On Tue, 2010-11-09 at 18:22 +0000, Peter Clifton wrote:
> commit 53984635a659e360f206a81ada4ae813152d72f1
> Author: Daniel Vetter <daniel.vet...@ffwll.ch>
> Date: Wed Sep 22 23:44:24 2010 +0200
>
> drm/i915: use the complete gtt
>
> At least the part that's currently enabled by the BIOS.
>
> Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
> Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
>
>
> Since the above commit, my GL app will crash after a period of sustained
> graphics activity. It appears to use quite a lot of small BOs for
> uploading changed VBO data with glBufferSubData, and I don't think these
> are being purged until the GTT is full.
I can also work around the crash by ensuring nothing gets into unmapable
areas:
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 7c91bf2..d014cd6 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3538,6 +3538,7 @@ i915_gem_execbuffer_pin(struct drm_device *dev,
/* g33/pnv can't fence buffers in the unmappable part */
bool need_mappable =
entry->relocation_count ? true : need_fence;
+ need_mappable = true;
/* Check fence reg constraints and rebind if necessary
*/
if (need_mappable && !obj->map_and_fenceable) {
--
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)
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