Re: Intel 965G: i915_dispatch_cmdbuffer failed (2.6.19-rc2)

From: Ryan Richter
Date: Thu Oct 19 2006 - 13:31:30 EST


On Wed, Oct 18, 2006 at 07:54:41AM +0100, Keith Whitwell wrote:
> This is all a little confusing as the driver doesn't really use that
> path in normal operation except for a single command - MI_FLUSH, which
> is shared between the architectures. In normal operation the hardware
> does the validation for us for the bulk of the command stream. If there
> were missing functionality in that ioctl, it would be failing
> everywhere, not just in this one case.
>
> I guess the questions I'd have are
> - did the driver work before the kernel upgrade?
> - what path in userspace is seeing you end up in this ioctl?
> - and like Keith, what commands are you seeing?
>
> The final question is interesting not because we want to extend the
> ioctl to cover those, but because it will give a clue how you ended up
> there in the first place.

Here's a list of all the failing commands I've seen so far:

3a440003
d70003
2d010003
e5b90003
2e730003
8d8c0003
c10003
d90003
be0003
1e3f0003

-ryan
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