[PATCH v2 6/8] drm/amdgpu: Unmap entire device address space on device remove.

[Daniel Vetter]

On Sun, Jun 21, 2020 at 02:03:06AM -0400, Andrey Grodzovsky wrote:
> Use the new TTM interface to invalidate all exsisting BO CPU mappings
> form all user proccesses.
> 
> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index 43592dc..6932d75 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -1135,6 +1135,7 @@ amdgpu_pci_remove(struct pci_dev *pdev)
>  	struct drm_device *dev = pci_get_drvdata(pdev);
>  
>  	drm_dev_unplug(dev);
> +	ttm_bo_unmap_virtual_address_space(&adev->mman.bdev);
>  	amdgpu_driver_unload_kms(dev);

Hm a ttm, or maybe even vram helper function which wraps drm_dev_unplug +
ttm unmapping into one would be nice I think? I suspect there's going to
be more in the future here.
-Daniel

>  
>  	pci_disable_device(pdev);
> -- 
> 2.7.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch