Thread (34 messages) 34 messages, 7 authors, 2021-05-13

Re: [Resend RFC PATCH V2 08/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM.

From: Tianyu Lan <hidden>
Date: 2021-04-15 12:54:23
Also in: linux-arch, linux-hyperv, linux-iommu, linux-mm, linux-scsi, lkml

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 [off-list ref] wrote:
quoted
On Wed, Apr 14, 2021 at 10:49:41AM -0400, Tianyu Lan wrote:
quoted
From: Tianyu Lan <redacted>

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 <redacted>
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.
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