Re: [PATCH v9 0/3] Drivers: hv: vmbus: vmbus_requestor data structure for VMBus hardening

[Wei Liu]

On Mon, Nov 09, 2020 at 11:03:59AM +0100, Andrea Parri (Microsoft) wrote:
> Currently, VMbus drivers use pointers into guest memory as request IDs
> for interactions with Hyper-V. To be more robust in the face of errors
> or malicious behavior from a compromised Hyper-V, avoid exposing
> guest memory addresses to Hyper-V. Also avoid Hyper-V giving back a
> bad request ID that is then treated as the address of a guest data
> structure with no validation. Instead, encapsulate these memory
> addresses and provide small integers as request IDs.
> 
> The first patch creates the definitions for the data structure, provides
> helper methods to generate new IDs and retrieve data, and
> allocates/frees the memory needed for vmbus_requestor.
> 
> The second and third patches make use of vmbus_requestor to send request
> IDs to Hyper-V in storvsc and netvsc respectively.
> 
> The series is based on 5.10-rc3.  Changelog in the actual patches.

Applied to hyperv-next. Thanks.

I also corrected the email address in my reviewed-by tags while
committing -- should've use my @kernel.org address, not @xen.org.

Wei.