[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [v1 1/2] xen/p2m: Create identity mappings for PFNs beyound E820 and PCI BARs



>>> On 28.10.13 at 17:58, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
> On Fri, Oct 25, 2013 at 04:08:19PM -0600, Bjorn Helgaas wrote:
>> If you can look at PCI host bridge apertures instead of BARs, that
>> would solve both problems.  Reassigning those apertures is
>> theoretically possible but is not even a gleam in our eyes yet.
> 
> <nods> I think I have to have both (BARs and host bridge apertures) as when
> we do PCI passthrough to a guest - we might do it without a bridge.

Why? Aren't the host bridge ranges necessarily a superset of the
individual devices' BARs?

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.