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| author | Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> | 2010-12-05 16:11:33 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 09:30:21 (GMT) |
| commit | 700e1b12196c4b01524ca10d89f8731418d72b6e (patch) | |
| tree | bf9f5aeeb8724f71f53e083267118df1b275163f /arch/x86/kvm | |
| parent | a295673aba42895997a6c1be87f467a7cfc0f332 (diff) | |
| download | linux-700e1b12196c4b01524ca10d89f8731418d72b6e.tar.xz | |
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.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index d359500..482a5c0 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); } |