Re: [patch] x86, tlb: switch cr3 in leave_mm() only when needed

Linus Torvalds
2012-03-23T00:37:26Z

On Thu, Mar 22, 2012 at 5:20 PM, H. Peter Anvin <hpa@zytor.com> wrote:
>
> Looks great to me.  Linus, do you want this one later in the window if
> it tests out OK between now and then, or is it too late?

It's small and trivial, so it's fine. I *would* like to hear whether
it actually makes any real difference, though. I do see "intel_idle()"
as a big cost in idle profiles, and I assume that translates to power
use too, but if you guys have some actual numbers, that would be even
better.

Linus