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=-9.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 3C039C433B4 for ; Thu, 15 Apr 2021 12:54:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 10DC8613B6 for ; Thu, 15 Apr 2021 12:54:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232332AbhDOMyi (ORCPT ); Thu, 15 Apr 2021 08:54:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231482AbhDOMyh (ORCPT ); Thu, 15 Apr 2021 08:54:37 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9463C061574; Thu, 15 Apr 2021 05:54:14 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id y2so12002072plg.5; Thu, 15 Apr 2021 05:54:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=nFBhJEMWSCHQ9ckRhICUqHp2tzOkLKl41yxYxmXNW8k=; b=hoY2qyhaWOmcHAUhxLhqdl2UUYQFP2mZvbngLFNzsYmVwketTssI/OEzMrR5vrSYcz bB1MpB5zVdkmSDk927+vAXQSP+0TkGL2CkD2Iz/SuAgoYQ8jb4Jx3FeGHZm0dL/1pLUR IacekCQbE4Ohc/0K1F8WUD5gcpaslZovW66owGnAmKU7W13oJtUNjHOJHB3Em8jD3BAD E7+lJL7tX79QdZ6BdhmHx9s05DEbvXfVc8/ZCXEYV43UxyAMj6uJu7EDF1XP1ExWTc2G vhQ5Nl/ZMybAB50qIqEc8UzgfsZAwuUYFBxAA0SRZr1gsyX7QYfAT1dj+b000dxnu9ot aGfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=nFBhJEMWSCHQ9ckRhICUqHp2tzOkLKl41yxYxmXNW8k=; b=ane4kd3ClwTQ4O5T2gYDr+TKrdRxyqp4oiGdATTdpI+Yj6VpZWQbsaXojd9JYtxHxT 2/bxW1TBbg84HWBFdnByX5pThF9wY+ZyQETfvFE1ZFehswtMZsEHlXmYSTLmJ3UABKa/ +Jfbbmdq7satdgXBpBAS4zJ2Luv79Gnwiip5Xamvj72qWxWNmkb7i0sK8Eqq29WPgGsN H4+Wsj9Ekxgx/VoUE+zezPXsmwUUhhz78t4qOk8KRQxDnNXaskL+AT0GmHgRd9hM27I0 OwlxWzI4nxf2RF9iU0R4u7b0CN5IyMA5qNWJyUzbtdWFhcCTcfI3tVDTNC/AxijbCFO0 VekQ== X-Gm-Message-State: AOAM530RJa96+7yDvTDmSv2OUK7sPBPFIP2ssPt5DuUySXuD0zIyitpt e7y24NzbrqkXXzV+vHA3RaQ= X-Google-Smtp-Source: ABdhPJwMxGoxf76RvLc0tJT4UxlfrSX+Msz1jyTk5WaW6qqtbrg+lXaAsPVl/Z3ij+VVeCxsB22jnQ== X-Received: by 2002:a17:90a:2c4b:: with SMTP id p11mr3951409pjm.75.1618491254408; Thu, 15 Apr 2021 05:54:14 -0700 (PDT) Received: from ?IPv6:2404:f801:0:6:8000::a31c? ([2404:f801:9000:1a:efeb::a31c]) by smtp.gmail.com with ESMTPSA id h68sm2136897pfe.111.2021.04.15.05.54.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Apr 2021 05:54:13 -0700 (PDT) Subject: Re: [Resend RFC PATCH V2 08/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM. To: Stephen Hemminger , Greg KH Cc: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, arnd@arndb.de, akpm@linux-foundation.org, konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, Tianyu Lan , iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, vkuznets@redhat.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, sunilmut@microsoft.com References: <20210414144945.3460554-1-ltykernel@gmail.com> <20210414144945.3460554-9-ltykernel@gmail.com> <20210414091738.3df4bed5@hermes.local> From: Tianyu Lan Message-ID: Date: Thu, 15 Apr 2021 20:54:04 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.1 MIME-Version: 1.0 In-Reply-To: <20210414091738.3df4bed5@hermes.local> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org Hi Stephen: Thanks for your review. On 4/15/2021 12:17 AM, Stephen Hemminger wrote: > On Wed, 14 Apr 2021 17:45:51 +0200 > Greg KH wrote: > >> 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. >>> >>> Signed-off-by: Tianyu Lan > > This is debatable, in isolation VM's shouldn't userspace take responsibility > to validate host communication. If that is an issue please participate with > the DPDK community (main user of this) to make sure netvsc userspace driver > has the required checks. > Agree. Will report back to secure team and apply request to add change in userspace netvsc driver. Thanks for advise.