diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-05-31 17:20:14 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 11:05:44 +0200 |
| commit | fd97dc516c372982f9c3637e20b131e1f55ac2f6 (patch) | |
| tree | 40c86e7691de599286daeebaa942d0392e54e1dd /drivers | |
| parent | KVM: MMU: Remove cr0.wp tricks (diff) | |
| download | linux-fd97dc516c372982f9c3637e20b131e1f55ac2f6.tar.xz linux-fd97dc516c372982f9c3637e20b131e1f55ac2f6.zip | |
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')
| -rw-r--r-- | drivers/kvm/mmu.c | 5 | ||||
| -rw-r--r-- | drivers/kvm/paging_tmpl.h | 7 |
2 files changed, 2 insertions, 10 deletions
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index f24b540148aa..b47391ffe549 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -91,11 +91,6 @@ static int dbg = 1; #define PT32_DIR_PSE36_MASK (((1ULL << PT32_DIR_PSE36_SIZE) - 1) << PT32_DIR_PSE36_SHIFT) -#define PT32_PTE_COPY_MASK \ - (PT_PRESENT_MASK | PT_ACCESSED_MASK | PT_DIRTY_MASK | PT_GLOBAL_MASK) - -#define PT64_PTE_COPY_MASK (PT64_NX_MASK | PT32_PTE_COPY_MASK) - #define PT_FIRST_AVAIL_BITS_SHIFT 9 #define PT64_SECOND_AVAIL_BITS_SHIFT 52 diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h index 59b4cb29e0f7..b17a4b783cd4 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 |