Hi
Am 11.12.19 um 13:38 schrieb Daniel Vetter:
> On Wed, Dec 11, 2019 at 01:19:53PM +0100, Gerd Hoffmann wrote:
>> The callback allows drivers and helpers to tweak pgprot for mappings.
>> This is especially helpful when using shmem helpers. It allows drivers
>> to switch mappings from writecombin
> > + /**
> > +* @pgprot:
> > +*
> > +* Tweak pgprot as needed, typically used to set cache bits.
> > +*
> > +* This callback is optional.
> > +*
> > +* If unset drm_gem_pgprot_wc() will be used.
> > +*/
> > + pgprot_t (*pgprot)(struct drm_gem_object *obj, pgprot
On Wed, Dec 11, 2019 at 01:19:53PM +0100, Gerd Hoffmann wrote:
> The callback allows drivers and helpers to tweak pgprot for mappings.
> This is especially helpful when using shmem helpers. It allows drivers
> to switch mappings from writecombine (default) to something else (cached
> for example)
The callback allows drivers and helpers to tweak pgprot for mappings.
This is especially helpful when using shmem helpers. It allows drivers
to switch mappings from writecombine (default) to something else (cached
for example) on a per-object base without having to supply their own
mmap() and vmap
