linux-kernel - Re: v3.3-rc1, regression introduced by "sched, nohz: Implement sched group, domain aware nohz idle load balancing" when unplugging CPUs.

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Message-ID: <1327352449.2446.19.camel@twins>
Date:	Mon, 23 Jan 2012 22:00:49 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	Suresh Siddha <suresh.b.siddha@...el.com>, tglx@...utronix.de,
	mingo@...e.hu, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xensource.com, gregkh@...e.de, rjw@...k.pl
Subject: Re: v3.3-rc1, regression introduced by "sched, nohz: Implement
 sched group, domain aware nohz idle load balancing" when unplugging CPUs.

On Mon, 2012-01-23 at 15:56 -0500, Konrad Rzeszutek Wilk wrote:
> Not exactly sure how this patch does it, but with this git commit
> 0b005cf54eac170a8f22540ab096a6e07bf49e7c, the Linux kernel crashes
> if I try to hot unplug VCPUs to the first (initial) domain.
> This is found using git bisection, and if I use the kernel compiled
> with 69e1e811dcc436a6b129dbef273ad9ec22d095ce (the previous commit)
> it works nicely. 

https://lkml.org/lkml/2012/1/19/463

is already on its way...
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