ev_byte_channel_send(9)

💌 ev_byte_channel_send — kernel API manual, but make it cute

okay so bestie, you're in the ev_byte_channel_send(9) section of the kernel API manual and honestly? this little function is the main character of "putting characters into a byte stream." that's it, that's the vibe. sending chars, living life, slaying 💅

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✨ NAME ✨

ev_byte_channel_send — send characters to a byte stream 🦋

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🌸 SYNOPSIS 🌸

unsigned int ev_byte_channel_send (unsigned int handle , unsigned int
*count , const char buffer[EV_BYTE_CHANNEL_MAX_BYTES] );

look at her. iconic signature. not a single character changed, periodt ✨

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🎀 ARGUMENTS 🎀

• handle — the byte stream handle 💖 like, this is which byte stream we're talking to. your fave stream. the one.
• count — lowkey a double agent ngl: as an input it's the num of chars to send, and as an output it's the num chars sent. she does both. she contains multitudes 🫶
• buffer — pointer to a 16-byte buffer 🧚 keep that in mind, because—

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👑 DESCRIPTION 👑

okay so here's the thing, and this is important, bestie: buffer must be at least 16 bytes long. why? because all 16 bytes will be read from memory into registers, even if count < 16. 😭

fr fr do not hand her a tiny buffer and hope for the best. she's grabbing all 16 bytes whether you like it or not. that's just how she is.

Returns 0 for success, or an error code. that's it. zero means slay, anything else means something went sideways 💀

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🌈 SEE ALSO 🌈

the whole friend group, no cap:

• Kernel file ./arch/powerpc/include/asm/epapr_hcalls.h
• ev_int_set_config(9)
• ev_int_get_config(9)
• ev_int_set_mask(9)
• ev_int_get_mask(9)
• ev_int_eoi(9)
• ev_byte_channel_receive(9)
• ev_byte_channel_poll(9)
• ev_int_iack(9)
• ev_doorbell_send(9)
• ev_idle(9)

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and that's the whole page, bestie 💜 this came to you from the kernel file ./arch/powerpc/include/asm, dated October 2026, and it's literally ev_byte_channel_send(9) — drink water, use EV_BYTE_CHANNEL_MAX_BYTES responsibly, and go send some characters 🎀✨