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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 6B7B9C433ED for ; Wed, 14 Apr 2021 15:42:41 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 22EFF611B0 for ; Wed, 14 Apr 2021 15:42:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 22EFF611B0 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 smtp1.osuosl.org (Postfix) with ESMTP id E8CC08452B; Wed, 14 Apr 2021 15:42:40 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vfAjkYUlcKWc; Wed, 14 Apr 2021 15:42:40 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTP id 00AF784522; Wed, 14 Apr 2021 15:42:40 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id E2243C000C; Wed, 14 Apr 2021 15:42:39 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1FFA9C000C for ; Wed, 14 Apr 2021 15:42:39 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id E97E4607DC for ; Wed, 14 Apr 2021 15:42:35 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id faRkrbKyRQIO for ; Wed, 14 Apr 2021 15:42:35 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by smtp3.osuosl.org (Postfix) with ESMTPS id 2B545607EC for ; Wed, 14 Apr 2021 15:42:34 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 921EE68C7B; Wed, 14 Apr 2021 17:42:32 +0200 (CEST) Date: Wed, 14 Apr 2021 17:42:32 +0200 From: Christoph Hellwig To: Tianyu Lan Subject: Re: [Resend RFC PATCH V2 08/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM. Message-ID: <20210414154232.GC32045@lst.de> References: <20210414144945.3460554-1-ltykernel@gmail.com> <20210414144945.3460554-9-ltykernel@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210414144945.3460554-9-ltykernel@gmail.com> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: linux-hyperv@vger.kernel.org, brijesh.singh@amd.com, linux-mm@kvack.org, hpa@zytor.com, kys@microsoft.com, will@kernel.org, hch@lst.de, linux-arch@vger.kernel.org, wei.liu@kernel.org, sthemmin@microsoft.com, linux-scsi@vger.kernel.org, x86@kernel.org, mingo@redhat.com, kuba@kernel.org, jejb@linux.ibm.com, thomas.lendacky@amd.com, Tianyu Lan , arnd@arndb.de, konrad.wilk@oracle.com, haiyangz@microsoft.com, bp@alien8.de, tglx@linutronix.de, vkuznets@redhat.com, martin.petersen@oracle.com, gregkh@linuxfoundation.org, sunilmut@microsoft.com, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org, akpm@linux-foundation.org, robin.murphy@arm.com, davem@davemloft.net 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, Apr 14, 2021 at 10:49:41AM -0400, Tianyu Lan wrote: > From: Tianyu Lan > > UIO HV driver should not load in the isolation VM for security reason. > Return ENOTSUPP in the hv_uio_probe() in the isolation VM. What is the "security reason"? After all a user can simply patch the code and just load it anyway.. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu