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>
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 512f779..15b4393 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -425,6 +425,11 @@
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;
}