linux-kernel - [PATCH 06/12] KVM: SVM: Add clean-bit for NPT state

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Date:	Fri, 3 Dec 2010 11:45:53 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>
CC:	<kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 06/12] KVM: SVM: Add clean-bit for NPT state

This patch implements the clean-bit for all nested paging
related state in the vmcb.

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kvm/svm.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index b81d31a..3b5d894 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -191,6 +191,7 @@ enum {
 	VMCB_PERM_MAP,   /* IOPM Base and MSRPM Base */
 	VMCB_ASID,	 /* ASID */
 	VMCB_INTR,	 /* int_ctl, int_vector */
+	VMCB_NPT,        /* npt_en, nCR3, gPAT */
 	VMCB_DIRTY_MAX,
 };
 
@@ -1749,6 +1750,7 @@ static void nested_svm_set_tdp_cr3(struct kvm_vcpu *vcpu,
 	struct vcpu_svm *svm = to_svm(vcpu);
 
 	svm->vmcb->control.nested_cr3 = root;
+	mark_dirty(svm->vmcb, VMCB_NPT);
 	force_new_asid(vcpu);
 }
 
@@ -3552,6 +3554,7 @@ static void set_tdp_cr3(struct kvm_vcpu *vcpu, unsigned long root)
 	struct vcpu_svm *svm = to_svm(vcpu);
 
 	svm->vmcb->control.nested_cr3 = root;
+	mark_dirty(svm->vmcb, VMCB_NPT);
 
 	/* Also sync guest cr3 here in case we live migrate */
 	svm->vmcb->save.cr3 = vcpu->arch.cr3;
-- 
1.7.1


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