Re: [PATCH 0/4] Introduce QPW for per-cpu operations

[Frederic Weisbecker]

Le Thu, Feb 19, 2026 at 08:30:31PM +0100, Michal Hocko a écrit :
> On Thu 19-02-26 12:27:23, Marcelo Tosatti wrote:
> > Michal,
> > 
> > Again, i don't see how moving operations to happen at return to 
> > kernel would help (assuming you are talking about 
> > "context_tracking,x86: Defer some IPIs until a user->kernel transition").
> 
> Nope, I am not talking about IPIs, although those are an example of pcp
> state as well. I am sorry I do not have a link handy, I am pretty sure
> Frederic will have that. Another example, though, was vmstat flushes
> that need to be pcp. There are many other examples.

Here it is:

https://lore.kernel.org/all/20250410152327.24504-1-frederic@xxxxxxxxxx/

Thanks.

-- 
Frederic Weisbecker
SUSE Labs