From: Jeremy Fitzhardinge Date: Sat, 7 Feb 2009 23:39:38 +0000 (-0800) Subject: x86: always explicitly map acpi memory X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=eecb9a697f0b790e5840dae8a8b866bea49a86ee;p=linux-beck.git 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 Acked-by: Len Brown Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index c518599e4264..5424a18f2e4e 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -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);