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[Xen-users] xen questions

To: xen-users@xxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] xen questions
From: "John mathews" <john.xen@xxxxxxxxx>
Date: Wed, 22 Aug 2007 16:42:44 -0700
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Hi
 
I am trying to understand receive and send path of xen. why multicall is invoked during the receive path (not in transmit path). also why do we need gnttab_copy function for receive to a guest ( i don't see invocation during transmit) ? Correct me if i am wrong. i see more gnttab_release or end than gnttab_claim for a run of xen.  i am naive to it (can someone explain me how dom0 is getting grant reference during the receive path?).
 
any pointers will be great
 
 
John
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