Re: [Xen-devel] [PATCH v4] xen: avoid crash in disable_hotplug_cpu

[Olaf Hering <olaf@xxxxxxxxx>]

Am Tue, 11 Sep 2018 09:52:58 +0200
schrieb Olaf Hering <olaf@xxxxxxxxx>:

> As Jürgen suggested in another mail, Xen should probably disable hotplugging
> for cpu#0 in the generic setup code. Then cpu_is_hotpluggable(cpu) would
> do the right thing.

The relevant code is all private to arch/x86/kernel/topology.c.
There is no way to set .hotpluggable prior to register_cpu.
I guess you need to work that out with the x86 maintainers.

Olaf

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