linux-kernel - [PATCH 3/6] KVM: AMD SVM: Add missing tlb flushes to the guest mmu

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Message-Id: <20061128124149.5F5D825015E@cleopatra.q>
Date:	Tue, 28 Nov 2006 12:41:49 -0000
From:	Avi Kivity <avi@...ranet.com>
To:	kvm-devel@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org,
	yaniv.kamay@...ranet.com, mingo@...e.hu
Subject: [PATCH 3/6] KVM: AMD SVM: Add missing tlb flushes to the guest mmu

Add a couple of missing mmu flushes.  The Intel tlb is too coarse to be
affected, but they are necessary for AMD.

Signed-off-by: Yaniv Kamay <yaniv@...ranet.com>
Signed-off-by: Avi Kivity <avi@...ranet.com>

Index: linux-2.6/drivers/kvm/mmu.c
===================================================================
--- linux-2.6.orig/drivers/kvm/mmu.c
+++ linux-2.6/drivers/kvm/mmu.c
@@ -324,6 +324,7 @@ static void nonpaging_flush(struct kvm_v
 	if (is_paging(vcpu))
 		root |= (vcpu->cr3 & (CR3_PCD_MASK | CR3_WPT_MASK));
 	kvm_arch_ops->set_cr3(vcpu, root);
+	kvm_arch_ops->flush_tlb(vcpu);
 }
 
 static gpa_t nonpaging_gva_to_gpa(struct kvm_vcpu *vcpu, gva_t vaddr)
@@ -407,6 +408,7 @@ static void kvm_mmu_flush_tlb(struct kvm
 		release_pt_page_64(vcpu, page->page_hpa, 1);
 	}
 	++kvm_stat.tlb_flush;
+	kvm_arch_ops->flush_tlb(vcpu);
 }
 
 static void paging_new_cr3(struct kvm_vcpu *vcpu)
-
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