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diff --git a/arch/arm/xen/p2m.c b/arch/arm/xen/p2m.c
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index 23732cd..7772fa8 100644
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--- a/arch/arm/xen/p2m.c
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+++ b/arch/arm/xen/p2m.c
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@@ -27,7 +27,9 @@ struct xen_p2m_entry {
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 rwlock_t p2m_lock;
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 struct rb_root phys_to_mach = RB_ROOT;
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+EXPORT_SYMBOL_GPL(phys_to_mach);
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 static struct rb_root mach_to_phys = RB_ROOT;
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+EXPORT_SYMBOL_GPL(mach_to_phys);
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 static int xen_add_phys_to_mach_entry(struct xen_p2m_entry *new)
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 {