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| author | Avi Kivity <avi@qumranet.com> | 2007-05-31 18:20:14 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 12:05:44 +0300 |
| commit | fd97dc516c372982f9c3637e20b131e1f55ac2f6 (patch) | |
| tree | 40c86e7691de599286daeebaa942d0392e54e1dd /drivers/kvm/paging_tmpl.h | |
| parent | 4436d466219a6a7874ebc19eb6523c3a9a280dcc (diff) | |
| download | op-kernel-dev-fd97dc516c372982f9c3637e20b131e1f55ac2f6.zip op-kernel-dev-fd97dc516c372982f9c3637e20b131e1f55ac2f6.tar.gz | |
KVM: MMU: Simpify accessed/dirty/present/nx bit handling
Always set the accessed and dirty bit (since having them cleared causes
a read-modify-write cycle), always set the present bit, and copy the
nx bit from the guest.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/paging_tmpl.h')
| -rw-r--r-- | drivers/kvm/paging_tmpl.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h index 59b4cb2..b17a4b7 100644 --- a/drivers/kvm/paging_tmpl.h +++ b/drivers/kvm/paging_tmpl.h @@ -31,7 +31,6 @@ #define PT_INDEX(addr, level) PT64_INDEX(addr, level) #define SHADOW_PT_INDEX(addr, level) PT64_INDEX(addr, level) #define PT_LEVEL_MASK(level) PT64_LEVEL_MASK(level) - #define PT_PTE_COPY_MASK PT64_PTE_COPY_MASK #ifdef CONFIG_X86_64 #define PT_MAX_FULL_LEVELS 4 #else @@ -46,7 +45,6 @@ #define PT_INDEX(addr, level) PT32_INDEX(addr, level) #define SHADOW_PT_INDEX(addr, level) PT64_INDEX(addr, level) #define PT_LEVEL_MASK(level) PT32_LEVEL_MASK(level) - #define PT_PTE_COPY_MASK PT32_PTE_COPY_MASK #define PT_MAX_FULL_LEVELS 2 #else #error Invalid PTTYPE value @@ -219,7 +217,8 @@ static void FNAME(set_pte_common)(struct kvm_vcpu *vcpu, FNAME(mark_pagetable_dirty)(vcpu->kvm, walker); } - spte |= *gpte & PT_PTE_COPY_MASK; + 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; @@ -495,7 +494,5 @@ static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t vaddr) #undef PT_INDEX #undef SHADOW_PT_INDEX #undef PT_LEVEL_MASK -#undef PT_PTE_COPY_MASK -#undef PT_NON_PTE_COPY_MASK #undef PT_DIR_BASE_ADDR_MASK #undef PT_MAX_FULL_LEVELS |
