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Re: [PATCHv3 2/2] arm: use max_lowmem_limit in find_limit()

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  Re: [PATCHv3 2/2] arm: use max_lowmem_limit in find_limit() Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-06-11 00:50 +0200

#1162923 — Re: [PATCHv3 2/2] arm: use max_lowmem_limit in find_limit()

On Thu, Jun 11, 2015 at 02:59:33AM +0800, Min-Hua Chen wrote:
> In commit: 1c2f87c22566cd057bc8cde10c37ae9da1a1bb76, the max_low is
> set by memblock_get_current_limit(). However memblock.current_limit
> can be changed by memblock_set_current_limit() any point before
> find_limits().
> 
> It's better to use arm_lowmem_limit to be max_lowmem in two ways:
> First, arm_lowmem_limit cannot be changed by a public API. Second, the
> high_memory is set by arm_lowmem_limit and is a natural limit of
> low memory area in bootmem_init().
> 
> Signed-off-by: Min-Hua Chen <orca.chen@gmail.com>

NAK, this is a known build breaker.

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