Re: [PATCH] xen: modify kernel mappings corresponding to grantedpages

From: Konrad Rzeszutek Wilk
Date: Tue Aug 09 2011 - 11:50:34 EST

> > So I hadn't looked at this in detail, but I wonder if we can use the
> > MULTIcall for this? It looks like we need to do two hypercalls so why
> > not batch it?
> That was going to be my next question. We should definitely batch these
> if possible.
> > And while we are it - we could change the MMU ops to only do this on
> > initial domain and for the domU case do the old mechanism?
> We need this in domU for driver domains and the like, don't we?

Sure, but I believe the majority of domU domains would not require this.

I was thinking that when we start playing with the device/driver domains
we would want to escalate the privilige level (or perhaps not)? Or
perhaps introcuce a new type - "if (xen_driver_domain())" to recognize
that we are special ?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at