Update pte encoding macros for i386 and x86-64.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <[email protected]>
---
linux-2.6.git-paolo/include/asm-i386/pgtable-2level.h | 15 ++++++++++-----
linux-2.6.git-paolo/include/asm-i386/pgtable-3level.h | 11 ++++++++++-
linux-2.6.git-paolo/include/asm-x86_64/pgtable.h | 12 +++++++++++-
3 files changed, 31 insertions(+), 7 deletions(-)
diff -puN include/asm-i386/pgtable-2level.h~rfp-arch-i386-x86_64 include/asm-i386/pgtable-2level.h
--- linux-2.6.git/include/asm-i386/pgtable-2level.h~rfp-arch-i386-x86_64 2005-08-11 11:42:28.000000000 +0200
+++ linux-2.6.git-paolo/include/asm-i386/pgtable-2level.h 2005-08-11 11:42:28.000000000 +0200
@@ -48,16 +48,21 @@ static inline int pte_exec_kernel(pte_t
}
/*
- * Bits 0, 6 and 7 are taken, split up the 29 bits of offset
+ * Bits 0, 1, 6 and 7 are taken, split up the 28 bits of offset
* into this range:
*/
-#define PTE_FILE_MAX_BITS 29
+#define PTE_FILE_MAX_BITS 28
#define pte_to_pgoff(pte) \
- ((((pte).pte_low >> 1) & 0x1f ) + (((pte).pte_low >> 8) << 5 ))
+ ((((pte).pte_low >> 2) & 0xf ) + (((pte).pte_low >> 8) << 4 ))
+#define pte_to_pgprot(pte) \
+ __pgprot(((pte).pte_low & (_PAGE_RW | _PAGE_PROTNONE)) \
+ | (((pte).pte_low & _PAGE_PROTNONE) ? 0 : \
+ (_PAGE_USER | _PAGE_PRESENT)) | _PAGE_ACCESSED)
-#define pgoff_to_pte(off) \
- ((pte_t) { (((off) & 0x1f) << 1) + (((off) >> 5) << 8) + _PAGE_FILE })
+#define pgoff_prot_to_pte(off, prot) \
+ ((pte_t) { (((off) & 0xf) << 2) + (((off) >> 4) << 8) + \
+ (pgprot_val(prot) & (_PAGE_RW | _PAGE_PROTNONE)) + _PAGE_FILE })
/* Encode and de-code a swap entry */
#define __swp_type(x) (((x).val >> 1) & 0x1f)
diff -puN include/asm-i386/pgtable-3level.h~rfp-arch-i386-x86_64 include/asm-i386/pgtable-3level.h
--- linux-2.6.git/include/asm-i386/pgtable-3level.h~rfp-arch-i386-x86_64 2005-08-11 11:42:28.000000000 +0200
+++ linux-2.6.git-paolo/include/asm-i386/pgtable-3level.h 2005-08-11 11:42:28.000000000 +0200
@@ -145,7 +145,16 @@ static inline pmd_t pfn_pmd(unsigned lon
* put the 32 bits of offset into the high part.
*/
#define pte_to_pgoff(pte) ((pte).pte_high)
-#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) })
+
+#define pte_to_pgprot(pte) \
+ __pgprot(((pte).pte_low & (_PAGE_RW | _PAGE_PROTNONE)) \
+ | (((pte).pte_low & _PAGE_PROTNONE) ? 0 : \
+ (_PAGE_USER | _PAGE_PRESENT)) | _PAGE_ACCESSED)
+
+#define pgoff_prot_to_pte(off, prot) \
+ ((pte_t) { _PAGE_FILE + \
+ (pgprot_val(prot) & (_PAGE_RW | _PAGE_PROTNONE)) , (off) })
+
#define PTE_FILE_MAX_BITS 32
/* Encode and de-code a swap entry */
diff -puN include/asm-x86_64/pgtable.h~rfp-arch-i386-x86_64 include/asm-x86_64/pgtable.h
--- linux-2.6.git/include/asm-x86_64/pgtable.h~rfp-arch-i386-x86_64 2005-08-11 11:42:28.000000000 +0200
+++ linux-2.6.git-paolo/include/asm-x86_64/pgtable.h 2005-08-11 11:42:28.000000000 +0200
@@ -343,9 +343,19 @@ static inline pud_t *__pud_offset_k(pud_
#define pmd_pfn(x) ((pmd_val(x) >> PAGE_SHIFT) & __PHYSICAL_MASK)
#define pte_to_pgoff(pte) ((pte_val(pte) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT)
-#define pgoff_to_pte(off) ((pte_t) { ((off) << PAGE_SHIFT) | _PAGE_FILE })
#define PTE_FILE_MAX_BITS __PHYSICAL_MASK_SHIFT
+#define pte_to_pgprot(pte) \
+ __pgprot((pte_val(pte) & (_PAGE_RW | _PAGE_PROTNONE)) \
+ | ((pte_val(pte) & _PAGE_PROTNONE) ? 0 : \
+ (_PAGE_USER | _PAGE_PRESENT)) | _PAGE_ACCESSED)
+
+#define pgoff_prot_to_pte(off, prot) \
+ ((pte_t) { _PAGE_FILE + \
+ (pgprot_val(prot) & (_PAGE_RW | _PAGE_PROTNONE)) + \
+ ((off) << PAGE_SHIFT) })
+
+
/* PTE - Level 1 access. */
/* page, protection -> pte */
_
-
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