KVM: MMU: update 'root_hpa' out of loop in PAE shadow path

The value of 'vcpu->arch.mmu.pae_root' is not modified, so we can update
'root_hpa' out of the loop.

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index c94c43289f53..363004699012 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2393,8 +2393,8 @@ static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu)
                         ++sp->root_count;
                         spin_unlock(&vcpu->kvm->mmu_lock);
                         vcpu->arch.mmu.pae_root[i] = root | PT_PRESENT_MASK;
-                        vcpu->arch.mmu.root_hpa = __pa(vcpu->arch.mmu.pae_root);
                 }
+                vcpu->arch.mmu.root_hpa = __pa(vcpu->arch.mmu.pae_root);
         } else
                 BUG();
 
@@ -2466,8 +2466,8 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
                 spin_unlock(&vcpu->kvm->mmu_lock);
 
                 vcpu->arch.mmu.pae_root[i] = root | pm_mask;
-                vcpu->arch.mmu.root_hpa = __pa(vcpu->arch.mmu.pae_root);
         }
+        vcpu->arch.mmu.root_hpa = __pa(vcpu->arch.mmu.pae_root);
 
         /*
          * If we shadow a 32 bit page table with a long mode page