Re: [Xen-devel] Xen 4.8 + Linux 4.9 + Credit2 = can't bootup

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Wed, Jan 04, 2017 at 08:52:03PM -0500, Konrad Rzeszutek Wilk wrote:
> Hey,
> 
> I was trying to bootup on an 30 CPU machine (15 core, SMT).
> 
> It works just fine with credit1 (see further down the log)
> but if I try credit2 it ends up hanging during bootup. 
> 
> I am a going to naively assume it is due to how the vCPUs are
> exposed (Where they match the physical CPUs under credit1),
> but under credit2 they are different.
> 
> The dom0_max_vcpus does not seem to have any affect. When I remove it
> things are still being problematic.
> 
> Help!?

It seems now that I took dom0_max_vcpus out of the picture I can
reproduce this with credit1 scheduler. So it looks like an Linux issue.

Boris, any ideas? This is 4.9.

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