STRUCT VDUSE_VQ_CONFIG(9)

💜 struct vduse_vq_config(9) — a little love letter from the Kernel API Manual

okay so bestie, picture this: it's a struct that holds the basic configuration of a virtqueue, and it lives in the Kernel API Manual. that's the whole vibe. she's small, she's humble, she's doing her job. periodt. ✨

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🌸 NAME

struct vduse_vq_config — literally just the basic configuration of a virtqueue. that's it. that's her whole personality. 🎀

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🦋 SYNOPSIS

struct vduse_vq_config {
    __u32 index;
    __u16 max_size;
    __u16 reserved1;
    __u32 group;
    __u16 reserved2[10];
 };

look at her. five fields. clean lines. main character energy fr fr. 💅

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👑 Members

• index — the virtqueue index. which queue are we talking about? this one. right here. 📍
• max_size — the max size of the virtqueue. the ceiling. the limit. she said "this is how big I get." 🔥
• reserved1 — reserved for future use, and you need to initialize it to zero. not optional, bestie. zero. 🫶
• group — the virtqueue group. yes she's in a group chat. everyone is. 🎀
• reserved2 — also reserved for future use, and also needs to be initialized to zero. it's an array of 10, so like... zero every single one of them. no cap. 😭

lowkey important: reserved1 and reserved2 are for future use and must be initialized to zero. don't get cute with them. 💀

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🌈 Description

this struct is the one used by the VDUSE_VQ_SETUP ioctl to setup a virtqueue. that's the assignment. she was built for one job and she ate. 🔥✨

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🧚 SEE ALSO

• Kernel file ./include/uapi/linux/vduse.h
• struct vduse_dev_config(9)
• struct vduse_iotlb_entry(9)
• struct vduse_config_data(9)
• struct vduse_vq_state_split(9)
• struct vduse_vq_state_packed(9)
• struct vduse_vq_group_asid(9)
• struct vduse_vq_info(9)
• struct vduse_vq_eventfd(9)
• struct vduse_iova_umem(9)
• struct vduse_iova_info(9)
• struct vduse_iotlb_entry_v2(9)
• enum vduse_req_type(9)
• struct vduse_vq_state(9)
• struct vduse_dev_status(9)
• struct vduse_iova_range(9)
• struct vduse_iova_range_v2(9)
• struct vduse_vq_ready(9)
• struct vduse_dev_request(9)
• struct vduse_dev_response(9)

like, the whole friend group. go say hi. 👋💖

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🫶 sign-off

shoutout to the kernel file ./include/uapi/linux, dated October 2026, and to struct vduse_vq_config(9) herself. she's iconic, she's documented, she's thriving. mwah. 💋🌈⭐