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List:       kvm
Subject:    [PATCH v1 07/11] KVM: VMX: optimize APIC ID read with APICv
From:       Radim Krčmář <rkrcmar () redhat ! com>
Date:       2016-06-30 20:54:25
Message-ID: 20160630205429.16480-8-rkrcmar () redhat ! com
[Download RAW message or body]

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

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
---
 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

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