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authorAvi Kivity <avi@qumranet.com>2008-08-27 16:40:51 +0300
committerAvi Kivity <avi@qumranet.com>2008-10-15 10:15:24 +0200
commit171d595d3b3254b9a952af8d1f6965d2e85dcbaa (patch)
tree87e4197b72ff28e04adb72a157c483d6e571a0be
parent2245a28fe2e6fdb1bdabc4dcde1ea3a5c37e2a9e (diff)
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: Avi Kivity <avi@qumranet.com>
-rw-r--r--arch/x86/kvm/mmu.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 5052acdc0a7..853a2889b20 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);
}