Re: Only one processor detected in 8-Way opteron in 32-bit mode

From: Bharath Ramesh
Date: Sun Dec 04 2005 - 09:24:43 EST


Can you point me to the thread in which you posted the patch so that I
can try it out. I am limited to a 32-bit kernel as the library I want
use requires a 32bit kernel. I need to try to get some performance
results.

Thanks,
Bharath

On 03 Dec 2005 15:21:14 -0700, Andi Kleen <ak@xxxxxxx> wrote:
> Keith Mannthey <kmannth@xxxxxxxxx> writes:
>
> > Welcome to hardware bring up. Ok I looked a little closer at the
> > story. In x86_64 the only check for valid apic is apicid < MAX_APICS
> > which make sense to me.
>
> It will still not work. He will need a variant of the physflat-i386
> patch I posted some time ago. However it needs some cleanup
> to be actually mergeable
>
> My recommendation is a 64bit kernel.
>
> -Andi
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