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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id B5CA9C4345F for ; Wed, 24 Apr 2024 12:06:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rzbNR-0005Uu-Vy; Wed, 24 Apr 2024 08:05:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rzbNC-0005Sz-F9 for qemu-devel@nongnu.org; Wed, 24 Apr 2024 08:05:19 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rzbN9-0007k7-9u for qemu-devel@nongnu.org; Wed, 24 Apr 2024 08:05:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1713960308; 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=iVrYGxGITgZAFY6HD+X1tBO3SRfHgsn7badY2DEhpDg=; b=JqbUcttNY5GwiB7Bd4txd3x+XbftEA6QQAjhPS0A31CEHjVwrNyrDzzoECTVPa3MOfm2CD AMQxNy58bBig1QCSP4QTwoMXmO5EP04I/Gz+ysobkUM15m20BULPz+j6VJ74JynmWgm4Jk z5NQ2s6ibKiklnO8bhcGJEt8Lica0JQ= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-592-y4sIrR3vMDmJHjd237aVUA-1; Wed, 24 Apr 2024 08:05:06 -0400 X-MC-Unique: y4sIrR3vMDmJHjd237aVUA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (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 mimecast-mx02.redhat.com (Postfix) with ESMTPS id 34FD629AC016; Wed, 24 Apr 2024 12:05:06 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.192.247]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E388B1C060D0; Wed, 24 Apr 2024 12:05:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 8BB5621E6680; Wed, 24 Apr 2024 14:05:04 +0200 (CEST) From: Markus Armbruster To: Vladimir Sementsov-Ogievskiy Cc: qemu-block@nongnu.org, raphael@enfabrica.net, mst@redhat.com, kwolf@redhat.com, hreitz@redhat.com, pbonzini@redhat.com, berrange@redhat.com, eduardo@habkost.net, armbru@redhat.com, dave@treblig.org, eblake@redhat.com, qemu-devel@nongnu.org, yc-core@yandex-team.ru Subject: Re: [PATCH v3 4/5] qapi: introduce device-sync-config In-Reply-To: <20240329183758.3360733-5-vsementsov@yandex-team.ru> (Vladimir Sementsov-Ogievskiy's message of "Fri, 29 Mar 2024 21:37:57 +0300") References: <20240329183758.3360733-1-vsementsov@yandex-team.ru> <20240329183758.3360733-5-vsementsov@yandex-team.ru> Date: Wed, 24 Apr 2024 14:05:04 +0200 Message-ID: <87bk5zvudr.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.668, 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=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Vladimir Sementsov-Ogievskiy writes: > Add command to sync config from vhost-user backend to the device. It > may be helpful when VHOST_USER_SLAVE_CONFIG_CHANGE_MSG failed or not > triggered interrupt to the guest or just not available (not supported > by vhost-user server). > > Command result is racy if allow it during migration. Let's allow the > sync only in RUNNING state. > > Signed-off-by: Vladimir Sementsov-Ogievskiy [...] > diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h > index 9228e96c87..87135bdcdf 100644 > --- a/include/hw/qdev-core.h > +++ b/include/hw/qdev-core.h > @@ -95,6 +95,7 @@ typedef void (*DeviceUnrealize)(DeviceState *dev); > typedef void (*DeviceReset)(DeviceState *dev); > typedef void (*BusRealize)(BusState *bus, Error **errp); > typedef void (*BusUnrealize)(BusState *bus); > +typedef int (*DeviceSyncConfig)(DeviceState *dev, Error **errp); > > /** > * struct DeviceClass - The base class for all devices. > @@ -162,6 +163,7 @@ struct DeviceClass { > DeviceReset reset; > DeviceRealize realize; > DeviceUnrealize unrealize; > + DeviceSyncConfig sync_config; I get include/hw/qdev-core.h:179: warning: Function parameter or member 'sync_config' not described in 'DeviceClass' To fix this, cover the new member in the doc comment. > > /** > * @vmsd: device state serialisation description for [...]