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x86: fix e820_update_range size when overlapping 

before that we relay on sanitize_e820_map to remove the overlap.

but e820_update_range(,,E820_RESERVED, E820_RAM) will not work

this patch fix that

who is going to use this?

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Yinghai Lu 2008-06-24 14:55:32 -07:00 committed by Ingo Molnar
parent 3a58a2a6c8
commit 976dd4dc99
1 changed files with 5 additions and 0 deletions
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5
arch/x86/kernel/e820.c
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@ -425,6 +425,11 @@ u64 __init e820_update_range(u64 start, u64 size, unsigned old_type,
e820_add_region(final_start, final_end - final_start,
new_type);
real_updated_size += final_end - final_start;
ei->size -= final_end - final_start;
if (ei->addr < final_start)
continue;
ei->addr = final_end;
}
return real_updated_size;
}