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x86: max_low_pfn_mapped fix #4 

only add direct mapping for aperture

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu 2008-07-13 14:29:41 -07:00 committed by Ingo Molnar
parent 11369f356b
commit 32b23e9a73
1 changed files with 2 additions and 5 deletions
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7
arch/x86/kernel/pci-gart_64.c
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@ -679,11 +679,8 @@ static __init int init_k8_gatt(struct agp_kern_info *info)
/* need to map that range */
end_pfn = (aper_base>>PAGE_SHIFT) + (aper_size>>PAGE_SHIFT);
if (end_pfn > max_low_pfn_mapped) {
start_pfn = max_low_pfn_mapped;
max_low_pfn_mapped = init_memory_mapping(start_pfn<<PAGE_SHIFT,
end_pfn<<PAGE_SHIFT);
if (max_pfn_mapped < max_low_pfn_mapped)
max_pfn_mapped = max_low_pfn_mapped;
start_pfn = (aper_base>>PAGE_SHIFT);
init_memory_mapping(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT);
}
return 0;