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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7DEFC43144 for ; Mon, 25 Jun 2018 08:49:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9B23925632 for ; Mon, 25 Jun 2018 08:49:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9B23925632 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754652AbeFYIte (ORCPT ); Mon, 25 Jun 2018 04:49:34 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:35314 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754071AbeFYItc (ORCPT ); Mon, 25 Jun 2018 04:49:32 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id EA495401EF2B; Mon, 25 Jun 2018 08:49:31 +0000 (UTC) Received: from gondolin (dhcp-192-215.str.redhat.com [10.33.192.215]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7044479DD; Mon, 25 Jun 2018 08:49:30 +0000 (UTC) Date: Mon, 25 Jun 2018 10:49:28 +0200 From: Cornelia Huck To: Vasily Gorbik Cc: Christian Borntraeger , Guenter Roeck , Martin Schwidefsky , Heiko Carstens , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, qemu-s390x , qemu-devel , Thomas Huth Subject: Re: s390 qemu boot failure in -next Message-ID: <20180625104928.6c4cb239.cohuck@redhat.com> In-Reply-To: References: <20180622194736.GA5794@roeck-us.net> <126ac556-0602-b927-58f5-cb5f65a5e0ec@de.ibm.com> <88d9afed-f91d-c320-13c8-9a93fc52b700@de.ibm.com> <20180625100548.64222dad.cohuck@redhat.com> Organization: Red Hat GmbH MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Mon, 25 Jun 2018 08:49:32 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Mon, 25 Jun 2018 08:49:32 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'cohuck@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 25 Jun 2018 10:36:33 +0200 Vasily Gorbik wrote: > This change has been done on purpose. Uncompressed image is not going > to be bootable any more. In future the decompressor phase would get > more function (early memory detection as an example) and there is no > chance to duplicate that code in uncompressed image as well (to keep it > bootable on its own). The patch series commit messages contain more > technical details. > > For qemu either bzImage or arch/s390/boot/compressed/vmlinux should be > used, which are bootable images. > > But that's really confusing that uncompressed vmlinux is still kind > of booting. May be we should discuss how to avoid this confusion > (may be change uncompressed image enty point to a function doing > disabled wait with badb007 or smth) and how to encourage people to use > arch/s390/boot/compressed/vmlinux instead. So, the intention is that you can't boot the uncompressed image anywhere? (Was it possible before, e.g. when punching the image under z/VM?) If yes, it would make sense to explicitly fence it. But I'm worried that it would break previously working setups (did we document the purpose of the images anywhere?)