msi_create_p...t_irq_domain(9)

🌸 NAME 🌸

okay bestie, welcome to the msi_create_parent_irq_domain(9) page from the Kernel API Manual — this one is literally here to create an MSI-parent interrupt domain. iconic behavior, no cap 💅

✨ SYNOPSIS ✨

struct irq_domain * msi_create_parent_irq_domain (struct irq_domain_info
*info , const struct msi_parent_ops *msi_parent_ops );

🎀 ARGUMENTS 🎀

• info — the MSI irqdomain creation info 🫶
• msi_parent_ops — the MSI parent callbacks and configuration ✨

🔥 RETURN 🔥

it gives you a pointer to the created struct irq_domain — or NULL on failure, which is the sad little rain cloud moment 😭

🦋 SEE ALSO 🦋

the kernel file is ./kernel/irq/msi.c, and these are all the besties in the group chat:

• 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_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_locked(9)
• msi_domain_free_irqs_all(9)
• msi_device_domain_free_wired(9)
• msi_get_domain_info(9)
• msi_device_has_isolated_msi(9)

mwah 💋 bestie, that’s the whole page — source/version: ./kernel/irq; date: October 2026; page: msi_create_p...t_irq_domain(9) 🌈💖