Re: [PATCH 24/29] ia64/pv_ops/xen: implement xen pv_time_ops.

Jeremy Fitzhardinge
2008-07-17T14:21:37Z

Isaku Yamahata wrote:
> I had explained about that.
> I had considered that option. However my conclusion is not share
> he implementation because xen/ia64 timer interrupt isn't
> paravirtualized with VCPUOP_xxx hypercall. But xen/ia64 emulates
> ar.itm register. (ar.itm is interval time match register which triggers
> interrupt when interval time counter becomes same value)
>
> Since timer interruption is virtualized differently on xen/ia64,
> the different implementation is a natural consequence.

OK, that means the clockevent and clocksource part would be different.
But the runstate accounting should still be the same, no?

J