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authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-28 10:38:45 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-02-28 10:38:45 -0800
commit46bbffad54bd48bb809f2691c1970a79a588976b (patch)
tree21779a574f118b1cba5d6832bc0a0fa3bee97075 /arch/x86/mm/ioremap.c
parent85fe20bfd415af0a2e93bd1166533d4a6eb591ea (diff)
parentc1fd1b43831fa20c91cdd461342af8edf2e87c2f (diff)
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, mm: Unify kernel_physical_mapping_init() API x86, mm: Allow highmem user page tables to be disabled at boot time x86: Do not reserve brk for DMI if it's not going to be used x86: Convert tlbstate_lock to raw_spinlock x86: Use the generic page_is_ram() x86: Remove BIOS data range from e820 Move page_is_ram() declaration to mm.h Generic page_is_ram: use __weak resources: introduce generic page_is_ram()
Diffstat (limited to 'arch/x86/mm/ioremap.c')
-rw-r--r--arch/x86/mm/ioremap.c37
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 03c75ffd5c2..5eb1ba74a3a 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -24,43 +24,6 @@
#include "physaddr.h"
-int page_is_ram(unsigned long pagenr)
-{
- resource_size_t addr, end;
- int i;
-
- /*
- * A special case is the first 4Kb of memory;
- * This is a BIOS owned area, not kernel ram, but generally
- * not listed as such in the E820 table.
- */
- if (pagenr == 0)
- return 0;
-
- /*
- * Second special case: Some BIOSen report the PC BIOS
- * area (640->1Mb) as ram even though it is not.
- */
- if (pagenr >= (BIOS_BEGIN >> PAGE_SHIFT) &&
- pagenr < (BIOS_END >> PAGE_SHIFT))
- return 0;
-
- for (i = 0; i < e820.nr_map; i++) {
- /*
- * Not usable memory:
- */
- if (e820.map[i].type != E820_RAM)
- continue;
- addr = (e820.map[i].addr + PAGE_SIZE-1) >> PAGE_SHIFT;
- end = (e820.map[i].addr + e820.map[i].size) >> PAGE_SHIFT;
-
-
- if ((pagenr >= addr) && (pagenr < end))
- return 1;
- }
- return 0;
-}
-
/*
* Fix up the linear direct mapping of the kernel to avoid cache attribute
* conflicts.