diff options
Diffstat (limited to 'arch/x86/mm/ioremap.c')
-rw-r--r-- | arch/x86/mm/ioremap.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 334e63ca7b2b..30e068d6462e 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c | |||
@@ -29,22 +29,6 @@ int page_is_ram(unsigned long pagenr) | |||
29 | resource_size_t addr, end; | 29 | resource_size_t addr, end; |
30 | int i; | 30 | int i; |
31 | 31 | ||
32 | /* | ||
33 | * A special case is the first 4Kb of memory; | ||
34 | * This is a BIOS owned area, not kernel ram, but generally | ||
35 | * not listed as such in the E820 table. | ||
36 | */ | ||
37 | if (pagenr == 0) | ||
38 | return 0; | ||
39 | |||
40 | /* | ||
41 | * Second special case: Some BIOSen report the PC BIOS | ||
42 | * area (640->1Mb) as ram even though it is not. | ||
43 | */ | ||
44 | if (pagenr >= (BIOS_BEGIN >> PAGE_SHIFT) && | ||
45 | pagenr < (BIOS_END >> PAGE_SHIFT)) | ||
46 | return 0; | ||
47 | |||
48 | for (i = 0; i < e820.nr_map; i++) { | 32 | for (i = 0; i < e820.nr_map; i++) { |
49 | /* | 33 | /* |
50 | * Not usable memory: | 34 | * Not usable memory: |