[Xen-users] xen questions

["John mathews" <john.xen@xxxxxxxxx>]

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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