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x86: always explicitly map acpi memory 

Always map acpi tables, rather than assuming we can use the normal
linear mapping to access the acpi tables.  This is necessary in a
virtual environment where the linear mappings are to pseudo-physical
memory, but the acpi tables exist at a real physical address.  It
doesn't hurt to map in the normal non-virtual case, so just do it
unconditionally.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge 2009-02-07 15:39:38 -08:00 committed by Ingo Molnar
parent 1c14fa4937
commit eecb9a697f
1 changed files with 0 additions and 3 deletions
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3
arch/x86/kernel/acpi/boot.c
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@ -127,9 +127,6 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
if (!phys || !size)
return NULL;
if (phys+size <= (max_low_pfn_mapped << PAGE_SHIFT))
return __va(phys);
if (prev_map)
early_iounmap(prev_map, prev_size);