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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 559D4C5519F for ; Wed, 18 Nov 2020 11:32:56 +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 A974320872 for ; Wed, 18 Nov 2020 11:32:55 +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="PfrS4O1O" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A974320872 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]:44552 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kfLhm-00085F-HQ for qemu-devel@archiver.kernel.org; Wed, 18 Nov 2020 06:32:54 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:38488) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kfLdv-0003O9-Lh for qemu-devel@nongnu.org; Wed, 18 Nov 2020 06:28:55 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:27482) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kfLds-0004KF-Lz for qemu-devel@nongnu.org; Wed, 18 Nov 2020 06:28:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605698931; 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=mJgshEUIW99Tsl2vT6eo50usERexIvH1LzQeyXSsUHQ=; b=PfrS4O1O/RfYPex03qxFy9xybIJnXkapvFNAZtl1/okH7E0KzCgBs/oylgyLS30P20hKMB ZFwnfUKqiTKEx3p7ge1303e6ZwD9l6BAEeHeS7iw88MR764DYZ9i3UQ0yoZa3mvos71gFt bby2Ag1ffGA7Jx56HHHY4mjoWcWk19w= 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-426-trULShYKOAi6f3GVmW12pA-1; Wed, 18 Nov 2020 06:28:49 -0500 X-MC-Unique: trULShYKOAi6f3GVmW12pA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5FEF41007B09; Wed, 18 Nov 2020 11:28:48 +0000 (UTC) Received: from merkur.fritz.box (ovpn-115-43.ams2.redhat.com [10.36.115.43]) by smtp.corp.redhat.com (Postfix) with ESMTPS id DC175196FB; Wed, 18 Nov 2020 11:28:46 +0000 (UTC) Date: Wed, 18 Nov 2020 12:28:45 +0100 From: Kevin Wolf To: Markus Armbruster Subject: Re: [PATCH for-6.0 1/6] qapi: Add query-accel command Message-ID: <20201118112845.GA11988@merkur.fritz.box> References: <20201116131011.26607-1-r.bolshakov@yadro.com> <20201116131011.26607-2-r.bolshakov@yadro.com> <2d934855-ad11-9f61-28a1-7c0a35347a66@redhat.com> <20201116211352.GC1235237@habkost.net> <87mtzgbc29.fsf@dusky.pond.sub.org> <20201118011917.GB10041@SPB-NB-133.local> <87ft57oycu.fsf@dusky.pond.sub.org> MIME-Version: 1.0 In-Reply-To: <87ft57oycu.fsf@dusky.pond.sub.org> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@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=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/17 19:41:43 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_H4=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: "Daniel P. Berrange" , Eduardo Habkost , qemu-devel@nongnu.org, Roman Bolshakov , Paolo Bonzini , John Snow Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Am 18.11.2020 um 09:36 hat Markus Armbruster geschrieben: > >> >> [...] Even better would be > >> >> returning an array of KvmInfo with information on all supported > >> >> accelerators at once, rather than making the user call this command once > >> >> per name. > >> > > >> > Maybe. It would save us the work of answering the question > >> > above, but is this (querying information for all accelerators at > >> > once) going to be a common use case? > >> > >> I recommend to scratch the query-accel parameter, and return information > >> on all accelerators in this build of QEMU. Simple, and consistent with > >> similar ad hoc queries. If a client is interested in just one, fishing > >> it out of the list is easy enough. > >> > > > > Works for me. I'll then leave KvmInfo as is and will introduce AccelInfo > > with two fields: name and enabled. enabled will be true only for > > currently active accelerator. > > Please document that at most on result can have 'enabled': true. This doesn't feel right. If I understand right, the proposal is to get a result like this: [ { 'name': 'kvm', 'enabled': true }, { 'name': 'tcg', 'enabled': false }, { 'name': 'xen', 'enabled': false } ] The condition that only one field can be enabled would only be in the documentation instead of being enforced. Instead, consider a response like this: { 'available': [ 'kvm', 'tcg', 'xen' ], 'active': 'kvm' } This is not only shorter, but also makes sure that only one accelerator can be reported as active. Kevin