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From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: "Marek Olšák" <maraeo@gmail.com>, "Dave Airlie" <airlied@gmail.com>
Cc: ML Mesa-dev <mesa-dev@lists.freedesktop.org>,
	dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [Mesa-dev] [RFC] Linux Graphics Next: Explicit fences everywhere and no BO fences - initial proposal
Date: Wed, 28 Apr 2021 08:59:47 +0200	[thread overview]
Message-ID: <153487a3-082b-faf7-2a4d-ae15993b2a5d@gmail.com> (raw)
In-Reply-To: <CAAxE2A55Te6DjabYH8ELyfM03x2ZDaLsCsNC4Zqkrq0ExdpeHA@mail.gmail.com>


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Hi Dave,

Am 27.04.21 um 21:23 schrieb Marek Olšák:
> Supporting interop with any device is always possible. It depends on 
> which drivers we need to interoperate with and update them. We've 
> already found the path forward for amdgpu. We just need to find out 
> how many other drivers need to be updated and evaluate the 
> cost/benefit aspect.
>
> Marek
>
> On Tue, Apr 27, 2021 at 2:38 PM Dave Airlie <airlied@gmail.com 
> <mailto:airlied@gmail.com>> wrote:
>
>     On Tue, 27 Apr 2021 at 22:06, Christian König
>     <ckoenig.leichtzumerken@gmail.com
>     <mailto:ckoenig.leichtzumerken@gmail.com>> wrote:
>     >
>     > Correct, we wouldn't have synchronization between device with
>     and without user queues any more.
>     >
>     > That could only be a problem for A+I Laptops.
>
>     Since I think you mentioned you'd only be enabling this on newer
>     chipsets, won't it be a problem for A+A where one A is a generation
>     behind the other?
>

Crap, that is a good point as well.

>
>     I'm not really liking where this is going btw, seems like a ill
>     thought out concept, if AMD is really going down the road of designing
>     hw that is currently Linux incompatible, you are going to have to
>     accept a big part of the burden in bringing this support in to more
>     than just amd drivers for upcoming generations of gpu.
>

Well we don't really like that either, but we have no other option as 
far as I can see.

I have a couple of ideas how to handle this in the kernel without 
dma_fences, but it always require more or less changes to all existing 
drivers.

Christian.

>
>     Dave.
>


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  reply	other threads:[~2021-04-28  6:59 UTC|newest]

