STRUCT IOMMU_VEVENT_TEGRA241_CMDQV(9)

💅 struct iommu_vevent_tegra241_cmdqv(9) — Kernel API Manual 🎀

okay so bestie, welcome to the Kernel API Manual, and today's main character is a lil struct straight out of ./include/uapi/linux 🦋 this is struct iommu_vevent_tegra241_cmdqv(9) and honestly? she's small, she's specific, and she's the Tegra241 CMDQV IRQ (aka IOMMU_VEVENTQ_TYPE_TEGRA241_CMDQV) ✨

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🌸 NAME 🌸

struct iommu_vevent_tegra241_cmdqv — the Tegra241 CMDQV IRQ, also known as IOMMU_VEVENTQ_TYPE_TEGRA241_CMDQV 💖

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✨ SYNOPSIS ✨

struct iommu_vevent_tegra241_cmdqv {
    __aligned_le64 lvcmdq_err_map[2];
 };

like, that's it. that's the whole struct. two elements. iconic minimalism 👑

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🫶 Members 🫶

• lvcmdq_err_map — a 128-bit logical vcmdq error map, little-endian. ngl this is the one pulling all the weight. (go check the register LVCMDQ_ERR_MAPs per VINTF — that's where the lore lives 📖)

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💜 Description 💜

so the way this works: that 128-bit register value coming straight from HW exclusively reflects the error bits for a Virtual Interface represented by a vIOMMU object. no extra interpretation, no guessing games — you read it and you report it directly. periodt 💅

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🔥 SEE ALSO 🔥

• Kernel file ./include/uapi/linux/iommufd.h
• General ioctl format(9)
• struct iommu_destroy(9)
• struct iommu_ioas_alloc(9)
• struct iommu_iova_range(9)
• struct iommu_ioas_iova_ranges(9)
• struct iommu_ioas_allow_iovas(9)
• enum iommufd_ioas_map_flags(9)
• struct iommu_ioas_map(9)
• struct iommu_ioas_noiommu_get_pa(9)
• struct iommu_ioas_map_file(9)
• struct iommu_ioas_copy(9)
• struct iommu_ioas_unmap(9)
• enum iommufd_option(9)
• enum iommufd_option_ops(9)
• struct iommu_option(9)
• enum iommufd_vfio_ioas_op(9)
• struct iommu_vfio_ioas(9)
• enum iommufd_hwpt_alloc_flags(9)
• enum iommu_hwpt_vtd_s1_flags(9)
• struct iommu_hwpt_vtd_s1(9)
• struct iommu_hwpt_arm_smmuv3(9)
• struct iommu_hwpt_amd_guest(9)
• enum iommu_hwpt_data_type(9)
• struct iommu_hwpt_alloc(9)
• enum iommu_hw_info_vtd_flags(9)
• struct iommu_hw_info_vtd(9)
• enum iommu_hw_info_arm_smmuv3_flags(9)
• struct iommu_hw_info_arm_smmuv3(9)
• struct iommu_hw_info_tegra241_cmdqv(9)
• struct iommu_hw_info_amd(9)
• enum iommu_hw_info_type(9)
• enum iommufd_hw_capabilities(9)
• enum iommufd_hw_info_flags(9)
• struct iommu_hw_info(9)
• struct iommu_hwpt_set_dirty_tracking(9)
• enum iommufd_hwpt_get_dirty_bitmap_flags(9)
• struct iommu_hwpt_get_dirty_bitmap(9)
• enum iommu_hwpt_invalidate_data_type(9)
• enum iommu_hwpt_vtd_s1_invalidate_flags(9)
• struct iommu_hwpt_vtd_s1_invalidate(9)
• struct iommu_viommu_arm_smmuv3_invalidate(9)
• struct iommu_hwpt_invalidate(9)
• enum iommu_hwpt_pgfault_flags(9)
• enum iommu_hwpt_pgfault_perm(9)
• struct iommu_hwpt_pgfault(9)
• enum iommufd_page_response_code(9)
• struct iommu_hwpt_page_response(9)
• struct iommu_fault_alloc(9)
• enum iommu_viommu_type(9)
• struct iommu_viommu_tegra241_cmdqv(9)
• struct iommu_viommu_alloc(9)
• struct iommu_vdevice_alloc(9)
• struct iommu_ioas_change_process(9)
• enum iommu_veventq_flag(9)
• struct iommufd_vevent_header(9)
• enum iommu_veventq_type(9)
• struct iommu_vevent_arm_smmuv3(9)
• struct iommu_veventq_alloc(9)
• enum iommu_hw_queue_type(9)
• struct iommu_hw_queue_alloc(9)

like yes that's a lot of cross-refs but bestie they're all literally right there, go read them iykyk 📚✨

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lowkey reminder: this whole page lives in ./include/uapi/linux — that's the source, don't lose it 🍓

aaaand that's the page! came from ./include/uapi/linux, dated October 2026, and it's all about struct iommu_vevent_tegra241_cmdqv(9) — mwah, slay, bye 💋🌈