From 2b72394e4089643f11669d9610907a1442fe044a Mon Sep 17 00:00:00 2001 From: Pekka Enberg Date: Tue, 28 Apr 2009 16:00:49 +0300 Subject: x86: move max_pfn_mapped and max_low_pfn_mapped to setup.c This patch moves the max_pfn_mapped and max_low_pfn_mapped global variables to kernel/setup.c where they're initialized. [ Impact: cleanup ] Signed-off-by: Pekka Enberg LKML-Reference: <1240923649.1982.21.camel@penberg-laptop> Signed-off-by: Ingo Molnar --- arch/x86/kernel/setup.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/x86/kernel/setup.c') diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index b415843..0d77e56 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -112,6 +112,14 @@ #define ARCH_SETUP #endif +/* + * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. + * The direct mapping extends to max_pfn_mapped, so that we can directly access + * apertures, ACPI and other tables without having to play with fixmaps. + */ +unsigned long max_low_pfn_mapped; +unsigned long max_pfn_mapped; + RESERVE_BRK(dmi_alloc, 65536); unsigned int boot_cpu_id __read_mostly; -- cgit v1.1