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From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Jani Nikula <jani.nikula@intel.com>
Cc: Josh Triplett <josh@joshtriplett.org>,
	Jonathan Corbet <corbet@lwn.net>,
	ksummit@lists.linux.dev
Subject: Re: [MAINTAINER SUMMIT] User-space requirements for accelerator drivers
Date: Tue, 14 Sep 2021 17:10:15 +0200	[thread overview]
Message-ID: <CAMuHMdUtamk+EAEaogu+nCxjre+K75RyFiSGVWXs6232t=hE=Q@mail.gmail.com> (raw)
In-Reply-To: <875yv32oev.fsf@intel.com>

Hi Jani,

On Tue, Sep 14, 2021 at 5:00 PM Jani Nikula <jani.nikula@intel.com> wrote:
> On Tue, 14 Sep 2021, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> > On Tue, Sep 14, 2021 at 4:40 PM Jani Nikula <jani.nikula@intel.com> wrote:
> >> On Fri, 10 Sep 2021, Josh Triplett <josh@joshtriplett.org> wrote:
> >> > On Fri, Sep 10, 2021 at 03:00:58PM -0600, Jonathan Corbet wrote:
> >> >>  - What constitutes an acceptable user-space implementation in cases
> >> >>    where these restrictions apply?
> >> >
> >> > This seems like it'll always be a fuzzy line. The main issue: it's OK if
> >> > there are both open and proprietary users, but it's not OK if the only
> >> > open implementation is an outdated or token project that nobody actually
> >> > uses, that exists and is maintained solely for the purposes of placating
> >> > the kernel requirement. There's no easy way to define that line, other
> >> > than "we'll know it when we see it".
> >>
> >> One aspect of it should be easy enough: If you have an issue with your
> >> proprietary stack, but you can't reproduce it with the open stack, you
> >> won't get your fix in the kernel.
> >
> > Which basically boils down to the old mantra: before fixing a bug,
> > first add a new test case to trigger the bug.
>
> Oh, but then the question becomes, is it enough to add a reproducer,
> simplified from your proprietary stack, in your test asset, and then fix
> the kernel issue? Even if it's not a problem in your open stack at all?

I was thinking test ~ open stack.
I.e. enhance the open stack to reproduce the issue.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

  reply	other threads:[~2021-09-14 15:10 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-10 21:00 [MAINTAINER SUMMIT] User-space requirements for accelerator drivers Jonathan Corbet
2021-09-10 21:32 ` Josh Triplett
2021-09-13 13:50   ` Christian Brauner
2021-09-13 13:57     ` Daniel Vetter
2021-09-14  2:07       ` Laurent Pinchart
2021-09-14 14:40   ` Jani Nikula
2021-09-14 14:45     ` Geert Uytterhoeven
2021-09-14 14:59       ` Jani Nikula
2021-09-14 15:10         ` Geert Uytterhoeven [this message]
2021-09-10 21:51 ` James Bottomley
2021-09-10 21:59   ` Alexandre Belloni
2021-09-10 22:35     ` James Bottomley
2021-09-11 14:51       ` Jonathan Corbet
2021-09-11 15:24         ` James Bottomley
2021-09-11 21:52           ` Laurent Pinchart
2021-09-14 13:22             ` Johannes Berg
2021-09-11  0:08   ` Laurent Pinchart
2021-09-10 22:52 ` Mauro Carvalho Chehab
2021-09-10 23:45   ` Josh Triplett
2021-09-10 23:48     ` Dave Hansen
2021-09-11  0:13       ` Laurent Pinchart
2021-09-10 23:55     ` Thomas Gleixner
2021-09-11  0:20       ` Laurent Pinchart
2021-09-11 14:20         ` Steven Rostedt
2021-09-11 22:08           ` Laurent Pinchart
2021-09-11 22:42             ` Steven Rostedt
2021-09-11 23:10               ` Laurent Pinchart
2021-09-13 11:10               ` Mark Brown
2021-09-11 22:51           ` Mauro Carvalho Chehab
2021-09-11 23:22           ` Mauro Carvalho Chehab
2021-09-11 10:31       ` Leon Romanovsky
2021-09-11 11:41         ` Laurent Pinchart
2021-09-11 12:04           ` Leon Romanovsky
2021-09-11 22:04             ` Laurent Pinchart
2021-09-12  4:27               ` Leon Romanovsky
2021-09-12  7:26                 ` Greg KH
2021-09-12  8:29                   ` Leon Romanovsky
2021-09-12 13:25                     ` Greg KH
2021-09-12 14:15                       ` Leon Romanovsky
2021-09-12 14:34                         ` Greg KH
2021-09-12 16:41                           ` Laurent Pinchart
2021-09-12 20:35                           ` Dave Airlie
2021-09-12 20:41                           ` Dave Airlie
2021-09-12 20:49                             ` Daniel Vetter
2021-09-12 21:12                               ` Dave Airlie
2021-09-12 22:51                                 ` Linus Walleij
2021-09-12 23:15                                   ` Dave Airlie
2021-09-13 13:20                                   ` Arnd Bergmann
2021-09-13 13:54                                     ` Daniel Vetter
2021-09-13 22:04                                       ` Arnd Bergmann
2021-09-13 23:33                                         ` Dave Airlie
2021-09-14  9:08                                           ` Arnd Bergmann
2021-09-14  9:23                                             ` Daniel Vetter
2021-09-14 10:47                                               ` Laurent Pinchart
2021-09-14 12:58                                               ` Arnd Bergmann
2021-09-14 19:45                                                 ` Daniel Vetter
2021-09-14 15:43                                             ` Luck, Tony
2021-09-13 14:52                                     ` James Bottomley
2021-09-14 13:07                                     ` Linus Walleij
2021-09-13 14:03                           ` Mark Brown
2021-09-12 15:55                       ` Laurent Pinchart
2021-09-12 16:43                         ` James Bottomley
2021-09-12 16:58                           ` Laurent Pinchart
2021-09-12 17:08                             ` James Bottomley
2021-09-12 19:52                   ` Dave Airlie
2021-09-12  7:46                 ` Mauro Carvalho Chehab
2021-09-12  8:00                   ` Leon Romanovsky
2021-09-12 14:53                     ` Laurent Pinchart
2021-09-12 15:41                       ` Mauro Carvalho Chehab
2021-09-10 23:46   ` Laurent Pinchart
2021-09-11  0:38     ` Mauro Carvalho Chehab
2021-09-11  9:27       ` Laurent Pinchart
2021-09-11 22:33         ` Mauro Carvalho Chehab
2021-09-13 12:04         ` Mark Brown
2021-09-12 19:13 ` Dave Airlie
2021-09-12 19:48   ` Laurent Pinchart
2021-09-13  2:26     ` Dave Airlie

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