On Tue, Jan 05, 2010 at 04:12:47PM +0200, Gleb Natapov wrote: > KVM will use it to try and find a page without falling back to slow > gup. That is why get_user_pages_fast() is not enough. Btw, it seems like currently is declared unconditionally in linux/mm.h but only implemented by x86, and you code using it needs ifdefs for that. I think you should just introduce a stub that always returns an error here. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html