[PATCH v3 02/12] drm: Unamp the entire device address space on device unplug

[Christian König]

Am 21.11.20 um 06:21 schrieb Andrey Grodzovsky:
> Invalidate all BOs CPU mappings once device is removed.
>
> v3: Move the code from TTM into drm_dev_unplug
>
> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>

Reviewed-by: Christian König <christian.koenig at amd.com>

> ---
>   drivers/gpu/drm/drm_drv.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index 13068fd..d550fd5 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -479,6 +479,9 @@ void drm_dev_unplug(struct drm_device *dev)
>   	synchronize_srcu(&drm_unplug_srcu);
>   
>   	drm_dev_unregister(dev);
> +
> +	/* Clear all CPU mappings pointing to this device */
> +	unmap_mapping_range(dev->anon_inode->i_mapping, 0, 0, 1);
>   }
>   EXPORT_SYMBOL(drm_dev_unplug);
>