x86: move pmd functions into common asm/pgalloc.h

[pandora-kernel.git] / include / asm-x86 / pgalloc.h

diff --git a/include/asm-x86/pgalloc.h b/include/asm-x86/pgalloc.h
index 0d15e21..ae23839 100644 (file)
--- a/include/asm-x86/pgalloc.h
+++ b/include/asm-x86/pgalloc.h
@@ -40,6 +40,39 @@ static inline void pte_free(struct mm_struct *mm, struct page *pte)
 
 extern void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte);
 
+static inline void pmd_populate_kernel(struct mm_struct *mm,
+                                      pmd_t *pmd, pte_t *pte)
+{
+       paravirt_alloc_pt(mm, __pa(pte) >> PAGE_SHIFT);
+       set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE));
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+                               struct page *pte)
+{
+       unsigned long pfn = page_to_pfn(pte);
+
+       paravirt_alloc_pt(mm, pfn);
+       set_pmd(pmd, __pmd(((pteval_t)pfn << PAGE_SHIFT) | _PAGE_TABLE));
+}
+
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+#if PAGETABLE_LEVELS > 2
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+       return (pmd_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
+}
+
+static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+       BUG_ON((unsigned long)pmd & (PAGE_SIZE-1));
+       free_page((unsigned long)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