* Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 1 Jul 2009, Ingo Molnar wrote: > > > The usecase i'm talking about is to boot a generic, > > many-CPUs-capable kernel in a guest image. > > The many-cpu-capable kernel is not the issue. The number of > potential cpus is config information provided by the hardware. In > your case the host system provides the number of possible > processors. Say it says "256 CPUs". But i only run a 2 CPU guest system. But i want to run it with the _on demand capability_ to scale up to 256 virtual CPUs if needed, without having to reboot the guest and without having to allocate all the percpu space for 256 CPUs beforehand. Ok? It is a simple, basic OS feature and concept. Ingo -- 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
