Use free_reserved_area() to poison initmem memory pages and kill poison_init_mem() on ARM64.
Signed-off-by: Jiang Liu <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Cc: [email protected] Cc: [email protected] --- 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) -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
