Re: [PATCH][RFC v3] x86, hotplug: Use hlt instead of mwait if invoked from disable_nonboot_cpus

[James Morse]

Hi,

On 07/07/16 03:50, Chen, Yu C wrote:
>> From: Rafael J. Wysocki [mailto:rjw@xxxxxxxxxxxxx]
>> Below is my sort of version of this (untested) and I did it this way, because the
>> issue is specific to resume from hibernation (the workaround need not be
>> applied anywhere else) and the hibernate_resume_nonboot_cpu_disable()
>> thing may be useful to arm64 too if I'm not mistaken (James?).
> 
> James might want a flag to distinguish whether it is from suspend or resume,
> in his arch-specific disabled_nonboot_cpus?

That isn't serious, we can work out whether it is hibernate/resume based on
whether we've read data out of the the arch header. I added it in the other
series as it looked cleaner to pass the value in instead of inferring it.


Thanks,

James