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>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 69d40a6e1e68fa39d6b4dcfe0a014690fbbba6a4..d3cd102aee262e5405c3a1ec3bd8b1b3f053eac5 100644 (file)
--- 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;