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From: Stephen Hemminger <stephen@networkplumber.org>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: Tianyu Lan <ltykernel@gmail.com>,
	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 <Tianyu.Lan@microsoft.com>,
	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
Subject: Re: [Resend RFC PATCH V2 08/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM.
Date: Wed, 14 Apr 2021 09:17:38 -0700
Message-ID: <20210414091738.3df4bed5@hermes.local> (raw)
In-Reply-To: <YHcOL+HlEoh5jPb8@kroah.com>

On Wed, 14 Apr 2021 17:45:51 +0200
Greg KH <gregkh@linuxfoundation.org> wrote:

> On Wed, Apr 14, 2021 at 10:49:41AM -0400, Tianyu Lan wrote:
> > From: Tianyu Lan <Tianyu.Lan@microsoft.com>
> > 
> > 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 <Tianyu.Lan@microsoft.com>

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.


  reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-14 14:49 [Resend RFC PATCH V2 00/12] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 01/12] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 02/12] x86/HV: Initialize shared memory boundary " Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 03/12] x86/Hyper-V: Add new hvcall guest address host visibility support Tianyu Lan
2021-04-14 15:40   ` Christoph Hellwig
2021-04-15  8:13     ` Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 04/12] HV: Add Write/Read MSR registers via ghcb Tianyu Lan
2021-04-14 15:41   ` Christoph Hellwig
2021-04-15  8:19     ` Tianyu Lan
2021-04-15 18:11   ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 05/12] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 06/12] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-04-15 18:52   ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 07/12] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-04-15 20:24   ` Konrad Rzeszutek Wilk
2021-04-19  6:36     ` Christoph Hellwig
2021-04-14 14:49 ` [Resend RFC PATCH V2 08/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM Tianyu Lan
2021-04-14 15:42   ` Christoph Hellwig
2021-04-14 15:45   ` Greg KH
2021-04-14 16:17     ` Stephen Hemminger [this message]
2021-04-15 12:54       ` Tianyu Lan
2021-04-15 13:09     ` Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 09/12] swiotlb: Add bounce buffer remap address setting function Tianyu Lan
2021-04-15 20:28   ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 10/12] HV/IOMMU: Add Hyper-V dma ops support Tianyu Lan
2021-04-14 15:47   ` Christoph Hellwig
2021-05-12 16:01     ` Tianyu Lan
2021-05-12 17:29       ` Robin Murphy
2021-05-13  3:19       ` Lu Baolu
2021-04-14 14:49 ` [Resend RFC PATCH V2 11/12] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-04-14 15:50   ` Christoph Hellwig
2021-04-15  8:39     ` Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 12/12] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-04-14 15:51   ` Christoph Hellwig

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