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[Qemu-devel] [PATCH v5 07/13] vfio: Add migration state change notifier
From: |
Kirti Wankhede |
Subject: |
[Qemu-devel] [PATCH v5 07/13] vfio: Add migration state change notifier |
Date: |
Tue, 9 Jul 2019 00:47:26 +0530 |
Added migration state change notifier to get notification on migration state
change. These states are translated to VFIO device state and conveyed to vendor
driver.
Signed-off-by: Kirti Wankhede <address@hidden>
Reviewed-by: Neo Jia <address@hidden>
---
hw/vfio/migration.c | 54 +++++++++++++++++++++++++++++++++++++++++++
hw/vfio/trace-events | 1 +
include/hw/vfio/vfio-common.h | 1 +
3 files changed, 56 insertions(+)
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index c01f08b659d0..e4a89a6f9bc7 100644
--- a/hw/vfio/migration.c
+++ b/hw/vfio/migration.c
@@ -132,6 +132,53 @@ static void vfio_vmstate_change(void *opaque, int running,
RunState state)
}
}
+static void vfio_migration_state_notifier(Notifier *notifier, void *data)
+{
+ MigrationState *s = data;
+ VFIODevice *vbasedev = container_of(notifier, VFIODevice, migration_state);
+ int ret;
+
+ trace_vfio_migration_state_notifier(vbasedev->name, s->state);
+
+ switch (s->state) {
+ case MIGRATION_STATUS_ACTIVE:
+ if (vbasedev->device_state & VFIO_DEVICE_STATE_RUNNING) {
+ if (vbasedev->vm_running) {
+ ret = vfio_migration_set_state(vbasedev,
+ VFIO_DEVICE_STATE_RUNNING |
VFIO_DEVICE_STATE_SAVING);
+ if (ret) {
+ error_report("%s: Failed to set state RUNNING and SAVING",
+ vbasedev->name);
+ }
+ } else {
+ ret = vfio_migration_set_state(vbasedev,
+ VFIO_DEVICE_STATE_SAVING);
+ if (ret) {
+ error_report("%s: Failed to set state STOP and SAVING",
+ vbasedev->name);
+ }
+ }
+ } else {
+ ret = vfio_migration_set_state(vbasedev,
+ VFIO_DEVICE_STATE_RESUMING);
+ if (ret) {
+ error_report("%s: Failed to set state RESUMING",
+ vbasedev->name);
+ }
+ }
+ return;
+
+ case MIGRATION_STATUS_CANCELLING:
+ case MIGRATION_STATUS_CANCELLED:
+ case MIGRATION_STATUS_FAILED:
+ ret = vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_RUNNING);
+ if (ret) {
+ error_report("%s: Failed to set state RUNNING", vbasedev->name);
+ }
+ return;
+ }
+}
+
static int vfio_migration_init(VFIODevice *vbasedev,
struct vfio_region_info *info)
{
@@ -152,6 +199,9 @@ static int vfio_migration_init(VFIODevice *vbasedev,
vbasedev->vm_state = qemu_add_vm_change_state_handler(vfio_vmstate_change,
vbasedev);
+ vbasedev->migration_state.notify = vfio_migration_state_notifier;
+ add_migration_state_change_notifier(&vbasedev->migration_state);
+
return 0;
}
@@ -194,6 +244,10 @@ void vfio_migration_finalize(VFIODevice *vbasedev)
return;
}
+ if (vbasedev->migration_state.notify) {
+ remove_migration_state_change_notifier(&vbasedev->migration_state);
+ }
+
if (vbasedev->vm_state) {
qemu_del_vm_change_state_handler(vbasedev->vm_state);
}
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index 3d15bacd031a..69503228f20e 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -148,3 +148,4 @@ vfio_display_edid_write_error(void) ""
vfio_migration_probe(char *name, uint32_t index) " (%s) Region %d"
vfio_migration_set_state(char *name, uint32_t state) " (%s) state %d"
vfio_vmstate_change(char *name, int running, const char *reason, uint32_t
dev_state) " (%s) running %d reason %s device state %d"
+vfio_migration_state_notifier(char *name, int state) " (%s) state %d"
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index f6c70db3a9c1..a022484d2636 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -128,6 +128,7 @@ typedef struct VFIODevice {
uint32_t device_state;
VMChangeStateEntry *vm_state;
int vm_running;
+ Notifier migration_state;
} VFIODevice;
struct VFIODeviceOps {
--
2.7.0
- [Qemu-devel] [PATCH v5 00/13] Add migration support for VFIO device, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 01/13] vfio: KABI for migration interface, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 02/13] vfio: Add function to unmap VFIO region, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 03/13] vfio: Add vfio_get_object callback to VFIODeviceOps, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 04/13] vfio: Add save and load functions for VFIO PCI devices, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 06/13] vfio: Add VM state change handler to know state of VM, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 07/13] vfio: Add migration state change notifier,
Kirti Wankhede <=
- [Qemu-devel] [PATCH v5 08/13] vfio: Register SaveVMHandlers for VFIO device, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 05/13] vfio: Add migration region initialization and finalize function, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 09/13] vfio: Add save state functions to SaveVMHandlers, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 10/13] vfio: Add load state functions to SaveVMHandlers, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 11/13] vfio: Add function to get dirty page list, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 12/13] vfio: Add vfio_listerner_log_sync to mark dirty pages, Kirti Wankhede, 2019/07/08
- [Qemu-devel] [PATCH v5 13/13] vfio: Make vfio-pci device migration capable., Kirti Wankhede, 2019/07/08
- Re: [Qemu-devel] [PATCH v5 00/13] Add migration support for VFIO device, no-reply, 2019/07/08
- Re: [Qemu-devel] [PATCH v5 00/13] Add migration support for VFIO device, no-reply, 2019/07/08