mei_pxp_receive_message(9)

📦 version 7.3.1, in nixpkgs unstable

💌 mei_pxp_receive_message — bestie, it's a whole vibe

Okay so real talk: mei_pxp_receive_message(9) lives in the Kernel API Manual, and its entire job is literally just catching a message that the ME FW yeeted at you. Receives a PXP message from ME FW. That's it. That's the function. Iconic behavior honestly 🎀

✨ SYNOPSIS ✨

int mei_pxp_receive_message (struct device *dev , void *buffer , size_t
       size , unsigned long timeout_ms );

No cap, that's the whole signature. Four arguments, one int coming back at you 💅

🫶 ARGUMENTS 🫶

  • dev — the device corresponding to the mei_cl_device. Basically "who dis" for the hardware 🌸
  • buffer — a message buffer to contain the received message. It's the lil basket where your incoming message lands 🧺
  • size — size of the buffer. Keep it real, keep it honest, because this is how much room your basket has ✨
  • timeout_ms — timeout in milliseconds, and zero means wait indefinitely. So 0 = "I'll wait forever, no thoughts head empty" 😭

🌈 RETURN 🌈

On success you get the number of bytes send back, and on failure you get a value <0, with these specifically defined failure besties:

  • -ENODEV — Client was not connected. Caller may attempt to try again from send immediately. Not me being disconnected 💀 just send again, you got this.
  • -ENOMEM — Internal memory allocation failure experienced. Caller may sleep to allow kernel reclaim before retrying. Go take a nap, let the kernel tidy up 🦋
  • -EINTR — Calling thread received a signal. Caller will need to repeat calling (with a different owning thread) to retrieve existing unclaimed response (and may discard it). Yeah, whole diff thread, that's the assignment 🙈
  • -ETIME — Request is timed out. Caller may attempt to try again from send immediately. She waited, she got nothing, send again periodt ⏰
Heads up bestie: those are the defined failures, so if you're out here matching every negative number to a cute emoji, don't — the manpage only promises these four 🫶

👑 SEE ALSO 👑

All the sister functions, the whole squad, read them together iykyk 🔥

And that's the page, bestie! This little legend comes from ./drivers/misc/mei/pxp, dated October 2026, and it's mei_pxp_receive_message(9) — manual name tucked right up top where you saw it. Go forth and receive those messages 💖✨🎀

📦 where this page comes from