param_set_vmidfilter(9)

💖 param_set_vmidfilter(9) 💖

okay bestie, welcome to param_set_vmidfilter(9), straight outta the Kernel API Manual — we're setting a z/VM user ID filter parameter, and it's lowkey iconic. ✨

🌸 NAME 🌸

param_set_vmidfilter — Set z/VM user ID filter parameter. 💅

✨ SYNOPSIS ✨

int param_set_vmidfilter (const char *val , const struct kernel_param *kp );

🎀 ARGUMENTS 🎀

• const char *val — a string consisting of a comma-separated list of z/VM user IDs. literally the invite list, bestie. 🫶
• const struct kernel_param *kp — kernel parameter pointing to the hvc_iucv_filter array. yep, that's the pointer situation. 👑

💖 DESCRIPTION 💖

The function sets up the z/VM user ID filter specified as a comma-separated list of user IDs in val. no cap, that's the move. 🌈

💀 NOTE 💀

If it is called early in the boot process, val is stored and parsed later in hvc_iucv_init. so it's not being skipped, it's just on a lil delay. 😭✨

🦋 SEE ALSO 🦋

Kernel file: ./drivers/tty/hvc/hvc_iucv.c

• hvc_iucv_get_private(9)
• alloc_tty_buffer(9)
• destroy_tty_buffer(9)
• destroy_tty_buffer_list(9)
• hvc_iucv_write(9)
• hvc_iucv_get_chars(9)
• hvc_iucv_queue(9)
• hvc_iucv_send(9)
• hvc_iucv_sndbuf_work(9)
• hvc_iucv_put_chars(9)
• hvc_iucv_notifier_add(9)
• hvc_iucv_cleanup(9)
• tty_outqueue_empty(9)
• flush_sndbuf_sync(9)
• hvc_iucv_hangup(9)
• hvc_iucv_notifier_hangup(9)
• hvc_iucv_dtr_rts(9)
• hvc_iucv_notifier_del(9)
• hvc_iucv_filter_connreq(9)
• hvc_iucv_path_pending(9)
• hvc_iucv_path_severed(9)
• hvc_iucv_msg_pending(9)
• hvc_iucv_msg_complete(9)
• hvc_iucv_alloc(9)
• hvc_iucv_destroy(9)
• hvc_iucv_parse_filter(9)
• hvc_iucv_setup_filter(9)
• param_get_vmidfilter(9)
• hvc_iucv_init(9)
• hvc_iucv_config(9)

with love from source/version ./drivers/tty/hvc, dated October 2026 — mwah, bestie 💋💜