Re: [PATCH v4] x86/power: Fix 'nosmt' vs. hibernation triple fault during resume

[Jiri Kosina]

On Fri, 31 May 2019, Josh Poimboeuf wrote:

> The only question I'd have is if we have data on the power savings 
> difference between hlt and mwait.  mwait seems to wake up on a lot of 
> different conditions which might negate its deeper sleep state.

hlt wakes up on basically the same set of events, but has the 
auto-restarting semantics on some of them (especially SMM). So the wakeup 
frequency itself shouldn't really contribute to power consumption 
difference; it's the C-state that mwait allows CPU to enter.

Thanks,

-- 
Jiri Kosina
SUSE Labs