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 A520ECA0EE8 for ; Wed, 17 Sep 2025 06:45:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4003710E408; Wed, 17 Sep 2025 06:45:28 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="mgLiqBLs"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id CB59410E408 for ; Wed, 17 Sep 2025 06:45:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758091527; x=1789627527; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=4zXbm1/v4fU7jVGsPkCoyyr22+Qd6hMAEJ9vDLXKLec=; b=mgLiqBLs/W8CHzAvkDtev0ZJIl/H+1G68+ajc6VYQ1CVlb8uK6QwFihr 83sQs11IwBVTRxTd0WiWqdAPM8DXnEQj7wy4inXMWyFAfOWH5jd81d4nS pXThXdupnKGqzWRGyiIJnSp5euersIPSLVSBtWtRaM3+hD28aTnefrRjM 5O5ZXsF04cXXWjBAydkgv+VKPGs8XOVXqIQY7Sj76VLEqvd2bSAKNzE4A A4Wvloev9+HEoQp6a1liZU74ji5UnrIr976NL6HwreiiIhzENjY2SwPHg m0rp5XtWJDoE3KizMLKHZ0RKmJ+di9AmUOI7cZ49+c2xb6EttuY3/TfHN Q==; X-CSE-ConnectionGUID: zwPl1IJ0SmSUrGT2B4XHXw== X-CSE-MsgGUID: r0pbHekdStS293xL6uBSwg== X-IronPort-AV: E=McAfee;i="6800,10657,11531"; a="60305123" X-IronPort-AV: E=Sophos;i="6.17,312,1747724400"; d="scan'208";a="60305123" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2025 23:45:03 -0700 X-CSE-ConnectionGUID: XsTy56L8R1KcxRI/BtPGAA== X-CSE-MsgGUID: GN9z2VslRE+30L6nSopsUQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,271,1751266800"; d="scan'208";a="174772887" Received: from black.igk.intel.com ([10.91.253.5]) by fmviesa007.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2025 23:44:59 -0700 Date: Wed, 17 Sep 2025 08:44:57 +0200 From: Raag Jadav To: Lucas De Marchi Cc: intel-xe@lists.freedesktop.org, Stuart Summers , Matt Roper , Riana Tauro , Rodrigo Vivi , Umesh Nerlige Ramappa , Tvrtko Ursulin Subject: Re: [PATCH v5 0/7] drm/xe: Add user commands to WA BB via configfs Message-ID: References: <20250916-wa-bb-cmds-v5-0-306bddbc15da@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250916-wa-bb-cmds-v5-0-306bddbc15da@intel.com> 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 Tue, Sep 16, 2025 at 02:15:37PM -0700, Lucas De Marchi wrote: > Integrate WA BB (aka post context restore bb) with configfs to allow > validation to experiment with the GPU, executing commands on every > context switch. > > Setting some registers to experiment: > > # echo 0 > /sys/bus/pci/drivers_autoprobe > # modprobe xe > # mkdir /sys/kernel/config/xe/0000:03:00.0 > # cat > /sys/kernel/config/xe/0000\:03\:00.0/ctx_restore_post_bb < bcs cmd 11000001 4F100 cafebabe > vcs cmd 11000001 4F104 0FF1CE > rcs cmd 11000001 4F108 BAADF00D I know, and I share your pain :D Raag