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| author | Avi Kivity <avi@qumranet.com> | 2007-05-31 18:24:09 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 12:05:44 +0300 |
| commit | b64b3763a5b3868e85330c891e1a30189dcde9b1 (patch) | |
| tree | 906df8e5b7b43b0b2ef19a4ab57eeaee40f9d21a /drivers/kvm/paging_tmpl.h | |
| parent | fd97dc516c372982f9c3637e20b131e1f55ac2f6 (diff) | |
| download | talos-op-linux-b64b3763a5b3868e85330c891e1a30189dcde9b1.tar.gz talos-op-linux-b64b3763a5b3868e85330c891e1a30189dcde9b1.zip | |
KVM: MMU: Don't cache guest access bits in the shadow page table
This was once used to avoid accessing the guest pte when upgrading
the shadow pte from read-only to read-write. But usually we need
to set the guest pte dirty or accessed bits anyway, so this wasn't
really exploited.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/paging_tmpl.h')
| -rw-r--r-- | drivers/kvm/paging_tmpl.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h index b17a4b783cd4..adc1206cf659 100644 --- a/drivers/kvm/paging_tmpl.h +++ b/drivers/kvm/paging_tmpl.h @@ -219,7 +219,6 @@ static void FNAME(set_pte_common)(struct kvm_vcpu *vcpu, spte |= PT_PRESENT_MASK | PT_ACCESSED_MASK | PT_DIRTY_MASK; spte |= *gpte & PT64_NX_MASK; - spte |= access_bits << PT_SHADOW_BITS_OFFSET; if (!dirty) access_bits &= ~PT_WRITABLE_MASK; |
