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_PASS autolearn=ham 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 15BA5C6778A for ; Sat, 7 Jul 2018 07:21:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B953D223E0 for ; Sat, 7 Jul 2018 07:21:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B953D223E0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752835AbeGGHVi (ORCPT ); Sat, 7 Jul 2018 03:21:38 -0400 Received: from mga12.intel.com ([192.55.52.136]:1597 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750990AbeGGHVh (ORCPT ); Sat, 7 Jul 2018 03:21:37 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 07 Jul 2018 00:21:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,319,1526367600"; d="scan'208";a="53252645" Received: from blu2-desk2.ccr.corp.intel.com (HELO [10.0.2.15]) ([10.239.13.1]) by fmsmga008.fm.intel.com with ESMTP; 07 Jul 2018 00:21:24 -0700 Subject: Re: [PATCH 3/4] iommu/vt-d: Clean up pasid quirk for pre-production devices To: Chris Wilson , David Woodhouse , Joerg Roedel References: <1525410499-18632-1-git-send-email-baolu.lu@linux.intel.com> <1525410499-18632-4-git-send-email-baolu.lu@linux.intel.com> <153094688126.17577.10340360451966114779@cwilso3-mobl.ger.corp.intel.com> Cc: ashok.raj@intel.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, "Balestrieri, Francesco" From: Lu Baolu Message-ID: <5B4069F5.1020303@linux.intel.com> Date: Sat, 7 Jul 2018 15:21:25 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: <153094688126.17577.10340360451966114779@cwilso3-mobl.ger.corp.intel.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Chris, On 07/07/2018 03:01 PM, Chris Wilson wrote: > Quoting Lu Baolu (2018-05-04 06:08:18) >> The pasid28 quirk is needed only for some pre-production devices. >> Remove it to make the code concise. > Every skylake mixing iommu and i915 is now inoperable on boot. Reads > by the GPU from iommu map pages return zero, writes disappear into the > void, no errors flagged. > > Please revert until the matter is resolved. Yes. I also got reports about the i915 issue. I will submit a revert patch as soon as possible. I am sorry for the inconvenience. Best regards, Lu Baolu