On Mon, Sep 06, 2021 at 02:59:46PM +0200, Jan Beulich wrote: > From: Alexander Monakov <amona...@ispras.ru> > > Intel SDM does not explicitly say that entering a C-state via MWAIT will > implicitly flush CPU caches as appropriate for that C-state. However, > documentation for individual Intel CPU generations does mention this > behavior. > > Since intel_idle binds to any Intel CPU with MWAIT, list this assumption > of MWAIT behavior. > > In passing, reword opening comment to make it clear that the driver can > load on any old and future Intel CPU with MWAIT. > > Signed-off-by: Alexander Monakov <amona...@ispras.ru> > Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com> > [Linux commit: 8bb2e2a887afdf8a39e68fa0dccf82a168aae655] > > Dropped "reword opending comment" part - this doesn't apply to our code: > First thing mwait_idle_probe() does is call x86_match_cpu(); we do not > have a 2nd such call looking for just MWAIT (in order to the use _CST > data directly, which we can't get our hands at _CST at this point yet). > > Signed-off-by: Jan Beulich <jbeul...@suse.com>
Acked-by: Roger Pau Monné <roger....@citrix.com> Thanks, Roger.
