From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: intel-gfx@lists.freedesktop.org, stable@kernel.org
Subject: Re: [PATCH] drm/i915: Kill dangerous pending-flip debugging
Date: Sat, 15 May 2010 09:31:17 -0700 [thread overview]
Message-ID: <20100515093117.254dfb1b@blake> (raw)
In-Reply-To: <1273913823-29591-1-git-send-email-chris@chris-wilson.co.uk>
On Sat, 15 May 2010 09:57:03 +0100
Chris Wilson <chris@chris-wilson.co.uk> wrote:
> We can, by virtue of a vblank interrupt firing in the middle of
> setting up the unpin work (i.e. after we set the unpin_work field and
> before we write to the ringbuffer) enter intel_finish_page_flip()
> prior to receiving the pending flip notification. Therefore we can
> expect to hit intel_finish_page_flip() under normal circumstances
> without a pending flip and even without installing the
> pending_flip_obj. This is exacerbated by aperture thrashing whilst
> binding the framebuffer
>
> References:
>
> Bug 28079 - "glresize" causes kernel panic in
> intel_finish_page_flip.
> https://bugs.freedesktop.org/show_bug.cgi?id=28079
Yeah, that's true. Good catch.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
next prev parent reply other threads:[~2010-05-15 16:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-15 8:57 [PATCH] drm/i915: Kill dangerous pending-flip debugging Chris Wilson
2010-05-15 16:31 ` Jesse Barnes [this message]
2010-05-26 21:12 ` Eric Anholt
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