STRUCT VIRTIO_PCM(9)

💖 struct virtio_pcm(9) — your new fave kernel API manual, bestie 💖

okay so you're reading the manual page for struct virtio_pcm, from the Kernel API Manual (yes that one, section 9, we love her). She's the VirtIO PCM device✨ — literally the lil struct that holds your audio life together. Let's get into it.

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🎀 NAME 🎀

struct virtio_pcm — the VirtIO PCM device. that's it, that's the vibe. it's giving "audio but make it virtualized" 💅

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✨ SYNOPSIS ✨

here's the whole glow-up, no cap, copy it exactly:

struct virtio_pcm {
    struct list_head list;
    u32 nid;
    struct snd_pcm *pcm;
    struct virtio_pcm_stream streams[SNDRV_PCM_STREAM_LAST + 1];
 };

like… iconic. four members, zero notes. 🫶

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🌸 Members 🌸

okay bestie, let's do a vibe check on every single field, one by one, because we do NOT skip members in this house:

• list — the VirtIO PCM list entry. she's the linkage, the connective tissue, the "who's in my group chat" energy 🔗
• nid — the function group node identifier. a u32. it's her ID, her legal name, her passport 🪪
• pcm — the kernel PCM device (that's a struct snd_pcm *). the main character, honestly 👑
• streams — the VirtIO PCM streams, aka playback AND capture, living in an array of size SNDRV_PCM_STREAM_LAST + 1. both directions, because she's versatile like that 🦋

not me being obsessed with a struct that just… holds four things. and yet. 🔥

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👀 SEE ALSO 👀

go read these next, fr fr, iykyk:

• the kernel file ./sound/virtio/virtio_pcm.h
• struct virtio_pcm_substream(9)
• struct virtio_pcm_stream(9)

they're all in the same clique, you'll love them 🌈

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💜 and that's the whole page! mwah! this one lives in ./sound/virtio, October 2026 edition, and it slayed. go forth and read the header file, bestie — periodt. 💅✨🎀