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[ARM] Fix ARMv6 page table bits
author
Russell King
<rmk@dyn-67.arm.linux.org.uk>
Thu, 1 Sep 2005 21:41:55 +0000
(22:41 +0100)
committer
Russell King
<rmk+kernel@arm.linux.org.uk>
Thu, 1 Sep 2005 21:41:55 +0000
(22:41 +0100)
We weren't explicitly setting the page table bits we desired
in user_prot in the protection table, which resulted in the
user mappings for v6 CPUs being marked global.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/mm/mm-armv.c
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diff --git
a/arch/arm/mm/mm-armv.c
b/arch/arm/mm/mm-armv.c
index
3a81944
..
d125a3d
100644
(file)
--- a/
arch/arm/mm/mm-armv.c
+++ b/
arch/arm/mm/mm-armv.c
@@
-453,7
+453,7
@@
static void __init build_mem_type_table(void)
for (i = 0; i < 16; i++) {
unsigned long v = pgprot_val(protection_map[i]);
- v
&= (
~(PTE_BUFFERABLE|PTE_CACHEABLE)) | user_pgprot;
+ v
= (v &
~(PTE_BUFFERABLE|PTE_CACHEABLE)) | user_pgprot;
protection_map[i] = __pgprot(v);
}