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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 CA539C12002 for ; Wed, 21 Jul 2021 09:33:22 +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 6E1EF611CE for ; Wed, 21 Jul 2021 09:33:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6E1EF611CE 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]:39340 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m68bR-0007pV-Hw for qemu-devel@archiver.kernel.org; Wed, 21 Jul 2021 05:33:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41852) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m68Y6-00037z-VI for qemu-devel@nongnu.org; Wed, 21 Jul 2021 05:29:55 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:24752) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m68Y5-0003ED-D9 for qemu-devel@nongnu.org; Wed, 21 Jul 2021 05:29:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626859792; 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; bh=dycnHQf7h8SdEIxMNLsLgEUsPh/ewb06CrWUcZ1/B5U=; b=a5hM7oDdZYozAn4I3BHiAwFWmH9mBvVQZ2PVpcnmR3V6etPVEvKqFMgGfShvjrKi+Ew2PU lEoNwudBzJhJLcoy992NicnFswD3jMykkMgb8PLDBwcbE69kzKdptd0rejRNE5gV4152xp i0UwWaZa5swgNRrdY6FIO1a782rHv1I= 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-435-_RtlnjivPRSBF2ydN6wyNg-1; Wed, 21 Jul 2021 05:29:51 -0400 X-MC-Unique: _RtlnjivPRSBF2ydN6wyNg-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 859EB107B031 for ; Wed, 21 Jul 2021 09:29:50 +0000 (UTC) Received: from thinkpad.redhat.com (ovpn-114-87.ams2.redhat.com [10.36.114.87]) by smtp.corp.redhat.com (Postfix) with ESMTP id 51C951017CE8; Wed, 21 Jul 2021 09:29:41 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PATCH v2] failover: unregister ROM on unplug Date: Wed, 21 Jul 2021 11:29:40 +0200 Message-Id: <20210721092940.225010-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lvivier@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=216.205.24.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.474, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, 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: Juan Quintela , Jason Wang , "Michael S. Tsirkin" , "Dr . David Alan Gilbert" , Igor Mammedov , Jens Freimann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The intend of failover is to allow to migrate a VM with a VFIO networking card without disrupting the network operation by switching to a virtio-net device during the migration. This simple change allows to test failover with a simulated device like e1000e rather than a vfio device, even if it's useless in real life it can help to debug failover. This is interesting to developers that want to test failover on a system with no vfio device. Moreover it simplifies host networking configuration as we can use the same bridge for virtio-net and the other failover networking device. Without this change the migration of a system configured with failover fails with: ... -device virtio-net-pci,id=virtionet0,failover=on,... \ -device e1000,failover_pair_id=virtionet0,... \ ... (qemu) migrate ... Unknown ramblock "0000:00:01.1:00.0/e1000e.rom", cannot accept migration error while loading state for instance 0x0 of device 'ram' load of migration failed: Invalid argument This happens because QEMU correctly unregisters the interface vmstate but not the ROM one. This patch fixes that. Signed-off-by: Laurent Vivier --- Notes: v2: reset has_rom to false update commit log message hw/net/virtio-net.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 16d20cdee52a..b75794c2447a 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3256,6 +3256,10 @@ static void virtio_net_handle_migration_primary(VirtIONet *n, MigrationState *s) if (migration_in_setup(s) && !should_be_hidden) { if (failover_unplug_primary(n, dev)) { vmstate_unregister(VMSTATE_IF(dev), qdev_get_vmsd(dev), dev); + if (PCI_DEVICE(dev)->has_rom) { + PCI_DEVICE(dev)->has_rom = false; + vmstate_unregister_ram(&PCI_DEVICE(dev)->rom , dev); + } qapi_event_send_unplug_primary(dev->id); qatomic_set(&n->failover_primary_hidden, true); } else { -- 2.31.1