xen: setup percpu data pointers

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We need to access percpu data fairly early, so set up the percpu
registers as soon as possible.  We only need to load the appropriate
segment register.  We already have a GDT, but its hard to change it
early because we need to manipulate the pagetable to do so, and that
hasn't been set up yet.

Also, set the kernel stack when bringing up secondary CPUs.  If we
don't they all end up sharing the same stack...

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

...

This commit is contained in:

Jeremy Fitzhardinge 2009-02-02 13:55:31 -08:00 • committed by H. Peter Anvin

parent 327641da8e

commit 383414322b

3 changed files with 20 additions and 3 deletions

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15

arch/x86/xen/enlighten.c

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6

arch/x86/xen/smp.c

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2

arch/x86/xen/xen-ops.h

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