linux-kernel - [PATCH 5/5] KVM: SVM: Ignore lower 12 bit of nested msrpm

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Message-ID: <1267118149-15737-6-git-send-email-joerg.roedel@amd.com>
Date:	Thu, 25 Feb 2010 18:15:49 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>
CC:	Alexander Graf <agraf@...e.de>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 5/5] KVM: SVM: Ignore lower 12 bit of nested msrpm_pa

These bits are ignored by the hardware. Implement this
for nested svm too.

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kvm/svm.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 3859e2c..cfc8a90 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2012,7 +2012,7 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)
 	svm->vmcb->save.dr6 = nested_vmcb->save.dr6;
 	svm->vmcb->save.cpl = nested_vmcb->save.cpl;
 
-	svm->nested.vmcb_msrpm = nested_vmcb->control.msrpm_base_pa;
+	svm->nested.vmcb_msrpm = nested_vmcb->control.msrpm_base_pa & ~0x0fffULL;
 	svm->nested.vmcb_iopm  = nested_vmcb->control.iopm_base_pa  & ~0x0fffULL;
 
 	/* cache intercepts */
-- 
1.7.0


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