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| author | Mark Salter <msalter@redhat.com> | 2014-08-13 20:04:49 +0400 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2014-10-17 01:38:52 +0400 |
| commit | b615bbbff1c4d6fcd13007e75d75f6510aeb3808 (patch) | |
| tree | 6b6ed6b813bd710d73aa77b5f68e6628e2a1a7fd /arch/arm/mm/init.c | |
| parent | bfe01a5ba2490f299e1d2d5508cbbbadd897bbe9 (diff) | |
| download | linux-b615bbbff1c4d6fcd13007e75d75f6510aeb3808.tar.xz | |
arm: use generic fixmap.h
ARM is different from other architectures in that fixmap pages are indexed
with a positive offset from FIXADDR_START. Other architectures index with
a negative offset from FIXADDR_TOP. In order to use the generic fixmap.h
definitions, this patch redefines FIXADDR_TOP to be inclusive of the
useable range. That is, FIXADDR_TOP is the virtual address of the topmost
fixed page. The newly defined FIXADDR_END is the first virtual address
past the fixed mappings.
Signed-off-by: Mark Salter <msalter@redhat.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
[kees: update for a05e54c103b0 ("ARM: 8031/2: change fixmap ...")]
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Laura Abbott <lauraa@codeaurora.org>
Cc: Rob Herring <robh@kernel.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Diffstat (limited to 'arch/arm/mm/init.c')
| -rw-r--r-- | arch/arm/mm/init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 659c75d808dc..ad82c05bfc3a 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -570,7 +570,7 @@ void __init mem_init(void) MLK(DTCM_OFFSET, (unsigned long) dtcm_end), MLK(ITCM_OFFSET, (unsigned long) itcm_end), #endif - MLK(FIXADDR_START, FIXADDR_TOP), + MLK(FIXADDR_START, FIXADDR_END), MLM(VMALLOC_START, VMALLOC_END), MLM(PAGE_OFFSET, (unsigned long)high_memory), #ifdef CONFIG_HIGHMEM |