hv_pci_probe(9)

💅 hv_pci_probe(9) — like, the Kernel API Manual, but make it a vibe 💅

okay bestie, buckle up, because this one is from the Kernel API Manual and it's all about hv_pci_probe — the probe for a brand-new VMBus channel that's specifically for a root PCI bus. no cap, this is the moment the whole bus gets noticed. 🦋

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✨ NAME ✨

hv_pci_probe — the "new VMBus channel just dropped" probe, but make it for a root PCI bus 💖

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🌸 SYNOPSIS 🌸

int hv_pci_probe (struct hv_device *hdev , const struct
hv_vmbus_device_id *dev_id );

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🎀 ARGUMENTS 🎀

• hdev — VMBus's own tracking struct for this root PCI bus. it's literally the bus's little diary where VMBus keeps tabs on it 🫶
• dev_id — this one identifies the device itself. iykyk, it's the name tag at the door 👑

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⭐ RETURN ⭐

• 0 on success — slay, we ate 💅
• -errno on failure — not the vibe, but at least it's informative 😭

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🌈 SEE ALSO 🌈

so there's a whole friend group here, and honestly they all deserve a mention. starting with the kernel file itself:

Kernel file ./drivers/pci/controller/pci-hyperv.c, plus:

• 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_register_block_invalidate(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_remove(9)

like, the whole squad. go read them, they're iconic 👑

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and that's the whole page, bestie — no filler, all facts, main character energy only. this one came from ./drivers/pci/controller and it's dated October 2026, so yeah, mark your calendar 🗓️💜 mwah 💋