ENUM PCM_MSG_SG_INDEX(9)

💅 enum pcm_msg_sg_index(9) — the kernel API manual glow-up

okay so bestie, this is the manual page for enum pcm_msg_sg_index(9), and honestly? it's a tiny little enum with main character energy, because it's literally the index values for the virtio_pcm_msg->sgs field in an I/O message. like that's the whole job. iconic. 🎀

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✨ NAME ✨

enum pcm_msg_sg_index — the index values for the virtio_pcm_msg->sgs field in an I/O message. no cap, that's it, that's the vibe. 🦋

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🌸 SYNOPSIS 🌸

enum pcm_msg_sg_index {
    PCM_MSG_SG_XFER ,
    PCM_MSG_SG_STATUS ,
    PCM_MSG_SG_DATA

};

look at her. three little members, all in a row, living their best life. 🫶

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👑 Constants 👑

the group chat members of this enum, one by one, no skipping, periodt:

• PCM_MSG_SG_XFER — the element containing a virtio_snd_pcm_xfer structure. that's her job, that's what she holds. 💖
• PCM_MSG_SG_STATUS — the element containing a virtio_snd_pcm_status structure. status? she has it. 🔥
• PCM_MSG_SG_DATA — the first element containing a data buffer. not the second, not the third, the first. ooh and note that "first" is load-bearing, iykyk. ⭐

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🦋 SEE ALSO 🦋

bestie, the lore goes deep, here's the whole friend group, don't lose a single one:

• the kernel file ./sound/virtio/virtio_pcm_msg.c
• struct virtio_pcm_msg(9)
• virtsnd_pcm_sg_num(9)
• virtsnd_pcm_sg_from(9)
• virtsnd_pcm_msg_alloc(9)
• virtsnd_pcm_msg_free(9)
• virtsnd_pcm_msg_send(9)
• virtsnd_pcm_msg_pending_num(9)
• virtsnd_pcm_msg_complete(9)
• virtsnd_pcm_notify_cb(9)
• virtsnd_pcm_tx_notify_cb(9)
• virtsnd_pcm_rx_notify_cb(9)
• virtsnd_pcm_ctl_msg_alloc(9)

like?? twelve plus a struct?? she's connected fr fr. 🌈

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heads up bestie: every one of those references keeps its (9) suffix exactly as written — that's the section number, don't come for me. 💀

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and that's the page! mwah 💅 from ./sound/virtio, dated October 2026, still serving enum pcm_msg_sg_index(9). go read it again if you need to, she's short and she knows it. 🧚💜✨