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SubjectRe: [PATCH 1/1] vfio: remove VFIO_GROUP_NOTIFY_SET_KVM
With this the release_work in gvt can go away as well:

diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 633acfcf76bf2..aee1a45da74bc 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -227,7 +227,6 @@ struct intel_vgpu {
struct mutex cache_lock;

struct notifier_block iommu_notifier;
- struct work_struct release_work;
atomic_t released;

struct kvm_page_track_notifier_node track_node;
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index b317ae4cc7d2d..917617d7599a9 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -228,8 +228,6 @@ static void intel_gvt_cleanup_vgpu_type_groups(struct intel_gvt *gvt)
}
}

-static void intel_vgpu_release_work(struct work_struct *work);
-
static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
unsigned long size)
{
@@ -850,8 +848,9 @@ static void intel_vgpu_release_msi_eventfd_ctx(struct intel_vgpu *vgpu)
}
}

-static void __intel_vgpu_release(struct intel_vgpu *vgpu)
+static void intel_vgpu_close_device(struct vfio_device *vfio_dev)
{
+ struct intel_vgpu *vgpu = vfio_dev_to_vgpu(vfio_dev);
struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
int ret;

@@ -880,19 +879,6 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu)
vgpu->attached = false;
}

-static void intel_vgpu_close_device(struct vfio_device *vfio_dev)
-{
- __intel_vgpu_release(vfio_dev_to_vgpu(vfio_dev));
-}
-
-static void intel_vgpu_release_work(struct work_struct *work)
-{
- struct intel_vgpu *vgpu =
- container_of(work, struct intel_vgpu, release_work);
-
- __intel_vgpu_release(vgpu);
-}
-
static u64 intel_vgpu_get_bar_addr(struct intel_vgpu *vgpu, int bar)
{
u32 start_lo, start_hi;
@@ -1639,7 +1625,6 @@ static int intel_vgpu_probe(struct mdev_device *mdev)
return PTR_ERR(vgpu);
}

- INIT_WORK(&vgpu->release_work, intel_vgpu_release_work);
vfio_init_group_dev(&vgpu->vfio_device, &mdev->dev,
&intel_vgpu_dev_ops);

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