On Mon, 15 Oct 2007, Nick Piggin wrote: > Yes, as Dave said, vmap (more specifically: vunmap) is very expensive > because it generally has to invalidate TLBs on all CPUs.
why is that? ignoring 32-bit archs we have heaps of address space available... couldn't the kernel just burn address space and delay global TLB invalidate by some relatively long time (say 1 second)? -dean - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/