HVM-575 KVM: MMU: flush remote tlbs when overwriting spte with different pfn

1 files changed, 2 insertions, 0 deletions

diff --git a/kvm_mmu.c b/kvm_mmu.c
index 82236a9..df965ce 100644
--- a/kvm_mmu.c
+++ b/kvm_mmu.c
@@ -1752,6 +1752,8 @@ mmu_set_spte(struct kvm_vcpu *vcpu, uint64_t *sptep, unsigned pt_access,
 			kvm_flush_remote_tlbs(vcpu->kvm);
 		} else if (pfn != spte_to_pfn(*sptep)) {
 			rmap_remove(vcpu->kvm, sptep);
+			__set_spte(sptep, shadow_trap_nonpresent_pte);
+			kvm_flush_remote_tlbs(vcpu->kvm);
 		} else
 			was_rmapped = 1;
 	}