vfio_ap_mdev_hot_unplug_cfg(9)

✨ vfio_ap_mdev_hot_unplug_cfg(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this one's a function page, and it's lowkey a whole vibe — it's all about hot unplugging stuff from a guest. Let's get into it 🫶

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🌸 NAME 🌸

vfio_ap_mdev_hot_unplug_cfg — the function that hot unplugs the adapters, domains and control domains that have been removed from the host's AP configuration from a guest. like, the host said "these are gone now" and this function makes the guest act accordingly 💅

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🦋 SYNOPSIS 🦋

void vfio_ap_mdev_hot_unplug_cfg (struct ap_matrix_mdev *matrix_mdev ,
unsigned long *aprem , unsigned long *aqrem , unsigned long *cdrem );

it returns nothing (void), it just does the thing. periodt ✨

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🎀 ARGUMENTS 🎀

• matrix_mdev — an ap_matrix_mdev object attached to a KVM guest. this is the main character of the operation, iykyk 👑
• aprem — the adapters that have been removed from the host's AP configuration 🌈
• aqrem — the domains that have been removed from the host's AP configuration ⭐
• cdrem — the control domains that have been removed from the host's AP configuration.

so yeah, three separate "removed" masks: adapters, domains, control domains. keep 'em straight, bestie 💀

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💜 SEE ALSO 💜

the kernel file this lives in, fr fr:

• ./drivers/s390/crypto/vfio_ap_ops.c

and the whole friend group of related functions — literally the entire group chat 🫶:

• get_update_locks_for_kvm(9), release_update_locks_for_kvm(9), get_update_locks_for_mdev(9), release_update_locks_for_mdev(9), get_update_locks_by_apqn(9), get_update_locks_for_queue(9), vfio_ap_mdev_get_queue(9), vfio_ap_wait_for_irqclear(9), vfio_ap_free_aqic_resources(9), vfio_ap_irq_disable(9), vfio_ap_validate_nib(9), ensure_nib_shared(9), vfio_ap_irq_enable(9), vfio_ap_le_guid_to_be_uuid(9), handle_pqap(9), vfio_ap_mdev_verify_no_sharing(9), vfio_ap_mdev_validate_masks(9), assign_adapter_store(9), vfio_ap_mdev_unlink_adapter(9), unassign_adapter_store(9), assign_domain_store(9), unassign_domain_store(9), assign_control_domain_store(9), unassign_control_domain_store(9), vfio_ap_mdev_set_kvm(9), vfio_ap_mdev_unset_kvm(9), vfio_ap_mdev_resource_in_use(9), vfio_ap_mdev_cfg_remove(9), vfio_ap_mdev_on_cfg_remove(9), vfio_ap_filter_apid_by_qtype(9), vfio_ap_mdev_cfg_add(9), vfio_ap_mdev_on_cfg_add(9), vfio_ap_on_cfg_changed(9)

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aaand that's the whole page, bestie 🌸 mwah 💋 this one ships out of ./drivers/s390/crypto, dated October 2026, and it's filed under the Kernel API Manual as vfio_ap_mdev_hot_unplug_cfg(9) — iconic, no notes 🎀✨