From: Guenter Roeck <linux@roeck-us.net>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Intel graphics driver community testing & development
<intel-gfx@lists.freedesktop.org>
Subject: Re: [CI, v3, 1/2] drm/i915: Prevent a race during I915_GEM_MMAP ioctl with WC set
Date: Thu, 28 Feb 2019 16:15:02 -0800 [thread overview]
Message-ID: <20190301001502.GA21961@roeck-us.net> (raw)
In-Reply-To: <155139326079.5847.8668846831954153298@skylake-alporthouse-com>
On Thu, Feb 28, 2019 at 10:34:20PM +0000, Chris Wilson wrote:
> Quoting Guenter Roeck (2019-02-28 22:27:35)
> > On Thu, Feb 28, 2019 at 10:18:32PM +0000, Chris Wilson wrote:
> > >
> > > If you have userspace that is broken, we need to fix it. We can get away
> > > with quietly changing ABI only so long as nobody notices. It sounds like
> > > you have some userspace that will break if you updated the kernel; ergo
> > > we have a problem.
> > >
> > > We just need that as a clear statement so that we have the user impact
> > > recorded.
> >
> > Yes, it does break our userspace code. I fixed the problem in our kernels
> > with the following patch:
> >
> And what userspace is that? Details for the log, please.
Internal agreement is that we'll fix our userspace code.
Guenter
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prev parent reply other threads:[~2019-03-01 0:15 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-07 8:54 [CI v3 1/2] drm/i915: Prevent a race during I915_GEM_MMAP ioctl with WC set Joonas Lahtinen
2019-02-07 8:54 ` [CI v3 2/2] drm/i915: Handle vm_mmap error " Joonas Lahtinen
2019-02-07 9:29 ` ✓ Fi.CI.BAT: success for series starting with [CI,v3,1/2] drm/i915: Prevent a race " Patchwork
2019-02-07 11:52 ` ✓ Fi.CI.IGT: " Patchwork
2019-02-28 19:12 ` [CI, v3, 1/2] " Guenter Roeck
2019-02-28 21:32 ` Guenter Roeck
2019-02-28 21:48 ` Chris Wilson
2019-02-28 21:57 ` Guenter Roeck
2019-02-28 22:01 ` Chris Wilson
2019-02-28 22:11 ` Guenter Roeck
2019-02-28 22:18 ` Chris Wilson
2019-02-28 22:27 ` Guenter Roeck
2019-02-28 22:34 ` Chris Wilson
2019-03-01 0:15 ` Guenter Roeck [this message]
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