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=-2.2 required=3.0 tests=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 434A2C2BA2B for ; Thu, 9 Apr 2020 12:04:29 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 D28A320753 for ; Thu, 9 Apr 2020 12:04:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D28A320753 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=panix.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 fraxinus.osuosl.org (Postfix) with ESMTP id AD05786B34; Thu, 9 Apr 2020 12:04:28 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KO1GKOSchtk1; Thu, 9 Apr 2020 12:04:27 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id CE6E986B47; Thu, 9 Apr 2020 12:04:27 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id BD5C4C089F; Thu, 9 Apr 2020 12:04:27 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 7916BC0177 for ; Thu, 9 Apr 2020 12:01:05 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 64C7A87B40 for ; Thu, 9 Apr 2020 12:01:05 +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 XVvmQpdJQpLG for ; Thu, 9 Apr 2020 12:01:04 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mailbackend.panix.com (mailbackend.panix.com [166.84.1.89]) by hemlock.osuosl.org (Postfix) with ESMTPS id 2C6BE877E7 for ; Thu, 9 Apr 2020 12:01:04 +0000 (UTC) Received: from xps-7390 (ip68-111-223-64.sd.sd.cox.net [68.111.223.64]) by mailbackend.panix.com (Postfix) with ESMTPSA id 48yfqf5PPHz1Bs0; Thu, 9 Apr 2020 08:01:02 -0400 (EDT) Date: Thu, 9 Apr 2020 05:01:01 -0700 (PDT) From: "Kenneth R. Crudup" To: dwmw2@infradead.org, baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org Subject: Re: "DMAR hardware is malfunctioning" error when powering off In-Reply-To: Message-ID: References: User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 09 Apr 2020 12:04:25 +0000 Cc: "Kenneth R. Crudup" 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: , Reply-To: "Kenneth R. Crudup" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" BTW, I normally don't run with "intel_iommu=on" (but I do have "CONFIG_IRQ_REMAP turned on), as I figure that if I'm a single-user laptop and my only VM is VMWare (running Win10 guests), and I only use my Thunderbolt ports for my own docks, that I really don't need an IOMMU anyway- but is there a benefit to having the IOMMU turned on (were it to work, that is) in my situation? -Kenny -- Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Silicon Valley _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu