linux-kernel - [PATCH 1/6] kvm/x86/svm: force new asid on vcpu migration

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Date:	Thu, 5 Mar 2009 13:12:28 +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 1/6] kvm/x86/svm: force new asid on vcpu migration

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kvm/svm.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 1821c20..0e66bca 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -180,7 +180,7 @@ static inline void kvm_write_cr2(unsigned long val)
 
 static inline void force_new_asid(struct kvm_vcpu *vcpu)
 {
-	to_svm(vcpu)->asid_generation--;
+	to_svm(vcpu)->asid_generation = 0;
 }
 
 static inline void flush_guest_tlb(struct kvm_vcpu *vcpu)
@@ -716,6 +716,7 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 		svm->vmcb->control.tsc_offset += delta;
 		vcpu->cpu = cpu;
 		kvm_migrate_timers(vcpu);
+		force_new_asid(vcpu);
 	}
 
 	for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
-- 
1.5.6.4


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