RE: cpu hotplug support broken in 2.6.23-rc3

["Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>]

>-----Original Message-----
>From: linux-kernel-owner@vger.kernel.org 
>[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of 
>Thomas Gleixner
>Sent: Friday, September 14, 2007 5:51 AM
>To: Pavel Machek
>Cc: Rafael J. Wysocki; Jeff Chua; rusty@rustycorp.com.au; 
>vatsa@in.ibm.com; zwane@arm.linux.org.uk; kernel list; Len Brown
>Subject: Re: cpu hotplug support broken in 2.6.23-rc3
>
>Pavel,
>
>On Fri, 2007-09-14 at 14:38 +0200, Pavel Machek wrote:
>> > I have an yet untested fix, which preserves the broadcast 
>state across
>> > the offline state, but Len is looking into it as well, 
>whether we can
>> > just reevaluate the power states (and the broadcast flags) 
>when a cpu
>> > becomes online again. If Len can do that easily for 
>2.6.23, I'd prefer
>> > that.
>> 
>> Is there a patch you want me to test? Or does Len have anything to
>> play with?
>
>Venki sent me an initial patch, but it has issues with the notify
>ordering. Find below my "cache the broadcast flags" version 
>for testing.
>

While wirting that patch, I knew solution could not be that simple :(.
Does the patch work for online offline case atleast?
Will look at the Suspend/Resume ordering part in that case.

Thanks,
Venki
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