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| author | Avi Kivity <avi@qumranet.com> | 2007-05-31 10:45:18 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 11:05:43 +0200 |
| commit | 6598c8b2420c30b48fc0d1d40d9ef6a1f7312107 (patch) | |
| tree | 737442b8f7b19da8eff72c738a384e030b1c6a4a /drivers/kvm | |
| parent | KVM: MMU: Move set_pte_common() to pte width dependent code (diff) | |
| download | linux-6598c8b2420c30b48fc0d1d40d9ef6a1f7312107.tar.xz linux-6598c8b2420c30b48fc0d1d40d9ef6a1f7312107.zip | |
KVM: MMU: Pass the guest pde to set_pte_common
We will need the accessed bit (in addition to the dirty bit) and
also write access (for setting the dirty bit) in a future patch.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm')
| -rw-r--r-- | drivers/kvm/paging_tmpl.h | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h index 65763007f04d..7e998d193849 100644 --- a/drivers/kvm/paging_tmpl.h +++ b/drivers/kvm/paging_tmpl.h @@ -195,11 +195,12 @@ static void FNAME(mark_pagetable_dirty)(struct kvm *kvm, static void FNAME(set_pte_common)(struct kvm_vcpu *vcpu, u64 *shadow_pte, gpa_t gaddr, - int dirty, + pt_element_t *gpte, u64 access_bits, gfn_t gfn) { hpa_t paddr; + int dirty = *gpte & PT_DIRTY_MASK; *shadow_pte |= access_bits << PT_SHADOW_BITS_OFFSET; if (!dirty) @@ -240,14 +241,14 @@ static void FNAME(set_pte_common)(struct kvm_vcpu *vcpu, rmap_add(vcpu, shadow_pte); } -static void FNAME(set_pte)(struct kvm_vcpu *vcpu, u64 guest_pte, +static void FNAME(set_pte)(struct kvm_vcpu *vcpu, pt_element_t *gpte, u64 *shadow_pte, u64 access_bits, gfn_t gfn) { ASSERT(*shadow_pte == 0); - access_bits &= guest_pte; - *shadow_pte = (guest_pte & PT_PTE_COPY_MASK); - FNAME(set_pte_common)(vcpu, shadow_pte, guest_pte & PT_BASE_ADDR_MASK, - guest_pte & PT_DIRTY_MASK, access_bits, gfn); + access_bits &= *gpte; + *shadow_pte = (*gpte & PT_PTE_COPY_MASK); + FNAME(set_pte_common)(vcpu, shadow_pte, *gpte & PT_BASE_ADDR_MASK, + gpte, access_bits, gfn); } static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *page, @@ -261,24 +262,24 @@ static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *page, if (~gpte & (PT_PRESENT_MASK | PT_ACCESSED_MASK)) return; pgprintk("%s: gpte %llx spte %p\n", __FUNCTION__, (u64)gpte, spte); - FNAME(set_pte)(vcpu, gpte, spte, PT_USER_MASK | PT_WRITABLE_MASK, + FNAME(set_pte)(vcpu, &gpte, spte, PT_USER_MASK | PT_WRITABLE_MASK, (gpte & PT_BASE_ADDR_MASK) >> PAGE_SHIFT); } -static void FNAME(set_pde)(struct kvm_vcpu *vcpu, u64 guest_pde, +static void FNAME(set_pde)(struct kvm_vcpu *vcpu, pt_element_t *gpde, u64 *shadow_pte, u64 access_bits, gfn_t gfn) { gpa_t gaddr; ASSERT(*shadow_pte == 0); - access_bits &= guest_pde; + access_bits &= *gpde; gaddr = (gpa_t)gfn << PAGE_SHIFT; if (PTTYPE == 32 && is_cpuid_PSE36()) - gaddr |= (guest_pde & PT32_DIR_PSE36_MASK) << + gaddr |= (*gpde & PT32_DIR_PSE36_MASK) << (32 - PT32_DIR_PSE36_SHIFT); - *shadow_pte = guest_pde & PT_PTE_COPY_MASK; + *shadow_pte = *gpde & PT_PTE_COPY_MASK; FNAME(set_pte_common)(vcpu, shadow_pte, gaddr, - guest_pde & PT_DIRTY_MASK, access_bits, gfn); + gpde, access_bits, gfn); } /* @@ -349,11 +350,11 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, if (walker->level == PT_DIRECTORY_LEVEL) { if (prev_shadow_ent) *prev_shadow_ent |= PT_SHADOW_PS_MARK; - FNAME(set_pde)(vcpu, *guest_ent, shadow_ent, + FNAME(set_pde)(vcpu, guest_ent, shadow_ent, walker->inherited_ar, walker->gfn); } else { ASSERT(walker->level == PT_PAGE_TABLE_LEVEL); - FNAME(set_pte)(vcpu, *guest_ent, shadow_ent, + FNAME(set_pte)(vcpu, guest_ent, shadow_ent, walker->inherited_ar, walker->gfn); } |