diff options
| author | Avi Kivity <avi@redhat.com> | 2009-06-10 12:56:54 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 08:32:50 +0300 |
| commit | 439e218a6f4716da484314fc5a1f0a59b0212c01 (patch) | |
| tree | b582edacc647f74f514417525f28e5f4c7f218f0 /arch/x86/kvm/mmu.c | |
| parent | 7ffd92c53c5ebd0ad5a68ac3ca033c3a06374d19 (diff) | |
KVM: MMU: Fix is_dirty_pte()
is_dirty_pte() is used on guest ptes, not shadow ptes, so it needs to avoid
shadow_dirty_mask and use PT_DIRTY_MASK instead.
Misdetecting dirty pages could lead to unnecessarily setting the dirty bit
under EPT.
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -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 8ee67e3fb9d0..8f2cb29db2fe 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -242,7 +242,7 @@ static int is_writeble_pte(unsigned long pte) static int is_dirty_pte(unsigned long pte) { - return pte & shadow_dirty_mask; + return pte & PT_DIRTY_MASK; } static int is_rmap_pte(u64 pte) |