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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-06-30 08:04:06 (GMT) |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-07-12 17:05:56 (GMT) |
| commit | 91546356d0e550fa23abf7f4b04a903c2855761f (patch) | |
| tree | ce2e9304bac3b125a1e3fca09db7dca2a2de883f | |
| parent | da38f43859467a8048365b9e1cce99ccbc62b6e2 (diff) | |
| download | linux-91546356d0e550fa23abf7f4b04a903c2855761f.tar.xz | |
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.c | 2 |
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; } |