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authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2010-06-30 16:04:06 +0800
committerMarcelo Tosatti <mtosatti@redhat.com>2010-07-12 14:05:56 -0300
commit91546356d0e550fa23abf7f4b04a903c2855761f (patch)
treece2e9304bac3b125a1e3fca09db7dca2a2de883f
parentda38f43859467a8048365b9e1cce99ccbc62b6e2 (diff)
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KVM: MMU: flush remote tlbs when overwriting spte with different pfn
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>
-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 a6f695d..3699613 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1879,6 +1879,8 @@ 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;
}