From mboxrd@z Thu Jan  1 00:00:00 1970
From: tgh <tianguanhua@ncic.ac.cn>
Subject: question about gmfn_to_mfn()
Date: Fri, 23 Mar 2007 11:31:29 +0800
Message-ID: <46034A11.3040201@ncic.ac.cn>
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hi
 I read the code of balloon part,  I am  confused about  the meaning and 
function of " mfn = gmfn_to_mfn(d, gmfn);"
 what is gmfn  and  and what is mfn?  and" #define gmfn_to_mfn(_d, 
gpfn)  mfn_x(sh_gfn_to_mfn(_d, gpfn))"
it seems that  gmfn and gpfn  is the same  or  what is the trick in it ?

I am confused about it

could you help me
Thanks in advance