Re: [PATCH] drm/ttm: Make sure BOs being swapped out are cacheable

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Am 27.01.2017 um 15:12 schrieb Daniel Vetter:
On Fri, Jan 27, 2017 at 09:22:47AM +0100, Christian König wrote:
Am 27.01.2017 um 08:30 schrieb Daniel Vetter:
On Fri, Jan 27, 2017 at 07:23:58AM +0100, Thomas Hellstrom wrote:
On 01/27/2017 03:29 AM, Michel Dänzer wrote:
On 26/01/17 09:46 AM, Sinclair Yeh wrote:
On Wed, Jan 25, 2017 at 10:49:33AM +0100, Christian König wrote:
Am 25.01.2017 um 10:25 schrieb Thomas Hellstrom:
On 01/25/2017 09:21 AM, Michel Dänzer wrote:
From: Michel Dänzer <michel.daenzer@xxxxxxx>

The current caching state may not be tt_cached, even though the
placement contains TTM_PL_FLAG_CACHED, because placement can contain
multiple caching flags. Trying to swap out such a BO would trip up the

	BUG_ON(ttm->caching_state != tt_cached);

in ttm_tt_swapout.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Michel Dänzer <michel.daenzer@xxxxxxx>
Reviewed-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>.
Reviewed-by: Sinclair Yeh <syeh@xxxxxxxxxx>
Thanks for the reviews! Via which tree should we merge this?


I don't maintain a TTM tree any longer. Let's check with Daniel if he
can merge it through drm-misc.
I'm trying very hard not to get volunteered for ttm maintainer :-)
Yeah, ok I volunteer. Wanted to take that over for a while anyway.
I guess you didn't use the dim magic to push it? The test integration tree
isn't rebuild ... Quickstart for the tooling:

Autsch! Do I have to use that or can I just go with my usual tool set?

Would probably be a pain to set this up everywhere here.

Christian.


https://01.org/linuxgraphics/gfx-docs/maintainer-tools/dim.html

-Daniel


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