msi_domain_...s_all_locked(9)

💖 msi_domain_...s_all_locked(9) 💖

✨ NAME ✨

msi_domain_free_irqs_all_locked — frees all interrupts from a MSI interrupt domain associated to a device. This is the Kernel API Manual entry for it, and it's giving “clean up every interrupt in this MSI domain” energy 💅.

💅 SYNOPSIS 💅

okay so the signature is literally:

void msi_domain_free_irqs_all_locked (struct device *dev , unsigned int
       domid );

It's a void function, bestie — it just does the freeing. ✨

🫶 ARGUMENTS 🫶

• dev — pointer to the device struct of the device for which the interrupts are freed 🫶
• domid — the id of the domain to operate on 🔥

🔥 DESCRIPTION 🔥

okay so here's the vibe check: this must be invoked from within a msi_lock_descs / msi_unlock_descs pair. Like, literally do not call it outside that lock sandwich 🥪.

Use this for MSI irqdomains which implement their own vector allocation. That's the whole point, bestie — they handle vector allocation themselves 👑.

🚨 Lock warning: the msi_lock_descs / msi_unlock_descs pair is mandatory. This is not a “maybe lock it if you feel like it” situation, no cap 💀

🌈 SEE ALSO 🌈

The whole SEE ALSO squad is here, starting with the kernel file — every ref, in order:

• Kernel file: ./kernel/irq/msi.c
• struct msi_device_data(9)
• struct msi_ctrl(9)
• msi_alloc_desc(9)
• msi_domain_insert_msi_desc(9)
• msi_domain_free_msi_descs_range(9)
• msi_domain_add_simple_msi_descs(9)
• msi_setup_device_data(9)
• __msi_lock_descs(9)
• __msi_unlock_descs(9)
• msi_domain_first_desc(9)
• msi_next_desc(9)
• msi_domain_get_virq(9)
• msi_device_populate_sysfs(9)
• msi_device_destroy_sysfs(9)
• msi_domain_set_affinity(9)
• msi_create_irq_domain(9)
• msi_create_parent_irq_domain(9)
• msi_parent_init_dev_msi_info(9)
• msi_create_device_irq_domain(9)
• msi_remove_device_irq_domain(9)
• msi_match_device_irq_domain(9)
• msi_domain_alloc_irqs_range_locked(9)
• msi_domain_alloc_irqs_range(9)
• msi_domain_alloc_irqs_all_locked(9)
• msi_domain_alloc_irq_at(9)
• msi_device_domain_alloc_wired(9)
• msi_domain_free_irqs_range_locked(9)
• msi_domain_free_irqs_range(9)
• msi_domain_free_irqs_all(9)
• msi_device_domain_free_wired(9)
• msi_get_domain_info(9)
• msi_device_has_isolated_msi(9)

That's the whole page, bestie 🫶 — source/version ./kernel/irq, dated October 2026. Bye 💖