Commit 91546356 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Marcelo Tosatti
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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: default avatarXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent da38f438

arch/x86/kvm/mmu.c

+2 −0
Original line number Diff line number Diff line
@@ -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;

	}