Re: [PATCH v3 3/3] xen/privcmd: add IOCTL_PRIVCMD_RESTRICT

[Boris Ostrovsky]

On 02/13/2017 12:03 PM, Paul Durrant wrote:
> The purpose if this ioctl is to allow a user of privcmd to restrict its
> operation such that it will no longer service arbitrary hypercalls via
> IOCTL_PRIVCMD_HYPERCALL, and will check for a matching domid when
> servicing IOCTL_PRIVCMD_DM_OP.

and IOCTL_PRIVCMD_MMAP*.

> The aim of this is to limit the attack
> surface for a compromised device model.


-boris