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>

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 729e5f689097ea8ffd76d16c916e8ca56be6e399..7bdd6b1a2373e3f542b67f196c648d421833507f 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -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 */