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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C667C10F27 for ; Mon, 9 Mar 2020 17:02:36 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 76DE1208C3 for ; Mon, 9 Mar 2020 17:02:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 76DE1208C3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 19DEB6E063; Mon, 9 Mar 2020 17:02:36 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7507F6E063 for ; Mon, 9 Mar 2020 17:02:35 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Mar 2020 10:02:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,534,1574150400"; d="scan'208";a="265316237" Received: from irsmsx106.ger.corp.intel.com ([163.33.3.31]) by fmsmga004.fm.intel.com with ESMTP; 09 Mar 2020 10:02:34 -0700 Received: from irsmsx601.ger.corp.intel.com (163.33.146.7) by IRSMSX106.ger.corp.intel.com (163.33.3.31) with Microsoft SMTP Server (TLS) id 14.3.439.0; Mon, 9 Mar 2020 17:02:33 +0000 Received: from irsmsx601.ger.corp.intel.com (163.33.146.7) by irsmsx601.ger.corp.intel.com (163.33.146.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Mon, 9 Mar 2020 17:02:33 +0000 Received: from irsmsx601.ger.corp.intel.com ([163.33.146.7]) by irsmsx601.ger.corp.intel.com ([163.33.146.7]) with mapi id 15.01.1713.004; Mon, 9 Mar 2020 17:02:33 +0000 From: "Mrozek, Michal" To: "Antognolli, Rafael" , Tvrtko Ursulin Thread-Topic: [PATCH] drm/i915/tgl: WaDisableGPGPUMidThreadPreemption Thread-Index: AQHV8joOatT4aMfviEm7rDbzx46lAag4mDuAgAfq25A= Date: Mon, 9 Mar 2020 17:02:33 +0000 Message-ID: <299e1f69592d48a7a4e964b6a3d2e7d1@intel.com> References: <20200304153144.10675-1-tvrtko.ursulin@linux.intel.com> <20200304160245.ewy55e2iqtcey6vs@rantogno-mobl4.amr.corp.intel.com> In-Reply-To: <20200304160245.ewy55e2iqtcey6vs@rantogno-mobl4.amr.corp.intel.com> Accept-Language: pl-PL, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.2.0.6 dlp-reaction: no-action x-originating-ip: [163.33.253.164] MIME-Version: 1.0 Subject: Re: [Intel-gfx] [PATCH] drm/i915/tgl: WaDisableGPGPUMidThreadPreemption X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Zdunowski, Piotr" , "Intel-gfx@lists.freedesktop.org" , "Ekstrand, Jason" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" >>But he asked whether it's possible for Media and OpenCL drivers to also disable mid-thread preemption through the INTERFACE_DESCRIPTOR_DATA, instead of from the >>kernel side, so we could try to experiment with it in the future. Interface Descriptor setting only switches the preemption from mid thread to thread group. It doesn't allow to disable it completely and there are cases where this is required (i.e. VME). For that we need mmio whitelist. Michal _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx