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 C66BAC388F7 for ; Wed, 28 Oct 2020 17:39:51 +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 1E0F2247E4 for ; Wed, 28 Oct 2020 17:39:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1E0F2247E4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de 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 B0736874A5; Wed, 28 Oct 2020 17:39:48 +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 WIWqgPrD17I2; Wed, 28 Oct 2020 17:39:45 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 366D587487; Wed, 28 Oct 2020 17:39:45 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 20C5EC0859; Wed, 28 Oct 2020 17:39:45 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id ECF56C0051 for ; Wed, 28 Oct 2020 17:39:43 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id DA08B204F1 for ; Wed, 28 Oct 2020 17:39:43 +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 yqL-C7DJ0vFQ for ; Wed, 28 Oct 2020 17:39:43 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by silver.osuosl.org (Postfix) with ESMTPS id 2031B20396 for ; Wed, 28 Oct 2020 17:39:43 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 2997E68C4E; Wed, 28 Oct 2020 18:39:40 +0100 (CET) Date: Wed, 28 Oct 2020 18:39:39 +0100 From: Christoph Hellwig To: Oded Gabbay Subject: Re: [PATCH v1] dma-mapping: normal memory for mmap() on coherent architectures Message-ID: <20201028173939.GB10317@lst.de> References: <20190802180758.9691-1-gavinli@thegavinli.com> <20190803062333.GC29348@lst.de> <20201028173152.GA10224@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Robin Murphy , Gavin Li , gavinli@thegavinli.com, Christoph Hellwig , "list@263.net:IOMMU DRIVERS , Joerg Roedel , " 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" On Wed, Oct 28, 2020 at 07:38:04PM +0200, Oded Gabbay wrote: > > > https://lkml.org/lkml/2020/8/29/252) > > > Since then, we are plagued by the kernel log message that gavin has > > > mentioned, as we are mostly running in our C/I environment with 5.4. > > > I wondered if you know if there was any fix to that in the more recent kernels ? > > > If not, can I help to fix that ? > > > > What are the kernel log messages that gaving has mentioned? > > This one: > 11:22:43 [Wed Oct 28 11:22:34 2020] x86/PAT: synapse_tests:29265 map > pfn RAM range req uncached-minus for [mem 0xe6236b000-0xe6236bfff], > got write-back > > Thousands of the same message with different addresses of course. What kernel version is this on? And what is the test case? _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu