On Thu, Jul 11, 2024 at 10:00:21AM +, Vladimir Lypak wrote:
> There is another cause for soft lock-up of GPU in empty ring-buffer:
> race between GPU executing last commands and CPU checking ring for
> emptiness. On GPU side IRQ for retire is triggered by CACHE_FLUSH_TS
> event and RPTR shadow
There is another cause for soft lock-up of GPU in empty ring-buffer:
race between GPU executing last commands and CPU checking ring for
emptiness. On GPU side IRQ for retire is triggered by CACHE_FLUSH_TS
event and RPTR shadow (which is used to check ring emptiness) is updated
a bit later from CP_C
