Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754162Ab3CKS1M (ORCPT ); Mon, 11 Mar 2013 14:27:12 -0400 Received: from mx1.redhat.com ([209.132.183.28]:54789 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753611Ab3CKS1L (ORCPT ); Mon, 11 Mar 2013 14:27:11 -0400 Date: Mon, 11 Mar 2013 14:26:55 -0400 From: Vivek Goyal To: Yinghai Lu Cc: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , WANG Chao , "Eric W. Biederman" , linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86, kdump: Set crashkernel_low automatically Message-ID: <20130311182655.GB12107@redhat.com> References: <513D52BA.3070206@redhat.com> <1362977817-23297-1-git-send-email-yinghai@kernel.org> <20130311144853.GB8482@redhat.com> <20130311150256.GC8482@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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: 1389 Lines: 38 On Mon, Mar 11, 2013 at 10:58:39AM -0700, Yinghai Lu wrote: > On Mon, Mar 11, 2013 at 8:02 AM, Vivek Goyal wrote: > > > > IOW, wouldn't it be better that crashkernel=X first tries to find > > requested amount of memory in lowest memory area available/possible. > > Yest, that is much better, and user even could stay with old kexec-tools > for system that does not tons of memory. > And I don't need to mess up with auto setting crashkernel_low or export > swiotlb_size() etc. > > Please check if you are ok with attached one. > Hi Yinghai, In mutt your patches are showing as attachment instead of inline. Mutt thinks attachment is of type "application/octet-stream". Not sure if this is configuration issue on my part or something is going on your end. I have few more concerns. - Are we able to reserve 512MB memory now below 896MB. I remember so far it was broken. - If reserving memory below 896MB fails, we immediately switch to reserving anywhere till MAXMEM. Would it make sense to first try to reserve it below 4G (so that we don't have to worry much about swiotlb or iommu being on). Thanks Vivek -- 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/