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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 3365AC4727D for ; Thu, 24 Sep 2020 20:03:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D395E2344C for ; Thu, 24 Sep 2020 20:03:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726267AbgIXUDq (ORCPT ); Thu, 24 Sep 2020 16:03:46 -0400 Received: from mga06.intel.com ([134.134.136.31]:36015 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726037AbgIXUDp (ORCPT ); Thu, 24 Sep 2020 16:03:45 -0400 IronPort-SDR: IYli325ji+G4uJN/1ubvmQ8ogzuOh+c4D1Rr4sMvS1CWrEndxryWZMBISOC7US1n5w+ZzqYNlV /NHt26KYavnw== X-IronPort-AV: E=McAfee;i="6000,8403,9754"; a="222927111" X-IronPort-AV: E=Sophos;i="5.77,299,1596524400"; d="scan'208";a="222927111" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2020 13:03:36 -0700 IronPort-SDR: rE7k9Y2C1CZ+onZsdxfwq3rMXOIxI0PfazBZOvmV8AIsKeex9TwCiMByFH1VnIxlAbirefXbiN BXma1uP5kcPQ== X-IronPort-AV: E=Sophos;i="5.77,299,1596524400"; d="scan'208";a="336143599" Received: from otc-nc-03.jf.intel.com (HELO otc-nc-03) ([10.54.39.36]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2020 13:03:35 -0700 Date: Thu, 24 Sep 2020 13:03:34 -0700 From: "Raj, Ashok" To: Rajat Jain Cc: Bjorn Helgaas , linux-pci , Kai-Heng Feng , Joerg Roedel , Lalithambika Krishnakumar , Lu Baolu , Mika Westerberg , Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , linux-nvme@lists.infradead.org, "open list:AMD IOMMU (AMD-VI)" , Ashok Raj Subject: Re: [bugzilla-daemon@bugzilla.kernel.org: [Bug 209149] New: "iommu/vt-d: Enable PCI ACS for platform opt in hint" makes NVMe config space not accessible after S3] Message-ID: <20200924200334.GC86064@otc-nc-03> References: <20200923160327.GA2267374@bjorn-Precision-5520> <20200923161944.GA17764@otc-nc-03> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Wed, Sep 23, 2020 at 12:45:11PM -0700, Rajat Jain wrote: > On Wed, Sep 23, 2020 at 9:19 AM Raj, Ashok wrote: > > > > Hi Bjorn > > > > > > On Wed, Sep 23, 2020 at 11:03:27AM -0500, Bjorn Helgaas wrote: > > > [+cc IOMMU and NVMe folks] > > > > > > Sorry, I forgot to forward this to linux-pci when it was first > > > reported. > > > > > > Apparently this happens with v5.9-rc3, and may be related to > > > 50310600ebda ("iommu/vt-d: Enable PCI ACS for platform opt in hint"), > > > which appeared in v5.8-rc3. > > > > > > There are several dmesg logs and proposed patches in the bugzilla, but > > > no analysis yet of what the problem is. From the first dmesg > > > attachment (https://bugzilla.kernel.org/attachment.cgi?id=292327): > > > > We have been investigating this internally as well. It appears maybe the > > specupdate for Cometlake is missing the errata documention. The offsets > > were wrong in some of them, and if its the same issue its likely cause. > > Can you please also confirm if errata applies to Tigerlake ? > We confirmed ICL/TGL isn't affected.