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

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
From: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Date: Mon, 23 Jan 2012 22:00:49 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Suresh Siddha <suresh.b.siddha@xxxxxxxxx>, gregkh@xxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, rjw@xxxxxxx, tglx@xxxxxxxxxxxxx, mingo@xxxxxxx
Delivery-date: Mon, 23 Jan 2012 21:01:31 +0000
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

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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Follow-Ups:
- Re: [Xen-devel] v3.3-rc1, regression introduced by "sched, nohz: Implement sched group, domain aware nohz idle load balancing" when unplugging CPUs.
  - From: Konrad Rzeszutek Wilk

References:
- [Xen-devel] v3.3-rc1, regression introduced by "sched, nohz: Implement sched group, domain aware nohz idle load balancing" when unplugging CPUs.
  - From: Konrad Rzeszutek Wilk

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