Commit 171d595d authored by Avi Kivity's avatar Avi Kivity
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KVM: MMU: Flush tlbs after clearing write permission when accessing dirty log 



Otherwise, the cpu may allow writes to the tracked pages, and we lose
some display bits or fail to migrate correctly.

Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 2245a28f

arch/x86/kvm/mmu.c

+1 −0
Original line number Diff line number Diff line
@@ -2111,6 +2111,7 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot) 
			if (pt[i] & PT_WRITABLE_MASK)

				pt[i] &= ~PT_WRITABLE_MASK;

	}

	kvm_flush_remote_tlbs(kvm);

	spin_unlock(&kvm->mmu_lock);

}