hv_register_...k_invalidate(9)

okay so bestie, this is hv_register_...k_invalidate(9) from the Kernel API Manual — manual name folded in right here like a little name tag 🫶✨

✨ NAME ✨

hv_register_block_invalidate — this is the one that gets invoked when a config block invalidation arrives from the back-end driver. that's the whole vibe, no cap 💅

🩷 SYNOPSIS 🩷

here's the exact signature, copied with love and zero edits:

       int hv_register_block_invalidate (struct pci_dev *pdev , void *context ,
       void (*block_invalidate)(void *context, u64 block_mask) );

🎀 ARGUMENTS 🎀

the cast, in order:

• pdev — the PCI driver's representation for this device 🫶
• context — identifies the device 💖
• block_invalidate — identifies all of the blocks being invalidated 🎀

🔥 RETURN 🔥

what comes back:

• 0 — success, slay ✅
• -errno — failure, and that's the tea 😭

🦋 SEE ALSO 🦋

Kernel file ./drivers/pci/controller/pci-hyperv.c — that's home base. and then the whole reference group chat:

• struct hv_msi_desc(9)
• struct hv_msi_desc2(9)
• struct tran_int_desc(9)
• hv_irq_retarget_interrupt(9)
• hv_pci_generic_compl(9)
• devfn_to_wslot(9)
• wslot_to_devfn(9)
• _hv_pcifront_read_config(9)
• _hv_pcifront_write_config(9)
• hv_pcifront_read_config(9)
• hv_pcifront_write_config(9)
• hv_pci_read_config_compl(9)
• hv_read_config_block(9)
• hv_pci_write_config_compl(9)
• hv_write_config_block(9)
• hv_msi_free(9)
• hv_compose_msi_msg(9)
• hv_pcie_init_irq_domain(9)
• get_bar_size(9)
• survey_child_resources(9)
• prepopulate_bars(9)
• create_root_hv_pci_bus(9)
• q_resource_requirements(9)
• new_pcichild_device(9)
• get_pcichild_wslot(9)
• pci_devices_present_work(9)
• hv_pci_start_relations_work(9)
• hv_pci_devices_present(9)
• hv_pci_devices_present2(9)
• hv_eject_device_work(9)
• hv_pci_eject_device(9)
• hv_pci_onchannelcallback(9)
• hv_pci_protocol_negotiation(9)
• hv_pci_free_bridge_windows(9)
• hv_pci_allocate_bridge_windows(9)
• hv_allocate_config_window(9)
• hv_pci_enter_d0(9)
• hv_pci_query_relations(9)
• hv_send_resources_allocated(9)
• hv_send_resources_released(9)
• hv_pci_probe(9)
• hv_pci_remove(9)

okay that's the page, bestie 💖 source/version: ./drivers/pci/controller; date: October 2026. byeee 🫶✨