All lcd tests through 5 are passing.

Added pgd_pfn to asm/pgtables.h.

arch/x86/include/asm/pgtable.h

@@ -168,6 +168,11 @@ static inline unsigned long pud_pfn(pud_t pud)
 	return (pud_val(pud) & pud_pfn_mask(pud)) >> PAGE_SHIFT;
 }
 
+static inline unsigned long pgd_pfn(pgd_t pgd)
+{
+	return (pgd_val(pgd) & PTE_PFN_MASK) >> PAGE_SHIFT;
+}
+
 #define pte_page(pte)	pfn_to_page(pte_pfn(pte))
 
 static inline int pmd_large(pmd_t pte)

virt/lcd-domains/lcd-tests.c

@@ -219,7 +219,7 @@ static int test05(void)
 	 * gpa 0x1234000UL.
 	 */
 	pmd = (pmd_t *)__va(hpa);
-	set_pmd(pmd + 4, 0x1234000UL);
+	set_pmd(pmd + 4, __pmd(0x1234000UL));
 
 	/*
 	 * Set up pud entry for look up, and find pmd