Re: [PATCH v2 07/11] drm/ttm: drop VM_DONTDUMP

From: Gerd Hoffmann
Date: Tue Sep 17 2019 - 07:40:48 EST


On Tue, Sep 17, 2019 at 11:22:35AM +0000, Koenig, Christian wrote:
> Am 17.09.19 um 11:24 schrieb Gerd Hoffmann:
> > Not obvious why this is needed. According to Deniel Vetter this is most
> > likely a historic artefact dating back to the days where drm drivers
> > exposed hardware registers as mmap'able gem objects, to avoid dumping
> > touching those registers.
>
> Clearly a NAK.
>
> We still have that and really don't want to try dumping any CPU
> inaccessible VRAM content even if it is mapped into the address space
> somewhere.

Thanks for the clarification, I'll drop the patch.

cheers,
Gerd