Re: [Intel-gfx] [PATCH 15/21] drm/i915/gtt: Fill scratch page

2015-06-11 Thread Mika Kuoppala
Tomas Elf writes: > On 22/05/2015 18:05, Mika Kuoppala wrote: >> During review of dynamic page tables series, I was able >> to hit a lite restore bug with execlists. I assume that >> due to incorrect pd, the batch run out of legit address space >> and into the scratch page area. The ACTHD was inc

Re: [Intel-gfx] [PATCH 15/21] drm/i915/gtt: Fill scratch page

2015-06-04 Thread Chris Wilson
On Thu, Jun 04, 2015 at 12:08:17PM +0100, Tomas Elf wrote: > On 01/06/2015 16:53, Chris Wilson wrote: > >On Wed, May 27, 2015 at 07:12:02PM +0100, Tomas Elf wrote: > >>On 22/05/2015 18:05, Mika Kuoppala wrote: > >>>During review of dynamic page tables series, I was able > >>>to hit a lite restore b

Re: [Intel-gfx] [PATCH 15/21] drm/i915/gtt: Fill scratch page

2015-06-04 Thread Tomas Elf
On 01/06/2015 16:53, Chris Wilson wrote: On Wed, May 27, 2015 at 07:12:02PM +0100, Tomas Elf wrote: On 22/05/2015 18:05, Mika Kuoppala wrote: During review of dynamic page tables series, I was able to hit a lite restore bug with execlists. I assume that due to incorrect pd, the batch run out of

Re: [Intel-gfx] [PATCH 15/21] drm/i915/gtt: Fill scratch page

2015-06-03 Thread Michel Thierry
On 5/22/2015 6:05 PM, Mika Kuoppala wrote: During review of dynamic page tables series, I was able to hit a lite restore bug with execlists. I assume that due to incorrect pd, the batch run out of legit address space and into the scratch page area. The ACTHD was increasing due to scratch being al

Re: [Intel-gfx] [PATCH 15/21] drm/i915/gtt: Fill scratch page

2015-06-01 Thread Chris Wilson
On Wed, May 27, 2015 at 07:12:02PM +0100, Tomas Elf wrote: > On 22/05/2015 18:05, Mika Kuoppala wrote: > >During review of dynamic page tables series, I was able > >to hit a lite restore bug with execlists. I assume that > >due to incorrect pd, the batch run out of legit address space > >and into t

Re: [Intel-gfx] [PATCH 15/21] drm/i915/gtt: Fill scratch page

2015-05-27 Thread Tomas Elf
On 22/05/2015 18:05, Mika Kuoppala wrote: During review of dynamic page tables series, I was able to hit a lite restore bug with execlists. I assume that due to incorrect pd, the batch run out of legit address space and into the scratch page area. The ACTHD was increasing due to scratch being all

[Intel-gfx] [PATCH 15/21] drm/i915/gtt: Fill scratch page

2015-05-22 Thread Mika Kuoppala
During review of dynamic page tables series, I was able to hit a lite restore bug with execlists. I assume that due to incorrect pd, the batch run out of legit address space and into the scratch page area. The ACTHD was increasing due to scratch being all zeroes (MI_NOOPs). And as gen8 address spac