Re: [ACPI] Re: [RFC 0/6] S3 SMP support with physcial CPU hotplug

[Nigel Cunningham]

Hi again.

On Mon, 2005-04-04 at 21:31, Pavel Machek wrote:
> Hi!
> 
> > > > The patches are against 2.6.11-rc1 with Zwane's CPU hotplug patch in -mm
> > > >  tree.
> > > 
> > > Should I merge that thing into mainline?  It seems that a few people are
> > > needing it.
> > 
> > Perhaps we should address the MTRR issue first.
> > 
> > I've had code in Suspend2 for quite a while (6 months+) that removes the
> > sysdev support for MTRRs and saves and restores them with CPU context,
> > thereby avoiding the smp_call-while-interrupts-disabled issue. Perhaps
> > it would be helpful here?
> 
> This seems like separate issue... I'd prefer not to block this patch.
> 
> MTRRs should be probably handled by some kind of "cpu is going down"
> and "cpu is going up" callbacks... Zwane, do you have any ideas?
> Linklist of handlers should be enough...

What else is it needed for? CpuFreq?

Nigel
-- 
Nigel Cunningham
Software Engineer, Canberra, Australia
http://www.cyclades.com
Bus: +61 (2) 6291 9554; Hme: +61 (2) 6292 8028;  Mob: +61 (417) 100 574

Maintainer of Suspend2 Kernel Patches http://suspend2.net

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