Re: Regression since 53984635a659e360f206a81ada4ae813152d72f1 (drm/i915: use the complete gtt)

[Peter Clifton <pcjc2@cam.ac.uk>]

On Tue, 2010-11-09 at 18:56 +0000, Chris Wilson wrote:

> Do you have a test case that I can run? I've been beating upon this using
> i945, pnv, q35 and g45 for quite some time and found it to be stable (for
> my uses at least).

Nothing small, but if you're prepared to do build something more
complex:

git://repo.or.cz/geda-pcb/pcjc2.git

Build from the "local_customisation_no_pours" branch.

(With stgit I'm lazy about making "proper" feature branches ;)). Note
that I rebase this branch a lot, as it is from a stgit series.


I'll send you the PCB layout I've been testing it with privately.

Steps to reproduce are:

1. Load the board.
2. Drag the white / black (depends on your theme) circular control on
the left hand bar. This is a track-ball.
3. Drag like crazy, perhaps stop for a little bit. Drag again.

Eventually it hangs when the full GTT is in use.

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)