From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6499EC43334 for ; Wed, 8 Jun 2022 17:39:02 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4LJDx04LNnz3cCm for ; Thu, 9 Jun 2022 03:39:00 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.crashing.org (client-ip=63.228.1.57; helo=gate.crashing.org; envelope-from=segher@kernel.crashing.org; receiver=) Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) by lists.ozlabs.org (Postfix) with ESMTP id 4LJDwY5slRz3blw for ; Thu, 9 Jun 2022 03:38:36 +1000 (AEST) Received: from gate.crashing.org (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.14.1) with ESMTP id 258HaR2c024563; Wed, 8 Jun 2022 12:36:27 -0500 Received: (from segher@localhost) by gate.crashing.org (8.14.1/8.14.1/Submit) id 258HaR86024562; Wed, 8 Jun 2022 12:36:27 -0500 X-Authentication-Warning: gate.crashing.org: segher set sender to segher@kernel.crashing.org using -f Date: Wed, 8 Jun 2022 12:36:27 -0500 From: Segher Boessenkool To: Michael Ellerman Subject: Re: ppc64le bzImage and Build_id elf note Message-ID: <20220608173627.GO25951@gate.crashing.org> References: <874k0vgyo6.fsf@mpe.ellerman.id.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <874k0vgyo6.fsf@mpe.ellerman.id.au> User-Agent: Mutt/1.4.2.3i X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Donald Zickus , Justin Forbes , Bruno Goncalves , Daniel Horak , Veronika Kabatova , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, Jun 08, 2022 at 09:52:25PM +1000, Michael Ellerman wrote: > What's the motivation for using the zImage? You cannot boot a vmlinux from OF directly, with most PowerPC OF implementations. You *can* boot a zImage directly (with some trickery sometimes). That is one reason to use zImage, probably not a very important reason for most people though. Segher