linux-kernel - Re: Re: Re: [PATCH] ARM: fix bug which VMALLOC

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Date:	Thu, 03 Sep 2015 17:43:29 +0900
From:	Yongtaek Lee <ytk.lee@...sung.com>
To:	Russell King <linux@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Nicolas Pitre <nicolas.pitre@...aro.org>
Subject: Re: Re: Re: [PATCH] ARM: fix bug which VMALLOC_START is lowwer than
 0xf0000000

> So, if we go and apply your logic to a 1GB system we should resize the
> vmalloc area to 0 bytes in order to avoid RAM truncation without
> CONFIG_HIGHMEM?

As you already know, CONFIG_HIGHMEM option is necessary if RAM is
more than 1GB. So no need to resize vmalloc area to 0. 

> Sorry, but the only sane options here are to either live with the
> truncation, enable CONFIG_HIGHMEM, or set vmalloc size manually.
> Changing a default value that affects everyone for the benefit of your
> specific use-case isn't a sane option.

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