linux-kernel - [PATCH CPA] [3/28] Add pte accessors for the global bit

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Message-Id: <20080103152417.2BA7E14E23@wotan.suse.de>
Date:	Thu,  3 Jan 2008 16:24:17 +0100 (CET)
From:	Andi Kleen <ak@...e.de>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH CPA] [3/28] Add pte accessors for the global bit


Needed for some test code.

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

---
 include/asm-x86/pgtable_32.h |    3 +++
 include/asm-x86/pgtable_64.h |    3 +++
 2 files changed, 6 insertions(+)

Index: linux/include/asm-x86/pgtable_64.h
===================================================================
--- linux.orig/include/asm-x86/pgtable_64.h
+++ linux/include/asm-x86/pgtable_64.h
@@ -275,6 +275,7 @@ static inline int pte_young(pte_t pte)		
 static inline int pte_write(pte_t pte)		{ return pte_val(pte) & _PAGE_RW; }
 static inline int pte_file(pte_t pte)		{ return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_huge(pte_t pte)		{ return pte_val(pte) & _PAGE_PSE; }
+static inline int pte_global(pte_t pte)		{ return pte_val(pte) & _PAGE_GLOBAL; }
 
 static inline pte_t pte_mkclean(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_DIRTY)); return pte; }
 static inline pte_t pte_mkold(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_ACCESSED)); return pte; }
@@ -285,6 +286,8 @@ static inline pte_t pte_mkyoung(pte_t pt
 static inline pte_t pte_mkwrite(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) | _PAGE_RW)); return pte; }
 static inline pte_t pte_mkhuge(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) | _PAGE_PSE)); return pte; }
 static inline pte_t pte_clrhuge(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_PSE)); return pte; }
+static inline pte_t pte_mkglobal(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) | _PAGE_GLOBAL)); return pte; }
+static inline pte_t pte_clrglobal(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_GLOBAL)); return pte; }
 
 struct vm_area_struct;
 
Index: linux/include/asm-x86/pgtable_32.h
===================================================================
--- linux.orig/include/asm-x86/pgtable_32.h
+++ linux/include/asm-x86/pgtable_32.h
@@ -220,6 +220,7 @@ static inline int pte_dirty(pte_t pte)		
 static inline int pte_young(pte_t pte)		{ return (pte).pte_low & _PAGE_ACCESSED; }
 static inline int pte_write(pte_t pte)		{ return (pte).pte_low & _PAGE_RW; }
 static inline int pte_huge(pte_t pte)		{ return (pte).pte_low & _PAGE_PSE; }
+static inline int pte_global(pte_t pte)		{ return (pte).pte_low & _PAGE_GLOBAL; }
 
 /*
  * The following only works if pte_present() is not true.
@@ -233,6 +234,8 @@ static inline pte_t pte_mkdirty(pte_t pt
 static inline pte_t pte_mkyoung(pte_t pte)	{ (pte).pte_low |= _PAGE_ACCESSED; return pte; }
 static inline pte_t pte_mkwrite(pte_t pte)	{ (pte).pte_low |= _PAGE_RW; return pte; }
 static inline pte_t pte_mkhuge(pte_t pte)	{ (pte).pte_low |= _PAGE_PSE; return pte; }
+static inline pte_t pte_mkglobal(pte_t pte)	{ (pte).pte_low |= _PAGE_GLOBAL; return pte; }
+static inline pte_t pte_clrglobal(pte_t pte)	{ (pte).pte_low &= ~_PAGE_GLOBAL; return pte; }
 
 #ifdef CONFIG_X86_PAE
 # include <asm/pgtable-3level.h>
--
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