virtqueue_map_mapping_error(9)

📦 version 7.3.1, in nixpkgs unstable

💖 virtqueue_map_mapping_error — like, the Kernel API Manual page you actually wanna read 🎀

okay so bestie, welcome to the virtqueue_map_mapping_error(9) page — yes that's the whole name, yes it's a mouthful, no we're not shortening it, it's iconic as-is ✨

🌸 NAME 🌸

virtqueue_map_mapping_error — check dma address 👀💅

🦋 SYNOPSIS 🦋

int virtqueue_map_mapping_error (const struct virtqueue *_vq ,
dma_addr_t addr );

like, that's the whole call. she's small but she's doing her job 🫶

🎀 ARGUMENTS 🎀

  • _vq — the struct virtqueue we're talking about. yes, the one with the underscore, that's literally how it's spelled, don't come for me 😭
  • addr — the DMA address. the one we're checking. the whole point of this function, honestly 💀

⭐ DESCRIPTION ⭐

okay so here's the tea, and it's a short one:

Returns 0 means dma valid. Anything other than that means invalid dma address. periodt. 🔥

that's it. that's the function. she returns an int and she tells you whether your DMA address is valid or not, no notes, no extra lore, no cap 💖

ngl bestie this one's a lil minimal but like, not every manpage needs to be a whole saga. she checks the address and she goes home ✨

🌈 SEE ALSO 🌈

the whole friend group, gathered here — and fr fr, the Kernel file is ./drivers/virtio/virtio_ring.c 👑

kay that's the page!! 🧚 mwah 💋

this little number lives in ./drivers/virtio and the version/date on the tin is October 2026 — so yeah, she's from the future, main character energy fr fr 🌸✨

📦 where this page comes from