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=-2.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, USER_AGENT_NEOMUTT autolearn=ham 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 B4B13C6778F for ; Fri, 27 Jul 2018 08:27:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5525A2088E for ; Fri, 27 Jul 2018 08:27:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=8bytes.org header.i=@8bytes.org header.b="F1wGyepu" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5525A2088E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730395AbeG0Jsn (ORCPT ); Fri, 27 Jul 2018 05:48:43 -0400 Received: from 8bytes.org ([81.169.241.247]:33212 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729431AbeG0Jsn (ORCPT ); Fri, 27 Jul 2018 05:48:43 -0400 Received: by theia.8bytes.org (Postfix, from userid 1000) id 1C4F3301; Fri, 27 Jul 2018 10:27:55 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=8bytes.org; s=mail-1; t=1532680075; bh=m6+etlJd/jrH81yzea9R2RtuP3/RY55XqqwVVZQuXqs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=F1wGyepu7odEf7TenDh+5hQJ8vxcYJQtw5jH5yp+ZBDeioGi8WOJMRMLKrZIRSfNY sDDiYtA80lBvK4m+wJvibt9mTVUCgk9kFYoAXh+Knn5Wd+xsl/sIKdXUjDz400uT4t a4hLMU/b0OY1+/yEuKkj1kZI/Ue/9nOqXXfbwf3d+MNC5K/kJureUWuiziFaYGxBd2 RwRZZPOxc+sLwAd7kuqVR3vBGarFRkXV5rlTMxO1sOW/YqENP6i/MQaVANcL+c0UIO SILCo4Exc2az9FeiHe61+Nz4vatS7LeEQRCmkMGfslcuuIhKLsQ9ZtQyoMM0nBJrCT Uu5RFcCYJ7T7A== Date: Fri, 27 Jul 2018 10:27:54 +0200 From: =?iso-8859-1?Q?J=F6rg_R=F6del?= To: Paul Menzel Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: MSI B350M MORTAR: `AMD-Vi: Unable to write to IOMMU perf counter.` and `pci 0000:00:00.2: can't derive routing for PCI INT A` Message-ID: <20180727082754.hk44xktdydduu3qo@8bytes.org> References: <605ca165-0071-eb7f-4c0d-b1e76ddd0e05@molgen.mpg.de> <20180720123153.GC18541@8bytes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: NeoMutt/20170421 (1.8.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Paul, On Mon, Jul 23, 2018 at 12:09:37PM +0200, Paul Menzel wrote: > > or the BIOS did not enable the performance counter feature in the IOMMU > > hardware. > > Is it possible to check that from the OS side? It would be if we had the NB documentation, but I guess those details are not publicly available. > > Are you running on the latest BIOS? > > Yes, I am even using a “beta“ one from [1]. > > DMI: MSI MS-7A37/B350M MORTAR (MS-7A37), BIOS 1.G1 05/17/2018 I think the best you can do is to report this as a bug to your BIOS vendor and hope they'll fix it. Joerg