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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04300C6FA90 for ; Wed, 21 Sep 2022 02:49:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230391AbiIUCtr (ORCPT ); Tue, 20 Sep 2022 22:49:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230480AbiIUCtl (ORCPT ); Tue, 20 Sep 2022 22:49:41 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5635763D5 for ; Tue, 20 Sep 2022 19:49:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663728578; x=1695264578; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=SpwZqyP/NsakNUiAYbXlk6VtCsQb6pxkSE0VYT9lA+E=; b=VrcUwlUiGrzHbCohTfT4Ofj1MJHRT4xPHfVZsGykxaOQ1IjvyBV/MRAk bh8Bhzj22cZHYDe1COIqq1dmC1QYCk4aFVdmK9F80UZ1mB2zAfEhnIQTx fzAe8Ra1r0oMrSpRkSmIcdNzejY2nZC6CwJDG8G+AKGXKQLM39j+Y1TP5 uh+iTxdEvMHEa1RlDfHxXhiTNr5CkH+74gfidjDOT5RGkZqbVtrREjpRv VF0vfXF+DDE0jme4BdN5x06HmnDf9Zda1s7OWyWatLoDn1gPxFVQr8lux tld6Hc/gD1aVlqMRDyGF88dhqOUHt9htxK+fB0IN2UJ5JO3n8NngIw/aV Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10476"; a="279606658" X-IronPort-AV: E=Sophos;i="5.93,332,1654585200"; d="scan'208";a="279606658" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2022 19:49:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,332,1654585200"; d="scan'208";a="794500836" Received: from allen-box.sh.intel.com (HELO [10.239.159.48]) ([10.239.159.48]) by orsmga005.jf.intel.com with ESMTP; 20 Sep 2022 19:49:35 -0700 Message-ID: <4dc8f9a4-c2cb-261e-21e7-37b2d29c7332@linux.intel.com> Date: Wed, 21 Sep 2022 10:43:40 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Cc: baolu.lu@linux.intel.com, Joerg Roedel , Will Deacon , Robin Murphy , Kevin Tian , Mika Westerberg , George Hilliard , linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/1] Revert "iommu/vt-d: Fix possible recursive locking in intel_iommu_init()" Content-Language: en-US To: iommu@lists.linux.dev References: <20220920081701.3453504-1-baolu.lu@linux.intel.com> From: Baolu Lu In-Reply-To: <20220920081701.3453504-1-baolu.lu@linux.intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/20/22 4:17 PM, Lu Baolu wrote: > This reverts commit 9cd4f1434479f1ac25c440c421fbf52069079914. > > Some issues were reported on the original commit. Some thunderbolt devices > don't work anymore due to the following DMA fault. > > DMAR: DRHD: handling fault status reg 2 > DMAR: [INTR-REMAP] Request device [09:00.0] fault index 0x8080 > [fault reason 0x25] > Blocked a compatibility format interrupt request > > Bring it back for now to avoid functional regression. > > Fixes: 9cd4f1434479f ("iommu/vt-d: Fix possible recursive locking in intel_iommu_init()") > Link:https://lore.kernel.org/linux-iommu/485A6EA5-6D58-42EA-B298-8571E97422DE@getmailspring.com/ > Link:https://bugzilla.kernel.org/show_bug.cgi?id=216497 > Cc: Mika Westerberg > Reported-and-tested-by: George Hilliard > Signed-off-by: Lu Baolu Queued for v6.0. https://lore.kernel.org/linux-iommu/20220921024054.3570256-1-baolu.lu@linux.intel.com Best regards, baolu