On Saturday 24 June 2006 02:38, Dave Jones wrote:
> On Sat, Jun 24, 2006 at 02:19:28AM +0200, Andi Kleen wrote:
>
>
> > + extern int use_cyclone;
> > + if (use_cyclone == 0) {
> > + /* Make sure user sees something */
> > + static const char s[] __initdata = "Not an IBM x440/NUMAQ. Don't use i386 CONFIG_NUMA anywhere else.";
> > + early_printk(s);
> > + panic(s);
> > + }
>
> non-IBM Machines do still boot with that enabled though don't they?
No they don't - as they likely didn't do before. e.g. Opterons generally
break and that brings the point across clearer.
The rationale is that CONFIG_NUMA is very rarely used on i386 (even on summit)
and always does bitrot quickly. It also doesn't work at all on a wide
range of machines.
I'm sure someone will bring up now an example where their non Summit
machine booted with CONFIG_NUMA, but they were just extremly lucky
and unlikely to be for very long.
-Andi
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