Re: [Xen-devel] [PATCH 15/16] Infrastructure for manipulating 3-level event channel pages

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-02-04 at 13:51 +0000, Wei Liu wrote:
> On Mon, 2013-02-04 at 13:47 +0000, Ian Campbell wrote:
> > On Mon, 2013-02-04 at 13:45 +0000, Wei Liu wrote:
> > 
> > > /*
> > >  * Note to 3-level event channel users:
> > >  * Only enable 3-level event channel for Dom0 or driver domains, because
> > >  * 3-level event channels consumes (16 + nr_vcpus pages) global mapping
> > >  * area in Xen.
> > >  */
> > 
> > Can this be enforced by the system administrator?
> > 
> 
> Knowing a domain is Dom0 is easy, but is it possible to know a domain is
> driver domain?

The admin knows, at the very least they need to have a manual override
(or maybe this should even default off for non-dom0)

Ian.


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