pci_rebar_bytes_to_size(9)

✨ pci_rebar_bytes_to_size(9) ✨

okay so this is a kernel API manual page, and bestie, it's literally all about turning a size in bytes into something the PCI hardware actually understands 💅 the manual name is pci_rebar_bytes_to_size(9) and yes it's giving main character energy, let's get into it 🫶

🌸 NAME 🌸

pci_rebar_bytes_to_size — the glow-up function that converts a size in bytes into a PCI BAR Size, no cap ✨

🎀 SYNOPSIS 🎀

int pci_rebar_bytes_to_size (u64 bytes );

🦋 ARGUMENTS 🦋

• bytes — the size in bytes, like the raw truth before the makeover 💖

💜 DESCRIPTION 💜

So here's the vibe: this function converts a size in bytes into an encoded BAR Size in the Resizable BAR Capability (PCIe r6.2, sec. 7.8.6.3). It's lowkey a translator between your cute little byte number and the encoded form the PCIe spec speaks 🔥

⭐ RETURN ⭐

It returns the encoded BAR Size as defined in the PCIe spec — and the spec's scale is iconic: 0=1MB, 31=128TB 😭 the range is literally unhinged and I'm obsessed.

🌈 SEE ALSO 🌈

• Kernel file ./drivers/pci/rebar.c
• pci_rebar_size_to_bytes(9) — the reverse glow-up, iykyk 💫
• pci_rebar_find_pos(9)
• pci_rebar_get_possible_sizes(9)
• pci_rebar_size_supported(9)
• pci_rebar_get_max_size(9)
• pci_rebar_get_current_size(9)
• pci_rebar_set_size(9)
• pci_resize_resource(9)

that's the whole page bestie, every flag-free detail intact and every SEE ALSO reference accounted for 💅 it lives in ./drivers/pci, and the source/version stamp dates it to October 2026 — so mark your calendars, periodt 🎀✨💖