> Date: Mon, 20 Aug 2018 11:43:31 +1000
> From: Jonathan Gray <j...@jsg.id.au>
>
> On Sun, Aug 19, 2018 at 07:38:44PM +0200, Mark Kettenis wrote:
> > If memory is supposed to be cached, we should make it so. Matches
> > what the Linux version of this code does.
> >
> > ok?
>
> Sure, I had something similiar in a tree here.
> Could you keep the comment in the original code as well?
Can you just commit your version?
> Index: ttm_bo_util.c
> ===================================================================
> RCS file: /cvs/src/sys/dev/pci/drm/ttm/ttm_bo_util.c,v
> retrieving revision 1.19
> diff -u -p -r1.19 ttm_bo_util.c
> --- ttm_bo_util.c 25 Apr 2018 01:27:46 -0000 1.19
> +++ ttm_bo_util.c 20 Aug 2018 01:32:45 -0000
> @@ -514,6 +514,9 @@ EXPORT_SYMBOL(ttm_io_prot);
>
> pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp)
> {
> + /* Cached mappings need no adjustment */
> + if (caching_flags & TTM_PL_FLAG_CACHED)
> + return tmp;
> #ifdef PMAP_WC
> if (caching_flags & TTM_PL_FLAG_WC)
> return PMAP_WC;
>
