From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: Herbert Xu <herbert@gondor.hengli.com.au>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Zou Nan hai <nanhai.zou@intel.com>,
Xiang Hai hao <haihao.xiang@intel.com>,
Eric Anholt <eric@anholt.net>,
Chris Wilson <chris@chris-wilson.co.uk>
Subject: Re: i915 completely broken with KMS off
Date: Tue, 18 Jan 2011 09:16:46 -0800 [thread overview]
Message-ID: <20110118091646.73a5014c@jbarnes-desktop> (raw)
In-Reply-To: <20110118115701.GA11952@gondor.apana.org.au>
On Tue, 18 Jan 2011 22:57:01 +1100
Herbert Xu <herbert@gondor.apana.org.au> wrote:
> Hi:
>
> I just upgraded my kernel on a machine with i915 and it has
> started crashing constantly with messages like this:
[snip]
> The cause is this changeset:
>
> commit 8187a2b70e34c727a06617441f74f202b6fefaf9
> Author: Zou Nan hai <nanhai.zou@intel.com>
> Date: Fri May 21 09:08:55 2010 +0800
>
> drm/i915: introduce intel_ring_buffer structure (V2)
>
> This changeset completely broke i915 without KMS because the new
> intel_ring_buffer structure is never initialised with KMS off,
> unless the ioctl I915_GEM_ENTERVT is invoked.
>
> So without invoking that ioctl, the kernel will always crash
> whenever the i915 driver dereferences pointers on the render_ring
> data structure.
>
> Or is this a hint to get people to convert to KMS :)
Heh, well that would be one option for you. :)
The breakage was unintentional though; I imagine Chris will have an
idea of how to fix it quickly for you.
--
Jesse Barnes, Intel Open Source Technology Center
next prev parent reply other threads:[~2011-01-18 17:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-18 11:57 Herbert Xu
2011-01-18 17:16 ` Jesse Barnes [this message]
2011-01-18 17:24 ` [PATCH] drm/i915: Correctly test for an initialised ring for dri1 Chris Wilson
2011-01-19 3:24 ` Herbert Xu
2011-01-19 9:53 ` [PATCH] drm/i915: Initialise ring vfuncs for old DRI paths Chris Wilson
2011-01-19 10:31 ` Herbert Xu
2011-01-20 7:05 ` Herbert Xu
2011-01-20 9:56 ` [PATCH] drm/i915: Don't kick-off hangcheck after a DRI interrupt Chris Wilson
2011-01-20 10:10 ` Herbert Xu
2011-01-20 11:00 ` [PATCH] drm/i915: Dont " Chris Wilson
2011-01-20 11:35 ` Herbert Xu
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