[PATCH v1 07/11] KVM: VMX: optimize APIC ID read with APICv

From: Radim KrÄmÃÅ
Date: Thu Jun 30 2016 - 16:57:05 EST


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

Signed-off-by: Radim KrÄmÃÅ <rkrcmar@xxxxxxxxxx>
---
v1: new, split from the previous patch

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 85e2f0a882ca..a10038258b80 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6447,9 +6447,6 @@ 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