On 2023-01-25 14:53, Jonathan Kim wrote:
On GFX9.4.1, the implicit wait count instruction on s_barrier is
disabled by default in the driver during normal operation for
performance requirements.
There is a hardware bug in GFX9.4.1 where if the implicit wait count
instruction after an s_barrier
-debug-and-runtime-enable-interface/20230128-092952
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
patch link:
https://lore.kernel.org/r/20230125195401.4183544-8-jonathan.kim%40amd.com
patch subject: [PATCH 07/32] drm/amdgpu: add gfx9.4.1 hw debug mode enable and
disable calls
config
On GFX9.4.1, the implicit wait count instruction on s_barrier is
disabled by default in the driver during normal operation for
performance requirements.
There is a hardware bug in GFX9.4.1 where if the implicit wait count
instruction after an s_barrier instruction is disabled, any wave that
hits
