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xen-ia64-devel
[Xen-ia64-devel] Re: [PATCH 24/29] ia64/pv_ops/xen: implement xen pv_tim
On Wed, Jul 16, 2008 at 10:45:16PM -0700, Jeremy Fitzhardinge wrote:
> Isaku Yamahata wrote:
> >implement xen pv_time_ops to account steal time.
> >
>
> I think you could just share arch/x86/xen/time.c, couldn't you? I'd be
> happy to accept a patch to move all the shareable bits into
> drivers/xen/time.c.
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.
thanks,
--
yamahata
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