Re: [patch 04/41] cpu ops: Core piece for generic atomic per cpu operations

Christoph Lameter
2008-06-17T02:29:27Z

On Tue, 17 Jun 2008, Rusty Russell wrote:

> > The ia64 hook could simply return the address of percpu area that
> > was reserved when the per node memory layout was generated (which happens
> > very early during node bootstrap).
>
> Apologies, this time I read the code. I thought IA64 used the pinned TLB area
> to access per-cpu vars under some circumstances, but they only do that via an
> arch-specific macro.
>
> So creating new congruent mappings to expand the percpu area(s) is our main
> concern now?

The concern here was just consolidating the setup code for the per cpu
areas.