On Wed, May 13, 2009 at 6:05 AM, Andrew Morton
[off-list ref] wrote:

On Tue, 12 May 2009 16:36:00 +0800
Li Yang [off-list ref] wrote:

quoted

+     align = (size < 0x1000) ? 0x1000 : 1 << (__ilog2(size - 1) + 1);
+
+     /* Align the size */
+     if ((lstart + size) > (_ALIGN_DOWN(lstart, align) + align)) {

__ilog2() and _ALIGN_DOWN() are powerpc-specific functions.  It would
be preferable to use more general helpers if possible.  ALIGN() and ilog2()
might suit here.

Will change to use ilog2().

_ALIGN_DOWN() gets a lower aligned address while ALIGN() gets a higher
address.  It seems that we don't have a general helper to do the same.

- Leo