Re: [Xen-devel][RFC]degradation on IPF due to hypercall set irq

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 22/11/06 09:24, "Xu, Anthony" <anthony.xu@xxxxxxxxx> wrote:

>>>> To clarify, by event/main loop I mean: Flush just before qemu blocks
>>>> (otherwise multicall can be held for unbounded time, unless we set a
>>>> batching timeout which hopefully we can avoid needing to do).
> 
> Why otherwise multicall can be held for unbounded time?

Qemu only wakes up for device-model accesses. We don't know when the next of
those will be. So we should flush multicalls before the potentially blocking
select().

 -- Keir


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel