linux-kernel - Re: RFC: banning device driver reserved resources from /dev/mem

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Message-ID: <20081005222600.11121739@infradead.org>
Date:	Sun, 5 Oct 2008 22:26:00 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Yinghai Lu <yinghai@...nel.org>
Subject: Re: RFC: banning device driver reserved resources from /dev/mem

On Mon, 6 Oct 2008 07:23:37 +0200
Ingo Molnar <mingo@...e.hu> wrote:
> 
> > +int iomem_is_reserved(u64 addr)
> > +{
> > +     struct resource *p = &iomem_resource;

...

> > +              */
> > +             if (p->start >= addr + size)
> > +                     continue;
> 
> do we want to skip all resources that are not IORESOURCE_MEM? Same
> holds for iomem_map_sanity_check(), introduced in tip/core/resources:

if we have non-IORESOURCE_MEM resources in the iomem_resource tree....
then we have bigger problems.

-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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