STRUCT DRM_I915_GETPARAM(9)

💅 struct drm_i915_getparam(9)

okay so bestie, welcome to the Kernel API Manual section, because we're talking about struct drm_i915_getparam(9) today and honestly? it's giving "tiny struct, big responsibilities." 🎀

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✨ NAME ✨

struct drm_i915_getparam — the driver parameter query structure. that's it, that's the whole vibe. you hand it a parameter, it hands you back a value. a little query-and-response moment. 🦋

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🌸 SYNOPSIS 🌸

like, literally this is the whole thing:

struct drm_i915_getparam {
    __s32 param;
    int __user *value;
 };

look at her. two fields. main character energy with zero filler. ✨

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💖 Members 💖

bestie, let's meet the cast:

• param — the driver parameter you're querying. this is the "hey, what's the deal with this" field. you pick the thing you wanna know about. 🔍
• value — the address of the memory where the queried value should be put. so like, you bring the empty container and the kernel fills it up. iconic division of labour. 🫶

⚠️ WARNING: using pointers instead of fixed-size u64 means we need to write compat32 code. Don't repeat this mistake. no cap, this is a genuine "learn from our pain" moment — the manpage is literally telling you not to do the thing. respect the warning. 💀

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🌈 SEE ALSO 🌈

okay this list is long and I'm obsessed, go read all of it:

• Kernel file ./tools/perf/trace/beauty/include/uapi/drm/i915_drm.h
• uevents generated by i915 on its device node(9)
• struct i915_user_extension(9)
• enum drm_i915_gem_engine_class(9)
• struct i915_engine_class_instance(9)
• perf_events exposed by i915 through /sys/bus/event_sources/drivers/i915(9)
• drm_i915_getparam_t(9)
• struct drm_i915_gem_mmap_offset(9)
• struct drm_i915_gem_set_domain(9)
• struct drm_i915_gem_exec_fence(9)
• struct drm_i915_gem_execbuffer_ext_timeline_fences(9)
• struct drm_i915_gem_execbuffer2(9)
• struct drm_i915_gem_caching(9)
• struct drm_i915_gem_context_create_ext(9)
• struct drm_i915_gem_context_param(9)
• Virtual Engine uAPI(9)
• struct i915_context_engines_parallel_submit(9)
• Context Engine Map uAPI(9)
• struct drm_i915_gem_context_create_ext_setparam(9)
• struct drm_i915_gem_vm_control(9)
• struct drm_i915_gem_userptr(9)
• struct drm_i915_perf_oa_config(9)
• struct drm_i915_query_item(9)
• struct drm_i915_query(9)
• struct drm_i915_query_topology_info(9)
• Engine Discovery uAPI(9)
• struct drm_i915_engine_info(9)
• struct drm_i915_query_engine_info(9)
• struct drm_i915_query_perf_config(9)
• enum drm_i915_gem_memory_class(9)
• struct drm_i915_gem_memory_class_instance(9)
• struct drm_i915_memory_region_info(9)
• struct drm_i915_query_memory_regions(9)
• struct drm_i915_query_guc_submission_version(9)
• GuC HWCONFIG blob uAPI(9)
• struct drm_i915_gem_create_ext(9)
• struct drm_i915_gem_create_ext_memory_regions(9)
• struct drm_i915_gem_create_ext_protected_content(9)
• struct drm_i915_gem_create_ext_set_pat(9)

like, she knows everyone. networking queen. 👑

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and that's the page!! mwah 💋 this one came from ./tools/perf/trace/beauty/incl... (yes it's truncated in the source, not my fault bestie 😭) and it's dated October 2026 — so go forth and query your params, but please use a fixed-size u64, the kernel is begging you. 🍓🧚‍♀️