Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752778AbaAKQfN (ORCPT ); Sat, 11 Jan 2014 11:35:13 -0500 Received: from mail-in-08.arcor-online.net ([151.189.21.48]:42926 "EHLO mail-in-08.arcor-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751241AbaAKQfG (ORCPT ); Sat, 11 Jan 2014 11:35:06 -0500 X-Greylist: Passed host: 95.91.230.143 X-DKIM: Sendmail DKIM Filter v2.8.2 mail-in-03.arcor-online.net E2CC7D8A78 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 X-Greylist: Passed host: 95.91.230.143 Date: Sat, 11 Jan 2014 16:35:00 +0000 (UTC) From: 7eggert@gmx.de To: Prarit Bhargava cc: linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Len Brown , "Rafael J. Wysocki" , Linn Crosetto , Pekka Enberg , Yinghai Lu , Andrew Morton , Toshi Kani , Tang Chen , Wen Congyang , Vivek Goyal , kosaki.motohiro@gmail.com, dyoung@redhat.com, linux-acpi@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 2/2] x86, e820 disable ACPI Memory Hotplug if memory mapping is specified by user [v2] In-Reply-To: <1389380698-19361-4-git-send-email-prarit@redhat.com> Message-ID: References: <1389380698-19361-1-git-send-email-prarit@redhat.com> <1389380698-19361-4-git-send-email-prarit@redhat.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 10 Jan 2014, Prarit Bhargava wrote: > kdump uses memmap=exactmap and mem=X values to configure the memory > mapping for the kdump kernel. If memory is hotadded during the boot of > the kdump kernel it is possible that the page tables for the new memory > cause the kdump kernel to run out of memory. > > Since the user has specified a specific mapping ACPI Memory Hotplug should be > disabled in this case. I'll ask just in case: Is it possible to want memory hotplug in spite of using memmap=exactmap or mem=X? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/