Re: [PATCH]new ACPI processor driver to force CPUs idle

Andi Kleen
2009-07-06T23:43:48Z

On Mon, Jul 06, 2009 at 11:33:12PM +0530, Vaidyanathan Srinivasan wrote:
> > >
> > > How do we handle interrupts and timers during this interval? You seem
> > > to disable interrupts and hold the cpu at idle for 0.95 sec. It may
> > > cause timeouts and overflows for network interrupts right?
> > The x86 mwait/monitor instruction can detect interrupt and complete execution
> > even interrupt is disabled, so this isn't an issue.
>
> Cool, this will save a lot of trouble :)

This is only available in newer Intel CPUs.

-Andi
--
ak@linux.intel.com -- Speaking for myself only.