From patchwork Tue Jun 18 16:12:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Maciej S. Szmigiero" X-Patchwork-Id: 13702697 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 1702AC27C4F for ; Tue, 18 Jun 2024 16:14:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sJbTI-0005uZ-7b; Tue, 18 Jun 2024 12:14:12 -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 1sJbT5-0005Vg-SS for qemu-devel@nongnu.org; Tue, 18 Jun 2024 12:14:00 -0400 Received: from vps-vb.mhejs.net ([37.28.154.113]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sJbT4-0000vc-BM for qemu-devel@nongnu.org; Tue, 18 Jun 2024 12:13:59 -0400 Received: from MUA by vps-vb.mhejs.net with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sJbSx-0001eF-7S; Tue, 18 Jun 2024 18:13:51 +0200 From: "Maciej S. Szmigiero" To: Peter Xu , Fabiano Rosas Cc: Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_G?= =?utf-8?q?oater?= , Eric Blake , Markus Armbruster , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= , Avihai Horon , Joao Martins , qemu-devel@nongnu.org Subject: [PATCH v1 12/13] vfio/migration: Add x-migration-multifd-transfer VFIO property Date: Tue, 18 Jun 2024 18:12:30 +0200 Message-ID: <9b8ae3b7cbfd2e4328ae8e0167fb51d04567cbac.1718717584.git.maciej.szmigiero@oracle.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=37.28.154.113; envelope-from=mail@maciej.szmigiero.name; helo=vps-vb.mhejs.net X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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 From: "Maciej S. Szmigiero" This property allows configuring at runtime whether to send the particular device state via multifd channels when live migrating that device. It is ignored on the receive side and defaults to "false" for bit stream compatibility with older QEMU versions. Signed-off-by: Maciej S. Szmigiero --- hw/vfio/pci.c | 7 +++++++ include/hw/vfio/vfio-common.h | 1 + 2 files changed, 8 insertions(+) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 74a79bdf61f9..e2ac1db96002 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -3346,6 +3346,8 @@ static void vfio_instance_init(Object *obj) pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; } +static PropertyInfo qdev_prop_bool_mutable; + static Property vfio_pci_dev_properties[] = { DEFINE_PROP_PCI_HOST_DEVADDR("host", VFIOPCIDevice, host), DEFINE_PROP_UUID_NODEFAULT("vf-token", VFIOPCIDevice, vf_token), @@ -3367,6 +3369,8 @@ static Property vfio_pci_dev_properties[] = { VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT, false), DEFINE_PROP_ON_OFF_AUTO("enable-migration", VFIOPCIDevice, vbasedev.enable_migration, ON_OFF_AUTO_AUTO), + DEFINE_PROP("x-migration-multifd-transfer", VFIOPCIDevice, + vbasedev.migration_multifd_transfer, qdev_prop_bool_mutable, bool), DEFINE_PROP_BOOL("migration-events", VFIOPCIDevice, vbasedev.migration_events, false), DEFINE_PROP_BOOL("x-no-mmap", VFIOPCIDevice, vbasedev.no_mmap, false), @@ -3464,6 +3468,9 @@ static const TypeInfo vfio_pci_nohotplug_dev_info = { static void register_vfio_pci_dev_type(void) { + qdev_prop_bool_mutable = qdev_prop_bool; + qdev_prop_bool_mutable.realized_set_allowed = true; + type_register_static(&vfio_pci_dev_info); type_register_static(&vfio_pci_nohotplug_dev_info); } diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index aa8476a859a6..bc85891d8fff 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -132,6 +132,7 @@ typedef struct VFIODevice { bool no_mmap; bool ram_block_discard_allowed; OnOffAuto enable_migration; + bool migration_multifd_transfer; bool migration_events; VFIODeviceOps *ops; unsigned int num_irqs;