Re: [PATCH] drm/xe/xe2_hpg: Apply Wa_14024997852

["Yadav, Arvind" <arvind.yadav@intel.com>]

On 10-02-2026 01:53, Matt Roper wrote:
> On Thu, Feb 05, 2026 at 10:38:18AM +0530, Arvind Yadav wrote:
>> Applied Wa_14024997852 to Graphics version 20.02
>>
>> Cc: Nitin Gote <nitin.r.gote@intel.com>
>> Cc: Tejas Upadhyay <tejas.upadhyay@intel.com>
>> Signed-off-by: Arvind Yadav <arvind.yadav@intel.com>
>> ---
>>   drivers/gpu/drm/xe/xe_wa.c | 11 +++++++++++
>>   1 file changed, 11 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
>> index 1e8d61ac581b..2f838c99596f 100644
>> --- a/drivers/gpu/drm/xe/xe_wa.c
>> +++ b/drivers/gpu/drm/xe/xe_wa.c
>> @@ -874,6 +874,17 @@ static const struct xe_rtp_entry_sr lrc_was[] = {
>>   	  XE_RTP_ACTIONS(SET(COMMON_SLICE_CHICKEN1, DISABLE_BOTTOM_CLIP_RECTANGLE_TEST))
>>   	},
>>   
>> +	{ XE_RTP_NAME("14024997852"),
>> +	  XE_RTP_RULES(GRAPHICS_VERSION(2002), GRAPHICS_STEP(A0, B0),
>> +		       ENGINE_CLASS(RENDER)),
>> +	  XE_RTP_ACTIONS(SET(FF_MODE,
>> +			     DIS_MESH_PARTIAL_AUTOSTRIP |
>> +			     DIS_MESH_AUTOSTRIP),
>> +			 SET(VFLSKPD,
>> +			     DIS_PARTIAL_AUTOSTRIP |
>> +			     DIS_AUTOSTRIP))
> This workaround asks that these settings be programmed only in specific
> cases (primitive ID enabled || cut index enabled).  That's referring to
> 3D state that's controlled by the UMD and may change on a batch-by-batch
> basis.  So we shouldn't be doing this programming directly in the
> kernel, otherwise it will be in effect even at times we don't want it to
> be.  Instead we just need to whitelist these registers to allow the UMD
> to make the necessary changes on the fly.
>
> We already whitelist these for the Xe3 platforms; the necessary change
> is to also extend that whitelisting back to some of the Xe2 IPs.


Noted, sorry I missed the comment. I will send v3 by whitelisting this.

Thanks,
Arvind

>
>
> Matt
>
>> +	},
>> +
>>   	/* Xe3_LPG */
>>   	{ XE_RTP_NAME("14021490052"),
>>   	  XE_RTP_RULES(GRAPHICS_VERSION(3000), GRAPHICS_STEP(A0, B0),
>> -- 
>> 2.43.0
>>