STRUCT CXL_ENDPOINT_DVSEC_INFO(9)

✨ struct cxl_endpoint_dvsec_info(9) ✨

okay bestie so this is a page from the Kernel API Manual and it's all about struct cxl_endpoint_dvsec_info — literally the struct that holds your Cached DVSEC info 💅 buckle up, it's short but it's iconic.

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🌸 NAME 🌸

struct cxl_endpoint_dvsec_info — Cached DVSEC info 🎀

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🦋 SYNOPSIS 🦋

struct cxl_endpoint_dvsec_info {
    bool mem_enabled;
    int ranges;
    struct cxl_port *port;
    struct range dvsec_range[2];
 };

like… look at her. four members. no notes. 👑

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💖 Members 💖

• mem_enabled — the cached value of mem_enabled in the DVSEC, snapshotted at init time 🫶 (so like, whatever it was back then, that's what you're getting now, no cap).
• ranges — number of active HDM ranges this device uses. literally just counting how many ranges are doing the thing 🔥
• port — the endpoint port associated with this info instance. it's giving "this struct's plus-one" 💜
• dvsec_range — cached attributes of the ranges in the DVSEC, PCIE_DEVICE 🌸

ok important vibe check bestie: dvsec_range is declared as struct range dvsec_range[2]; in the synopsis, and the description just says "cached attributes of the ranges in the DVSEC, PCIE_DEVICE" — that's exactly what the original gives us, so that's exactly what you get. no extra lore, i don't make the rules 🙈

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🌈 SEE ALSO 🌈

the kernel file is ./drivers/cxl/cxl.h — go read it, it's right there 🧚

and then the whole squad:

• cxl objects(9)
• struct cxl_decoder(9)
• struct cxl_endpoint_decoder(9)
• struct cxl_switch_decoder(9)
• struct cxl_rd_ops(9)
• struct cxl_root_decoder(9)
• struct cxl_region_params(9)
• struct cxl_region(9)
• struct cxl_port(9)
• struct cxl_root(9)
• struct cxl_dport(9)
• struct cxl_ep(9)
• struct cxl_region_ref(9)

like that's a full friend group right there, all ate 💀✨

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mwah 💋 that's the whole page — brought to you by the folks over at ./drivers/cxl, dated October 2026, and honestly? iconic of them. go forth and cache your DVSEC info, bestie 🫶🎀