[PATCH 7 of 7] x86: always explicitly map acpi memory

Jeremy Fitzhardinge
2008-09-07T22:26:48Z

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>
---
arch/x86/kernel/acpi/boot.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -126,9 +126,6 @@

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);