Re: [Xen-devel] [PATCH 1/2] xen: Implement ioctl to restrict privcmd to a specific domain

From: David Vrabel
Date: Thu Jul 31 2014 - 13:58:17 EST

On 31/07/14 18:49, George Dunlap wrote:
> On Thu, Jul 31, 2014 at 10:11 AM, David Vrabel <david.vrabel@xxxxxxxxxx> wrote:
>> On 31/07/14 14:53, Ian Campbell wrote:
>>> On Thu, 2014-07-31 at 14:16 +0100, Frediano Ziglio wrote:
>>>> include/xen/interface/domctl.h | 1090 ++++++++++++++++++++++++++++++++++++
>>> domctl is an stable toolstack only hypervisor interface, so the kernel
>>> cannot use it because it would then break.
>> Ok. I guess we'll have to resurrect the idea to do something with XSM.
> What kind of thing did you have in mind for XSM?

A multicall-like hypercall that has an additional parameter for a handle
to a XSM context to use for the contained hypercalls.

> In general it seems like allowing a vcpu to switch into an XSM label
> (not sure I've got the terminology right here) when it context
> switches into a particular process might be the most flexible way for
> that to work.

I think we want something than can a different policy on a per-fd basis.

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