Re: [Xen-devel] xen,arm: enable cpu_hotplug

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 16/10/15 16:41, Stefano Stabellini wrote:
> It is possible to shut down cpu1 (psci->cpu_off, which pauses the vcpu)
> but it is not possible to remove cpu1 without removing cpu2 first.
> 
> If the user configures the target to be cpu 2-4, then shuts down cpu2, it
> won't receive any interrupts any more. This is not a cpu-hotplug bug.
> Maybe is a do_psci_cpu_off bug, which should be improved to handle this
> case.

It's neither a PSCI cpu off bug. It's a bug in our vGIC implementation.

Regards,

-- 
Julien Grall

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