The virtuailization patches break Voyager.

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Guys currently I am horrified by the ease at which I can find
bugs in the pending paravirtualization patches.  I have barely
even looked at arch/i386 in the -mm tree and it feels like
I am tripping over significant bugs left and right.

Because no one has heeded my advice and put in a proper platform
layer on arch/i386 and we are instead doing a half baked job
with paravirt_ops it is still trivially easy to miss the
fact that subarchitectures do something different, and thus
it is easy to miss when you break a sub architecture on
arch/i386.

Not that the paravirtuailzation patches are even safe on the
primary arch/i386.

To some extent I grant with major changes a little goofing up on
pending patches is to be expected, but it would be nice if
things were restructured to make it harder to miss the
subarchitectures on arch/i386.

The patch known as x86_64-mm-use-per-cpu-gdt-immediately-upon-boot
on -mm currently breaks voyager smp support in some very obvious ways.

Making init_gdt a function which is called from voyager_smp.c static
in smpboot.c a file that is not even used on voayger is an obvious
one.

Adding start_pda and not setting it in voyager_smp is another.

Rusty do you think you can address this?

Eric
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