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authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2010-06-30 16:04:06 +0800
committerGreg Kroah-Hartman <gregkh@suse.de>2010-08-10 10:54:14 -0700
commite11e4f058c98a984fd23e0f04c27a74e684b754b (patch)
tree5accf5cbc55d2d1fbc4ae0735b6a641bee9a491c /arch
parentc2ef74cb9b66b740e0499404d736273a7fe2c64c (diff)
KVM: MMU: flush remote tlbs when overwriting spte with different pfn
(cherry picked from commit 91546356d0e550fa23abf7f4b04a903c2855761f) After remove a rmap, we should flush all vcpu's tlb Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/mmu.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index dd3df44b8614..ca850d4b0997 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1901,6 +1901,8 @@ 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;
}