linux-kernel - [PATCH] [4/31] Add pte

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Message-Id: <20080114221636.0306F14F83@wotan.suse.de>
Date:	Mon, 14 Jan 2008 23:16:35 +0100 (CET)
From:	Andi Kleen <ak@...e.de>
To:	linux-kernel@...r.kernel.org, jbeulich@...ell.com, mingo@...e.hu,
	tglx@...utronix.de
Subject: [PATCH] [4/31] Add pte_pgprot on i386


64bit already had it.

Needed for later patches.

Signed-off-by: Andi Kleen <ak@...e.de>

---
 include/asm-x86/pgtable-2level.h |    2 ++
 include/asm-x86/pgtable-3level.h |    2 ++
 2 files changed, 4 insertions(+)

Index: linux/include/asm-x86/pgtable-2level.h
===================================================================
--- linux.orig/include/asm-x86/pgtable-2level.h
+++ linux/include/asm-x86/pgtable-2level.h
@@ -75,6 +75,8 @@ static inline int pte_exec_kernel(pte_t 
 #define pgoff_to_pte(off) \
 	((pte_t) { .pte_low = (((off) & 0x1f) << 1) + (((off) >> 5) << 8) + _PAGE_FILE })
 
+#define pte_pgprot(x) __pgprot((x).pte_low & 0xfff)
+
 /* Encode and de-code a swap entry */
 #define __swp_type(x)			(((x).val >> 1) & 0x1f)
 #define __swp_offset(x)			((x).val >> 8)
Index: linux/include/asm-x86/pgtable-3level.h
===================================================================
--- linux.orig/include/asm-x86/pgtable-3level.h
+++ linux/include/asm-x86/pgtable-3level.h
@@ -142,6 +142,8 @@ static inline unsigned long pte_pfn(pte_
 	return pte_val(pte) >> PAGE_SHIFT;
 }
 
+#define pte_pgprot(x) __pgprot(pte_val(x) & (0xfff | _PAGE_NX))
+
 /*
  * Bits 0, 6 and 7 are taken in the low part of the pte,
  * put the 32 bits of offset into the high part.
--
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