Re: x86_64: up to 255 or 256 CPUs?

On Tuesday 20 February 2007 01:42, William Lee Irwin III wrote:
> On Tue, Feb 20, 2007 at 01:06:47AM +0100, Adrian Bunk wrote:
> > Quoting arch/x86_64/Kconfig:
> > <--  snip  -->
> > ...
> > config NR_CPUS
> >         int "Maximum number of CPUs (2-256)"
> >         range 2 255
> > ...
> > <--  snip  -->
> > cu
> > Adrian
> 
> The broadcast APIC ID clashes with the 256th cpu.

Yes 255 is theory. But we don't know if it actually works anyways because
it has been never tested.

-Andi
-
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/

---

• References:
  • x86_64: up to 255 or 256 CPUs?
    • From: Adrian Bunk <[email protected]>
  • Re: x86_64: up to 255 or 256 CPUs?
    • From: William Lee Irwin III <[email protected]>

• Prev by Date: [PATCH] fix handling of SIGCHILD from reaped child
• Next by Date: Re: [PATCH 3/4] coredump: ELF-FDPIC: enable to omit anonymous shared memory
• Previous by thread: Re: x86_64: up to 255 or 256 CPUs?
• Next by thread: 2.6.20-rc4-git4, V4L - possible circular locking dependency detected
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]