pcie_set_readrq(9)

📦 version 7.3.1, in nixpkgs unstable

💖 pcie_set_readrq(9) — Kernel API Manual 💖

okay so bestie, welcome to the pcie_set_readrq(9) page, brought to you by the Kernel API Manual ✨ this one's short and sweet and it's literally all about telling your PCI Express device how big a bite it's allowed to take when it reads memory. no cap.

🌸 NAME 🌸

pcie_set_readrq — set PCI Express maximum memory read request

🦋 SYNOPSIS 🦋

int pcie_set_readrq (struct pci_dev *dev , int rq );

🎀 ARGUMENTS 🎀

  • dev — the PCI device you're querying, bestie. that's your main character right there 💅
  • rq — the maximum memory read count in bytes. the valid values are literally 128, 256, 512, 1024, 2048, 4096 — pick one, don't be weird about it 🙈

✨ DESCRIPTION ✨

if possible, it sets the maximum memory read request in bytes 🫶 that's it. that's the whole vibe.

ngl the "if possible" is doing a lot of work there — it's giving "we'll try our best" energy, not a guarantee 😭

👑 SEE ALSO 👑

the kernel file lives at ./drivers/pci/pci.c — go peek if you're nosy 🔥

and here's the whole friend group, in order, no one left out 💜

and that's the whole page 🎀 shoutout to the source tree ./drivers/pci, dated October 2026, and the page itself is pcie_set_readrq(9) — ily, go set some read requests, slay 💅✨🦋

📦 where this page comes from