Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 52220372EED; Fri, 7 Aug 2026 15:14:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786115646; cv=none; b=j2U6Yv6qIZaQuv5q7P6SVw+zONPCbWGhff8dOSIQXGCbGxC/BHa3aVNc8nGHMSZe3fS/1U7z2vBiFwo8nDdJUDn76zS/+Gg+VhIV1qOi/R9kyaeI0WVekYFj8FSR0tfo6KZDbiTt5IOFP3H8MsS1Z+fKBPWtAVpwRwe2QIr8s/Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786115646; c=relaxed/simple; bh=PqKTrJzzxhdm4WEMlJf+tEeSSJ5yqfzVaUlYMKJY57A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kZT9bpNLeN8BOzsHXko49A4yju4zgQsbCjD0M5ekPzwoGac/uMslRSaCZo4UOgnNrir1WiRQ2+2fF0B89aEHEjT6R8ZrQL9qM63GTuC233sUFAWZXIGXmJ09hZhAlt80QnPkpCxkNO3Xs3TuMtxYLTVaITa+Mo1wVy3ssZWba80= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=YMzS/BW4; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="YMzS/BW4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6CA591F000E9; Fri, 7 Aug 2026 15:14:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786115645; bh=YT0D1ua8eizF7f7lvXexFLOCiloKy43rGINUKfclWyY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=YMzS/BW4zeIbu91QilnMgsW+dHfrrXzYOQSJJ/jSfhnl7BM7wtw3sdO/wn8HYPl7b BeNU0HVvPKLMJmngnVzSNtKQrDGpT0/UJekmTAcjA+DYB4fOv7SRkTfqzlbEDKj32d NVtrLPAm48ui6bW3efSX2VvTKMZYXJ8d3p7FvC5g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ashutosh Dixit , Umesh Nerlige Ramappa , Sasha Levin Subject: [PATCH 6.18 349/396] drm/xe/rtp: Toggle deny bit to (de-)whitelist OA regs Date: Fri, 7 Aug 2026 16:38:29 +0200 Message-ID: <20260807143431.814895409@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260807143424.272339768@linuxfoundation.org> References: <20260807143424.272339768@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ashutosh Dixit [ Upstream commit b422babd77fac2c96b92db484050e460899bddaf ] Whitelist or de-whitelist OA registers by setting or resetting the 'deny' bit in OA nonpriv registers and writing new register values to HW. Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support") Cc: stable@vger.kernel.org # v6.12+ Signed-off-by: Ashutosh Dixit Reviewed-by: Umesh Nerlige Ramappa Link: https://patch.msgid.link/20260615224227.34880-7-ashutosh.dixit@intel.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/xe/xe_reg_whitelist.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c index 4f7391d787fb0..4922b3561dbf4 100644 --- a/drivers/gpu/drm/xe/xe_reg_whitelist.c +++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c @@ -161,6 +161,21 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe) whitelist_apply_to_hwe(hwe, &hwe->oa_whitelist, &hwe->reg_sr, first_oa_slot); } +__maybe_unused static void __whitelist_oa_regs(struct xe_hw_engine *hwe, bool whitelist) +{ + struct xe_reg_sr_entry *entry; + unsigned long reg; + + xa_for_each(&hwe->oa_sr.xa, reg, entry) { + if (whitelist) + entry->set_bits &= ~RING_FORCE_TO_NONPRIV_DENY; + else + entry->set_bits |= RING_FORCE_TO_NONPRIV_DENY; + } + + xe_reg_sr_apply_mmio(&hwe->oa_sr, hwe->gt); +} + /** * xe_reg_whitelist_print_entry - print one whitelist entry * @p: DRM printer -- 2.53.0