On 27/04/2010 00:01, "Byrne, John (HP Labs)" <john.l.byrne@xxxxxx> wrote:
>> I don't know what dom0 does while the page is paged in? Probably just
>> throws an error code and carries on? In which case thinking about
>> [prepare_]wait_on_xen_event_channel() further would not be necessary,
>> as a dom0 code path can just notify on teh channel and carry on its
>> way.
>> 
>
> That is the way it is supposed to work, but there seems to be a bit of a
> disconnect between grant-table code and the driver mods to handle the errors.
> The driver mods expect a new error code GNTST_eagain, but the grant_table code
> returns ENOENT in a couple of places. There were also a couple of
> "GNTxxx_can_fail" flags added to grant-table interface, but they are unused.
> So things don't look quite finished.
Yeah, I think that is pretty much the situation.
 -- Keir
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel