Re: [PATCH v2] x86/power: Fix 'nosmt' vs. hibernation triple fault during resume

[Jiri Kosina]

On Wed, 29 May 2019, Jiri Kosina wrote:

> The target kernel only onlines the CPUs which were online at the time of 
> hibernation (and are therefore in frozen_cpus mask).

Hm, there is a catch though. After resume, the SMT siblings are now in hlt 
instead of mwait.

Which means that the resumed kernel has to do one more online/offline 
cycle for them, to push them to mwait again.

Bah.

I'll send v3 shortly, so please don't apply v2 just yet.

-- 
Jiri Kosina
SUSE Labs