linux-kernel - [PATCH v3 4/11] KVM: MMU: fix forgot to flush all vcpu's tlb

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Message-ID: <4C2AFA76.8030702@cn.fujitsu.com>
Date:	Wed, 30 Jun 2010 16:04:06 +0800
From:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>
To:	Avi Kivity <avi@...hat.com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	KVM list <kvm@...r.kernel.org>
Subject: [PATCH v3 4/11] KVM: MMU: fix forgot to flush all vcpu's tlb

After remove a rmap, we should flush all vcpu's tlb

Signed-off-by: Xiao Guangrong <xiaoguangrong@...fujitsu.com>
---
 arch/x86/kvm/mmu.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 24290f8..a0c5c31 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1941,6 +1941,8 @@ static void mmu_set_spte(struct kvm_vcpu *vcpu, u64 *sptep,
 			pgprintk("hfn old %lx new %lx\n",
 				 spte_to_pfn(*sptep), pfn);
 			rmap_remove(vcpu->kvm, sptep);
+			__set_spte(sptep, shadow_trap_nonpresent_pte);
+			kvm_flush_remote_tlbs(vcpu->kvm);
 		} else
 			was_rmapped = 1;
 	}
-- 
1.6.1.2


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