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 lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (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 4CCFACA600E for ; Thu, 8 Oct 2026 09:43:02 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1xEkdt-0004Do-PF; Thu, 08 Oct 2026 05:42:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1xEkdr-0004DX-FK for qemu-devel@nongnu.org; Thu, 08 Oct 2026 05:42:23 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1xEkdp-0004rq-Bl for qemu-devel@nongnu.org; Thu, 08 Oct 2026 05:42:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1791452540; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references; bh=PUKch78Lnna0aki2M/M0N5Gqy+cjIQfMGQ8mftW+JnY=; b=Pisw2HLv7dkVtzl3UC361XDqUKleUfE5fl60vdap2HSyu9kTXpV0LlHxA91QLvsnZUhFhg q79Ek9xJ9sk5RO2PWZwVaHzBeiNLCMJavGOW1FfK6TH3Ic1Fy9ir53/6jxU4E9740lOwlh 5qSk6EADWP3iOJgZ4n2BTttdLYi/oZM= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-135-zWiuXf2KOBqbcpH0MDW1lw-1; Thu, 8 Oct 2026 09:42:16 +0000 X-MC-Unique: zWiuXf2KOBqbcpH0MDW1lw-1 X-Mimecast-MFC-AGG-ID: zWiuXf2KOBqbcpH0MDW1lw_1791452534 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3CF851955DAD; Thu, 8 Oct 2026 09:42:13 +0000 (UTC) Received: from redhat.com (headnet04.pony-001.prod.iad2.dc.redhat.com [10.2.32.116]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 12EA830001BB; Thu, 8 Oct 2026 09:42:06 +0000 (UTC) Date: Thu, 8 Oct 2026 10:42:04 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Pierrick Bouvier Cc: Yonggang Luo , qemu-devel@nongnu.org, Cleber Rosa , Stefan Hajnoczi , =?utf-8?Q?C=C3=A9dric?= Le Goater , Laurent Vivier , Zhao Liu , John Snow , Laurent Vivier , Richard Henderson , Joel Stanley , Fabiano Rosas , Kane Chen , Andrew Jeffery , Troy Lee , Jamin Lin , Stafford Horne , qemu-arm@nongnu.org, Philippe Mathieu-Daude , Peter Maydell , Paolo Bonzini , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= , =?utf-8?Q?Marc-Andr=C3=A9?= Lureau , Steven Lee , Alexander Bulekov , Darren Kenny Subject: Re: [PATCH 0/8] qom: pass TargetInfo to the is_available callback Message-ID: References: <20261007115253.328-1-luoyonggang@gmail.com> <2390b3d7-6918-41e3-8532-c19de4cdd1ff@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <2390b3d7-6918-41e3-8532-c19de4cdd1ff@oss.qualcomm.com> User-Agent: Mutt/2.4.2 (2026-08-30) X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 10 X-Spam_score: 1.0 X-Spam_bar: + X-Spam_report: (1.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.24, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Wed, Oct 07, 2026 at 01:25:46PM -0700, Pierrick Bouvier wrote: > On 10/7/2026 4:47 AM, Yonggang Luo wrote: > > This allows a combined binary to register machine types from all its targets. > > Consequently, QMP `query-machines` can return machine entries from every > > target, even when `none` is selected. For example, a client can query the > > combined machine list with: > > > > ```json > > { "execute": "query-machines" } > > ``` > > > > The returned list includes the registered machine classes from all linked > > targets. This is separate from selecting a machine: with `-target none`, > > `-M virt` reports the targets that provide `virt` instead of choosing one > > arbitrarily: > > > > ```text > > qemu-system -target none -M virt > > unsupported machine type: "virt" for target "none" > > Available for targets: > > aarch64 > > arm > > ``` > > > > From the long conversation on a previous thread, I thought we reached > the conclusion that if we didn't expose any ambiguous name, then -target > option is unnecessary, or maybe I got lost on track of this thread. > > https://lore.kernel.org/qemu-devel/ar_coT44h5-zJPVV@redhat.com/ > > I'm not sure which semantic we want to have with -target none. If there > is no ambiguous name registered, we just don't need it at all. It's a > win-win IMHO. Yes, if we expose unique names for every machine, then -target is then redundant. With regards, Daniel -- |: https://berrange.com ~~ https://hachyderm.io/@berrange :| |: https://libvirt.org ~~ https://entangle-photo.org :| |: https://pixelfed.art/berrange ~~ https://fstop138.berrange.com :|