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=-11.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 5DD37C2D0A8 for ; Wed, 23 Sep 2020 19:45:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1075520888 for ; Wed, 23 Sep 2020 19:45:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="O9FTvRdv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726265AbgIWTpu (ORCPT ); Wed, 23 Sep 2020 15:45:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54158 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726199AbgIWTpu (ORCPT ); Wed, 23 Sep 2020 15:45:50 -0400 Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD648C0613CE for ; Wed, 23 Sep 2020 12:45:49 -0700 (PDT) Received: by mail-lj1-x241.google.com with SMTP id n25so667785ljj.4 for ; Wed, 23 Sep 2020 12:45:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Z4e3pg0c/Zru5ZWtPKdeWn+c+nXGAjJi5U8aCz3uzeQ=; b=O9FTvRdvjPNRL462v9lU8NIGlyHwkPJ5W9/eQ0TRTTQQwnaFxTZYWBlUU1rxo4C9wR XKCjF/OEpnVpB1Hx8iwZ4/Q24/gWv1FUF75tZuce80eU9w3H1KRzmhltU5WLEXbR8qMZ lr50EYWyEA2wU+zKRJVODvRN+LLAaCVTB9TIAc2zhdNcGkCjKxyf95y9S0zTpWzFIfQc zltn6UqVGdCk6jTwRBa3tdFUUeZIN3nErofso7zTU8hFeytLzETmtF0DNgN132Nvl+QN d5i/zB8Tex55NdNjabAdvug3kj99BjJsv1HnljfJjOpiNzk+QXco5JVHODj4vGXcG09G sFaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Z4e3pg0c/Zru5ZWtPKdeWn+c+nXGAjJi5U8aCz3uzeQ=; b=ZH3zCXG/yTMfQu0mmFJnK5RcpWnKPExTjU32CqWHos7XL06/4BqhBbt33PF9NURmgS Lj0lcEEEi1TTODeLd+rxg8wCGDZoPoGO0O41heK8aOxWmysFujz+xfUb8YcOUDZpHWxA 7F9q9+o7FhUQCQY15HCp9O0DbelBY8DGUslolSmoLSYWmjWCZcFahEjwW8NZLnNUlFTu cQZg2iygi71PJvYWYC7E/fwLZMAoLSrCSZT3rxgE8hRY4ZiIc4hl+7TAxhwt6WQFqGqx ge28c63O+d7uNpAU1cAvV7223W54F1ClypkATSnHPxautwZKorjUBtlZUF4p+djMpJTA UXjg== X-Gm-Message-State: AOAM531j05jct35WpCAN6J7BArr60mnaAn8V3EKdVz2jqqiMhNanOM0d rjfCtJqFbG6kW5Ie10EsCT+h+q/VWjtyzNrWPP/Kbw== X-Google-Smtp-Source: ABdhPJy4oRt0D9rAphLkS6oUMlrRISLyr5oeHKiOWqU9MeWzlP89ss68bpX12wL2+9Wg6MMYiYJlPXW7BeKR0U5TOmE= X-Received: by 2002:a2e:3208:: with SMTP id y8mr480904ljy.216.1600890348085; Wed, 23 Sep 2020 12:45:48 -0700 (PDT) MIME-Version: 1.0 References: <20200923160327.GA2267374@bjorn-Precision-5520> <20200923161944.GA17764@otc-nc-03> In-Reply-To: <20200923161944.GA17764@otc-nc-03> From: Rajat Jain Date: Wed, 23 Sep 2020 12:45:11 -0700 Message-ID: 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] To: "Raj, Ashok" 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)" Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org 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 ? Thanks, Rajat > > Will nudge the hw folks to hunt that down :-(. > > Cheers, > Ashok