[PATCH v3 08/14] KVM: VMX: optimize APIC ID read with APICv

From: Radim KrÄmÃÅ
Date: Tue Jul 12 2016 - 16:12:39 EST


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

Reviewed-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Radim KrÄmÃÅ <rkrcmar@xxxxxxxxxx>
---
arch/x86/kvm/vmx.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index e51503063181..24b505fda7ad 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6456,9 +6456,6 @@ 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 */
--
2.9.0