #endif return features; } -#endif +#endif /* CONFIG_KVM_PARA */ + +typedef struct HWPoisonPage { + ram_addr_t ram_addr; + QLIST_ENTRY(HWPoisonPage) list; +} HWPoisonPage; + +static QLIST_HEAD(, HWPoisonPage) hwpoison_page_list = + QLIST_HEAD_INITIALIZER(hwpoison_page_list); + +static void kvm_unpoison_all(void *param) +{ + HWPoisonPage *page, *next_page; + + QLIST_FOREACH_SAFE(page, &hwpoison_page_list, list, next_page) { + QLIST_REMOVE(page, list); + qemu_ram_remap(page->ram_addr, TARGET_PAGE_SIZE); + qemu_free(page); + } +} #ifdef KVM_CAP_MCE +static void kvm_hwpoison_page_add(ram_addr_t ram_addr) +{ + HWPoisonPage *page; + + QLIST_FOREACH(page, &hwpoison_page_list, list) { + if (page->ram_addr == ram_addr) { + return; + } + } + page = qemu_malloc(sizeof(HWPoisonPage)); + page->ram_addr = ram_addr; + QLIST_INSERT_HEAD(&hwpoison_page_list, page, list); +} + static int kvm_get_mce_cap_supported(KVMState *s, uint64_t *mce_cap, int *max_banks) { @@ -188,117 +220,129 @@ static int kvm_get_mce_cap_supported(KVMState *s, uint64_t *mce_cap, return -ENOSYS; } -static int kvm_setup_mce(CPUState *env, uint64_t *mcg_cap) +static void kvm_mce_inject(CPUState *env, target_phys_addr_t paddr, int code) { - return kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, mcg_cap); -} + uint64_t status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN | + MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S; + uint64_t mcg_status = MCG_STATUS_MCIP; -static int kvm_set_mce(CPUState *env, struct kvm_x86_mce *m) -{ - return kvm_vcpu_ioctl(env, KVM_X86_SET_MCE, m); + if (code == BUS_MCEERR_AR) { + status |= MCI_STATUS_AR | 0x134; + mcg_status |= MCG_STATUS_EIPV; + } else { + status |= 0xc0; + mcg_status |= MCG_STATUS_RIPV; + } + cpu_x86_inject_mce(NULL, env, 9, status, mcg_status, paddr, + (MCM_ADDR_PHYS << 6) | 0xc, + cpu_x86_support_mca_broadcast(env) ? + MCE_INJECT_BROADCAST : 0); } +#endif /* KVM_CAP_MCE */ -static int kvm_get_msr(CPUState *env, struct kvm_msr_entry *msrs, int n) +static void hardware_memory_error(void) { - struct kvm_msrs *kmsrs = qemu_malloc(sizeof *kmsrs + n * sizeof *msrs); - int r; - - kmsrs->nmsrs = n; - memcpy(kmsrs->entries, msrs, n * sizeof *msrs); - r = kvm_vcpu_ioctl(env, KVM_GET_MSRS, kmsrs); - memcpy(msrs, kmsrs->entries, n * sizeof *msrs); - free(kmsrs); - return r; + fprintf(stderr, "Hardware memory error!\n"); + exit(1); } -/* FIXME: kill this and kvm_get_msr, use env->mcg_status instead */ -static int kvm_mce_in_progress(CPUState *env) +int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr) { - struct kvm_msr_entry msr_mcg_status = { - .index = MSR_MCG_STATUS, - }; - int r; +#ifdef KVM_CAP_MCE + ram_addr_t ram_addr; + target_phys_addr_t paddr; - r = kvm_get_msr(env, &msr_mcg_status, 1); - if (r == -1 || r == 0) { - fprintf(stderr, "Failed to get MCE status\n"); - return 0; + if ((env->mcg_cap & MCG_SER_P) && addr + && (code == BUS_MCEERR_AR || code == BUS_MCEERR_AO)) { + if (qemu_ram_addr_from_host(addr, &ram_addr) || + !kvm_physical_memory_addr_from_ram(env->kvm_state, ram_addr, + &paddr)) { + fprintf(stderr, "Hardware memory error for memory used by " + "QEMU itself instead of guest system!\n"); + /* Hope we are lucky for AO MCE */ + if (code == BUS_MCEERR_AO) { + return 0; + } else { + hardware_memory_error(); + } + } + kvm_hwpoison_page_add(ram_addr); + kvm_mce_inject(env, paddr, code); + } else +#endif /* KVM_CAP_MCE */ + { + if (code == BUS_MCEERR_AO) { + return 0; + } else if (code == BUS_MCEERR_AR) { + hardware_memory_error(); + } else { + return 1; + } } - return !!