From: "Christian König" <deathsimple-ANTagKRnAhcb1SvskN2V4Q@public.gmane.org>
To: "Michel Dänzer" <michel-otUistvHUpPR7s880joybQ@public.gmane.org>,
"Chris Wilson"
<chris-Y6uKTt2uX1cEflXRtASbqLVCufUGDwFn@public.gmane.org>,
"Mario Kleiner"
<mario.kleiner.de-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: Re: [PATCH] drm/i915: Before pageflip, also wait for shared dmabuf fences.
Date: Wed, 21 Sep 2016 12:30:19 +0200 [thread overview]
Message-ID: <554f660d-cc8d-295e-42aa-c374e95bdc8a@vodafone.de> (raw)
In-Reply-To: <7aafce92-8bcf-1c5c-45de-9e8ecda85239-otUistvHUpPR7s880joybQ@public.gmane.org>
Am 21.09.2016 um 11:56 schrieb Michel Dänzer:
>
> Looks like there are different interpretations of the semantics of
> exclusive vs. shared fences. Where are these semantics documented?
Yeah, I think as well that this is the primary question here.
IIRC the fences were explicitly called exclusive/shared instead of
writing/reading on purpose.
I absolutely don't mind switching to them to writing/reading semantics,
but amdgpu really needs multiple writers at the same time.
So in this case the writing side of a reservation object needs to be a
collection of fences as well.
> FWIW, we seem to have the same issue with radeon vs. amdgpu: radeon only
> seems to wait for exclusive fences, so e.g. running Xorg on amdgpu and
> using PRIME slave scanout on radeon leaves artifacts.
Yeah, I know. See radeon_display.c radeon_flip_work_func().
We pretty much need the same patch here I've done for amdgpu as well.
Regards,
Christian.
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next prev parent reply other threads:[~2016-09-21 10:30 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-08 0:14 [PATCH] drm/i915: Before pageflip, also wait for shared dmabuf fences Mario Kleiner
2016-09-08 6:30 ` Chris Wilson
2016-09-08 15:21 ` Mario Kleiner
2016-09-08 16:23 ` Chris Wilson
[not found] ` <20160908162346.GA5479-aII6DKEyn0pWYbfKqPwjAkR8Iwp7RQ6xAL8bYrjMMd8@public.gmane.org>
2016-09-09 1:15 ` Michel Dänzer
[not found] ` <abccc8ac-10c6-ab22-c59d-f43ee48ba78d-otUistvHUpPR7s880joybQ@public.gmane.org>
2016-09-13 8:44 ` Christian König
2016-09-13 9:39 ` Chris Wilson
[not found] ` <20160913093945.GA25204-aII6DKEyn0pWYbfKqPwjAkR8Iwp7RQ6xAL8bYrjMMd8@public.gmane.org>
2016-09-13 12:52 ` Christian König
2016-09-21 9:56 ` Michel Dänzer
[not found] ` <7aafce92-8bcf-1c5c-45de-9e8ecda85239-otUistvHUpPR7s880joybQ@public.gmane.org>
2016-09-21 10:30 ` Christian König [this message]
2016-09-21 11:04 ` Daniel Vetter
[not found] ` <CAKMK7uG3j54NzwjxmWuSmP787r+QN-Cu5T8R-naX6S9RvvKemw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-09-21 11:19 ` Christian König
2016-09-21 12:56 ` Daniel Vetter
[not found] ` <CAKMK7uH6N2Kgwkf-11iwdqDAUrFmreYKLLeTGXmEh+N0DQ4tJg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-09-21 15:07 ` Michel Dänzer
[not found] ` <9d1f4872-cabd-bd1b-7f10-6e4230a1f58c-otUistvHUpPR7s880joybQ@public.gmane.org>
2016-09-21 15:15 ` Christian König
[not found] ` <5c2048ff-0e20-ddf3-2d73-9a3acb38e7ff-ANTagKRnAhcb1SvskN2V4Q@public.gmane.org>
2016-09-21 15:29 ` Michel Dänzer
2016-09-21 16:23 ` Christian König
2016-09-22 6:36 ` Daniel Vetter
[not found] ` <20160922063625.GD22164-XQyZGdhdUcTMwUGJfOwWj/ooFf0ArEBIu+b9c/7xato@public.gmane.org>
2016-09-22 10:55 ` Christian König
2016-09-22 12:26 ` Daniel Vetter
2016-09-22 12:44 ` Christian König
2016-09-22 13:05 ` Daniel Vetter
2016-09-22 13:22 ` Christian König
[not found] ` <d2430ff8-43bd-bff2-9b02-847cabfd56c0-ANTagKRnAhcb1SvskN2V4Q@public.gmane.org>
2016-09-23 10:00 ` Michel Dänzer
2016-09-23 12:09 ` Daniel Vetter
2016-09-26 0:48 ` Michel Dänzer
2016-09-26 8:04 ` Daniel Vetter
[not found] ` <20160926080419.GV20761-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2016-10-07 12:34 ` Mike Lothian
[not found] ` <CAHbf0-HZ6EotqwgvkxRTdRF97xB3qBA=DRKAzaAXguV_PR_P8w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-11 3:58 ` Michel Dänzer
[not found] ` <d74d34a7-5221-d282-d9d1-b0e1007fc0c7-otUistvHUpPR7s880joybQ@public.gmane.org>
2016-10-11 12:04 ` Christian König
[not found] ` <c77a2cb9-1f0e-f1a3-aedd-a111cd6ba8e8-ANTagKRnAhcb1SvskN2V4Q@public.gmane.org>
2016-10-12 0:40 ` Michel Dänzer
2016-10-27 13:33 ` Mike Lothian
[not found] ` <CAHbf0-GGMWZrhB+PKpc-QbD__6fqB4pQVFfN+gzLWNhi+DuG3Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-28 1:34 ` Michel Dänzer
2016-10-28 17:37 ` Mario Kleiner
2016-10-28 18:37 ` Mike Lothian
2016-10-29 13:58 ` Mike Lothian
[not found] ` <CAHbf0-EY2OM_HgxTjmMi4-f5TQ8fkqf5XYBxHZtJVsnSpxPyyA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-31 6:44 ` Michel Dänzer
[not found] ` <c45e2f4c-c075-47b6-7e02-3bd98748c83a-otUistvHUpPR7s880joybQ@public.gmane.org>
2016-10-31 8:00 ` Christian König
2016-10-31 8:06 ` Michel Dänzer
[not found] ` <7eb19a73-a558-d2e6-bd8d-34fe95045dfd-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-10-28 17:48 ` Christian König
2016-11-05 1:17 ` Mario Kleiner
2016-10-31 6:41 ` Michel Dänzer
2016-09-22 6:33 ` Daniel Vetter
2016-09-21 15:13 ` Michel Dänzer
[not found] ` <f0e034f9-db22-6577-97c7-dd8d3e851226-otUistvHUpPR7s880joybQ@public.gmane.org>
2016-09-21 15:21 ` Christian König
2016-09-21 15:28 ` Michel Dänzer
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