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=-2.1 required=3.0 tests=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 EED9EC2BA83 for ; Wed, 12 Feb 2020 11:41:53 +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 BA54020675 for ; Wed, 12 Feb 2020 11:41:53 +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="jMm4THOZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BA54020675 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]:36236 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1qOv-0005P4-05 for qemu-devel@archiver.kernel.org; Wed, 12 Feb 2020 06:41:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:48417) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1qOA-0004m4-1P for qemu-devel@nongnu.org; Wed, 12 Feb 2020 06:41:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j1qO8-0004Ge-7j for qemu-devel@nongnu.org; Wed, 12 Feb 2020 06:41:05 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:28663 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j1qO8-0004CM-3W for qemu-devel@nongnu.org; Wed, 12 Feb 2020 06:41:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1581507660; 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=bIQY7lOKT6IQXpxiCFIfbF6TYBXBAgWx1FpfPM7V208=; b=jMm4THOZ/E6bfV6QpAaNrnRZjbtf7DPlBAndeb/gsxOtE+ik2kJHHpQXxHc1cnauywhIfa GJrj7wzQlyGmmUHE2vD41OjsojmTYf2tc++7yVvlff0ur185Xgt96sAyBP2PkxV2M+obEC cpSoZ25PaWMPzAwqsiGsGHldNWdWgFQ= 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-426-30PX0PAOOT63pmXgHHPj4g-1; Wed, 12 Feb 2020 06:40:57 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id ECB3FDB67; Wed, 12 Feb 2020 11:40:55 +0000 (UTC) Received: from linux.fritz.box (ovpn-117-205.ams2.redhat.com [10.36.117.205]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 217CD9006B; Wed, 12 Feb 2020 11:40:51 +0000 (UTC) Date: Wed, 12 Feb 2020 12:40:50 +0100 From: Kevin Wolf To: qemu-devel@nongnu.org Subject: Re: [PATCH v4 0/4] qmp: Optionally run handlers in coroutines Message-ID: <20200212114050.GA5867@linux.fritz.box> References: <20200121181122.15941-1-kwolf@redhat.com> <20200205140034.GD5768@dhcp-200-226.str.redhat.com> MIME-Version: 1.0 In-Reply-To: <20200205140034.GD5768@dhcp-200-226.str.redhat.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: 30PX0PAOOT63pmXgHHPj4g-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 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: stefanha@redhat.com, marcandre.lureau@gmail.com, armbru@redhat.com, qemu-block@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Am 05.02.2020 um 15:00 hat Kevin Wolf geschrieben: > Am 21.01.2020 um 19:11 hat Kevin Wolf geschrieben: > > Some QMP command handlers can block the main loop for a relatively long > > time, for example because they perform some I/O. This is quite nasty. > > Allowing such handlers to run in a coroutine where they can yield (and > > therefore release the BQL) while waiting for an event such as I/O > > completion solves the problem. > >=20 > > This series adds the infrastructure to allow this and switches > > block_resize to run in a coroutine as a first example. > >=20 > > This is an alternative solution to Marc-Andr=E9's "monitor: add > > asynchronous command type" series. >=20 > Ping? Ping. Kevin