diff options
| author | Avi Kivity <avi@redhat.com> | 2012-09-12 21:46:56 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-09-20 14:00:09 +0400 |
| commit | 6fd01b711bee96ce3356f7b6f370ab708e37504b (patch) | |
| tree | c277c3daf5ba0ec856e582025cbc27ccab4e6ec9 /arch/x86/kvm/mmu.h | |
| parent | 13d22b6aebb000aeaf137862c6c0e0c4d138d798 (diff) | |
| download | linux-6fd01b711bee96ce3356f7b6f370ab708e37504b.tar.xz | |
KVM: MMU: Optimize is_last_gpte()
Instead of branchy code depending on level, gpte.ps, and mmu configuration,
prepare everything in a bitmap during mode changes and look it up during
runtime.
Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.h')
| -rw-r--r-- | arch/x86/kvm/mmu.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index 584660775d08..69871080e866 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -20,7 +20,8 @@ #define PT_ACCESSED_MASK (1ULL << PT_ACCESSED_SHIFT) #define PT_DIRTY_SHIFT 6 #define PT_DIRTY_MASK (1ULL << PT_DIRTY_SHIFT) -#define PT_PAGE_SIZE_MASK (1ULL << 7) +#define PT_PAGE_SIZE_SHIFT 7 +#define PT_PAGE_SIZE_MASK (1ULL << PT_PAGE_SIZE_SHIFT) #define PT_PAT_MASK (1ULL << 7) #define PT_GLOBAL_MASK (1ULL << 8) #define PT64_NX_SHIFT 63 |