2012/2/23 Mathias Fröhlich Mathias.Froehlich@gmx.net
Christian,
On Thursday, February 23, 2012 15:18:42 Christian König wrote:
The function radeon_bo_list_validate can cause a bo to move, resulting in a different sync_obj and a dependency to wait for this move to finish.
Signed-off-by: Christian König deathsimple@vodafone.de Reviewed-by: Alex Deucher alexander.deucher@amd.com
I am not sure, but to me this looks like this could fix these kind of gpu lockups that I experience since some time every now and then. The usual symptom is that I get the
radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec GPU lockup (waiting for 0x00682AC3 last fence id 0x00682AC2) [...]
kernel message. Each time with the fence being off by one like in the example above.
If this change has the potential to fix this issue I think this particular patch should be considered for the current upstream kernel release.
Mathias
No this patch doesn't. This patch is all about getting proper sync btw different rings.
Sorry for the deception.
Cheers, Jerome