vserver 1.9.5.x5

[linux-2.6.git] / include / asm-um / pgalloc.h

diff --git a/include/asm-um/pgalloc.h b/include/asm-um/pgalloc.h
index 73973ae..8fcb2fc 100644 (file)
--- a/include/asm-um/pgalloc.h
+++ b/include/asm-um/pgalloc.h
@@ -1,5 +1,6 @@
 /* 
  * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright 2003 PathScale, Inc.
  * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h
  * Licensed under the GPL
  */
@@ -7,18 +8,21 @@
 #ifndef __UM_PGALLOC_H
 #define __UM_PGALLOC_H
 
+#include "linux/config.h"
 #include "linux/mm.h"
 #include "asm/fixmap.h"
 
 #define pmd_populate_kernel(mm, pmd, pte) \
-               set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
+       set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
 
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, 
-                               struct page *pte)
-{
-       set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
-}
+#define pmd_populate(mm, pmd, pte)                             \
+       set_pmd(pmd, __pmd(_PAGE_TABLE +                        \
+               ((unsigned long long)page_to_pfn(pte) <<        \
+                       (unsigned long long) PAGE_SHIFT)))
 
+/*
+ * Allocate and free page tables.
+ */
 extern pgd_t *pgd_alloc(struct mm_struct *);
 extern void pgd_free(pgd_t *pgd);
 
@@ -37,15 +41,13 @@ static inline void pte_free(struct page *pte)
 
 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
 
+#ifdef CONFIG_3_LEVEL_PGTABLES
 /*
- * allocating and freeing a pmd is trivial: the 1-entry pmd is
- * inside the pgd, so has no extra memory associated with it.
+ * In the 3-level case we free the pmds as part of the pgd.
  */
-
-#define pmd_alloc_one(mm, addr)                ({ BUG(); ((pmd_t *)2); })
 #define pmd_free(x)                    do { } while (0)
 #define __pmd_free_tlb(tlb,x)          do { } while (0)
-#define pgd_populate(mm, pmd, pte)     BUG()
+#endif
 
 #define check_pgt_cache()      do { } while (0)