haraldwolff/qemu-patch-raspberry4
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target-i386: seperate MCIP & MCE_MASK error reason

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Previously we would only get a simple string "Triple fault" in qemu
log. Add detailed message for the two reasons to describe why qemu
has to reset the guest.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20200930100440.1060708-2-pizhenwei@bytedance.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
zhenwei pi 2020-09-30 18:04:38 +08:00 committed by Paolo Bonzini
parent deb62371fe
commit 9f89f303de
1 changed files with 18 additions and 7 deletions
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25
target/i386/helper.c
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@ -857,6 +857,8 @@ static void do_inject_x86_mce(CPUState *cs, run_on_cpu_data data)
X86CPU *cpu = X86_CPU(cs);
CPUX86State *cenv = &cpu->env;
uint64_t *banks = cenv->mce_banks + 4 * params->bank;
g_autofree char *msg = NULL;
bool need_reset = false;
cpu_synchronize_state(cs);
@ -894,16 +896,25 @@ static void do_inject_x86_mce(CPUState *cs, run_on_cpu_data data)
return;
}
if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
!(cenv->cr[4] & CR4_MCE_MASK)) {
monitor_printf(params->mon,
"CPU %d: Previous MCE still in progress, raising"
" triple fault\n",
cs->cpu_index);
qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
if (cenv->mcg_status & MCG_STATUS_MCIP) {
need_reset = true;
msg = g_strdup_printf("CPU %d: Previous MCE still in progress, "
"raising triple fault", cs->cpu_index);
}
if (!(cenv->cr[4] & CR4_MCE_MASK)) {
need_reset = true;
msg = g_strdup_printf("CPU %d: MCE capability is not enabled, "
"raising triple fault", cs->cpu_index);
}
if (need_reset) {
monitor_printf(params->mon, "%s", msg);
qemu_log_mask(CPU_LOG_RESET, "%s\n", msg);
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
return;
}
if (banks[1] & MCI_STATUS_VAL) {
params->status |= MCI_STATUS_OVER;
}