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Re: [PATCH v29 05/17] vfio: Add VM state change handler to know state of
From: |
Alex Williamson |
Subject: |
Re: [PATCH v29 05/17] vfio: Add VM state change handler to know state of VM |
Date: |
Mon, 26 Oct 2020 08:02:57 -0600 |
On Mon, 26 Oct 2020 19:18:51 +0530
Kirti Wankhede <kwankhede@nvidia.com> wrote:
> On 10/26/2020 6:30 PM, Alex Williamson wrote:
> > On Mon, 26 Oct 2020 15:06:15 +0530
> > Kirti Wankhede <kwankhede@nvidia.com> wrote:
> >
> >> VM state change handler is called on change in VM's state. Based on
> >> VM state, VFIO device state should be changed.
> >> Added read/write helper functions for migration region.
> >> Added function to set device_state.
> >>
> >> Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
> >> Reviewed-by: Neo Jia <cjia@nvidia.com>
> >> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> >> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
> >> ---
> >> hw/vfio/migration.c | 158
> >> ++++++++++++++++++++++++++++++++++++++++++
> >> hw/vfio/trace-events | 2 +
> >> include/hw/vfio/vfio-common.h | 4 ++
> >> 3 files changed, 164 insertions(+)
> >>
> >> diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
> >> index fd7faf423cdc..65ce735d667b 100644
> >> --- a/hw/vfio/migration.c
> >> +++ b/hw/vfio/migration.c
> > [snip]
> >> @@ -64,6 +216,9 @@ static int vfio_migration_init(VFIODevice *vbasedev,
> >> ret = -EINVAL;
> >> goto err;
> >> }
> >> +
> >> + migration->vm_state =
> >> qemu_add_vm_change_state_handler(vfio_vmstate_change,
> >> + vbasedev);
> >> return 0;
> >>
> >> err:
> >
> > Fails to build, @migration is not defined. We could use
> > vbasedev->migration or pull defining and setting @migration from patch
> > 06. Thanks,
> >
>
> Pulling and setting migration from patch 06 seems better option.
> Should I resend patch 5 & 6 only?
I've resolved this locally as patch 05:
@@ -38,6 +190,7 @@ static int vfio_migration_init(VFIODevice *vbasedev,
{
int ret;
Object *obj;
+ VFIOMigration *migration;
if (!vbasedev->ops->vfio_get_object) {
return -EINVAL;
@@ -64,6 +217,10 @@ static int vfio_migration_init(VFIODevice *vbasedev,
ret = -EINVAL;
goto err;
}
+
+ migration = vbasedev->migration;
+ migration->vm_state = qemu_add_vm_change_state_handler(vfio_vmstate_change,
+ vbasedev);
return 0;
err:
patch 06:
@@ -219,8 +243,11 @@ static int vfio_migration_init(VFIODevice *vbasedev,
}
migration = vbasedev->migration;
+ migration->vbasedev = vbasedev;
migration->vm_state = qemu_add_vm_change_state_handler(vfio_vmstate_change,
vbasedev);
+ migration->migration_state.notify = vfio_migration_state_notifier;
+ add_migration_state_change_notifier(&migration->migration_state);
return 0;
err:
If you're satisfied with that, no need to resend. Thanks,
Alex
- [PATCH v29 00/17] Add migration support for VFIO devices, Kirti Wankhede, 2020/10/26
- [PATCH v29 01/17] vfio: Add function to unmap VFIO region, Kirti Wankhede, 2020/10/26
- [PATCH v29 02/17] vfio: Add vfio_get_object callback to VFIODeviceOps, Kirti Wankhede, 2020/10/26
- [PATCH v29 03/17] vfio: Add save and load functions for VFIO PCI devices, Kirti Wankhede, 2020/10/26
- [PATCH v29 04/17] vfio: Add migration region initialization and finalize function, Kirti Wankhede, 2020/10/26
- [PATCH v29 05/17] vfio: Add VM state change handler to know state of VM, Kirti Wankhede, 2020/10/26
[PATCH v29 06/17] vfio: Add migration state change notifier, Kirti Wankhede, 2020/10/26
[PATCH v29 07/17] vfio: Register SaveVMHandlers for VFIO device, Kirti Wankhede, 2020/10/26
[PATCH v29 08/17] vfio: Add save state functions to SaveVMHandlers, Kirti Wankhede, 2020/10/26
[PATCH v29 09/17] vfio: Add load state functions to SaveVMHandlers, Kirti Wankhede, 2020/10/26
[PATCH v29 10/17] memory: Set DIRTY_MEMORY_MIGRATION when IOMMU is enabled, Kirti Wankhede, 2020/10/26
[PATCH v29 11/17] vfio: Get migration capability flags for container, Kirti Wankhede, 2020/10/26
[PATCH v29 12/17] vfio: Add function to start and stop dirty pages tracking, Kirti Wankhede, 2020/10/26