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=-5.0 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 44A78C433EF for ; Wed, 8 Sep 2021 16:34:59 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 09A0661139 for ; Wed, 8 Sep 2021 16:34:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 09A0661139 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:52002 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mO0XK-0007uu-A1 for qemu-devel@archiver.kernel.org; Wed, 08 Sep 2021 12:34:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49882) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mO0WS-0006XR-Q4 for qemu-devel@nongnu.org; Wed, 08 Sep 2021 12:34:04 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:45108) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mO0WQ-0005v2-GC for qemu-devel@nongnu.org; Wed, 08 Sep 2021 12:34:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1631118841; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AqAaHj+Qw9fJIDXO5aJpTzl5OOHAidl95tsS+U6GcwA=; b=KUMtkKJwq7AYUE03EjGY/V+ZQUufMf0dKsmMzHmV/AXeGqcgA7AFYbPHCjuM/klaUy3uUs K6Qf6sZd1jXLwCXVuGLIui/NuqcNjmBXuYuPsopDPZQ53rrfBeDDpNFqqX2KHv6dqJPAfE tcvaRxO3oRDCwOu5wRP/L4cKGt6CBKw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-495-AN4dBfQFO_iml7x7hwq3GA-1; Wed, 08 Sep 2021 12:33:58 -0400 X-MC-Unique: AN4dBfQFO_iml7x7hwq3GA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CD7A09F92A for ; Wed, 8 Sep 2021 16:33:57 +0000 (UTC) Received: from localhost (unknown [10.39.192.185]) by smtp.corp.redhat.com (Postfix) with ESMTP id B0E3060C04; Wed, 8 Sep 2021 16:33:53 +0000 (UTC) Date: Wed, 8 Sep 2021 17:33:52 +0100 From: "Richard W.M. Jones" To: Daniel =?iso-8859-1?Q?P=2E_Berrang=E9?= Subject: Re: Compatibility between -device sga and -machine graphics=off Message-ID: <20210908163352.GA12952@redhat.com> References: MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=rjones@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=rjones@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.393, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , Gerd Hoffmann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Just commenting from the libguestfs POV: We don't care about migration, and: On Wed, Sep 08, 2021 at 05:08:08PM +0100, Daniel P. Berrangé wrote: > On non-x86 emulators I see graphics=off has semantic effects beyond > just controlling whether the firmware prints to the serial or not > though. IOW it is overloaded to do multiple jobs, while -device sga > only did one specific job. This makes graphics=off somewhat undesirable > to use. We're possibly lucky in this specific case though, because > the 'sgabios.bin' ROM is x86 asm code, so was never valid to use in > the non-x86 case. we only enable on i686 & x86-64. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org