Re: [PATCH -tip] x86: cpu_debug.c prepare report if files areinappropriate or CPU is not supported

[Ingo Molnar]

* Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:

> > > Do you still think that boot_cpu_data.x86_vendor is better option in
> > > case for multiple CPUs.
> > 
> > yes. Assymetric SMP never really happened on x86.
> 
> It did but not between vendors. You can get away with a vendor 
> assumption but cpu type (mixed 486SX/DX, PII/PIII/Celeron) mixed 
> steppings and mixed speeds do occur. We've never supported the 
> mixed 486SX cases but the PII/PIII cases work (or at least 
> worked).

yeah - but look at the specific purpose here: we are deciding 
whether to print out state information related to major CPU 
features. Mixed steppings/speeds might happen, mixed apic / 
non-lapic not really.

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/