diff options
| author | Jiang Liu <liuj97@gmail.com> | 2013-07-03 22:02:54 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 23:07:32 (GMT) |
| commit | 9af5b80765e4c30b8eba8218724459226fa5e81f (patch) | |
| tree | 26f348bcfeb39b67a65381493832cf9848c36388 /arch/arm64/mm/init.c | |
| parent | dbe67df4ba78c79db547c7864e1120981c144c97 (diff) | |
| download | linux-9af5b80765e4c30b8eba8218724459226fa5e81f.tar.xz | |
mm/ARM64: kill poison_init_mem()
Use free_reserved_area() to poison initmem memory pages and kill
poison_init_mem() on ARM64.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: <sworddragon2@aol.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Michel Lespinasse <walken@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm64/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 997c634..a398eb9 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -197,14 +197,6 @@ void __init bootmem_init(void) max_pfn = max_low_pfn = max; } -/* - * Poison init memory with an undefined instruction (0x0). - */ -static inline void poison_init_mem(void *s, size_t count) -{ - memset(s, 0, count); -} - #ifndef CONFIG_SPARSEMEM_VMEMMAP static inline void free_memmap(unsigned long start_pfn, unsigned long end_pfn) { @@ -386,8 +378,7 @@ void __init mem_init(void) void free_initmem(void) { - poison_init_mem(__init_begin, __init_end - __init_begin); - free_initmem_default(-1); + free_initmem_default(0); } #ifdef CONFIG_BLK_DEV_INITRD @@ -396,10 +387,8 @@ static int keep_initrd; void free_initrd_mem(unsigned long start, unsigned long end) { - if (!keep_initrd) { - poison_init_mem((void *)start, PAGE_ALIGN(end) - start); - free_reserved_area((void *)start, (void *)end, -1, "initrd"); - } + if (!keep_initrd) + free_reserved_area((void *)start, (void *)end, 0, "initrd"); } static int __init keepinitrd_setup(char *__unused) |