linux-kernel - Re: [patch] ioremap sanity check to catch mapping requests exceeding the BAR sizes

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Date:	Sat, 27 Sep 2008 08:09:06 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	jbarnes@...tuousgeek.org, mingo@...e.hu, tglx@...utronix.de,
	hpa@...or.com, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [patch] ioremap sanity check to catch mapping requests exceeding
 the BAR sizes

Jeremy Fitzhardinge wrote:
> Alan Cox wrote:
>>> Any attempt to use ioremap on memory is a bug, so you should warn about
>>> that too.
>>>     
>> We use it to ioremap things like the BIOS...
> 
> Yeah, that's fine.  I mean using ioremap on system memory is a bug.
> 

ioremap() already warns on that in a separate check.

>     J

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