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RE: [Xen-devel] SMP on the MacBook

To: "Marco Gerards" <mgerards@xxxxxxxxx>
Subject: RE: [Xen-devel] SMP on the MacBook
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Thu, 10 Aug 2006 11:32:02 +0100
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Thread-topic: [Xen-devel] SMP on the MacBook
> >> I have not tested the DemoCD because it still contains an unpatched
> >> GRUB.  Because of that it doesn't work with the Intel Mac.
> >>
> >> But I have tried linux 2.6.16 (self compiled), which works
> >
> > I might be worth trying the native kernel from the demo cd just to
> > it's not a kernel config issue, but I admit it's a bit of a long
> The problem is in Xen itself, if that is what you mean.  I was a bit
> tired yesterday evening and for some reason I was thinking you meant a
> normal linux kernel. :)

There is a native kernel on the demo CD as well as the xen/linux one.
They have very similar configs, so it's often interesting to compare the
behaviour of them.

> > Also, it might be good to test a similarly configed native
> > to see if any of them fail in the same way as Xen -- that would give
> > a big clue.
> I have been trying this, back to Linux 2.6.8.  I will play a bit more
> with this, although it really looks like this being an ACPI related
> issue, for some reason ACPI is being able to wakeup the second core
> properly.

As you point out, things go wrong too early to be influenced by anything
in xen/linux. However, trying booting different versions of native linux
is useful as it will tell us when the issue was fixed in linux and hence
identify what we need to do.


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