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=-5.2 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 66E69C2D0A8 for ; Wed, 23 Sep 2020 16:19:51 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 C690020936 for ; Wed, 23 Sep 2020 16:19:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C690020936 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 3A53687341; Wed, 23 Sep 2020 16:19:50 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VO1MwNQIO6K9; Wed, 23 Sep 2020 16:19:49 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 6DDDA87349; Wed, 23 Sep 2020 16:19:49 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 52667C0859; Wed, 23 Sep 2020 16:19:49 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 35056C0051 for ; Wed, 23 Sep 2020 16:19:48 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 0E34B20397 for ; Wed, 23 Sep 2020 16:19:48 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vOkpafMA63vr for ; Wed, 23 Sep 2020 16:19:46 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by silver.osuosl.org (Postfix) with ESMTPS id D305E2037B for ; Wed, 23 Sep 2020 16:19:46 +0000 (UTC) IronPort-SDR: WKz6eMkUj/u36xu6GqwExnm79Ahb8g+w9rV2HjK5APvSZBiF04+2ehdDKIHVNKDZkT7EtRQysr 9z+tDsnQZC/Q== X-IronPort-AV: E=McAfee;i="6000,8403,9753"; a="158292977" X-IronPort-AV: E=Sophos;i="5.77,293,1596524400"; d="scan'208";a="158292977" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2020 09:19:46 -0700 IronPort-SDR: n84VaKhwCX5sjOasLfcX9sZZSHECuBqTrA0blMYILMmYzE0Pj4T36LW9qYLGnfatmwHQT9Y+ru ISUKaQw7HwbA== X-IronPort-AV: E=Sophos;i="5.77,293,1596524400"; d="scan'208";a="486496324" Received: from otc-nc-03.jf.intel.com (HELO otc-nc-03) ([10.54.39.36]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2020 09:19:45 -0700 Date: Wed, 23 Sep 2020 09:19:44 -0700 From: "Raj, Ashok" To: Bjorn Helgaas 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: <20200923161944.GA17764@otc-nc-03> References: <20200923160327.GA2267374@bjorn-Precision-5520> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200923160327.GA2267374@bjorn-Precision-5520> User-Agent: Mutt/1.5.24 (2015-08-30) Cc: Joerg Roedel , Sagi Grimberg , linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, Jens Axboe , Lalithambika Krishnakumar , iommu@lists.linux-foundation.org, Kai-Heng Feng , Keith Busch , Ashok Raj , Rajat Jain , Mika Westerberg , Christoph Hellwig X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" 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. Will nudge the hw folks to hunt that down :-(. Cheers, Ashok _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu