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A comment on Io_uring is not (only) a generic asynchronous syscall facility. Parent comment

Re:Io_uring is not (only) a generic asynchronous syscall fac... by twic on Wednesday June 30, 2021 @08:07AM (#27687497)
It sounds exactly like every microkernel architecture to me. Subsystems are processes, processes communicate by sending asynchronous messages, there is a way to wait for a reply to a message to allow synchronous interaction, there is a way to share or transfer ownership of memory between processes to allow bulk data transfer.

Message sending might be implemented on top of memory mapping, but doesn't need to be.

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Re:Io_uring is not (only) a generic asynchronous syscall fac... by fancl20 on Wednesday June 30, 2021 @09:17AM (#27688115)
That's exactly the point I want to express - this type of communication design is not bind to microkernel or io_uring or any system. It's a general architecture pattern appears on any cross subsystems communication. Hardware DMA also has a similar design.
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