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OpenCloudOS-Kernel
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[PATCH] KVM: MMU: Make the shadow page tables also special-case pae 

Signed-off-by: Avi Kivity <avi@qumranet.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Avi Kivity 2007-01-05 16:36:41 -08:00 committed by Linus Torvalds
parent 1b0973bd8f
commit aef3d3fe13
1 changed files with 7 additions and 4 deletions
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11
drivers/kvm/paging_tmpl.h
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@ -170,6 +170,11 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
shadow_addr = vcpu->mmu.root_hpa;
level = vcpu->mmu.shadow_root_level;
if (level == PT32E_ROOT_LEVEL) {
shadow_addr = vcpu->mmu.pae_root[(addr >> 30) & 3];
shadow_addr &= PT64_BASE_ADDR_MASK;
--level;
}
for (; ; level--) {
u32 index = SHADOW_PT_INDEX(addr, level);
@ -202,10 +207,8 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
shadow_addr = kvm_mmu_alloc_page(vcpu, shadow_ent);
if (!VALID_PAGE(shadow_addr))
return ERR_PTR(-ENOMEM);
shadow_pte = shadow_addr | PT_PRESENT_MASK;
if (vcpu->mmu.root_level > 3 || level != 3)
shadow_pte |= PT_ACCESSED_MASK
| PT_WRITABLE_MASK | PT_USER_MASK;
shadow_pte = shadow_addr | PT_PRESENT_MASK | PT_ACCESSED_MASK
| PT_WRITABLE_MASK | PT_USER_MASK;
*shadow_ent = shadow_pte;
prev_shadow_ent = shadow_ent;
}