RE: [Xen-devel] SMP on the MacBook

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> >> 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
perfectly.
> >
> > I might be worth trying the native kernel from the demo cd just to
check
> > it's not a kernel config issue, but I admit it's a bit of a long
shot.
> 
> 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
2.6.15/14/12
> > to see if any of them fail in the same way as Xen -- that would give
us
> > 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.

Thanks,
Ian





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