On SDC scenario, SOS VM id is fixed to 0 so some hypercalls from guest
are using hardcoded "0" to represent SOS VM, this would bring issues
for HYBRID scenario which SOS VM id is non-zero.
Now introducing a new VM id concept for DM/VHM hypercall APIs, that
return a relative VM id which is from SOS view when create VM for post-
launched VMs. DM/VHM could always treat their own vm id is "0". When they
make hypercalls, hypervisor will convert the VM id to the absolute id
when dispatch the hypercalls.
Tracked-On: #3214
Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@Intel.com>
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