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The FFA_MSG_SEND2 can be used to transmit a partition message from the Tx buffer of the sender(the driver in this case) endpoint to the Rx buffer of the receiver endpoint. An invocation of the FFA_MSG_SEND2 transfers the ownership of the Tx buffer to the receiver endpoint(or any intermediate consumer). Completion of an FFA_MSG_SEND2 invocation transfers the ownership of the buffer back to the sender endpoint. The framework defines the FFA_MSG_SEND2 interface to transmit a partition message from the Tx buffer of the sender to the Rx buffer of a receiver and inform the scheduler that the receiver must be run. Link: https://lore.kernel.org/r/20240417090931.2866487-1-sudeep.holla@arm.com Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> |
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