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xen: make phys_to_machine structure dynamic

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We now support the use of memory hotplug, so the physical to machine
page mapping structure must be dynamic.  This is implemented as a
two-level radix tree structure, which allows us to efficiently
incrementally allocate memory for the p2m table as new pages are
added.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jeremy Fitzhardinge
2008-05-26 23:31:18 +01:00
committed by Thomas Gleixner
parent 955d6f1778
commit d451bb7aa8
5 changed files with 94 additions and 17 deletions
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2
arch/x86/xen/setup.c
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@ -27,8 +27,6 @@
extern const char xen_hypervisor_callback[];
extern const char xen_failsafe_callback[];
unsigned long *phys_to_machine_mapping;
EXPORT_SYMBOL(phys_to_machine_mapping);
/**
* machine_specific_memory_setup - Hook for machine specific memory setup.