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

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Date:   Fri, 27 Jan 2017 07:23:58 +0100
From:   Thomas Hellstrom <thellstrom@...are.com>
To:     Michel Dänzer <michel@...nzer.net>,
        Sinclair Yeh <syeh@...are.com>,
        Christian König <christian.koenig@....com>
CC:     <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>
Subject: Re: [PATCH] drm/ttm: Make sure BOs being swapped out are cacheable

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@....com>
>>>>>
>>>>> 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@...r.kernel.org
>>>>> Signed-off-by: Michel Dänzer <michel.daenzer@....com>
>>>> Reviewed-by: Thomas Hellstrom <thellstrom@...are.com>
>>> Reviewed-by: Christian König <christian.koenig@....com>.
>> Reviewed-by: Sinclair Yeh <syeh@...are.com>
> 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.

/Thomas