Quoting Chris Wilson (2020-07-23 18:41:44) > Whether this is an arbitrary stall or a vital ingredient, neverthess the > impact is noticeable. If we do not have the stall around the xcs > invalidation before a request, writes within that request sometimes go > astray. > > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2169 > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/gt/intel_lrc.c | 18 ++++++++++++------ > 1 file changed, 12 insertions(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c > index 353b1717fe84..7767459549a5 100644 > --- a/drivers/gpu/drm/i915/gt/intel_lrc.c > +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c > @@ -4761,10 +4761,12 @@ static int gen12_emit_flush_render(struct i915_request *request, > > static int gen12_emit_flush(struct i915_request *request, u32 mode) > { > +#define WA_CNT 12 /* Magic delay or size of some internal pipelined buffer? */ 12 is not enough. I repeat, 12 is not enough. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
