All of lore.kernel.org
 help / color / mirror / Atom feed
From: Daniel Vetter <daniel@ffwll.ch>
To: "Michel Dänzer" <michel@daenzer.net>
Cc: "Jason Ekstrand" <jason@jlekstrand.net>,
	"Marek Olšák" <maraeo@gmail.com>,
	"Christian König" <ckoenig.leichtzumerken@gmail.com>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	"ML Mesa-dev" <mesa-dev@lists.freedesktop.org>
Subject: Re: Linux Graphics Next: Userspace submission update
Date: Wed, 2 Jun 2021 21:20:28 +0200	[thread overview]
Message-ID: <YLfZ/DAanQoP2T+q@phenom.ffwll.local> (raw)
In-Reply-To: <bfb76361-c06e-71c5-6c6e-4d65373e58a1@daenzer.net>

On Wed, Jun 02, 2021 at 10:09:01AM +0200, Michel Dänzer wrote:
> On 2021-06-01 12:49 p.m., Michel Dänzer wrote:
> > On 2021-06-01 12:21 p.m., Christian König wrote:
> > 
> >> Another question is if that is sufficient as security for the display server or if we need further handling down the road? I mean essentially we are moving the reliability problem into the display server.
> > 
> > Good question. This should generally protect the display server from freezing due to client fences never signalling, but there might still be corner cases.
> 
> E.g. a client might be able to sneak in a fence between when the
> compositor checks fences and when it submits its drawing to the kernel.

This is why implicit sync should be handled with explicit IPC. You pick
the fence up once, and then you need to tell your GL stack to _not_ do
implicit sync. Would need a new extension. vk afaiui does this
automatically already.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

      reply	other threads:[~2021-06-02 19:20 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-27 21:51 Linux Graphics Next: Userspace submission update Marek Olšák
2021-05-28 14:41 ` Christian König
2021-05-28 22:25   ` Marek Olšák
2021-05-29  3:33     ` Marek Olšák
2021-05-31  8:25       ` Christian König
2021-06-01  9:02 ` Michel Dänzer
2021-06-01 10:21   ` Christian König
2021-06-01 10:49     ` Michel Dänzer
2021-06-01 12:10       ` [Mesa-dev] " Christian König
2021-06-01 12:30         ` Daniel Vetter
2021-06-01 12:51           ` Christian König
2021-06-01 13:01             ` Marek Olšák
2021-06-01 13:24               ` Michel Dänzer
2021-06-02  8:57             ` Daniel Stone
2021-06-02  9:34               ` Marek Olšák
2021-06-02  9:38                 ` Marek Olšák
2021-06-02 18:48                   ` Daniel Vetter
2021-06-02 18:52                     ` Christian König
2021-06-02 19:19                       ` Daniel Vetter
2021-06-04  7:00                         ` Christian König
2021-06-04  8:57                           ` Daniel Vetter
2021-06-04 11:27                             ` Christian König
2021-06-09 13:19                               ` Daniel Vetter
2021-06-09 13:58                                 ` Christian König
2021-06-09 18:31                                   ` Daniel Vetter
2021-06-10 15:59                                     ` Marek Olšák
2021-06-10 16:33                                       ` Christian König
2021-06-14 17:10                                         ` Marek Olšák
2021-06-14 17:13                                           ` Christian König
2021-06-17 16:48                                             ` Daniel Vetter
2021-06-17 18:28                                               ` Marek Olšák
2021-06-17 19:04                                                 ` Daniel Vetter
2021-06-17 19:23                                                   ` Marek Olšák
2021-06-03  3:16                     ` Marek Olšák
2021-06-03  7:47                       ` Daniel Vetter
2021-06-03  8:20                         ` Marek Olšák
2021-06-03 10:03                           ` Daniel Vetter
2021-06-03 10:55                             ` Marek Olšák
2021-06-03 11:22                               ` Daniel Vetter
2021-06-03 17:52                                 ` Marek Olšák
2021-06-03 19:18                                   ` Daniel Vetter
2021-06-04  5:26                                     ` Marek Olšák
2021-06-02  9:44               ` Christian König
2021-06-02  9:58                 ` Marek Olšák
2021-06-02 10:06                   ` Christian König
2021-06-01 13:18         ` Michel Dänzer
2021-06-01 17:39           ` Michel Dänzer
2021-06-01 17:42           ` Daniel Stone
2021-06-02  8:09       ` Michel Dänzer
2021-06-02 19:20         ` Daniel Vetter [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YLfZ/DAanQoP2T+q@phenom.ffwll.local \
    --to=daniel@ffwll.ch \
    --cc=ckoenig.leichtzumerken@gmail.com \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=jason@jlekstrand.net \
    --cc=maraeo@gmail.com \
    --cc=mesa-dev@lists.freedesktop.org \
    --cc=michel@daenzer.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.