FAILED: patch "[PATCH] drm/xe/rtp: Save OA nonpriv registers to register" failed to apply to 7.2-stable tree

The patch below does not apply to the 7.2-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-7.2.y
git checkout FETCH_HEAD
git cherry-pick -x 3a3c3e56db2923daaf1a5353cd6463a4cdaf4ffa
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2026090914-pointing-dispersal-c779@gregkh' --subject-prefix 'PATCH 7.2.y' 'HEAD^..'

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 3a3c3e56db2923daaf1a5353cd6463a4cdaf4ffa Mon Sep 17 00:00:00 2001
From: Ashutosh Dixit <[email protected]>
Date: Mon, 15 Jun 2026 15:42:23 -0700
Subject: [PATCH] drm/xe/rtp: Save OA nonpriv registers to register
save/restore lists

Now we can save OA whitelisting nonpriv registers to register save/restore lists. OA nonpriv registers are saved to both hwe->oa_sr as well as hwe->reg_sr.

During probe, resume and gt-reset flows KMD will apply hwe->reg_sr, ensuring OA registers are de-whitelisted after these events. For engine-reset, hwe->reg_sr is registered with GuC and GuC will apply these registers, ensuring OA registers are de-whitelisted after engine resets.

hwe->oa_sr is used for whitelisting or de-whitelisting OA registers during OA operation, by toggling the 'deny' bit on oa stream open/close.

index e9d0a0b82527..76ac23644a4d 100644
@@ -215,6 +215,18 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
 	first_oa_slot = whitelist_apply_to_hwe(hwe, &hwe->reg_whitelist, &hwe->reg_sr, 0);
 
 	xe_rtp_process_to_sr(&ctx, &oa_whitelist, &hwe->oa_whitelist, false);
+
+	/*
+	 * Save oa nonpriv registers to hwe->oa_sr, from which oa registers are whitelisted
+	 * or de-whitelisted, by toggling the 'deny' bit on oa stream open/close
+	 */
+	whitelist_apply_to_hwe(hwe, &hwe->oa_whitelist, &hwe->oa_sr, first_oa_slot);
+
+	/*
+	 * Also save oa nonpriv registers to hwe->reg_sr, to ensure oa registers are not
+	 * whitelisted by default after probe, gt reset, resume and engine reset
+	 */
+	whitelist_apply_to_hwe(hwe, &hwe->oa_whitelist, &hwe->reg_sr, first_oa_slot);
 }
 
 /**