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Thu, 22 Oct 2020 11:46:55 +0000 Received: from kwankhede-dev.nvidia.com (10.124.1.5) by mail.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Thu, 22 Oct 2020 11:46:46 +0000 From: Kirti Wankhede To: , Subject: [PATCH v27 16/17] vfio: Make vfio-pci device migration capable Date: Thu, 22 Oct 2020 16:42:06 +0530 Message-ID: <1603365127-14202-17-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1603365127-14202-1-git-send-email-kwankhede@nvidia.com> References: <1603365127-14202-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1603367174; bh=0Q2Aj5H7yuWKdtC3cAc6G0fpx2Vp2Pmzs6YP6ukJPUk=; h=From:To:CC:Subject:Date:Message-ID:X-Mailer:In-Reply-To: References:X-NVConfidentiality:MIME-Version:Content-Type; b=KOdzNtlP9z06wgIgHh6Zv9oQKZqmJgmCihItpsR7om8SOZRZelWDwZP0CrS9GiEC5 YdlTq91iRf50IM2H+xUTHphURaeUswbpoBgYHFbxdmfi1ioNrSIVrRAY6KTRJEodNe XQWDDrVTBzjR4348whRoIzuGe2jUORRDqpou1aZL5Qa6WSzPB/whWJQJatWq4yl/CS DhxK8+0KCEWlbp5UkhV16Uc1l5wS2va3z24/AtRPdbDxqci4WPbu4I19pHzURR77v6 Ah5MbnpUVXY8cRSSAy0fCuA10S3fAesQPRL3su7ZK90dlUEUCHFF/kGt5mR5pK9627 SPW6o3b6R7+tQ== Received-SPF: pass client-ip=216.228.121.64; envelope-from=kwankhede@nvidia.com; helo=hqnvemgate25.nvidia.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/22 07:44:53 X-ACL-Warn: Detected OS = Windows 7 or 8 [fuzzy] X-Spam_score_int: -70 X-Spam_score: -7.1 X-Spam_bar: ------- X-Spam_report: (-7.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_HI=-5, 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: cohuck@redhat.com, zhi.wang.linux@gmail.com, aik@ozlabs.ru, Zhengxiao.zx@Alibaba-inc.com, shuangtai.tst@alibaba-inc.com, qemu-devel@nongnu.org, peterx@redhat.com, Kirti Wankhede , eauger@redhat.com, yi.l.liu@intel.com, quintela@redhat.com, ziye.yang@intel.com, armbru@redhat.com, mlevitsk@redhat.com, pasic@linux.ibm.com, felipe@nutanix.com, zhi.a.wang@intel.com, mcrossley@nvidia.com, kevin.tian@intel.com, yan.y.zhao@intel.com, dgilbert@redhat.com, changpeng.liu@intel.com, eskultet@redhat.com, Ken.Xue@amd.com, jonathan.davies@nutanix.com, pbonzini@redhat.com, dnigam@nvidia.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" If the device is not a failover primary device, call vfio_migration_probe() and vfio_migration_finalize() to enable migration support for those devices that support it respectively to tear it down again. Removed migration blocker from VFIO PCI device specific structure and use migration blocker from generic structure of VFIO device. Signed-off-by: Kirti Wankhede Reviewed-by: Neo Jia Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Cornelia Huck --- hw/vfio/pci.c | 28 ++++++++-------------------- hw/vfio/pci.h | 1 - 2 files changed, 8 insertions(+), 21 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 1036a5332772..c67fb4cced8e 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -2788,17 +2788,6 @@ 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, errp); - if (ret) { - error_free(vdev->migration_blocker); - vdev->migration_blocker = NULL; - return; - } - } - vdev->vbasedev.name = g_path_get_basename(vdev->vbasedev.sysfsdev); vdev->vbasedev.ops = &vfio_pci_ops; vdev->vbasedev.type = VFIO_DEVICE_TYPE_PCI; @@ -3066,6 +3055,13 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) } } + if (!pdev->failover_pair_id) { + ret = vfio_migration_probe(&vdev->vbasedev, errp); + if (ret) { + error_report("%s: Migration disabled", vdev->vbasedev.name); + } + } + vfio_register_err_notifier(vdev); vfio_register_req_notifier(vdev); vfio_setup_resetfn_quirk(vdev); @@ -3080,11 +3076,6 @@ 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); - vdev->migration_blocker = NULL; - } } static void vfio_instance_finalize(Object *obj) @@ -3096,10 +3087,6 @@ 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 @@ -3127,6 +3114,7 @@ static void vfio_exitfn(PCIDevice *pdev) } vfio_teardown_msi(vdev); vfio_bars_exit(vdev); + vfio_migration_finalize(&vdev->vbasedev); } static void vfio_pci_reset(DeviceState *dev) diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h index bce71a9ac93f..1574ef983f8f 100644 --- a/hw/vfio/pci.h +++ b/hw/vfio/pci.h @@ -172,7 +172,6 @@ struct VFIOPCIDevice { bool no_vfio_ioeventfd; bool enable_ramfb; VFIODisplay *dpy; - Error *migration_blocker; Notifier irqchip_change_notifier; };