Re: [Xen-devel] [PATCH] Disable Xen PowerNow! support on Opteron 2nd gen and earlier processors

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 4/2/08 21:52, "Langsdorf, Mark" <mark.langsdorf@xxxxxxx> wrote:

> Would turning off interrupts solve it?  It might be a bit brute
> force, but there's certainly a prechange notifier event and a
> postchange notifier event to use to turn them on and off.
> 
> Alternately, the prechange event could sleep until woken by
> the timer interrupt, which would increase the chance that all
> frequency changes take place at the start of an interrupt.

Perhaps you could find out if the big deltas happen on a timer interrupt
that happens between pre-notification and post-notification? If so you could
indeed disable event delivery and that might well fix it.

 -- Keir



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