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KVM: VMX: optimize APIC ID read with APICv 

The register is in hardware-compatible format now, so there is not need
to intercept.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Radim Krčmář 2016-07-12 22:09:24 +02:00 committed by Paolo Bonzini
parent 49bd29ba1d
commit c93de59dcd
1 changed files with 0 additions and 3 deletions
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arch/x86/kvm/vmx.c
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@ -6461,9 +6461,6 @@ static __init int hardware_setup(void)
for (msr = 0x800; msr <= 0x8ff; msr++)
vmx_disable_intercept_msr_read_x2apic(msr);
/* According SDM, in x2apic mode, the whole id reg is used. But in
* KVM, it only use the highest eight bits. Need to intercept it */
vmx_enable_intercept_msr_read_x2apic(0x802);
/* TMCCT */
vmx_enable_intercept_msr_read_x2apic(0x839);
/* TPR */