From patchwork Fri Oct 25 12:19:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Freimann X-Patchwork-Id: 11212231 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4748E112C for ; Fri, 25 Oct 2019 12:39:16 +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 1CE2E21D71 for ; Fri, 25 Oct 2019 12:39:16 +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="VczTJXcR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1CE2E21D71 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:59432 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNys7-0000MF-9g for patchwork-qemu-devel@patchwork.kernel.org; Fri, 25 Oct 2019 08:39:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50658) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNyb6-0006K1-DB for qemu-devel@nongnu.org; Fri, 25 Oct 2019 08:21:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iNyaz-0007Pl-TF for qemu-devel@nongnu.org; Fri, 25 Oct 2019 08:21:37 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:48360 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iNyax-0007ON-19 for qemu-devel@nongnu.org; Fri, 25 Oct 2019 08:21:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1572006089; 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=/BO9oubvBmx5lDXi5nalIq0i5L3u+QPYo/gQBr7kwew=; b=VczTJXcRnXk94KsyhkN+XrUC5QMuHOLAG6Iuf+paHs6iUatBztbaAI+H9nZrCIponcx4R1 roDxdKsn11fbVHgfVvSpATITCNP8pFY6SEXJte2Wlama1cCwS5dKewIDElOYtaSiumMX9X HgKzM4g6HjMXUHIJKf54fBVpawf7QHA= 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-373-u7Q61ZRRNWerxb0hMkvDog-1; Fri, 25 Oct 2019 08:21:28 -0400 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 7C25C1800E00; Fri, 25 Oct 2019 12:21:27 +0000 (UTC) Received: from localhost (ovpn-117-235.ams2.redhat.com [10.36.117.235]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 051F250; Fri, 25 Oct 2019 12:21:18 +0000 (UTC) From: Jens Freimann To: qemu-devel@nongnu.org Subject: [PATCH v6 11/11] vfio: unplug failover primary device before migration Date: Fri, 25 Oct 2019 14:19:30 +0200 Message-Id: <20191025121930.6855-12-jfreimann@redhat.com> In-Reply-To: <20191025121930.6855-1-jfreimann@redhat.com> References: <20191025121930.6855-1-jfreimann@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-MC-Unique: u7Q61ZRRNWerxb0hMkvDog-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: pkrempa@redhat.com, berrange@redhat.com, ehabkost@redhat.com, mst@redhat.com, aadam@redhat.com, jasowang@redhat.com, dgilbert@redhat.com, armbru@redhat.com, alex.williamson@redhat.com, laine@redhat.com, ailan@redhat.com, parav@mellanox.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.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 Acked-by: Cornelia Huck --- 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" #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 **errp) return; } + if (!pdev->failover_pair_id) { + error_setg(&vdev->migration_blocker, + "VFIO device doesn't support migration"); + ret = migrate_add_blocker(vdev->migration_blocker, &err); + if (err) { + error_propagate(errp, err); + error_free(vdev->migration_blocker); + return; + } + } + vdev->vbasedev.name = g_path_get_basename(vdev->vbasedev.sysfsdev); vdev->vbasedev.ops = &vfio_pci_ops; vdev->vbasedev.type = 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); + } } 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 safest @@ -3151,11 +3171,6 @@ static Property vfio_pci_dev_properties[] = { DEFINE_PROP_END_OF_LIST(), }; -static const VMStateDescription vfio_pci_vmstate = { - .name = "vfio-pci", - .unmigratable = 1, -}; - static void vfio_pci_dev_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -3163,7 +3178,6 @@ static void vfio_pci_dev_class_init(ObjectClass *klass, void *data) dc->reset = vfio_pci_reset; dc->props = vfio_pci_dev_properties; - dc->vmsd = &vfio_pci_vmstate; dc->desc = "VFIO-based PCI device assignment"; set_bit(DEVICE_CATEGORY_MISC, dc->categories); pdc->realize = 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; uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len);