diff options
Diffstat (limited to 'target-i386/helper.c')
| -rw-r--r-- | target-i386/helper.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index 82e1ff114c..ce5346c317 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -1496,8 +1496,77 @@ static void breakpoint_handler(CPUState *env) if (prev_debug_excp_handler) prev_debug_excp_handler(env); } + +/* This should come from sysemu.h - if we could include it here... */ +void qemu_system_reset_request(void); + +void cpu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, + uint64_t mcg_status, uint64_t addr, uint64_t misc) +{ + uint64_t mcg_cap = cenv->mcg_cap; + unsigned bank_num = mcg_cap & 0xff; + uint64_t *banks = cenv->mce_banks; + + if (bank >= bank_num || !(status & MCI_STATUS_VAL)) + return; + + /* + * if MSR_MCG_CTL is not all 1s, the uncorrected error + * reporting is disabled + */ + if ((status & MCI_STATUS_UC) && (mcg_cap & MCG_CTL_P) && + cenv->mcg_ctl != ~(uint64_t)0) + return; + banks += 4 * bank; + /* + * if MSR_MCi_CTL is not all 1s, the uncorrected error + * reporting is disabled for the bank + */ + if ((status & MCI_STATUS_UC) && banks[0] != ~(uint64_t)0) + return; + if (status & MCI_STATUS_UC) { + if ((cenv->mcg_status & MCG_STATUS_MCIP) || + !(cenv->cr[4] & CR4_MCE_MASK)) { + fprintf(stderr, "injects mce exception while previous " + "one is in progress!\n"); + qemu_log_mask(CPU_LOG_RESET, "Triple fault\n"); + qemu_system_reset_request(); + return; + } + if (banks[1] & MCI_STATUS_VAL) + status |= MCI_STATUS_OVER; + banks[2] = addr; + banks[3] = misc; + cenv->mcg_status = mcg_status; + banks[1] = status; + cpu_interrupt(cenv, CPU_INTERRUPT_MCE); + } else if (!(banks[1] & MCI_STATUS_VAL) + || !(banks[1] & MCI_STATUS_UC)) { + if (banks[1] & MCI_STATUS_VAL) + status |= MCI_STATUS_OVER; + banks[2] = addr; + banks[3] = misc; + banks[1] = status; + } else + banks[1] |= MCI_STATUS_OVER; +} #endif /* !CONFIG_USER_ONLY */ +static void mce_init(CPUX86State *cenv) +{ + unsigned int bank, bank_num; + + if (((cenv->cpuid_version >> 8)&0xf) >= 6 + && (cenv->cpuid_features&(CPUID_MCE|CPUID_MCA)) == (CPUID_MCE|CPUID_MCA)) { + cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF; + cenv->mcg_ctl = ~(uint64_t)0; + bank_num = cenv->mcg_cap & 0xff; + cenv->mce_banks = qemu_mallocz(bank_num * sizeof(uint64_t) * 4); + for (bank = 0; bank < bank_num; bank++) + cenv->mce_banks[bank*4] = ~(uint64_t)0; + } +} + static void host_cpuid(uint32_t function, uint32_t count, uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx) @@ -1735,6 +1804,7 @@ CPUX86State *cpu_x86_init(const char *cpu_model) cpu_x86_close(env); return NULL; } + mce_init(env); cpu_reset(env); #ifdef CONFIG_KQEMU kqemu_init(env); |