ENUM DRM_GPUVM_FLAGS(9)

💅 enum drm_gpuvm_flags(9) — the group-chat rundown 🎀

okay so bestie, this is a page from the Kernel API Manual (that's the manual name, iykyk ✨) and it's literally all about the flags you can slap on a struct drm_gpuvm. yes. flags. for GPU virtual memory. we're doing this. 🦋

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✨ NAME ✨

enum drm_gpuvm_flags — the flags you use with struct drm_gpuvm 💖

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🌸 SYNOPSIS 🌸

here's the exact shape of it, no cap:

enum drm_gpuvm_flags {
    DRM_GPUVM_RESV_PROTECTED ,
    DRM_GPUVM_IMMEDIATE_MODE ,
    DRM_GPUVM_USERBITS

};

look at her. three members. main character energy. 👑

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⭐ Constants ⭐

okay so here's what each one actually means, fr fr:

• DRM_GPUVM_RESV_PROTECTED — this GPUVM is protected externally by the GPUVM's own dma_resv lock 🔒 (yes, externally, that's the whole vibe)
• DRM_GPUVM_IMMEDIATE_MODE — this one uses the locking scheme for GEMs that's designed for modifying the GPUVM during the fence signalling path 🧚

like, when it's set, gpuva.lock is the thing protecting gpuva.list in all GEM objects associated with this GPUVM. but when it's not set? then the GEMs dma-resv gets used instead. two totally different lock situations, don't mix them up bestie 😭

• DRM_GPUVM_USERBITS — user defined bits 🫶 (they're yours, do what you want, that's the whole point)

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🦋 SEE ALSO 🦋

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

Kernel file ./include/drm/drm_gpuvm.h

• enum drm_gpuva_flags(9)
• struct drm_gpuva(9)
• drm_gpuva_invalidate(9)
• drm_gpuva_invalidated(9)
• struct drm_gpuvm(9)
• drm_gpuvm_get(9)
• drm_gpuvm_resv_protected(9)
• drm_gpuvm_immediate_mode(9)
• drm_gpuvm_resv(9)
• drm_gpuvm_resv_obj(9)
• drm_gpuvm_is_extobj(9)
• drm_gpuvm_for_each_va_range(9)
• drm_gpuvm_for_each_va_range_safe(9)
• drm_gpuvm_for_each_va(9)
• drm_gpuvm_for_each_va_safe(9)
• struct drm_gpuvm_exec(9)
• drm_gpuvm_exec_unlock(9)
• drm_gpuvm_exec_resv_add_fence(9)
• drm_gpuvm_exec_validate(9)
• struct drm_gpuvm_bo(9)
• drm_gpuvm_bo_get(9)
• drm_gpuvm_bo_gem_evict(9)
• drm_gpuvm_bo_for_each_va(9)
• drm_gpuvm_bo_for_each_va_safe(9)
• enum drm_gpuva_op_type(9)
• struct drm_gpuva_op_map(9)
• struct drm_gpuva_op_unmap(9)
• struct drm_gpuva_op_remap(9)
• struct drm_gpuva_op_prefetch(9)
• struct drm_gpuva_op(9)
• struct drm_gpuva_ops(9)
• drm_gpuva_for_each_op(9)
• drm_gpuva_for_each_op_safe(9)
• drm_gpuva_for_each_op_from_reverse(9)
• drm_gpuva_for_each_op_reverse(9)
• drm_gpuva_first_op(9)
• drm_gpuva_last_op(9)
• drm_gpuva_prev_op(9)
• drm_gpuva_next_op(9)
• struct drm_gpuvm_map_req(9)
• struct drm_gpuvm_ops(9)
• drm_gpuva_op_remap_to_unmap_range(9)

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💀 tiny disclaimer bestie: this is kernel API stuff, so read the actual header before you go poking at it. the flags are real, the vibes are mine. 🎀

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and that's the whole page!! 🌈 source livin' in ./include/drm, dated October 2026 — slay, see you in the next release, mwah 💜🫶✨