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 507E11061B07 for ; Mon, 30 Mar 2026 14:59:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EDD5510E1E0; Mon, 30 Mar 2026 14:59:03 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="aFSddd5B"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id BAACA10E1E0 for ; Mon, 30 Mar 2026 14:58:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774882737; x=1806418737; h=message-id:date:mime-version:subject:to:references:from: in-reply-to:content-transfer-encoding; bh=WuCC2NlPbAr5OJtrE4anQxyotNqv1rsm3gKlt8NhjdY=; b=aFSddd5Bcu6zLcRcDZ74ceyMt3owzOtn+VZfXgqYaUOjkmXkzJAiPp0c zHRRmlDF+aFKoTNNCc5hOewpUh09Em/aZbopPOkeCSyXdl9QwvpTpnFDT 5KnS7ZnmLxRWg1EzpWbbpeXKhC2djIw/xIKI6LW+x8d5v7Q1Admp+0wPc TteXYpE0IgO8OFB36VFYXCs2oaJP1WnljnP02XXoeW0FUiEC6sBuXtkh5 WbQuxGgcdMgJ+RsAyWgFdNtpviXENV7qoluSQSRjyGxgs3ZsQqPjCZ9gy CYj0V6LBW2X5RUrUCa3SbotE/XaMp4zCmWP9hZMik67h1aBLAfb1GTWlg w==; X-CSE-ConnectionGUID: hyi51YDhRe2kTlwDp2u3Yg== X-CSE-MsgGUID: m9WkDj5ZTYWctyMUgADTdQ== X-IronPort-AV: E=McAfee;i="6800,10657,11743"; a="75894643" X-IronPort-AV: E=Sophos;i="6.23,150,1770624000"; d="scan'208";a="75894643" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2026 07:58:56 -0700 X-CSE-ConnectionGUID: b0gukOtcQyiMznEX4zxwww== X-CSE-MsgGUID: EI9sofyUTGWl1/HzTyff4g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,150,1770624000"; d="scan'208";a="249132171" Received: from dhhellew-desk2.ger.corp.intel.com (HELO [10.245.245.123]) ([10.245.245.123]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2026 07:58:55 -0700 Message-ID: <10e1cafd-0664-4d7b-87fb-5ce34c8e8e18@intel.com> Date: Mon, 30 Mar 2026 15:58:53 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH i-g-t v4 3/5] lib/intel_pat: Set PTA + ATS PAT entries to invalid value To: =?UTF-8?Q?Zbigniew_Kempczy=C5=84ski?= , igt-dev@lists.freedesktop.org References: <20260330144032.1954771-7-zbigniew.kempczynski@intel.com> <20260330144032.1954771-10-zbigniew.kempczynski@intel.com> Content-Language: en-GB From: Matthew Auld In-Reply-To: <20260330144032.1954771-10-zbigniew.kempczynski@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" On 30/03/2026 15:40, Zbigniew Kempczyński wrote: > Some platforms (like LNL) requires PTA PAT entries shouldn't be > programmed and default register value should be used. > > Setting this to max during parsing pat_sw_config or pat debugfs > allows detect these platforms and ignore some actions if necessary. > > Signed-off-by: Zbigniew Kempczyński > Cc: Matthew Auld Reviewed-by: Matthew Auld