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KVM: use jump label to optimize checking for HW enabled APIC in APIC_BASE MSR

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Usually all APICs are HW enabled so the check can be optimized out.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov
2012-08-05 15:58:30 +03:00
committed by Avi Kivity
parent a181dc14ed
commit c5cc421ba3
3 changed files with 30 additions and 1 deletions
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1
arch/x86/kvm/x86.c
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@@ -4903,6 +4903,7 @@ int kvm_arch_init(void *opaque)
if (cpu_has_xsave)
host_xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK);
kvm_lapic_init();
return 0;
out: