From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932221Ab3GBGFV (ORCPT ); Tue, 2 Jul 2013 02:05:21 -0400 Received: from smtp03.smtpout.orange.fr ([80.12.242.125]:40031 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932178Ab3GBGFS (ORCPT ); Tue, 2 Jul 2013 02:05:18 -0400 Message-ID: <51D26D9B.10301@free.fr> Date: Tue, 02 Jul 2013 08:05:15 +0200 From: Eric Valette Reply-To: eric.valette@free.fr User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130518 Icedove/17.0.5 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org CC: eric.valette@free.fr Subject: Re: memmap exclude boot command: how to check if it was indeed applied References: <51D1CD3B.80804@free.fr> In-Reply-To: <51D1CD3B.80804@free.fr> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/07/2013 20:40, Eric Valette wrote: > Hi, > > After hunting an unreproducible bug, I decided to run memtest86+ and > found that only 8 byte of memory refuse to write the last two digit on > the last 4GB memory stick. > > Memory is at 0x31db357558 > > So I decided to add a memmap=4K@0x000000031db35000 boot options in > GRUB_CMDLINE_LINUX. But checking dmesg, I see no mention of this page > being reserved. > > PS: CC me I'm not subscribed. Analysing /sys/firmware/memmap files, I see no trace of buggy address exclusion. Any help? --eric