(msr_mcg_status.data & MCG_STATUS_MCIP); + return 0; } -struct kvm_x86_mce_data -{ - CPUState *env; - struct kvm_x86_mce *mce; - int abort_on_error; -}; - -static void kvm_do_inject_x86_mce(void *_data) +int kvm_arch_on_sigbus(int code, void *addr) { - struct kvm_x86_mce_data *data = _data; - int r; +#ifdef KVM_CAP_MCE + if ((first_cpu->mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) { + ram_addr_t ram_addr; + target_phys_addr_t paddr; - /* If there is an MCE exception being processed, ignore this SRAO MCE */ - if ((data->env->mcg_cap & MCG_SER_P) && - !(data->mce->status & MCI_STATUS_AR)) { - if (kvm_mce_in_progress(data->env)) { - return; + /* Hope we are lucky for AO MCE */ + if (qemu_ram_addr_from_host(addr, &ram_addr) || + !kvm_physical_memory_addr_from_ram(first_cpu->kvm_state, ram_addr, + &paddr)) { + fprintf(stderr, "Hardware memory error for memory used by " + "QEMU itself instead of guest system!: %p\n", addr); + return 0; } - } - - r = kvm_set_mce(data->env, data->mce); - if (r < 0) { - perror("kvm_set_mce FAILED"); - if (data->abort_on_error) { - abort(); + kvm_hwpoison_page_add(ram_addr); + kvm_mce_inject(first_cpu, paddr, code); + } else +#endif /* KVM_CAP_MCE */ + { + if (code == BUS_MCEERR_AO) { + return 0; + } else if (code == BUS_MCEERR_AR) { + hardware_memory_error(); + } else { + return 1; } } + return 0; } -static void kvm_inject_x86_mce_on(CPUState *env, struct kvm_x86_mce *mce, - int flag) +static int kvm_inject_mce_oldstyle(CPUState *env) { - struct kvm_x86_mce_data data = { - .env = env, - .mce = mce, - .abort_on_error = (flag & ABORT_ON_ERROR), - }; - - if (!env->mcg_cap) { - fprintf(stderr, "MCE support is not enabled!\n"); - return; - } - - run_on_cpu(env, kvm_do_inject_x86_mce, &data); -} +#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; -static void kvm_mce_broadcast_rest(CPUState *env); -#endif + env->exception_injected = -1; -void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, - uint64_t mcg_status, uint64_t addr, uint64_t misc, - int flag) -{ -#ifdef KVM_CAP_MCE - struct kvm_x86_mce mce = { - .bank = bank, - .status = status, - .mcg_status = mcg_status, - .addr = addr, - .misc = misc, - }; + /* + * 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); - if (flag & MCE_BROADCAST) { - kvm_mce_broadcast_rest(cenv); - } + 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]; - kvm_inject_x86_mce_on(cenv, &mce, flag); -#else - if (flag & ABORT_ON_ERROR) { - abort(); + return kvm_vcpu_ioctl(env, KVM_X86_SET_MCE, &mce); } -#endif +#endif /* KVM_CAP_MCE */ + return 0; } static void cpu_update_state(void *opaque, int running, int reason) @@ -426,20 +470,26 @@ int kvm_arch_init_vcpu(CPUState *env) && kvm_check_extension(env->kvm_state, KVM_CAP_MCE) > 0) { uint64_t mcg_cap; int banks; + int ret; - if (kvm_get_mce_cap_supported(env->kvm_state, &mcg_cap, &banks)) { - perror("kvm_get_mce_cap_supported FAILED"); - } else { - if (banks > MCE_BANKS_DEF) - banks = MCE_BANKS_DEF; - mcg_cap &= MCE_CAP_DEF; - mcg_cap |= banks; - if (kvm_setup_mce(env, &mcg_cap)) { - perror("kvm_setup_mce FAILED"); - } else { - env->mcg_cap = mcg_cap; - } + ret = kvm_get_mce_cap_supported(env->kvm_state, &mcg_cap, &banks); + if (ret < 0) { + fprintf(stderr, "kvm_get_mce_cap_supported: %s", strerror(-ret)); + return ret; + } + + if (banks > MCE_BANKS_DEF) { + banks = MCE_BANKS_DEF; } + mcg_cap &= MCE_CAP_DEF; + mcg_cap |= banks; + ret = kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, &mcg_cap); + if (ret < 0) { + fprintf(stderr, "KVM_X86_SETUP_MCE: %s", strerror(-ret)); + return ret; + } + + env->mcg_cap = mcg_cap; } #endif @@ -556,6 +606,7 @@ int kvm_arch_init(KVMState *s) fprintf(stderr, "e820_add_entry() table is full\n"); return ret; } + qemu_register_reset(kvm_unpoison_all, NULL); return 0; } @@ -810,6 +861,7 @@ static int kvm_put_msrs(CPUState *env, int level) kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs); kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp); kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_EIP, env->sysenter_eip); + kvm_msr_entry_set(&msrs[n++], MSR_PAT, env->pat); if (has_msr_star) { kvm_msr_entry_set(&msrs[n++], MSR_STAR, env->star); } @@ -855,14 +907,10 @@ static int kvm_put_msrs(CPUState *env, int level) if (env->mcg_cap) { int i; - if (level == KVM_PUT_RESET_STATE) { - kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status); - } else if (level == KVM_PUT_FULL_STATE) { - kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status); - kvm_msr_entry_set(&msrs[n++], MSR_MCG_CTL, env->mcg_ctl); - for (i = 0; i < (env->mcg_cap & 0xff) * 4; i++) { - kvm_msr_entry_set(&msrs[n++], MSR_MC0_CTL + i, env->mce_banks[i]); - } + kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status); + kvm_msr_entry_set(&msrs[n++], MSR_MCG_CTL, env->mcg_ctl); + for (i = 0; i < (env->mcg_cap & 0xff) * 4; i++) { + kvm_msr_entry_set(&msrs[n++], MSR_MC0_CTL + i, env->mce_banks[i]); } } #endif @@ -1066,6 +1114,7 @@ static int kvm_get_msrs(CPUState *env) msrs[n++].index = MSR_IA32_SYSENTER_CS; msrs[n++].index = MSR_IA32_SYSENTER_ESP; msrs[n++].index = MSR_IA32_SYSENTER_EIP; + msrs[n++].index = MSR_PAT; if (has_msr_star) { msrs[n++].index = MSR_STAR; } @@ -1121,6 +1170,9 @@ static int kvm_get_msrs(CPUState *env) case MSR_IA32_SYSENTER_EIP: env->sysenter_eip = msrs[i].data; break; + case MSR_PAT: + env->pat = msrs[i].data; + break; case MSR_STAR: env->star = msrs[i].data; break; @@ -1373,6 +1425,11 @@ 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; @@ -1509,13 +1566,38 @@ void kvm_arch_post_run(CPUState *env, struct kvm_run *run) cpu_set_apic_base(env->apic_state, run->apic_base); } -int kvm_arch_process_irqchip_events(CPUState *env) +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; } - if (env->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI)) { + if (((env->interrupt_request & CPU_INTERRUPT_HARD) && + (env->eflags & IF_MASK)) || + (env->interrupt_request & CPU_INTERRUPT_NMI)) { env->halted = 0; } if (env->interrupt_request & CPU_INTERRUPT_INIT) { @@ -1536,64 +1618,10 @@ static int kvm_handle_halt(CPUState *env) (env->eflags & IF_MASK)) && !(env->interrupt_request & CPU_INTERRUPT_NMI)) { env->halted = 1; - return 0; + return EXCP_HLT; } - return 1; -} - -static bool host_supports_vmx(void) -{ - uint32_t ecx, unused; - - host_cpuid(1, 0, &unused, &unused, &ecx, &unused); - return ecx & CPUID_EXT_VMX; -} - -#define VMX_INVALID_GUEST_STATE 0x80000021 - -int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) -{ - uint64_t code; - int ret = 0; - - switch (run->exit_reason) { - case KVM_EXIT_HLT: - DPRINTF("handle_hlt\n"); - ret = kvm_handle_halt(env); - break; - case KVM_EXIT_SET_TPR: - ret = 1; - break; - case KVM_EXIT_FAIL_ENTRY: - code = run->fail_entry.hardware_entry_failure_reason; - fprintf(stderr, "KVM: entry failed, hardware error 0x%" PRIx64 "\n", - code); - if (host_supports_vmx() && code == VMX_INVALID_GUEST_STATE) { - fprintf(stderr, - "\nIf you're runnning a guest on an Intel machine without " - "unrestricted mode\n" - "support, the failure can be most likely due to the guest " - "entering an invalid\n" - "state for Intel VT. For example, the guest maybe running " - "in big real mode\n" - "which is not supported on less recent Intel processors." - "\n\n"); - } - ret = -1; - break; - case KVM_EXIT_EXCEPTION: - fprintf(stderr, "KVM: exception %d exit (error code 0x%x)\n", - run->ex.exception, run->ex.error_code); - ret = -1; - break; - default: - fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason); - ret = -1; - break; - } - - return ret; + return 0; } #ifdef KVM_CAP_SET_GUEST_DEBUG @@ -1703,31 +1731,31 @@ void kvm_arch_remove_all_hw_breakpoints(void) static CPUWatchpoint hw_watchpoint; -int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info) +static int kvm_handle_debug(struct kvm_debug_exit_arch *arch_info) { - int handle = 0; + int ret = 0; int n; if (arch_info->exception == 1) { if (arch_info->dr6 & (1 << 14)) { if (cpu_single_env->singlestep_enabled) { - handle = 1; + ret = EXCP_DEBUG; } } else { for (n = 0; n < 4; n++) { if (arch_info->dr6 & (1 << n)) { switch ((arch_info->dr7 >> (16 + n*4)) & 0x3) { case 0x0: - handle = 1; + ret = EXCP_DEBUG; break; case 0x1: - handle = 1; + ret = EXCP_DEBUG; cpu_single_env->watchpoint_hit = &hw_watchpoint; hw_watchpoint.vaddr = hw_breakpoint[n].addr; hw_watchpoint.flags = BP_MEM_WRITE; break; case 0x3: - handle = 1; + ret = EXCP_DEBUG; cpu_single_env->watchpoint_hit = &hw_watchpoint; hw_watchpoint.vaddr = hw_breakpoint[n].addr; hw_watchpoint.flags = BP_MEM_ACCESS; @@ -1737,17 +1765,18 @@ int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info) } } } else if (kvm_find_sw_breakpoint(cpu_single_env, arch_info->pc)) { - handle = 1; + ret = EXCP_DEBUG; } - if (!handle) { + if (ret == 0) { cpu_synchronize_state(cpu_single_env); assert(cpu_single_env->exception_injected == -1); + /* pass to guest */ cpu_single_env->exception_injected = arch_info->exception; cpu_single_env->has_error_code = 0; } - return handle; + return ret; } void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg) @@ -1778,178 +1807,68 @@ void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg) } #endif /* KVM_CAP_SET_GUEST_DEBUG */ -bool kvm_arch_stop_on_emulation_error(CPUState *env) -{ - return !(env->cr[0] & CR0_PE_MASK) || - ((env->segs[R_CS].selector & 3) != 3); -} - -static void hardware_memory_error(void) -{ - fprintf(stderr, "Hardware memory error!\n"); - exit(1); -} - -#ifdef KVM_CAP_MCE -static void kvm_mce_broadcast_rest(CPUState *env) -{ - struct kvm_x86_mce mce = { - .bank = 1, - .status = MCI_STATUS_VAL | MCI_STATUS_UC, - .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV, - .addr = 0, - .misc = 0, - }; - CPUState *cenv; - - /* Broadcast MCA signal for processor version 06H_EH and above */ - if (cpu_x86_support_mca_broadcast(env)) { - for (cenv = first_cpu; cenv != NULL; cenv = cenv->next_cpu) { - if (cenv == env) { - continue; - } - kvm_inject_x86_mce_on(cenv, &mce, ABORT_ON_ERROR); - } - } -} - -static void kvm_mce_inj_srar_dataload(CPUState *env, target_phys_addr_t paddr) -{ - struct kvm_x86_mce mce = { - .bank = 9, - .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN - | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S - | MCI_STATUS_AR | 0x134, - .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_EIPV, - .addr = paddr, - .misc = (MCM_ADDR_PHYS << 6) | 0xc, - }; - int r; - - r = kvm_set_mce(env, &mce); - if (r < 0) { - fprintf(stderr, "kvm_set_mce: %s\n", strerror(errno)); - abort(); - } - kvm_mce_broadcast_rest(env); -} - -static void kvm_mce_inj_srao_memscrub(CPUState *env, target_phys_addr_t paddr) -{ - struct kvm_x86_mce mce = { - .bank = 9, - .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN - | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S - | 0xc0, - .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV, - .addr = paddr, - .misc = (MCM_ADDR_PHYS << 6) | 0xc, - }; - int r; - - r = kvm_set_mce(env, &mce); - if (r < 0) { - fprintf(stderr, "kvm_set_mce: %s\n", strerror(errno)); - abort(); - } - kvm_mce_broadcast_rest(env); -} - -static void kvm_mce_inj_srao_memscrub2(CPUState *env, target_phys_addr_t paddr) +static bool host_supports_vmx(void) { - struct kvm_x86_mce mce = { - .bank = 9, - .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN - | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S - | 0xc0, - .