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=-8.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 77054C43464 for ; Mon, 21 Sep 2020 12:03:04 +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 DB4C6214F1 for ; Mon, 21 Sep 2020 12:03:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZSDNd1eD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DB4C6214F1 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 ([::1]:46498 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kKKX8-00031T-R9 for qemu-devel@archiver.kernel.org; Mon, 21 Sep 2020 08:03:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50818) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kKKWF-0002Y4-D5 for qemu-devel@nongnu.org; Mon, 21 Sep 2020 08:02:07 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:45541) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kKKWC-0005De-5N for qemu-devel@nongnu.org; Mon, 21 Sep 2020 08:02:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600689722; 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: in-reply-to:in-reply-to:references:references; bh=xeiBwT1v+hEcbIfIHCoGmCcObKwEzhD0CtqmONFtLuE=; b=ZSDNd1eDA773DmSodnId13Y4QO5ZZPqrxZfOzPdKcnOaxIPqvfvAYWnIVMbex0L29D3+A0 iqwFK3AgF1/kbrIFR9y3+KF3EJ/nnd+91g4zxri4EnQRoje2xzKiv3RnRID02lqgbAjglF CNjnvZ4R4a+FSilyqL4iOM7vZEMaMD8= 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-140-FdD3GEO-NZu0gqftxv_fGw-1; Mon, 21 Sep 2020 08:01:57 -0400 X-MC-Unique: FdD3GEO-NZu0gqftxv_fGw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8E33CCD062; Mon, 21 Sep 2020 12:01:55 +0000 (UTC) Received: from localhost (ovpn-112-51.ams2.redhat.com [10.36.112.51]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0F3635D9D5; Mon, 21 Sep 2020 12:01:54 +0000 (UTC) Date: Mon, 21 Sep 2020 13:01:54 +0100 From: "Richard W.M. Jones" To: Eric Blake Subject: Re: [PATCH v5 1/8] qemu-options: New -compat to set policy for deprecated interfaces Message-ID: <20200921120154.GA27434@redhat.com> References: <20200914084802.4185028-1-armbru@redhat.com> <20200914084802.4185028-2-armbru@redhat.com> MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 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=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=63.128.21.124; envelope-from=rjones@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/21 01:44:53 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.455, 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_H5=0.001, RCVD_IN_MSPIKE_WL=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: mdroth@linux.vnet.ibm.com, marcandre.lureau@gmail.com, Markus Armbruster , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, Sep 14, 2020 at 10:08:50AM -0500, Eric Blake wrote: > On 9/14/20 3:47 AM, Markus Armbruster wrote: > >Policy is separate for input and output. > > > >Input policy can be "accept" (accept silently), or "reject" (reject > >the request with an error). > > > >Output policy can be "accept" (pass on unchanged), or "hide" (filter > >out the deprecated parts). > > > >Default is "accept". Policies other than "accept" are implemented > >later in this series. > > > >For now, -compat covers only syntactic aspects of QMP, i.e. stuff > >tagged with feature 'deprecated'. We may want to extend it to cover > >semantic aspects, CLI, and experimental features. > > > >The option is experimental. > > > >Signed-off-by: Markus Armbruster > >--- > > Reviewed-by: Eric Blake > > But as Peter points out, where is the introspection for whether this > command line argument exists? FWIW libguestfs still tests some qemu features by grepping -help output. That's actually what I'm intending to do with this one, at least for now. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW