From e5db97a30594e6b6406b7721d8a734df7af80c2c Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Fri, 6 Feb 2026 15:36:03 -0300 Subject: [PATCH] drm/xe/xe3p_lpg: Disable reporting of context switch status to GHWSP By default the hardware reports context switch status into the global hardware status page. The Xe driver doesn't use this information for anything, and as of Xe3p, leaving this setting enabled will prevent other hardware optimizations from being enabled. Disable this reporting as suggested by the tuning guide. Bspec: 72161 Signed-off-by: Matt Roper Reviewed-by: Matt Atwood Link: https://patch.msgid.link/20260206-nvl-p-upstreaming-v3-7-636e1ad32688@intel.com Signed-off-by: Gustavo Sousa --- drivers/gpu/drm/xe/xe_tuning.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_tuning.c b/drivers/gpu/drm/xe/xe_tuning.c index 5766fa7742d3..a97872b3214b 100644 --- a/drivers/gpu/drm/xe/xe_tuning.c +++ b/drivers/gpu/drm/xe/xe_tuning.c @@ -10,6 +10,7 @@ #include #include +#include "regs/xe_engine_regs.h" #include "regs/xe_gt_regs.h" #include "xe_gt_types.h" #include "xe_platform_types.h" @@ -107,6 +108,12 @@ static const struct xe_rtp_entry_sr engine_tunings[] = { FUNC(xe_rtp_match_first_render_or_compute)), XE_RTP_ACTIONS(SET(RT_CTRL, DIS_NULL_QUERY)) }, + { XE_RTP_NAME("Tuning: disable HW reporting of ctx switch to GHWSP"), + XE_RTP_RULES(GRAPHICS_VERSION_RANGE(3500, XE_RTP_END_VERSION_UNDEFINED)), + XE_RTP_ACTIONS(SET(CSFE_CHICKEN1(0), + GHWSP_CSB_REPORT_DIS, + XE_RTP_ACTION_FLAG(ENGINE_BASE))) + }, }; static const struct xe_rtp_entry_sr lrc_tunings[] = {