<P><FONT face="Verdana" size="2">in&nbsp; /arch/arm/kernel/setup.c<BR></FONT><FONT face="Verdana" size="2"></FONT></P>
<P><FONT face="Verdana" size="2">static int __init arm_add_memory(unsigned long start, unsigned long size)<BR>...<BR>size -= start &amp; ~PAGE_MASK;<BR>bank-&gt;start = PAGE_ALIGN(start);<BR>bank-&gt;size &nbsp;= size &amp; PAGE_MASK;<BR>bank-&gt;node &nbsp;= PHYS_TO_NID(start);<BR>.....<BR><BR>what&nbsp;&nbsp; size -= start &amp; ~PAGE_MASK&nbsp; to do ?<BR>thanks!<BR></FONT><BR></P>
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