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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 B9909C433C1 for ; Tue, 30 Mar 2021 19:36:03 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3A65161994 for ; Tue, 30 Mar 2021 19:36:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3A65161994 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=m5p.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.103669.197725 (Exim 4.92) (envelope-from ) id 1lRK9O-0006QQ-ED; Tue, 30 Mar 2021 19:35:42 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 103669.197725; Tue, 30 Mar 2021 19:35:42 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lRK9O-0006QJ-B7; Tue, 30 Mar 2021 19:35:42 +0000 Received: by outflank-mailman (input) for mailman id 103669; Tue, 30 Mar 2021 19:35:41 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lRK9N-0006QE-4K for xen-devel@lists.xenproject.org; Tue, 30 Mar 2021 19:35:41 +0000 Received: from mailhost.m5p.com (unknown [74.104.188.4]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 65148cdc-d458-4413-9359-6ae120513760; Tue, 30 Mar 2021 19:35:39 +0000 (UTC) Received: from m5p.com (mailhost.m5p.com [IPv6:2001:470:1f07:15ff:0:0:0:f7]) by mailhost.m5p.com (8.16.1/8.15.2) with ESMTPS id 12UJZTJV017133 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Tue, 30 Mar 2021 15:35:34 -0400 (EDT) (envelope-from ehem@m5p.com) Received: (from ehem@localhost) by m5p.com (8.16.1/8.15.2/Submit) id 12UJZSEL017132; Tue, 30 Mar 2021 12:35:28 -0700 (PDT) (envelope-from ehem) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 65148cdc-d458-4413-9359-6ae120513760 Date: Tue, 30 Mar 2021 12:35:28 -0700 From: Elliott Mitchell To: Roman Shaposhnik Cc: Xen-devel Subject: Re: multiboot2 and module2 boot issues via GRUB2 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Mar 30, 2021 at 11:28:49AM -0700, Roman Shaposhnik wrote: > seems like I've run into an issue with multiboot2 and module2 > commands that I can't quite explain. Since it may be something > super simply and silly -- I wanted to reach out here before I do > a GRUB/Xen/LK source deepdive. > > So here's the deal: whenever I boot straight up Linux kernel > I can do the following sequence of commands: > linux /kernel > initrd foo.cpio.gz bar.cpio.gz > and have linux kernel effectively stack content of bar.cpio.gz > on top of foo.cpio.gz and present a unified initramfs that way. > > I'm trying to replicate it with Xen, but: > multiboot2 /boot/xen.gz > module2 /kernel > module2 foo.cpio.gz > module2 bar.cpio.gz > only seems to be picking up foo.cpio.gz > > Has anyone run into this issue before? Not I, but I asked questions elsewhere before I fought this battle. You should get a more recent version of GRUB. More recent versions of GRUB (2.04) on ARM have the "xen_hypervisor" boot mode. With this boot mode the kernel and initrd get passed via xen_module command. Apparently newer GRUB versions have better boot methods for Xen, so updating would be a Good Idea, if that is viable for you. -- (\___(\___(\______ --=> 8-) EHM <=-- ______/)___/)___/) \BS ( | ehem+sigmsg@m5p.com PGP 87145445 | ) / \_CS\ | _____ -O #include O- _____ | / _/ 8A19\___\_|_/58D2 7E3D DDF4 7BA6 <-PGP-> 41D1 B375 37D0 8714\_|_/___/5445