From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from ns2.suse.de ([195.135.220.15] helo=mx2.suse.de) by bombadil.infradead.org with esmtps (Exim 4.68 #1 (Red Hat Linux)) id 1KIT4n-0007ml-7T for kexec@lists.infradead.org; Mon, 14 Jul 2008 18:47:09 +0000 Date: Mon, 14 Jul 2008 20:47:48 +0200 From: Bernhard Walle Subject: Re: [PATCH] x86: Find offset for crashkernel reservation automatically Message-ID: <20080714204748.07b06e30@halley.suse.de> In-Reply-To: References: <1214510048-21215-1-git-send-email-bwalle@suse.de> <20080627133256.GB5801@redhat.com> <86802c440807140011v728cc35fy2540b537ddca9844@mail.gmail.com> <20080714112404.36783df5@halley.suse.de> <86802c440807141006o98afac8t66b0933d8acd2746@mail.gmail.com> <86802c440807141117q218fdd61w1216dc6ded72252a@mail.gmail.com> Mime-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: kexec-bounces@lists.infradead.org Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: "Eric W. Biederman" Cc: x86@kernel.org, kexec@lists.infradead.org, Yinghai Lu , Vivek Goyal , linux-kernel@vger.kernel.org * Eric W. Biederman [2008-07-14 11:41]: > > "Yinghai Lu" writes: > > > On Mon, Jul 14, 2008 at 10:30 AM, Eric W. Biederman > > wrote: > >> "Yinghai Lu" writes: > >> > >>> for 64bit, kdump can start from address above 4g with bzImage? > >> > >> I think the boot protocol was properly updated for that, it was in the > >> original drafts. A relocatable kernel with a 64bit entry point. > >> > >> I do know that the 64bit code is ready to do that. > > > > but bzImage for 64bit still use 32bit entries, except kexec could > > uncompress the bzImage like xen domain builder. > > From the standpoint of the crashdump option it doesn't matter. > As the vmlinux supports it, and bzImage could easily support it, > the decompresser is 64bit code. > > If bzImage doesn't support it that is a bug we will have to > correct one of these years when it actually matters. But such checks belong into kexec itself, not into the kernel. Bernhard -- Bernhard Walle, SUSE LINUX Products GmbH, Architecture Development _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec