[PATCH 34/39] KVM: MMU: Flush tlbs after clearing write permission when accessing dirty log

[Avi Kivity]

From: Avi Kivity <avi@xxxxxxxxxxxx>

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

Signed-off-by: Avi Kivity <avi@xxxxxxxxxxxx>
---
 arch/x86/kvm/mmu.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 5052acd..853a288 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -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);
 }
 
-- 
1.6.0.1

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