linux-kernel - Re: [PATCH 1/2] add helper for highmem checks

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Message-ID: <51192B39.9060501@linux.vnet.ibm.com>
Date:	Mon, 11 Feb 2013 09:32:41 -0800
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, hpa@...or.com, mingo@...nel.org,
	tglx@...utronix.de
Subject: Re: [PATCH 1/2] add helper for highmem checks

On 02/09/2013 02:47 AM, Borislav Petkov wrote:
> On Sat, Feb 09, 2013 at 10:41:21AM +0100, Borislav Petkov wrote:
> With this change, they definitely fix something because I even get X on
> the box started. Previously, it would spit out the warning and wouldn't
> start X with the login window. And my suspicion is that wdm (WINGs
> display manager) I'm using, does /dev/mem accesses when it starts and it
> obviously failed. Now not so much :-)

That's crazy.  Didn't expect that at all.

I guess X is happier getting an error than getting random pages back.
I'm working on a set of patches now that should get it _working_ instead
of just returning an error.

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