Patent ID: 9696912
Date: 2017-07-04
CPC Classifications: G06F

Claim:
1. A method for synchronous execution of input/output (I/O) commands between an operating system and a recipient, the operating system and the recipient executing on a processor coupled to a memory, the method comprising: issuing, by the operating system to the recipient, a synchronous I/O initiated command with an initiation bit set; receiving, from the recipient, a synchronous I/O initiated response identifying that a mailbox command has been initiated to return control to the operating system before waiting for operations of the synchronous I/O initiated command to complete releasing a processing thread corresponding to the synchronous I/O initiated command in response to the receiving of the synchronous I/O initiated response to permit the synchronous execution of the I/O commands before waiting for the operations of the synchronous I/O initiated command to complete; and issuing, by the operating system to the recipient, a second synchronous I/O command with a completion bit set in response to the control returning to the operating system.