On Sat, Mar 16, 2013 at 05:03:23PM +0000, Jiang Liu wrote:
> Use free_reserved_area() to kill poison_init_mem() on ARM64.
>
> Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx>
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
> 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 e58dd7f..b87bdb8 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);
This change looks unrelated to $subject. We should probably just poison with
0 from the outset, when free_initmem_default is introduced.
Will
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