two linux 2.6 kernels on two ppc405 (xupv2p) ?

Josh Boyer jwboyer at
Sat Dec 13 12:29:52 EST 2008

On Fri, 12 Dec 2008 08:13:26 -0800 (PST)
"sarah.ddff" <sarah.ddff at> wrote:

> Hi all,
> I want to implement a multiprocessor system managed by a linux kernel on the
> xupv2p.
> I knwo that there is no cache coherency between the two ppc405 cores.
> Consequently,
> SMP linux can not be used.
> So the only solution is to install two linux kernels, each on a ppc
> processor,
> and to make them communicate with shared memory.
> My questions are:
> does someone succeed in doing this?
> Is it possible to do this ?

AMCC has created a dual-460GT board called Arches.  I have no idea how
it actually works because it faces the same issues a dual-405 board
would, but apparently someone must use it somewhere.

Basic Arches support is in the kernel, but it's only for a single
processor from what I can see.


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