Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755809Ab3DLUHn (ORCPT ); Fri, 12 Apr 2013 16:07:43 -0400 Received: from mx1.redhat.com ([209.132.183.28]:11080 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752662Ab3DLUHm (ORCPT ); Fri, 12 Apr 2013 16:07:42 -0400 Date: Fri, 12 Apr 2013 16:07:27 -0400 From: Vivek Goyal To: "H. Peter Anvin" Cc: Thomas Gleixner , Ingo Molnar , WANG Chao , "Eric W. Biederman" , linux-kernel@vger.kernel.org, Yinghai Lu Subject: Re: [PATCH -v5 0/4] x86, kdump: Fix crashkernel high with old kexec-tools Message-ID: <20130412200726.GC2253@redhat.com> References: <1365749691-21299-1-git-send-email-yinghai@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1365749691-21299-1-git-send-email-yinghai@kernel.org> 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 Content-Length: 1472 Lines: 37 Hi hpa, Can you please consider including these patches for 3.9. Today, another kdump user ran into issues when he tried to use latest kernel (3.9-rcx) with existing kexec-tools. Obiviously kernel loading failed due to crashkernel memory being reserved too high. Thanks Vivek On Thu, Apr 11, 2013 at 11:54:47PM -0700, Yinghai Lu wrote: > Vivek found some problems with old kexec-tools. > > We keep the old crashkernel=X to old behavoir, so it will not break > old kexec-tools. > Add crashkernel=X,high to support new kexec-tools that supports loading high. > when high is used, memblock will search from top to low. > if the allocated one is above 4G, kernel will try to auto allocate > 72M under 4G for swiotlb. > user could crashkernel=Y,low to change 72M to other value. > > -v2: reorder the patch sequences > crashkernel=X,high, crashkernel=Y,low only handle simple form. > crashkernel=X will override crashkernel=X;high crashkernel=Y;low > -v3: update description in kernel-parameters.txt > update get_last_crashkernel and _simple checking about suffix. > -v4: update to use ,high again, and also not abuse parse_crashkernel_simple > -v5: tight checking about crashkernel=X,highextra,high > > Thanks > > Yinghai -- 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/