cxl_set_capacity(9)

🦋 cxl_set_capacity(9) 🦋

okay so bestie, welcome to the Kernel API Manual page for cxl_set_capacity(9) — yes that "9" is the section number, iykyk, this is a kernel function not a command you type at your shell 💅

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✨ NAME ✨

cxl_set_capacity — initialize dpa by a driver without a mailbox.

Like, the driver just sets it directly, no mailbox involved. Periodt.

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🌸 SYNOPSIS 🌸

int cxl_set_capacity (struct cxl_dev_state *cxlds , u64 capacity );

That's the whole signature, character for character, no cap. Returns an int, takes two things, and we're gonna meet them right now 🫶

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🎀 ARGUMENTS 🎀

• cxlds — pointer to cxl_dev_state. it's the state struct for the device, she's the main character here 👑
• capacity — device volatile memory size. a u64, so she can hold a lot of number, we love a big int 💖

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🌈 SEE ALSO 🌈

the kernel file ./drivers/cxl/core/memdev.c is the spot to go read next, and while you're there say hi to these icons bestie:

• set_exclusive_cxl_commands(9)
• clear_exclusive_cxl_commands(9)
• cxl_mem_get_fw_info(9)
• cxl_mem_activate_fw(9)
• cxl_mem_abort_fw_xfer(9)

all linked, all iconic, go read them fr fr 📚✨

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lowkey a reminder that this is kernel API territory — cxlds needs to actually be a valid pointer to a struct cxl_dev_state, so pls don't be out here passing vibes instead of pointers 😭🙈

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and that's the page!! 🎀 written out of ./drivers/cxl/core, dated October 2026, and yeah the page is literally named cxl_set_capacity(9) — slay, bye bestie 💜🦋🌸