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xen-devel
[Xen-devel] [PATCH] e820: fix clip_to_limit()
In clip_to_limit(), after memmove(&e820.map[i], &e820.map[i+1], ...), the
original
e820.map[i+1] become current e820.map[i] but the next loop count is i+1, so the
original
e820.map[i+1] will be skipped
Actually, e820 is sorted form low to high by sanitize_e820_map(), so we can
simply break
the loop if we meet the item which overrun "limit"
Signed-off-by: Xiao Guangrong <ericxiao.gr@xxxxxxxxx>
diff -r 93bc06dd1161 -r 5e06f2790d93 xen/arch/x86/e820.c
--- a/xen/arch/x86/e820.c Tue Nov 10 02:41:59 2009 +0800
+++ b/xen/arch/x86/e820.c Tue Nov 10 03:51:08 2009 +0800
@@ -389,6 +389,7 @@
(e820.nr_map - i - 1) * sizeof(struct e820entry));
e820.nr_map--;
}
+ break;
}
if ( old_limit )
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