Re: [PATCH 1/1] drm/xe/xe2lpg: Extend Wa_18041344222 to graphics IP 20.04

[Harish Chegondi <harish.chegondi@intel.com>]

On Tue, Jan 27, 2026 at 12:50:04PM -0800, Matt Roper wrote:
> On Mon, Jan 26, 2026 at 11:49:50PM -0800, Harish Chegondi wrote:
> > Apply WA 18041344222 to Xe2 LPG graphics IP version 20.04 too.
> > 
> > Bspec: 56024
> > Cc: Matt Roper <matthew.d.roper@intel.com>
> > Cc: Gustavo Sousa <gustavo.sousa@intel.com>
> > Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
> > ---
> >  drivers/gpu/drm/xe/xe_wa.c | 7 +++++++
> >  1 file changed, 7 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
> > index a991ee2b8781..1153a7363cff 100644
> > --- a/drivers/gpu/drm/xe/xe_wa.c
> > +++ b/drivers/gpu/drm/xe/xe_wa.c
> > @@ -535,6 +535,13 @@ static const struct xe_rtp_entry_sr engine_was[] = {
> >  		       FUNC(xe_rtp_match_first_render_or_compute)),
> >  	  XE_RTP_ACTIONS(SET(TDL_TSL_CHICKEN, RES_CHK_SPR_DIS))
> >  	},
> > +	{ XE_RTP_NAME("18041344222"),
> > +	  XE_RTP_RULES(GRAPHICS_VERSION(2004),
> > +		       FUNC(xe_rtp_match_first_render_or_compute),
> > +		       FUNC(xe_rtp_match_not_sriov_vf),
> 
> We don't need this; nothing on the engine_was[] list applied to SRIOV
> VFs so we never apply any of them.  This RTP match function is intended
> for OOB functions (and possibly LRC workarounds).

I submitted a patch series https://patchwork.freedesktop.org/series/160865/
to remove the RTP match function xe_rtp_match_not_sriov_vf() from the
earlier WA patches and the SRIOV IGT tests are failing.

Michal mentioned that with the below patch, WAs are applied for VFs
92a5bd302458a1663 (drm/xe/vf: Unblock xe_rtp_process_to_sr for VFs)

Thank You
Harish.

> 
> 
> Matt
> 
> > +		       FUNC(xe_rtp_match_gt_has_discontiguous_dss_groups)),
> > +	  XE_RTP_ACTIONS(SET(TDL_CHICKEN, EUSTALL_PERF_SAMPLING_DISABLE))
> > +	},
> >  
> >  	/* Xe2_HPG */
> >  
> > -- 
> > 2.43.0
> > 
> 
> -- 
> Matt Roper
> Graphics Software Engineer
> Linux GPU Platform Enablement
> Intel Corporation