pcim_p2pdma_init(9)

✨ pcim_p2pdma_init — a kernel API manual moment 💅

okay so bestie, we're in the Kernel API Manual, section 9 (that's the kernel-api girlies, iykyk) 💖. Buckle up, this one's short but iconic.

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🌸 NAME 🌸

pcim_p2pdma_init — literally just Initialise peer-to-peer DMA providers. that's the whole vibe. 🎀

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⭐ SYNOPSIS ⭐

int pcim_p2pdma_init (struct pci_dev *pdev );

that's it. one function, one argument, returns an int. she's lowkey minimal and we respect it. ✨

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🦋 ARGUMENTS 🦋

• pdev — the PCI device you want to enable P2PDMA for. she's the main character here, the whole reason we're gathered today. 🫶

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💜 DESCRIPTION 💜

okay so here's the tea, fr fr: this function initializes the peer-to-peer DMA infrastructure for a PCI device.

not me just saying "infrastructure" like it's nothing — she allocates and sets up all the necessary data structures to support P2PDMA operations, including mapping type tracking. so yeah, she's doing the behind-the-scenes setup work so the rest of the P2PDMA girlies can actually function. no cap, it's giving backstage crew at the met gala. 👑

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🌈 SEE ALSO 🌈

kernel file ./drivers/pci/p2pdma.c plus the whole friend group, all of whom are absolutely iconic:

• pcim_p2pdma_provider(9)
• pci_p2pdma_add_resource(9)
• pci_p2pdma_distance_many(9)
• pci_has_p2pmem(9)
• pci_p2pmem_find_many(9)
• pci_alloc_p2pmem(9)
• pci_free_p2pmem(9)
• pci_p2pmem_virt_to_bus(9)
• pci_p2pmem_alloc_sgl(9)
• pci_p2pmem_free_sgl(9)
• pci_p2pmem_publish(9)
• pci_p2pdma_map_type(9)
• pci_p2pdma_enable_store(9)
• pci_p2pdma_enable_show(9)

like, that's a whole squad. go say hi. 💕

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🎀 sign-off 🎀

that's the page bestie!! this one lives under ./drivers/pci and it's dated October 2026 — so yes, she's from the future and she's thriving. periodt. 💅✨