Re: [PATCH] ARC: adjust memblock_reserve of kernel memory

From: Vineet Gupta
Date: Wed Dec 19 2018 - 22:49:51 EST

On 12/19/18 8:16 AM, Eugeniy Paltsev wrote:
> In setup_arch_memory we reserve the memory area wherein the kernel
> is located. Current implementation may reserve more memory than
> it actually required in case of CONFIG_LINUX_LINK_BASE is not
> equal to CONFIG_LINUX_RAM_BASE. This happens because we calculate
> start of the reserved region relatively to the CONFIG_LINUX_RAM_BASE
> and end of the region relatively to the CONFIG_LINUX_RAM_BASE.
> For example in case of HSDK board we wasted 256MiB of physical memory:
> ------------------->8------------------------------
> Memory: 770416K/1048576K available (5496K kernel code,
> 240K rwdata, 1064K rodata, 2200K init, 275K bss,
> 278160K reserved, 0K cma-reserved)
> ------------------->8------------------------------
> Fix that.
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@xxxxxxxxxxxx>

LGTM. I presume you have booted HSDK with it and done some smoke testing.