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kexec: add further check to crashkernel

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When using crashkernel=2M-256M, the kernel doesn't give any warning.  This
is misleading sometimes.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Zhenzhong Duan 2012-03-28 14:42:47 -07:00 committed by Linus Torvalds
parent d034cfab4f
commit eaa3be6add
1 changed files with 4 additions and 0 deletions
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4
kernel/kexec.c
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@ -1359,6 +1359,10 @@ static int __init parse_crashkernel_simple(char *cmdline,
if (*cur == '@')
*crash_base = memparse(cur+1, &cur);
else if (*cur != ' ' && *cur != '\0') {
pr_warning("crashkernel: unrecognized char\n");
return -EINVAL;
}
return 0;
}