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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/mmu.c | |
| parent | fd97dc516c372982f9c3637e20b131e1f55ac2f6 (diff) | |
| download | op-kernel-dev-b64b3763a5b3868e85330c891e1a30189dcde9b1.zip op-kernel-dev-b64b3763a5b3868e85330c891e1a30189dcde9b1.tar.gz | |
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/mmu.c')
| -rw-r--r-- | drivers/kvm/mmu.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index b47391f..986d012 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -97,14 +97,6 @@ static int dbg = 1; #define PT_SHADOW_PS_MARK (1ULL << PT_FIRST_AVAIL_BITS_SHIFT) #define PT_SHADOW_IO_MARK (1ULL << PT_FIRST_AVAIL_BITS_SHIFT) -#define PT_SHADOW_WRITABLE_SHIFT (PT_FIRST_AVAIL_BITS_SHIFT + 1) -#define PT_SHADOW_WRITABLE_MASK (1ULL << PT_SHADOW_WRITABLE_SHIFT) - -#define PT_SHADOW_USER_SHIFT (PT_SHADOW_WRITABLE_SHIFT + 1) -#define PT_SHADOW_USER_MASK (1ULL << (PT_SHADOW_USER_SHIFT)) - -#define PT_SHADOW_BITS_OFFSET (PT_SHADOW_WRITABLE_SHIFT - PT_WRITABLE_SHIFT) - #define VALID_PAGE(x) ((x) != INVALID_PAGE) #define PT64_LEVEL_BITS 9 |
