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authorImre_Deak <imre.deak@solidboot.com>2007-02-11 13:45:13 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-02-11 17:06:17 +0000
commit44b18693904e65d840ae999ac8aa717551cf509f (patch)
treee4c7c9b1676a94d4488b0a5a4023fcbf23c002e4 /include/asm-arm/pgtable.h
parenteeea82ff4a3aebed9f501f04ca7b65d3605f247a (diff)
[ARM] 4158/1: Fix user page protection macros
The PAGE_* user page protection macros don't take into account the configured memory policy and other architecture specific bits like the global/ASID and shared mapping bits. Instead of constants let these depend on a variable fixed up at init just like PAGE_KERNEL. Signed-off-by: Imre Deak <imre.deak@solidboot.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/pgtable.h')
-rw-r--r--include/asm-arm/pgtable.h54
1 files changed, 32 insertions, 22 deletions
diff --git a/include/asm-arm/pgtable.h b/include/asm-arm/pgtable.h
index b8cf2d5ec304..7b2bafce21a2 100644
--- a/include/asm-arm/pgtable.h
+++ b/include/asm-arm/pgtable.h
@@ -175,19 +175,29 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
#ifndef __ASSEMBLY__
/*
- * The following macros handle the cache and bufferable bits...
+ * The pgprot_* and protection_map entries will be fixed up in runtime
+ * to include the cachable and bufferable bits based on memory policy,
+ * as well as any architecture dependent bits like global/ASID and SMP
+ * shared mapping bits.
*/
#define _L_PTE_DEFAULT L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_CACHEABLE | L_PTE_BUFFERABLE
#define _L_PTE_READ L_PTE_USER | L_PTE_EXEC
+extern pgprot_t pgprot_user;
extern pgprot_t pgprot_kernel;
-#define PAGE_NONE __pgprot(_L_PTE_DEFAULT)
-#define PAGE_COPY __pgprot(_L_PTE_DEFAULT | _L_PTE_READ)
-#define PAGE_SHARED __pgprot(_L_PTE_DEFAULT | _L_PTE_READ | L_PTE_WRITE)
-#define PAGE_READONLY __pgprot(_L_PTE_DEFAULT | _L_PTE_READ)
+#define PAGE_NONE pgprot_user
+#define PAGE_COPY __pgprot(pgprot_val(pgprot_user) | _L_PTE_READ)
+#define PAGE_SHARED __pgprot(pgprot_val(pgprot_user) | _L_PTE_READ | \
+ L_PTE_WRITE)
+#define PAGE_READONLY __pgprot(pgprot_val(pgprot_user) | _L_PTE_READ)
#define PAGE_KERNEL pgprot_kernel
+#define __PAGE_NONE __pgprot(_L_PTE_DEFAULT)
+#define __PAGE_COPY __pgprot(_L_PTE_DEFAULT | _L_PTE_READ)
+#define __PAGE_SHARED __pgprot(_L_PTE_DEFAULT | _L_PTE_READ | L_PTE_WRITE)
+#define __PAGE_READONLY __pgprot(_L_PTE_DEFAULT | _L_PTE_READ)
+
#endif /* __ASSEMBLY__ */
/*
@@ -198,23 +208,23 @@ extern pgprot_t pgprot_kernel;
* 2) If we could do execute protection, then read is implied
* 3) write implies read permissions
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
+#define __P000 __PAGE_NONE
+#define __P001 __PAGE_READONLY
+#define __P010 __PAGE_COPY
+#define __P011 __PAGE_COPY
+#define __P100 __PAGE_READONLY
+#define __P101 __PAGE_READONLY
+#define __P110 __PAGE_COPY
+#define __P111 __PAGE_COPY
+
+#define __S000 __PAGE_NONE
+#define __S001 __PAGE_READONLY
+#define __S010 __PAGE_SHARED
+#define __S011 __PAGE_SHARED
+#define __S100 __PAGE_READONLY
+#define __S101 __PAGE_READONLY
+#define __S110 __PAGE_SHARED
+#define __S111 __PAGE_SHARED
#ifndef __ASSEMBLY__
/*