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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-06-30 16:04:06 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-10 10:54:14 -0700 |
| commit | e11e4f058c98a984fd23e0f04c27a74e684b754b (patch) | |
| tree | 5accf5cbc55d2d1fbc4ae0735b6a641bee9a491c | |
| parent | c2ef74cb9b66b740e0499404d736273a7fe2c64c (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>
| -rw-r--r-- | 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 dd3df44b861..ca850d4b099 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; } |