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

[Daniel Vetter]

On Mon, Jun 22, 2020 at 03:48:29PM -0400, Alex Deucher wrote:
> On Mon, Jun 22, 2020 at 3:38 PM Christian König
> <ckoenig.leichtzumerken at gmail.com> wrote:
> >
> > Am 21.06.20 um 08:03 schrieb Andrey Grodzovsky:
> > > 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>
> >
> > Reviewed-by: Christian König <christian.koenig at amd.com>
> >
> > I think those two patches could already land in amd-staging-drm-next
> > since they are a good idea independent of how else we fix the other issues.
> 
> Please make sure they land in drm-misc as well.

Not sure that's much use, since without any of the fault side changes you
just blow up on the first refault. Seems somewhat silly to charge ahead on
this with the other bits still very much under discussion.

Plus I suggested a possible bikeshed here :-)
-Daniel

> 
> Alex
> 
> >
> > > ---
> > >   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);
> > >
> > >       pci_disable_device(pdev);
> >

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