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[PATCH v26 16/17] vfio: Make vfio-pci device migration capable
From: |
Kirti Wankhede |
Subject: |
[PATCH v26 16/17] vfio: Make vfio-pci device migration capable |
Date: |
Wed, 23 Sep 2020 04:54:18 +0530 |
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 vfio_pci_vmstate structure.
Removed migration blocker from VFIO PCI device specific structure and use
migration blocker from generic structure of VFIO device.
Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Neo Jia <cjia@nvidia.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
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 9968cc553391..2418a448ebca 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2872,17 +2872,6 @@ 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;
@@ -3152,6 +3141,13 @@ 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);
@@ -3166,11 +3162,6 @@ 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)
@@ -3182,10 +3173,6 @@ 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
@@ -3213,6 +3200,7 @@ 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 9f46af7e153f..0e3782b8e38a 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -173,7 +173,6 @@ struct VFIOPCIDevice {
bool no_vfio_ioeventfd;
bool enable_ramfb;
VFIODisplay *dpy;
- Error *migration_blocker;
Notifier irqchip_change_notifier;
};
--
2.7.0
- Re: [PATCH v26 08/17] vfio: Add save state functions to SaveVMHandlers, (continued)
- [PATCH v26 09/17] vfio: Add load state functions to SaveVMHandlers, Kirti Wankhede, 2020/09/22
- [PATCH v26 10/17] memory: Set DIRTY_MEMORY_MIGRATION when IOMMU is enabled, Kirti Wankhede, 2020/09/22
- [PATCH v26 12/17] vfio: Add function to start and stop dirty pages tracking, Kirti Wankhede, 2020/09/22
- [PATCH v26 11/17] vfio: Get migration capability flags for container, Kirti Wankhede, 2020/09/22
- [PATCH v26 13/17] vfio: create mapped iova list when vIOMMU is enabled, Kirti Wankhede, 2020/09/22
- [PATCH v26 14/17] vfio: Add vfio_listener_log_sync to mark dirty pages, Kirti Wankhede, 2020/09/22
- [PATCH v26 15/17] vfio: Add ioctl to get dirty pages bitmap during dma unmap., Kirti Wankhede, 2020/09/22
- [PATCH v26 16/17] vfio: Make vfio-pci device migration capable,
Kirti Wankhede <=
- [PATCH v26 17/17] qapi: Add VFIO devices migration stats in Migration stats, Kirti Wankhede, 2020/09/22
- Re: [PATCH QEMU v25 00/17] Add migration support for VFIO devices, Zenghui Yu, 2020/09/23