Re: [Xen-devel] [PATCH 00/18] RFC: Merge IS_PRIV checks into XSM hooks

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Aug 07, 2012 at 02:07:55PM -0400, Shakeel Butt wrote:
> > I wasn't intending to exclude the other uses of XSM that this series will
> > benefit; dom0 disaggregation is just the most obvious case that requires
> > the larger changes like removing IS_PRIV checks.
> I was just saying that this patch series is more beneficial than claimed.
> 
> > Xenstore can already be split into its own stub domain (or domains, as in
> > the Xoar paper). The permissions model in Xenstore has a privileged bit
> > similar to IS_PRIV; extending XSM controls into Xenstore similar to how
> > SELinux controls were extended into DBus will address this.
> 
> My real concern here was the use of is_initial_domain() in the xenbus driver
> code. For example I am running all Linux PV and one of them is XenStore
> domain, the xenbus driver needs to do something different than
> is_initial_domain(),

Stefano and Daniel are already making the Linux XenBus driver more intelligient.
So that it can figure out whether is initial domain, but not running XenBus.

> maybe something like is_xenstore_domain() [not saying this is right
> way to do it].
> Please correct me if I am wrong.
> 
> thanks,
> Shakeel
> 
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