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=-5.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,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 6A65AC433E0 for ; Wed, 3 Jun 2020 11:44:24 +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 37B4C20674 for ; Wed, 3 Jun 2020 11:44:24 +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="A/2vngHo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37B4C20674 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]:38104 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jgRol-0001rw-Fc for qemu-devel@archiver.kernel.org; Wed, 03 Jun 2020 07:44:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37582) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jgRnu-00012t-Ow for qemu-devel@nongnu.org; Wed, 03 Jun 2020 07:43:30 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:58667 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jgRns-0001yW-Ur for qemu-devel@nongnu.org; Wed, 03 Jun 2020 07:43:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1591184608; 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=yvCa3ge67KFMKLvFZUxuQfIde6OmcCj1N6YrERrqyLo=; b=A/2vngHo/Wz4e2OR34TR04IrVLM8ukzdPqN+EnsjUmEP91BTFCg3VdpevlD+UQ9svNgQ9d vuDdKWG446XLlB2blO4RK4oyFv1E0N3QhiDniX9MlvrDJcCtAF++WYZQm3saJXOqUSwlrr VNYwl0giflEy/3UGEURGtWGTQh71VY8= 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-392-obD5m47ZMF2ZcsCw2RSezQ-1; Wed, 03 Jun 2020 07:43:24 -0400 X-MC-Unique: obD5m47ZMF2ZcsCw2RSezQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0993B56B39; Wed, 3 Jun 2020 11:43:22 +0000 (UTC) Received: from work-vm (ovpn-115-9.ams2.redhat.com [10.36.115.9]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0A3C610013D7; Wed, 3 Jun 2020 11:43:19 +0000 (UTC) Date: Wed, 3 Jun 2020 12:43:17 +0100 From: "Dr. David Alan Gilbert" To: David Hildenbrand Subject: Re: [PULL 04/12] hmp: Simplify qom-set Message-ID: <20200603114317.GD2974@work-vm> References: <20200601184004.272784-1-dgilbert@redhat.com> <20200601184004.272784-5-dgilbert@redhat.com> <87pnai7ymz.fsf@dusky.pond.sub.org> <20200602092601.GD2758@work-vm> <847cb8b5-1507-46cf-495a-952d41a3c2b2@redhat.com> <20200603104306.GC2974@work-vm> <457c1ac7-3281-5e98-481b-34d44e5174de@redhat.com> MIME-Version: 1.0 In-Reply-To: <457c1ac7-3281-5e98-481b-34d44e5174de@redhat.com> User-Agent: Mutt/1.13.4 (2020-02-15) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Disposition: inline Received-SPF: pass client-ip=205.139.110.61; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/03 01:04:34 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, 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, SPF_PASS=-0.001, T_HK_NAME_DR=0.01 autolearn=_AUTOLEARN 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: mszeredi@redhat.com, lukasstraub2@web.de, quintela@redhat.com, qemu-devel@nongnu.org, pannengyuan@huawei.com, f4bug@amsat.org, Markus Armbruster , stefanha@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * David Hildenbrand (david@redhat.com) wrote: > On 03.06.20 12:43, Dr. David Alan Gilbert wrote: > > * David Hildenbrand (david@redhat.com) wrote: > >> On 02.06.20 11:26, Dr. David Alan Gilbert wrote: > >>> * Markus Armbruster (armbru@redhat.com) wrote: > >>>> "Dr. David Alan Gilbert (git)" writes: > >>>> > >>>>> From: "Dr. David Alan Gilbert" > >>>>> > >>>>> Simplify qom_set by making it use qmp_qom_set and the JSON parser. > >>>>> > >>>>> (qemu) qom-get /machine smm > >>>>> "auto" > >>>>> (qemu) qom-set /machine smm "auto" > >>>>> > >>>>> Signed-off-by: Dr. David Alan Gilbert > >>>>> Message-Id: <20200520151108.160598-3-dgilbert@redhat.com> > >>>>> Reviewed-by: Philippe Mathieu-Daudé > >>>>> Reviewed-by: Markus Armbruster > >>>>> Signed-off-by: Dr. David Alan Gilbert > >>>>> With 's'->'S' type change suggested by Paolo and Markus > >>>> > >>>> This is actually more than just simplification, it's disarming a bear > >>>> trap: the string visitor is restricted to a subset of the QAPI types, > >>>> and when you qom-set a property with a type it can't handle, QEMU > >>>> aborts. I mentioned this in the discussion of possible ways out of the > >>>> qom-get impasse, but missed reraising it in patch review. > >>>> > >>>> A suitably amended commit would be nice, but respinning the PR just for > >>>> that may not be worthwhile. > >>> > >>> A bit late; still as long as we're removing bear traps not adding them. > >> > >> This breaks qom-set for my (virtio-mem) use case: > >> > >> echo "qom-set vm0 requested-size 300M" | sudo nc -U /var/tmp/mon_src > >> QEMU 5.0.50 monitor - type 'help' for more information > >> (qemu) qom-set vm0 requested-size 300M > >> Error: Expecting at most one JSON value > > > > Does qom-set vm0 requested-size 300e6 do the same thing? > > The property is defined to be of type "size". > > (qemu) qom-set vm0 requested-size 300e6 > Error: Parameter 'requested-size' expects uint64 > > (not sure how "size" and "uint64" are mapped here) I think the problem here is that the JSON parser is converting anything with an 'e' as a float; JSON itself doesn't have the distinction between int and float. Dave > > -- > Thanks, > > David / dhildenb -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK