pci_p2pdma_add_resource(9)

💖 pci_p2pdma_add_resource(9) — Kernel API Manual 💖

okay bestie, welcome to the Kernel API Manual page for pci_p2pdma_add_resource(9). it's giving “let's make some memory p2p-ready” energy, and honestly? iconic. ✨💅

🎀 NAME 🎀

pci_p2pdma_add_resource — add memory for use as p2p memory. periodt. 💖

✨ SYNOPSIS ✨

       int pci_p2pdma_add_resource (struct pci_dev *pdev , int bar , size_t
       size , u64 offset );

🫶 ARGUMENTS 🫶

• pdev — the device to add the memory to. this is the main character device getting the memory glow-up. 👑
• bar — the PCI BAR to add. yes bestie, that BAR. 🎀
• size — size of the memory to add; it may be zero to use the whole BAR. zero means whole BAR, no cap. 💯
• offset — offset into the PCI BAR. it's the starting point. 📍

💖 DESCRIPTION 💖

okay so the memory will be given ZONE_DEVICE struct pages, so that it may be used with any DMA request. that's the whole point, and it ate. 🔥

🦋 SEE ALSO 🦋

Kernel file: ./drivers/pci/p2pdma.c

• pcim_p2pdma_init(9)
• pcim_p2pdma_provider(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)

and that's the page, bestie! this was pci_p2pdma_add_resource(9) from the Kernel API Manual, served from ./drivers/pci with the October 2026 date. signing off with maximum p2p energy. 💜🦋🎀