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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,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 51D44C282DD for ; Thu, 23 May 2019 11:42:41 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1E8C020851 for ; Thu, 23 May 2019 11:42:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1E8C020851 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:34179 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hTm7M-0008Uh-Ah for qemu-devel@archiver.kernel.org; Thu, 23 May 2019 07:42:40 -0400 Received: from eggs.gnu.org ([209.51.188.92]:36469) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hTm30-0004um-FT for qemu-devel@nongnu.org; Thu, 23 May 2019 07:38:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hTlwE-00033u-Sl for qemu-devel@nongnu.org; Thu, 23 May 2019 07:31:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34906) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hTlwE-00033K-O5 for qemu-devel@nongnu.org; Thu, 23 May 2019 07:31:10 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A9761F74B5; Thu, 23 May 2019 11:31:06 +0000 (UTC) Received: from lacos-laptop-7.usersys.redhat.com (ovpn-120-6.rdu2.redhat.com [10.10.120.6]) by smtp.corp.redhat.com (Postfix) with ESMTP id AE892620D2; Thu, 23 May 2019 11:30:58 +0000 (UTC) To: Peter Maydell References: <20190520231008.20140-1-mst@redhat.com> <20190521092553-mutt-send-email-mst@kernel.org> <20190522150642.3da34e6b@redhat.com> <4b230fb0-ae2c-5221-39cb-1bed7b6df8d0@redhat.com> From: Laszlo Ersek Message-ID: Date: Thu, 23 May 2019 13:30:56 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Thu, 23 May 2019 11:31:06 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PULL v2 00/36] pci, pc, virtio: features, fixes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Igor Mammedov , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , QEMU Developers , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi Peter, On 05/22/19 23:15, Peter Maydell wrote: > On Wed, 22 May 2019 at 15:22, Laszlo Ersek wrote: >> This is very interesting. I had obviously tested booting >> "bios-tables-test.aarch64.iso.qcow2" against "edk2-aarch64-code.fd", >> using TCG, on my x86_64 laptop. (And, I've run the above exact command >> just now, at commit a4f667b67149 -- it works 100% fine.) >> >> However, I've never been *near* a 32-bit ARM host. Therefore my >> suspicion is that the AARCH64 UEFI guest code tickles something in the >> 32-bit ARM code generator. It could be a bug in 32-bit ARM TCG, or it >> could be a bug in edk2 that is exposed by 32-bit ARM TCG. > > Does it repro in a 32-bit-chroot in an aarch64 host ? > I don't know if that might be easier for you to set up than > getting access to real 32-bit hardware. If this test is still necessary (e.g. for repeated testing), I might be able to run qemu-system-aarch64/TCG in a 32-bit QEMU/KVM guest on my Mustang. I was preparing to set up this kind of nesting, when Igor gave me access to a real aarch32 host. Thanks Laszlo