From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DCAD4C56201 for ; Wed, 5 Aug 2026 10:33:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 88BF710E1DC; Wed, 5 Aug 2026 10:33:30 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="GQEydVBv"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 394A910E1DC for ; Wed, 5 Aug 2026 10:33:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1785926008; x=1817462008; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=yoYA04IoQA7jbFUcBhNJH473za9qOl/7JYDPgFmVd04=; b=GQEydVBvfyC4mZs5wkkiDYBZIPFTQCTDx79mtfm4uv58AmihPtd36ubj DXWccqu0hZbih1XRRSFNlvSztxn8AqVTGOoZSfy0YiYKNlPWsD2Zd4nFZ hyDO/xr8R/sFsMyLi62rqspwdomePN2QBfID3KFYAGvCs8hEnhKPnK9dR vFVG4txV5auDqqJ6WEwQFAJHM5n4GSL+tOLCLYE0z80WpSP1o5lgYnD/6 znBOO5S6bxSOb/GGViFKPkp/wkHAgCp3PVAF2vw98unwKj8dtw4fyHf2g y4Ulih8lYKH6LzgbJBOcQ5MaQDkAAssniDs+5VW10n3o1AIcD4ou+UrC3 w==; X-CSE-ConnectionGUID: xDankZp/QNOiCIpD/pMx3g== X-CSE-MsgGUID: 6hxHmFVVSg++MoEUo42jdA== X-IronPort-AV: E=McAfee;i="6800,10657,11865"; a="86506339" X-IronPort-AV: E=Sophos;i="6.25,206,1779174000"; d="scan'208";a="86506339" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2026 03:33:27 -0700 X-CSE-ConnectionGUID: riTWNnL5QVSqPFmMdAuiCA== X-CSE-MsgGUID: i4J5FhNQTWuJQdFMjyfKdQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,206,1779174000"; d="scan'208";a="263762317" Received: from smoticic-mobl1.ger.corp.intel.com (HELO [10.245.244.90]) ([10.245.244.90]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2026 03:30:47 -0700 Message-ID: <88b53afb-d7c1-4da1-9708-d0843be27b6d@intel.com> Date: Wed, 5 Aug 2026 11:30:44 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 1/3] drm/xe/guc_ads: allocate UM queues in a separate BO To: Jia Yao , intel-xe@lists.freedesktop.org Cc: Gwan-gyeong Mun , stable@vger.kernel.org References: <20260804165057.129529-1-jia.yao@intel.com> <20260804165057.129529-2-jia.yao@intel.com> Content-Language: en-GB From: Matthew Auld In-Reply-To: <20260804165057.129529-2-jia.yao@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On 04/08/2026 17:50, Jia Yao wrote: > Move the UM queues into a dedicated UC BO (ads->um_queue_bo) and avoid > CPU memset operations on it, which eliminates the CPU as a potential > cacheline-polluting agent and helps maintain consistency between GAM > writes and GuC reads. > > Fixes: 9c57bc08652a ("drm/xe/lnl: Drop force_probe requirement") > Cc: Gwan-gyeong Mun > Cc: Matthew Auld > Cc: # v6.12+ > Signed-off-by: Jia Yao Reviewed-by: Matthew Auld