[PATCH v6, part3 03/16] mm/ARM64: kill poison_init_mem()
From: Jiang Liu <hidden>
Date: 2013-05-11 17:40:28
Also in:
linux-arch, linux-mm, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Use free_reserved_area() to poison initmem memory pages and kill poison_init_mem() on ARM64. Signed-off-by: Jiang Liu <redacted> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <redacted> Cc: linux-arm-kernel at lists.infradead.org Cc: linux-kernel at vger.kernel.org --- arch/arm64/mm/init.c | 17 +++-------------- 1 file 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)
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1.8.1.2