pci_rebar_size_supported(9)

💅 pci_rebar_size_supported ✨

okay so bestie, this is a kernel API manual page — specifically the one for pci_rebar_size_supported(9) from the Kernel API Manual. she's a lil bool-returning cutie and honestly? iconic. let's get into it 🎀

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🌸 NAME 🌸

pci_rebar_size_supported — check if size is supported for BAR

like literally, that's her whole job. she checks the size. for the BAR. no cap. 💖

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🦋 SYNOPSIS 🦋

bool pci_rebar_size_supported (struct pci_dev *pdev , int bar , int size
);

that's it. three arguments. returning a bool. clean, simple, main character energy fr fr ✨

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💜 ARGUMENTS 💜

• pdev — the PCI device. the actual guy you're asking about 🫶
• bar — the BAR to check. yes, that BAR. the one you want the tea on 👀
• size — the encoded size, exactly as defined in the PCIe spec. and listen, the encoding is a whole vibe: 0=1MB, 31=128TB. so like, the numbers are NOT bytes, they're the encoded form, iykyk. don't come in here passing raw byte counts, she will clock it 💀

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⭐ RETURN ⭐

Returns true if bar is resizable and size is supported. otherwise false. both conditions, babes — resizable alone isn't enough, the size gotta be on the list too. periodt. 👑

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🌈 SEE ALSO 🌈

• Kernel file: ./drivers/pci/rebar.c
• pci_rebar_bytes_to_size(9)
• pci_rebar_size_to_bytes(9)
• pci_rebar_find_pos(9)
• pci_rebar_get_possible_sizes(9)
• pci_rebar_get_max_size(9)
• pci_rebar_get_current_size(9)
• pci_rebar_set_size(9)
• pci_resize_resource(9)

the whole rebar friend group honestly. go read them all, they're all slay, they all live in ./drivers/pci 🧚

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ok that's the whole page bestie, no filler, no missing options, every single reference accounted for 💅

and that's a wrap! this lil beauty came out of the ./drivers/pci directory, dated October 2026, and she's a proud pci_rebar_size_supported(9) from the Kernel API Manual. mwah 💋🌸✨