drivers/vfio/vfio_main.c

493 	struct vfio_device_file *df;
495 	df = kzalloc(sizeof(*df), GFP_KERNEL_ACCOUNT);
496 	if (!df)
499 	df->device = device;
500 	spin_lock_init(&df->kvm_ref_lock);
502 	return df;
505 static int vfio_df_device_first_open(struct vfio_device_file *df)
507 	struct vfio_device *device = df->device;
508 	struct iommufd_ctx *iommufd = df->iommufd;
517 		ret = vfio_df_iommufd_bind(df);
532 		vfio_df_iommufd_unbind(df);
540 static void vfio_df_device_last_close(struct vfio_device_file *df)
542 	struct vfio_device *device = df->device;
543 	struct iommufd_ctx *iommufd = df->iommufd;
550 		vfio_df_iommufd_unbind(df);
556 int vfio_df_open(struct vfio_device_file *df)
558 	struct vfio_device *device = df->device;
567 	if (device->open_count != 0 && !df->group)
572 		ret = vfio_df_device_first_open(df);
580 void vfio_df_close(struct vfio_device_file *df)
582 	struct vfio_device *device = df->device;
589 		vfio_df_device_last_close(df);
631 	struct vfio_device_file *df = filep->private_data;
632 	struct vfio_device *device = df->device;
634 	if (df->group)
635 		vfio_df_group_close(df);
637 		vfio_df_unbind_iommufd(df);
641 	kfree(df);
1264 	struct vfio_device_file *df = filep->private_data;
1265 	struct vfio_device *device = df->device;
1270 		return vfio_df_ioctl_bind_iommufd(df, uptr);
1273 	if (!smp_load_acquire(&df->access_granted))
1281 	if (IS_ENABLED(CONFIG_VFIO_DEVICE_CDEV) && !df->group) {
1284 			ret = vfio_df_ioctl_attach_pt(df, uptr);
1288 			ret = vfio_df_ioctl_detach_pt(df, uptr);
1313 	struct vfio_device_file *df = filep->private_data;
1314 	struct vfio_device *device = df->device;
1317 	if (!smp_load_acquire(&df->access_granted))
1330 	struct vfio_device_file *df = filep->private_data;
1331 	struct vfio_device *device = df->device;
1334 	if (!smp_load_acquire(&df->access_granted))
1345 	struct vfio_device_file *df = filep->private_data;
1346 	struct vfio_device *device = df->device;
1349 	if (!smp_load_acquire(&df->access_granted))
1371 	struct vfio_device_file *df = file->private_data;
1375 	return df->device;
1418 	struct vfio_device_file *df = file->private_data;
1425 	spin_lock(&df->kvm_ref_lock);
1426 	df->kvm = kvm;
1427 	spin_unlock(&df->kvm_ref_lock);