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Re: [Xen-devel] [PATCH for 4.7 0/4] Assorted scheduling fixes

On Tue, May 03, 2016 at 11:46:27PM +0200, Dario Faggioli wrote:
> Hi,
> This small series contains some bugfixes for various schedulers. They're all
> bugfixes, so I think all should be considered for 4.7. Here's some more
> detailed analysis.
> Patch 1 and 3 are for Credit2. Patch 1 is a lot more important, as we have an
> ASSERT triggering without it. Patch 2 is behavioral fixing, which I believe it
> is important, but at least does not make anything explode.
> Patch 2 fixes another ASSERT, in case a pCPU fails to come up. This is what
> Julien reported here:
>  https://www.mail-archive.com/xen-devel@xxxxxxxxxxxxx/msg65918.html
> Julien, the patch is very very similar to the one attached to one of my reply
> in that thread, but I had to change some small bits... Can you please re-test
> it?

I tested it. It does not crash anymore. However I see this:

(XEN) CPU1 never came online
(XEN) Failed to bring up CPU 1 (error -5)
(XEN) Bringing up CPU2
(XEN) CPU2 never came online
(XEN) Failed to bring up CPU 2 (error -5)
(XEN) Bringing up CPU3
(XEN) CPU3 never came online
(XEN) Failed to bring up CPU 3 (error -5)
(XEN) Brought up 1 CPUs

Which is not very reassuring. I don't know if that is expected.

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