[COMMIT master] KVM: MMU: Don't calculate quadrant if tdp_enabled

[Avi Kivity]

From: Gui Jianfeng <guijianf...@cn.fujitsu.com>

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

Signed-off-by: Gui Jianfeng <guijianf...@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index c16c4ca..0e35106 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1378,7 +1378,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct 
kvm_vcpu *vcpu,
        if (role.direct)
                role.cr4_pae = 0;
        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 &= (1 << ((PT32_PT_BITS - PT64_PT_BITS) * level)) - 1;
                role.quadrant = quadrant;
--
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