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target-i386: fix "info lapic" segfault on isapc 

Start QEMU with
"qemu-system-x86_64 -nographic -M isapc -serial none-monitor stdio"
and enter "info lapic" at the monitor prompt ⇒
Segmentation fault

Signed-off-by: Tejaswini Poluri <tejaswinipoluri3@gmail.com>
Message-Id: <1490685583-16987-1-git-send-email-tejaswinipoluri3@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Tejaswini Poluri 2017-03-28 12:49:43 +05:30 committed by Paolo Bonzini
parent b9afaba891
commit c7f15bc936
1 changed files with 4 additions and 0 deletions
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4
target/i386/helper.c
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@ -326,6 +326,10 @@ void x86_cpu_dump_local_apic_state(CPUState *cs, FILE *f,
{
X86CPU *cpu = X86_CPU(cs);
APICCommonState *s = APIC_COMMON(cpu->apic_state);
if (!s) {
cpu_fprintf(f, "local apic state not available\n");
return;
}
uint32_t *lvt = s->lvt;
cpu_fprintf(f, "dumping local APIC state for CPU %-2u\n\n",