From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758823Ab3BKS2d (ORCPT ); Mon, 11 Feb 2013 13:28:33 -0500 Received: from mail.skyhub.de ([78.46.96.112]:57782 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758776Ab3BKS2c (ORCPT ); Mon, 11 Feb 2013 13:28:32 -0500 Date: Mon, 11 Feb 2013 19:28:26 +0100 From: Borislav Petkov To: Dave Hansen Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, hpa@zytor.com, mingo@kernel.org, tglx@linutronix.de Subject: Re: [PATCH 1/2] add helper for highmem checks Message-ID: <20130211182826.GE2683@pd.tnic> Mail-Followup-To: Borislav Petkov , Dave Hansen , linux-kernel@vger.kernel.org, linux-mm@kvack.org, hpa@zytor.com, mingo@kernel.org, tglx@linutronix.de References: <20130208202813.62965F25@kernel.stglabs.ibm.com> <20130209094121.GB17728@pd.tnic> <20130209104751.GC17728@pd.tnic> <51192B39.9060501@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <51192B39.9060501@linux.vnet.ibm.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 11, 2013 at 09:32:41AM -0800, Dave Hansen wrote: > That's crazy. Didn't expect that at all. > > I guess X is happier getting an error than getting random pages back. Yeah, I think this is something special only this window manager wdm does. The line below has appeared repeatedly in the logs earlier: Feb 5 23:02:02 a1 wdm: Cannot read randomFile "/dev/mem", errno = 14 This happens when wdm starts so I'm going to guess it uses it for something funny, "randomFile" it calls it?? With the WARN_ON check added and booting 3.8-rc6, it would choke wdm somehow and it wouldn't start properly so that even the error out above doesn't happen. Oh well ... > I'm working on a set of patches now that should get it _working_ > instead of just returning an error. Yeah, send them on and I'll run them. Thanks. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. --