From: Ingo Molnar <[EMAIL PROTECTED]>
PPC32 bits of RFP - as in original patch.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]>
---
linux-2.6.git-paolo/include/asm-ppc/pgtable.h | 15 +++++++++++----
1 files changed, 11 insertions(+), 4 deletions(-)
diff -puN include/asm-ppc/pgtable.h~rfp-arch-ppc include/asm-ppc/pgtable.h
--- linux-2.6.git/include/asm-ppc/pgtable.h~rfp-arch-ppc 2005-08-12
18:18:43.000000000 +0200
+++ linux-2.6.git-paolo/include/asm-ppc/pgtable.h 2005-08-12
18:39:57.000000000 +0200
@@ -309,8 +309,8 @@ extern unsigned long ioremap_bot, iorema
/* Definitions for 60x, 740/750, etc. */
#define _PAGE_PRESENT 0x001 /* software: pte contains a translation */
#define _PAGE_HASHPTE 0x002 /* hash_page has made an HPTE for this pte */
-#define _PAGE_FILE 0x004 /* when !present: nonlinear file mapping */
#define _PAGE_USER 0x004 /* usermode access allowed */
+#define _PAGE_FILE 0x008 /* when !present: nonlinear file mapping */
#define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */
#define _PAGE_COHERENT 0x010 /* M: enforce memory coherence (SMP systems) */
#define _PAGE_NO_CACHE 0x020 /* I: cache inhibit */
@@ -728,9 +728,16 @@ extern void paging_init(void);
#define __swp_entry_to_pte(x) ((pte_t) { (x).val << 3 })
/* Encode and decode a nonlinear file mapping entry */
-#define PTE_FILE_MAX_BITS 29
-#define pte_to_pgoff(pte) (pte_val(pte) >> 3)
-#define pgoff_to_pte(off) ((pte_t) { ((off) << 3) | _PAGE_FILE })
+#define PTE_FILE_MAX_BITS 27
+#define pte_to_pgoff(pte) (((pte_val(pte) & ~0x7ff) >> 5) \
+ | ((pte_val(pte) & 0x3f0) >> 4))
+#define pte_to_pgprot(pte) \
+__pgprot((pte_val(pte) & (_PAGE_USER|_PAGE_RW|_PAGE_PRESENT)) | _PAGE_ACCESSED)
+
+#define pgoff_prot_to_pte(off, prot) \
+ ((pte_t) { (((off) << 5) & ~0x7ff) | (((off) << 4) & 0x3f0) \
+ | (pgprot_val(prot) & (_PAGE_USER|_PAGE_RW)) \
+ | _PAGE_FILE })
/* CONFIG_APUS */
/* For virtual address to physical address conversion */
_
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