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV, - .addr = paddr, - .misc = (MCM_ADDR_PHYS << 6) | 0xc, - }; + uint32_t ecx, unused; - kvm_inject_x86_mce_on(env, &mce, ABORT_ON_ERROR); - kvm_mce_broadcast_rest(env); + host_cpuid(1, 0, &unused, &unused, &ecx, &unused); + return ecx & CPUID_EXT_VMX; } -#endif +#define VMX_INVALID_GUEST_STATE 0x80000021 -int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr) +int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) { -#if defined(KVM_CAP_MCE) - void *vaddr; - ram_addr_t ram_addr; - target_phys_addr_t paddr; - - if ((env->mcg_cap & MCG_SER_P) && addr - && (code == BUS_MCEERR_AR - || code == BUS_MCEERR_AO)) { - vaddr = (void *)addr; - if (qemu_ram_addr_from_host(vaddr, &ram_addr) || - !kvm_physical_memory_addr_from_ram(env->kvm_state, ram_addr, &paddr)) { - fprintf(stderr, "Hardware memory error for memory used by " - "QEMU itself instead of guest system!\n"); - /* Hope we are lucky for AO MCE */ - if (code == BUS_MCEERR_AO) { - return 0; - } else { - hardware_memory_error(); - } - } + uint64_t code; + int ret; - if (code == BUS_MCEERR_AR) { - /* Fake an Intel architectural Data Load SRAR UCR */ - kvm_mce_inj_srar_dataload(env, paddr); - } else { - /* - * If there is an MCE excpetion being processed, ignore - * this SRAO MCE - */ - if (!kvm_mce_in_progress(env)) { - /* Fake an Intel architectural Memory scrubbing UCR */ - kvm_mce_inj_srao_memscrub(env, paddr); - } - } - } else -#endif - { - if (code == BUS_MCEERR_AO) { - return 0; - } else if (code == BUS_MCEERR_AR) { - hardware_memory_error(); - } else { - return 1; + switch (run->exit_reason) { + case KVM_EXIT_HLT: + DPRINTF("handle_hlt\n"); + ret = kvm_handle_halt(env); + break; + case KVM_EXIT_SET_TPR: + ret = 0; + break; + case KVM_EXIT_FAIL_ENTRY: + code = run->fail_entry.hardware_entry_failure_reason; + fprintf(stderr, "KVM: entry failed, hardware error 0x%" PRIx64 "\n", + code); + if (host_supports_vmx() && code == VMX_INVALID_GUEST_STATE) { + fprintf(stderr, + "\nIf you're runnning a guest on an Intel machine without " + "unrestricted mode\n" + "support, the failure can be most likely due to the guest " + "entering an invalid\n" + "state for Intel VT. For example, the guest maybe running " + "in big real mode\n" + "which is not supported on less recent Intel processors." + "\n\n"); } + ret = -1; + break; + case KVM_EXIT_EXCEPTION: + fprintf(stderr, "KVM: exception %d exit (error code 0x%x)\n", + run->ex.exception, run->ex.error_code); + ret = -1; + break; +#ifdef KVM_CAP_SET_GUEST_DEBUG + case KVM_EXIT_DEBUG: + DPRINTF("kvm_exit_debug\n"); + ret = kvm_handle_debug(&run->debug.arch); + break; +#endif /* KVM_CAP_SET_GUEST_DEBUG */ + default: + fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason); + ret = -1; + break; } - return 0; + + return ret; } -int kvm_arch_on_sigbus(int code, void *addr) +bool kvm_arch_stop_on_emulation_error(CPUState *env) { -#if defined(KVM_CAP_MCE) - if ((first_cpu->mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) { - void *vaddr; - ram_addr_t ram_addr; - target_phys_addr_t paddr; - - /* Hope we are lucky for AO MCE */ - vaddr = addr; - if (qemu_ram_addr_from_host(vaddr, &ram_addr) || - !kvm_physical_memory_addr_from_ram(first_cpu->kvm_state, ram_addr, &paddr)) { - fprintf(stderr, "Hardware memory error for memory used by " - "QEMU itself instead of guest system!: %p\n", addr); - return 0; - } - kvm_mce_inj_srao_memscrub2(first_cpu, paddr); - } else -#endif - { - if (code == BUS_MCEERR_AO) { - return 0; - } else if (code == BUS_MCEERR_AR) { - hardware_memory_error(); - } else { - return 1; - } - } - return 0; + return !(env->cr[0] & CR0_PE_MASK) || + ((env->segs[R_CS].selector & 3) != 3); } |