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KVM: MMU: Don't calculate quadrant if tdp_enabled 

There's no need to calculate quadrant if tdp is enabled.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Gui Jianfeng 2010-05-31 17:11:39 +08:00 committed by Avi Kivity
parent 316b95216e
commit b66d80006e
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/mmu.c
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@ -1378,7 +1378,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
if (role.direct) if (role.direct)
role.cr4_pae = 0; role.cr4_pae = 0;
role.access = access; role.access = access;
if (vcpu->arch.mmu.root_level <= PT32_ROOT_LEVEL) { if (!tdp_enabled && vcpu->arch.mmu.root_level <= PT32_ROOT_LEVEL) {
quadrant = gaddr >> (PAGE_SHIFT + (PT64_PT_BITS * level)); quadrant = gaddr >> (PAGE_SHIFT + (PT64_PT_BITS * level));
quadrant &= (1 << ((PT32_PT_BITS - PT64_PT_BITS) * level)) - 1; quadrant &= (1 << ((PT32_PT_BITS - PT64_PT_BITS) * level)) - 1;
role.quadrant = quadrant; role.quadrant = quadrant;