On Tuesday 17 June 2008 00:52:08 Christoph Lameter wrote: > On Sun, 15 Jun 2008, Rusty Russell wrote: > > > 3. Some hooks for arches to override particular behavior as needed. > > > F.e. IA64 allocates percpu structures in a special way. x86_64 > > > needs to do some tricks for the pda etc etc. > > > > IA64 is going to need some work, since dynamic percpu addresses won't be > > able to use their pinned TLB trick to get the local version. > > 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? Rusty. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
