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drm/i915/gvt: remove the vgpu->released and its sanity check

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The life cycle of a vGPU, which is represented by a vfio_device, has been
managed by the VFIO core logic. Remove the vgpu->released, which was used
for a sanity check on the removal path of the vGPU instance. The sanity
check has already been covered in the VFIO core logic.

Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: intel-gvt-dev@lists.freedesktop.org
Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20221104145652.1570-1-zhi.a.wang@intel.com
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Zhi Wang
2022-11-04 14:56:50 +00:00
committed by Zhenyu Wang
parent a34985dcac
commit 2d3bc87543
2 changed files with 0 additions and 6 deletions
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2
drivers/gpu/drm/i915/gvt/gvt.h
View File

@@ -226,8 +226,6 @@ struct intel_vgpu {
unsigned long nr_cache_entries;
struct mutex cache_lock;
atomic_t released;
struct kvm_page_track_notifier_node track_node;
#define NR_BKT (1 << 18)
struct hlist_head ptable[NR_BKT];

4
drivers/gpu/drm/i915/gvt/kvmgt.c
View File

@@ -785,7 +785,6 @@ static int intel_vgpu_open_device(struct vfio_device *vfio_dev)
intel_gvt_activate_vgpu(vgpu);
atomic_set(&vgpu->released, 0);
return 0;
}
@@ -807,9 +806,6 @@ static void intel_vgpu_close_device(struct vfio_device *vfio_dev)
if (!vgpu->attached)
return;
if (atomic_cmpxchg(&vgpu->released, 0, 1))
return;
intel_gvt_release_vgpu(vgpu);
debugfs_remove(debugfs_lookup(KVMGT_DEBUGFS_FILENAME, vgpu->debugfs));