[LV-k25-commit] CVS: kernel-2.5/include/asm-vax/mm pagelet_pte.h,1.3,1.4

[Kenn H. <ke...@us...>]

Update of /cvsroot/linux-vax/kernel-2.5/include/asm-vax/mm
In directory sc8-pr-cvs1:/tmp/cvs-serv15899

Modified Files:
	pagelet_pte.h 
Log Message:
2.5.5 uses struct page pointers to refer to pages in page tables (to allow
PTEs in HIGHMEM).  This requires a few more macros for other arches.  We
stub these out here (pte_offset_kernel, pte_offset_map, 
pte_offset_map_nested, pte_unmap and pte_unmap_nested).


Index: pagelet_pte.h
===================================================================
RCS file: /cvsroot/linux-vax/kernel-2.5/include/asm-vax/mm/pagelet_pte.h,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- pagelet_pte.h	20 May 2002 00:33:39 -0000	1.3
+++ pagelet_pte.h	2 Dec 2002 00:12:30 -0000	1.4
@@ -275,7 +275,19 @@
 static inline int pte_present(pte_t pte)        { return (pte_val(pte) & _PAGE_VALID); }
 
 extern pte_t * pte_offset(pmd_t * dir, unsigned long address);
-					      
+
+/* These variants on pte_offset are for i386 where pages of PTEs might
+   be in highmem and thus have to be re-mapped < 4GB before accessing.
+   The pte_unmap() functions undo whatever has to be done by the _map()
+   functions */
+#define pte_offset_kernel(dir, address)		pte_offset(dir, address)
+#define pte_offset_map(dir, address)		pte_offset(dir, address)
+#define pte_offset_map_nested(dir, address)	pte_offset(dir, address)
+#define pte_unmap(pte)				/* nothing to undo */
+#define pte_unmap_nested(pte)			/* nothing to undo */
+
+
+
 /* items to manipulate a hwpte (for the S0 tables ) */
 
 static inline void set_hwpte(hwpte_t *ptep, hwpte_t pte)