Re: [Xen-ia64-devel] iosapic virtualisation

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Le Mercredi 01 Février 2006 10:11, Tristan Gingold a écrit :
> Le Mardi 31 Janvier 2006 20:53, Alex Williamson a écrit :
> > On Tue, 2006-01-31 at 12:29 +0100, Tristan Gingold wrote:
[...]
> >       * The vector-to-rte lookup in xen_reflect_interrupt_to_domain()
> >         looks rather heavy weight.  It seems like we should be able to
> >         construct the data structures for a direct look up here.  I
> >         don't think we can afford to scan the rte list for every
> >         interrupt.
Oups, forget my previous answer.
It is not heavy weight, but rather directly indexed.  There should be one RTE 
per vector.

However, the RTE lookup in iosapic_guest_write is heavy-weight.
I will check wether it is often used or not.

Tristan.



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