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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 DBCA2CA9EAE for ; Tue, 29 Oct 2019 12:04:17 +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 A7DED208E3 for ; Tue, 29 Oct 2019 12:04:17 +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="WPpXOgVW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A7DED208E3 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]:55872 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iPQES-0004mT-Sg for qemu-devel@archiver.kernel.org; Tue, 29 Oct 2019 08:04:16 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40802) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iPQ2C-0006pH-QB for qemu-devel@nongnu.org; Tue, 29 Oct 2019 07:51:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iPQ2B-0002yN-8L for qemu-devel@nongnu.org; Tue, 29 Oct 2019 07:51:36 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:32471 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 1iPQ2B-0002xe-4O for qemu-devel@nongnu.org; Tue, 29 Oct 2019 07:51:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1572349894; 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=UWf0zdjO0E7lJ9R9OW9s3/uuO8in7cAS1tl9L++vf58=; b=WPpXOgVWU2nVdKxRhVBtjsnuf6EBL8XM1NYGo9uPD6bIa3Lu0ET476EolNW0tgBx+JFvqd pRaFU4kcmEeKUxOVuhiVCbM+FIzul/cv8Omskw0uv7jHkAvJJeZkM9V/OzIw3B9OWq6Q7y wmc4KVXVSIGgK+0DMIvhATPm1GmE0Pc= 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-312-WcKRz_tEP-evMcr7DQVemA-1; Tue, 29 Oct 2019 07:51:33 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6600E476; Tue, 29 Oct 2019 11:51:32 +0000 (UTC) Received: from localhost (ovpn-116-231.ams2.redhat.com [10.36.116.231]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2EABE5D6C3; Tue, 29 Oct 2019 11:51:23 +0000 (UTC) From: Jens Freimann To: qemu-devel@nongnu.org Subject: [PATCH v7 11/11] vfio: unplug failover primary device before migration Date: Tue, 29 Oct 2019 12:49:05 +0100 Message-Id: <20191029114905.6856-12-jfreimann@redhat.com> In-Reply-To: <20191029114905.6856-1-jfreimann@redhat.com> References: <20191029114905.6856-1-jfreimann@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-MC-Unique: WcKRz_tEP-evMcr7DQVemA-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] 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: berrange@redhat.com, ehabkost@redhat.com, mst@redhat.com, aadam@redhat.com, jasowang@redhat.com, quintela@redhat.com, dgilbert@redhat.com, armbru@redhat.com, alex.williamson@redhat.com, laine@redhat.com, pbonzini@redhat.com, ailan@redhat.com, parav@mellanox.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" As usual block all vfio-pci devices from being migrated, but make an exception for failover primary devices. This is achieved by setting unmigratable to 0 but also add a migration blocker for all vfio-pci devices except failover primary devices. These will be unplugged before migration happens by the migration handler of the corresponding virtio-net standby device. Signed-off-by: Jens Freimann Acked-by: Alex Williamson --- hw/vfio/pci.c | 26 ++++++++++++++++++++------ hw/vfio/pci.h | 1 + 2 files changed, 21 insertions(+), 6 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 12fac39804..e6569a7968 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -40,6 +40,7 @@ #include "pci.h" #include "trace.h" #include "qapi/error.h" +#include "migration/blocker.h" =20 #define TYPE_VFIO_PCI "vfio-pci" #define PCI_VFIO(obj) OBJECT_CHECK(VFIOPCIDevice, obj, TYPE_VFIO_PCI) @@ -2732,6 +2733,17 @@ static void vfio_realize(PCIDevice *pdev, Error **er= rp) return; } =20 + if (!pdev->failover_pair_id) { + error_setg(&vdev->migration_blocker, + "VFIO device doesn't support migration"); + ret =3D migrate_add_blocker(vdev->migration_blocker, &err); + if (err) { + error_propagate(errp, err); + error_free(vdev->migration_blocker); + return; + } + } + vdev->vbasedev.name =3D g_path_get_basename(vdev->vbasedev.sysfsdev); vdev->vbasedev.ops =3D &vfio_pci_ops; vdev->vbasedev.type =3D VFIO_DEVICE_TYPE_PCI; @@ -3008,6 +3020,10 @@ out_teardown: vfio_bars_exit(vdev); error: error_prepend(errp, VFIO_MSG_PREFIX, vdev->vbasedev.name); + if (vdev->migration_blocker) { + migrate_del_blocker(vdev->migration_blocker); + error_free(vdev->migration_blocker); + } } =20 static void vfio_instance_finalize(Object *obj) @@ -3019,6 +3035,10 @@ static void vfio_instance_finalize(Object *obj) vfio_bars_finalize(vdev); g_free(vdev->emulated_config_bits); g_free(vdev->rom); + if (vdev->migration_blocker) { + migrate_del_blocker(vdev->migration_blocker); + error_free(vdev->migration_blocker); + } /* * XXX Leaking igd_opregion is not an oversight, we can't remove the * fw_cfg entry therefore leaking this allocation seems like the safes= t @@ -3151,11 +3171,6 @@ static Property vfio_pci_dev_properties[] =3D { DEFINE_PROP_END_OF_LIST(), }; =20 -static const VMStateDescription vfio_pci_vmstate =3D { - .name =3D "vfio-pci", - .unmigratable =3D 1, -}; - static void vfio_pci_dev_class_init(ObjectClass *klass, void *data) { DeviceClass *dc =3D DEVICE_CLASS(klass); @@ -3163,7 +3178,6 @@ static void vfio_pci_dev_class_init(ObjectClass *klas= s, void *data) =20 dc->reset =3D vfio_pci_reset; dc->props =3D vfio_pci_dev_properties; - dc->vmsd =3D &vfio_pci_vmstate; dc->desc =3D "VFIO-based PCI device assignment"; set_bit(DEVICE_CATEGORY_MISC, dc->categories); pdc->realize =3D vfio_realize; diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h index 834a90d646..b329d50338 100644 --- a/hw/vfio/pci.h +++ b/hw/vfio/pci.h @@ -168,6 +168,7 @@ typedef struct VFIOPCIDevice { bool no_vfio_ioeventfd; bool enable_ramfb; VFIODisplay *dpy; + Error *migration_blocker; } VFIOPCIDevice; =20 uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len); --=20 2.21.0