Xen devel - Apr 2010 - how to call a hypercall from the guest OS of HVM

Hi all,
My guest OS is of HVM.I want to  pass a parameter to the VMM .As far as I
know ,there is a hvm_op in VMM to deal with hypercall from the guset OS of
HVM.but is there any function in the guest kernel that i can call to pass
parameters.It seem that in HVM,there is no function supporting for
hypercall  directly.Then  what can  I  do?
Thank you.

Wei Wang.


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