From 6119be0bba10e7e7b1e5650a87812fa2fd8d3a60 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Tue, 19 Apr 2005 13:29:21 -0700 Subject: [PATCH] freepgt: arm FIRST_USER_ADDRESS PAGE_SIZE ARM define FIRST_USER_ADDRESS as PAGE_SIZE (beyond the machine vectors when they are mapped low), and use that definition in place of locally defined MIN_MAP_ADDR. Signed-off-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-arm/pgtable.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/asm-arm/pgtable.h') diff --git a/include/asm-arm/pgtable.h b/include/asm-arm/pgtable.h index 91ffb1f4cd1..2df4eacf4fa 100644 --- a/include/asm-arm/pgtable.h +++ b/include/asm-arm/pgtable.h @@ -102,6 +102,13 @@ extern void __pgd_error(const char *file, int line, unsigned long val); #define PGDIR_SIZE (1UL << PGDIR_SHIFT) #define PGDIR_MASK (~(PGDIR_SIZE-1)) +/* + * This is the lowest virtual address we can permit any user space + * mapping to be mapped at. This is particularly important for + * non-high vector CPUs. + */ +#define FIRST_USER_ADDRESS PAGE_SIZE + #define FIRST_USER_PGD_NR 1 #define USER_PTRS_PER_PGD ((TASK_SIZE/PGDIR_SIZE) - FIRST_USER_PGD_NR) -- cgit v1.2.3