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

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Message-ID: <511933F5.9000902@zytor.com>
Date:	Mon, 11 Feb 2013 10:09:57 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Dave Hansen <dave@...ux.vnet.ibm.com>
CC:	Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, mingo@...nel.org, tglx@...utronix.de
Subject: Re: [PATCH 1/2] add helper for highmem checks

On 02/11/2013 09:32 AM, Dave Hansen wrote:
> 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.
>

Awesome :)

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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