Thread overview: 105+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-19 10:47 [RFC] Linux Graphics Next: Explicit fences everywhere and no BO fences - initial proposal Marek Olšák
2021-04-19 15:48 ` Jason Ekstrand
2021-04-20  2:25   ` Marek Olšák
2021-04-20 10:15   ` [Mesa-dev] " Christian König
2021-04-20 10:34     ` Daniel Vetter
2021-04-20 11:03       ` Marek Olšák
2021-04-20 11:16         ` Daniel Vetter
2021-04-20 11:59           ` Christian König
2021-04-20 14:09             ` Daniel Vetter
2021-04-20 16:24               ` Jason Ekstrand
2021-04-20 16:19             ` Jason Ekstrand
2021-04-20 12:01 ` Daniel Vetter
2021-04-20 12:19   ` [Mesa-dev] " Christian König
2021-04-20 13:03   ` Daniel Stone
2021-04-20 14:04     ` Daniel Vetter
2021-04-20 12:42 ` Daniel Stone
2021-04-20 15:45   ` Jason Ekstrand
2021-04-20 17:44     ` Daniel Stone
2021-04-20 18:00       ` [Mesa-dev] " Christian König
2021-04-20 18:15         ` Daniel Stone
2021-04-20 19:03           ` Bas Nieuwenhuizen
2021-04-20 19:18             ` Daniel Stone
2021-04-20 18:53       ` Daniel Vetter
2021-04-20 19:14         ` Daniel Stone
2021-04-20 19:29           ` Daniel Vetter
2021-04-20 20:32             ` Daniel Stone
2021-04-26 20:59               ` Marek Olšák
2021-04-27  8:02                 ` Daniel Vetter
2021-04-27 11:49                   ` Marek Olšák
2021-04-27 12:06                     ` Christian König
2021-04-27 12:11                       ` Marek Olšák
2021-04-27 12:15                         ` Daniel Vetter
2021-04-27 12:27                           ` Christian König
2021-04-27 12:46                           ` Marek Olšák
2021-04-27 12:50                             ` Christian König
2021-04-27 13:26                               ` Marek Olšák
2021-04-27 15:13                                 ` Christian König
2021-04-27 17:31                                 ` Lucas Stach
2021-04-27 17:35                                   ` Simon Ser
2021-04-27 18:01                                     ` Alex Deucher
2021-04-27 18:27                                       ` Simon Ser
2021-04-28 10:01                                         ` Daniel Vetter
2021-04-28 10:05                                       ` Daniel Vetter
2021-04-28 10:31                                         ` Christian König
2021-04-28 12:21                                           ` Daniel Vetter
2021-04-28 12:26                                             ` Daniel Vetter
2021-04-28 13:11                                               ` Christian König
2021-04-28 13:34                                                 ` Daniel Vetter
2021-04-28 13:37                                                   ` Christian König
2021-04-28 14:34                                                     ` Daniel Vetter
2021-04-28 14:45                                                       ` Christian König
2021-04-29 11:07                                                         ` Daniel Vetter
2021-04-28 20:39                                                       ` Alex Deucher
2021-04-29 11:12                                                         ` Daniel Vetter
2021-04-30  8:58                                                           ` Daniel Vetter
2021-04-30  9:07                                                             ` Christian König
2021-04-30  9:35                                                               ` Daniel Vetter
2021-04-30 10:17                                                                 ` Daniel Stone
2021-04-28 12:45                                             ` Simon Ser
2021-04-28 13:03                                           ` Alex Deucher
2021-04-27 19:41                                   ` Jason Ekstrand
2021-04-27 21:58                                     ` Marek Olšák
2021-04-28  4:01                                       ` Jason Ekstrand
2021-04-28  5:19                                         ` Marek Olšák
2021-04-27 18:38                       ` Dave Airlie
2021-04-27 19:23                         ` Marek Olšák
2021-04-28  6:59                           ` Christian König [this message]
2021-04-28  9:07                             ` Michel Dänzer
2021-04-28  9:57                               ` Daniel Vetter
2021-05-01 22:27                               ` Marek Olšák
2021-05-03 14:42                                 ` Alex Deucher
2021-05-03 14:59                                   ` Jason Ekstrand
2021-05-03 15:03                                     ` Christian König
2021-05-03 15:15                                       ` Jason Ekstrand
2021-05-03 15:16                                     ` Bas Nieuwenhuizen
2021-05-03 15:23                                       ` Jason Ekstrand
2021-05-03 20:36                                         ` Marek Olšák
2021-05-04  3:11                                           ` Marek Olšák
2021-05-04  7:01                                             ` Christian König
2021-05-04  7:32                                               ` Daniel Vetter
2021-05-04  8:09                                                 ` Christian König
2021-05-04  8:27                                                   ` Daniel Vetter
2021-05-04  9:14                                                     ` Christian König
2021-05-04  9:47                                                       ` Daniel Vetter
2021-05-04 10:53                                                         ` Christian König
2021-05-04 11:13                                                           ` Daniel Vetter
2021-05-04 12:48                                                             ` Christian König
2021-05-04 16:44                                                               ` Daniel Vetter
2021-05-04 17:16                                                               ` Marek Olšák
2021-05-04 21:06                                                                 ` Jason Ekstrand
2021-04-28  9:54                             ` Daniel Vetter
2021-04-27 20:49                         ` Jason Ekstrand
2021-04-27 12:12                     ` Daniel Vetter
2021-04-20 19:16         ` Jason Ekstrand
2021-04-20 19:27           ` Daniel Vetter
2021-04-20 14:53 ` Daniel Stone
2021-04-20 14:58   ` [Mesa-dev] " Christian König
2021-04-20 15:07     ` Daniel Stone
2021-04-20 15:16       ` Christian König
2021-04-20 15:49         ` Daniel Stone
2021-04-20 16:25           ` Marek Olšák
2021-04-20 16:42             ` Jacob Lifshay
2021-04-20 18:03             ` Daniel Stone
2021-04-20 18:39             ` Daniel Vetter
2021-04-20 19:20               ` Marek Olšák

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