KVM: MMU: Merge shadow level check in FNAME(fetch)

Remove the redundant level check when fetching
shadow pte for present & non-present spte.

Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 2 insertions, 5 deletions

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 349920556be3..03ba8608fe0f 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -300,16 +300,13 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
                 bool new_page = 0;
 
                 shadow_ent = ((u64 *)__va(shadow_addr)) + index;
+                if (level == PT_PAGE_TABLE_LEVEL)
+                        break;
                 if (is_shadow_present_pte(*shadow_ent)) {
-                        if (level == PT_PAGE_TABLE_LEVEL)
-                                break;
                         shadow_addr = *shadow_ent & PT64_BASE_ADDR_MASK;
                         continue;
                 }
 
-                if (level == PT_PAGE_TABLE_LEVEL)
-                        break;
-
                 if (level - 1 == PT_PAGE_TABLE_LEVEL
                     && walker->level == PT_DIRECTORY_LEVEL) {
                         metaphysical = 1;