x86: move pgalloc pud and pgd operations into common place

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/mm/init_64.c

@@ -662,11 +662,6 @@ int memory_add_physaddr_to_nid(u64 start)
 EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
 #endif
 
-void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud)
-{
-	tlb_remove_page(tlb, virt_to_page(pud));
-}
-
 #endif /* CONFIG_MEMORY_HOTPLUG */
 
 static struct kcore_list kcore_mem, kcore_vmalloc, kcore_kernel,

arch/x86/mm/pgtable.c

@@ -34,6 +34,13 @@ void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
 	paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT);
 	tlb_remove_page(tlb, virt_to_page(pmd));
 }
+
+#if PAGETABLE_LEVELS > 3
+void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud)
+{
+	tlb_remove_page(tlb, virt_to_page(pud));
+}
+#endif	/* PAGETABLE_LEVELS > 3 */
 #endif	/* PAGETABLE_LEVELS > 2 */
 
 #ifdef CONFIG_X86_64

include/asm-x86/pgalloc.h

@@ -71,12 +71,36 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
 }
 
 extern void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd);
-#endif	/* PAGETABLE_LEVELS > 2 */
 
-#ifdef CONFIG_X86_32
-# include "pgalloc_32.h"
-#else
-# include "pgalloc_64.h"
-#endif
+#ifdef CONFIG_X86_PAE
+extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd);
+#else	/* !CONFIG_X86_PAE */
+static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	paravirt_alloc_pd(mm, __pa(pmd) >> PAGE_SHIFT);
+	set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd)));
+}
+#endif	/* CONFIG_X86_PAE */
+
+#if PAGETABLE_LEVELS > 3
+static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
+{
+	set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud)));
+}
+
+static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+	return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
+}
+
+static inline void pud_free(struct mm_struct *mm, pud_t *pud)
+{
+	BUG_ON((unsigned long)pud & (PAGE_SIZE-1));
+	free_page((unsigned long)pud);
+}
+
+extern void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud);
+#endif	/* PAGETABLE_LEVELS > 3 */
+#endif	/* PAGETABLE_LEVELS > 2 */
 
 #endif	/* _ASM_X86_PGALLOC_H */

include/asm-x86/pgalloc_32.h

-#ifndef _I386_PGALLOC_H
-#define _I386_PGALLOC_H
-
-#ifdef CONFIG_X86_PAE
-extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd);
-
-#endif	/* CONFIG_X86_PAE */
-
-#endif /* _I386_PGALLOC_H */

include/asm-x86/pgalloc_64.h

-#ifndef _X86_64_PGALLOC_H
-#define _X86_64_PGALLOC_H
-
-#include <asm/pda.h>
-
-static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
-{
-	set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd)));
-}
-
-static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
-{
-	set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud)));
-}
-
-static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
-{
-	return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
-}
-
-static inline void pud_free(struct mm_struct *mm, pud_t *pud)
-{
-	BUG_ON((unsigned long)pud & (PAGE_SIZE-1));
-	free_page((unsigned long)pud);
-}
-
-extern void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud);
-
-#endif /* _X86_64_PGALLOC_H */