From: Daniel Vetter <daniel@ffwll.ch>
To: Adam Jackson <ajax@redhat.com>
Cc: "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>
Subject: Re: [RFC] GPU reset notification interface
Date: Wed, 18 Jul 2012 18:42:05 +0200 [thread overview]
Message-ID: <CAKMK7uFeJCNb-U7=62-2pvYNR1rUt0+usCV1y4P1tfaCTyjzYQ@mail.gmail.com> (raw)
In-Reply-To: <1342629383.3590.35.camel@atropine>
On Wed, Jul 18, 2012 at 6:36 PM, Adam Jackson <ajax@redhat.com> wrote:
> On Wed, 2012-07-18 at 09:23 -0700, Ian Romanick wrote:
>> On 07/18/2012 02:20 AM, Daniel Vetter wrote:
>> > A few things:
>> > - I agree with Chris that reset_in_progress should go, if userspace can
>> > sneak in and witness a reset event, we have a bug in the kernel. Since
>> > very recently, we actually have a few bugs less in that area ;-)
>>
>> I'm operating under the assumption that, from user space's perspective,
>> resets are not instantaneous. If resets are instantaneous, that may
>> change things.
>
> Do they need to be instantaneous, or do they merely need to be
> atomic-and-reasonably-quick? Could just block new ioctl submission
> until the reset completes.
That's actually what we already do, that "block ioctls until reset
completes thing" ;-)
-Daniel
--
Daniel Vetter
daniel.vetter@ffwll.ch - +41 (0) 79 364 57 48 - http://blog.ffwll.ch
next prev parent reply other threads:[~2012-07-18 16:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-17 22:16 [RFC] GPU reset notification interface Ian Romanick
2012-07-18 1:57 ` Ian Romanick
2012-07-18 7:06 ` Chris Wilson
2012-07-18 9:20 ` Daniel Vetter
2012-07-18 16:23 ` Ian Romanick
2012-07-18 16:36 ` Adam Jackson
2012-07-18 16:42 ` Daniel Vetter [this message]
2012-07-18 16:55 ` Daniel Vetter
2012-07-19 3:47 ` Ben Widawsky
2012-07-19 15:58 ` Ian Romanick
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