[PATCH][VT] IO packet state STATE_REQ_READY fix

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[PATCH][VT] IO packet state STATE_REQ_READY fix

Li, Xin B
Currently, we mark an IO request to STATE_IOREQ_READY state before
IO handlers in xen HV, i.e. vmx_portio_intercept or vmx_mmio_intercept.
Actually, STATE_IOREQ_READY means it's ready for DM handling, only if IO
handlers in xen HV won't handle it, it should be passed to DM. This
fixes this issue.

Signed-off-by: Yunhong Jiang <[hidden email]>
Signed-off-by: Xin Li <[hidden email]>
Signed-off-by: Nakajima Jun <[hidden email]>

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