linux-kernel - Re: [PATCH RFC] ARM: mm: Fix for highmem on machines with more than 14 cores

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Message-ID: <alpine.LFD.2.11.1403241727290.1291@knanqh.ubzr>
Date:	Mon, 24 Mar 2014 17:28:35 -0400 (EDT)
From:	Nicolas Pitre <nicolas.pitre@...aro.org>
To:	Anders Berg <anders.berg@....com>
cc:	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Fredrik Markström <fredrik.markstrom@...il.com>
Subject: Re: [PATCH RFC] ARM: mm: Fix for highmem on machines with more than
 14 cores

On Mon, 24 Mar 2014, Anders Berg wrote:

> The fixmap area was hard coded to 224 pages which was only enough for 14 CPU:s.
> Now the area adapts to the configured number of CPU:s (NR_CPUS). We still have
> a hard limit of 30 CPU:s since we only have a single pte-chunk (512 pte:s).
> 
> Signed-off-by: Anders Berg <anders.berg@....com>
> Signed-off-by: Fredrik Markström <fredrik.markstrom@...il.com>

This is under discussion already.  Please have a look at this thread:

http://news.gmane.org/group/gmane.linux.kernel/thread=1672068/


Nicolas