Re: [PATCH 1/9] xen: add xenstore domain flag to hypervisor

[Daniel De Graaf <dgdegra@tycho.nsa.gov>]

On 11/12/15 10:47, Juergen Gross wrote:
> In order to be able to have full support of a xenstore domain in Xen
> add a "Xenstore-domain" flag to the hypervisor. This flag must be
> specified at domain creation time and is returned by
> XEN_DOMCTL_getdomaininfo.
>
> It will allow the domain to retrieve domain information by issuing the
> XEN_DOMCTL_getdomaininfo itself in order to be able to check for
> domains having been destroyed. At the same time this flag will inhibit
> the domain to be migrated, as this wouldn't be a very wise thing to do.
>
> In case of a later support of a rebootable Dom0 this flag will allow to
> recognize a xenstore domain already being present to connect to.
>
> Cc: Jan Beulich <jbeulich@suse.com>
> Cc: Keir Fraser <keir@xen.org>
> Cc: Tim Deegan <tim@xen.org>
> Cc: Andrew Cooper <andrew.cooper3@citrix.com>
> Cc: David Vrabel <david.vrabel@citrix.com>
> Cc: Daniel De Graaf <dgdegra@tycho.nsa.gov>
>
> Signed-off-by: Juergen Gross <jgross@suse.com>

The XSM hook changes look good.  If XSM_XS_PRIV is ever used for a
permission other than getdomaininfo, the comment in xsm.h will be
inaccurate, but I'm not sure if that will ever be needed.

Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>