[Xen-devel] [PATCH 2/5] x86: remove _PAGE_PSE check from get_page_from_l2e()

["Jan Beulich" <JBeulich@xxxxxxxx>]

With L2_DISALLOW_MASK containing _PAGE_PSE unconditionally as of commit
56fff3e5e9 ("x86: nuke PV superpage option and code") there's no point
anymore in separately checking for the bit.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -1106,15 +1106,10 @@ get_page_from_l2e(
         return -EINVAL;
     }
 
-    if ( !(l2e_get_flags(l2e) & _PAGE_PSE) )
-    {
-        rc = get_page_and_type_from_mfn(_mfn(mfn), PGT_l1_page_table, d, 0, 0);
-        if ( unlikely(rc == -EINVAL) && get_l2_linear_pagetable(l2e, pfn, d) )
-            rc = 0;
-        return rc;
-    }
-
-    return -EINVAL;
+    rc = get_page_and_type_from_mfn(_mfn(mfn), PGT_l1_page_table, d, 0, 0);
+    if ( unlikely(rc == -EINVAL) && get_l2_linear_pagetable(l2e, pfn, d) )
+        rc = 0;
+    return rc;
 }
 
 




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