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| author | Alok Kataria <akataria@vmware.com> | 2008-06-25 22:02:42 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 15:16:17 +0400 |
| commit | fd6493e16625b92a506fba13deda31c0be5f1cd4 (patch) | |
| tree | 0980d27707d1658e5830ae9aad5edbee41fcd07c /arch/x86/kernel/e820.c | |
| parent | 6a2f47ca27fad36f99e8478a3807d4b8c7db80e7 (diff) | |
| download | linux-fd6493e16625b92a506fba13deda31c0be5f1cd4.tar.xz | |
x86: cleanup e820_setup_gap(), v2
e820_search_gap also take a end_addr parameter to limit search from
start_addr to end_addr.
Signed-off-by: AloK N Kataria <akataria@vmware.com>
Acked-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: "lenb@kernel.org" <lenb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/e820.c')
| -rw-r--r-- | arch/x86/kernel/e820.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index e03b89ac8f2b..d3f6c5f6d3b1 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -487,17 +487,19 @@ void __init update_e820(void) printk(KERN_INFO "modified physical RAM map:\n"); e820_print_map("modified"); } - +#define MAX_GAP_END 0x100000000ull /* - * Search for a gap in the e820 memory space from start_addr to 2^32. + * Search for a gap in the e820 memory space from start_addr to end_addr. */ __init int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize, - unsigned long start_addr) + unsigned long start_addr, unsigned long long end_addr) { - unsigned long long last = 0x100000000ull; + unsigned long long last; int i = e820.nr_map; int found = 0; + last = (end_addr && end_addr < MAX_GAP_END) ? end_addr : MAX_GAP_END; + while (--i >= 0) { unsigned long long start = e820.map[i].addr; unsigned long long end = start + e820.map[i].size; @@ -537,7 +539,7 @@ __init void e820_setup_gap(void) gapstart = 0x10000000; gapsize = 0x400000; - found = e820_search_gap(&gapstart, &gapsize, 0); + found = e820_search_gap(&gapstart, &gapsize, 0, MAX_GAP_END); #ifdef CONFIG_X86_64 if (!found) { |