Xen users - Feb 2007 - What could be the communication channels between xen and guest os?

Hi all,

   In case of Full Virtualization:
   What are the communication channels between the Xen VMM side and guest
OS?
   Also what are the limitations on this communication for data volume,speed

   problem etc. on this issue on theoritical ground?
   What could be the security issues for this communication channels?
   I know little about Event channel and xenstore but it is not enough and I
am not able to relate it with above questions.
   What could be the possibilities if we want to implement some new or
tailor made interfaces for
   the communication between xen and VM(May be on the VM side if their is
any service process on guest OS side.)?
  Sorry if it seems a lot of questions put together.

Thanks and Regards,
Aditya Shevalkar.


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