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authorTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>2010-12-06 01:11:33 +0900
committerAvi Kivity <avi@redhat.com>2011-01-12 11:30:21 +0200
commit700e1b12196c4b01524ca10d89f8731418d72b6e (patch)
treebf9f5aeeb8724f71f53e083267118df1b275163f /arch/x86/kvm
parenta295673aba42895997a6c1be87f467a7cfc0f332 (diff)
KVM: MMU: Avoid dropping accessed bit while removing write access
One more "KVM: MMU: Don't drop accessed bit while updating an spte." Sptes are accessed by both kvm and hardware. This patch uses update_spte() to fix the way of removing write access. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/mmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index d35950087e3..482a5c0c48d 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3447,7 +3447,7 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
for (i = 0; i < PT64_ENT_PER_PAGE; ++i)
/* avoid RMW */
if (is_writable_pte(pt[i]))
- pt[i] &= ~PT_WRITABLE_MASK;
+ update_spte(&pt[i], pt[i] & ~PT_WRITABLE_MASK);
}
kvm_flush_remote_tlbs(kvm);
}