Skip to content

Commit

Permalink
x86: move max_pfn_mapped and max_low_pfn_mapped to setup.c
Browse files Browse the repository at this point in the history
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 <penberg@cs.helsinki.fi>
LKML-Reference: <1240923649.1982.21.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
  • Loading branch information
Pekka Enberg authored and Ingo Molnar committed Apr 30, 2009
1 parent 8938891 commit 2b72394
Show file tree
Hide file tree
Showing 3 changed files with 9 additions and 11 deletions.
8 changes: 8 additions & 0 deletions arch/x86/kernel/setup.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down
4 changes: 1 addition & 3 deletions arch/x86/mm/init_32.c
Original file line number Diff line number Diff line change
Expand Up @@ -49,11 +49,9 @@
#include <asm/paravirt.h>
#include <asm/setup.h>
#include <asm/cacheflush.h>
#include <asm/page_types.h>
#include <asm/init.h>

unsigned long max_low_pfn_mapped;
unsigned long max_pfn_mapped;

DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
unsigned long highstart_pfn, highend_pfn;

Expand Down
8 changes: 0 additions & 8 deletions arch/x86/mm/init_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -50,14 +50,6 @@
#include <asm/cacheflush.h>
#include <asm/init.h>

/*
* 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;

static unsigned long dma_reserve __initdata;

DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
Expand Down

0 comments on commit 2b72394

Please sign in to comment.