uma/carveout_options(9)

💅 uma/carveout_options 💅

okay bestie, welcome to the Kernel API Manual, section 9 — pull up a chair, this one's short but lowkey cute 🎀

✨ uma/carveout_options ✨

so this is a read-only file, right? you literally cannot write to it, do not even try 🙈 — what it does do is list out, like, every single UMA allocation option that's available, plus the index number that goes with each one. it's giving menu at a boba shop 🧋

here's what the output looks like irl:

$ cat uma/carveout_options
0: Minimum (512 MB)
1:  (1 GB)
2:  (2 GB)
3:  (4 GB)
4:  (6 GB)
5:  (8 GB)
6:  (12 GB)
7: Medium (16 GB)
8:  (24 GB)
9: High (32 GB)

yes bestie, some of those labels are just blank with a size in parens — that's not me skipping anything, that's literally what it prints 💀 the way the names only show up on 0, 7, and 9... iconic. Minimum, Medium, High are the main characters and the rest are just the supporting cast, iykyk.

🌈 SEE ALSO 🌈

the kernel file that lives at ./drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, plus this whole friend group of man pages — go say hi to all of them 🫶:

• pcie_replay_count(9)
• board_info(9)
• uma/carveout(9)
• amdgpu_device_supports_px(9)
• amdgpu_device_supports_boco(9)
• amdgpu_device_supports_baco(9)
• amdgpu_device_supports_smart_shift(9)
• amdgpu_device_mm_access(9)
• amdgpu_device_aper_access(9)
• amdgpu_device_vram_access(9)
• amdgpu_device_get_rev_id(9)
• amdgpu_device_asic_init(9)
• amdgpu_device_mem_scratch_init(9)
• amdgpu_device_mem_scratch_fini(9)
• amdgpu_device_program_register_sequence(9)
• amdgpu_device_pci_config_reset(9)
• amdgpu_device_pci_reset(9)
• amdgpu_device_resize_fb_bar(9)
• amdgpu_device_need_post(9)
• amdgpu_device_should_use_aspm(9)
• amdgpu_device_vga_set_decode(9)
• amdgpu_device_check_block_size(9)
• amdgpu_device_check_vm_size(9)
• amdgpu_device_check_arguments(9)
• amdgpu_switcheroo_set_state(9)
• amdgpu_switcheroo_can_switch(9)
• amdgpu_device_enable_virtual_display(9)
• amdgpu_device_parse_gpu_info_fw(9)
• amdgpu_device_ip_early_init(9)
• amdgpu_device_ip_init(9)
• amdgpu_device_fill_reset_magic(9)
• amdgpu_device_check_vram_lost(9)
• amdgpu_device_set_cg_state(9)
• amdgpu_device_ip_late_init(9)
• amdgpu_device_smu_fini_early(9)
• amdgpu_device_ip_fini(9)
• amdgpu_device_delayed_init_work_handler(9)
• amdgpu_device_ip_suspend_phase1(9)
• amdgpu_device_ip_suspend_phase2(9)
• amdgpu_device_ip_suspend(9)
• amdgpu_device_ip_resume_phase1(9)
• amdgpu_device_ip_resume_phase2(9)
• amdgpu_device_ip_resume_phase3(9)
• amdgpu_device_ip_resume(9)
• amdgpu_device_detect_sriov_bios(9)
• amdgpu_device_asic_has_dc_support(9)
• amdgpu_device_has_dc_support(9)
• amdgpu_device_check_iommu_direct_map(9)
• amdgpu_device_check_iommu_remap(9)
• amdgpu_device_init(9)
• amdgpu_device_fini_hw(9)
• amdgpu_device_evict_resources(9)
• amdgpu_device_pm_notifier(9)
• amdgpu_device_prepare(9)
• amdgpu_device_complete(9)
• amdgpu_device_suspend(9)
• amdgpu_device_resume(9)
• amdgpu_device_reset_sriov(9)
• amdgpu_device_has_job_running(9)
• amdgpu_device_should_recover_gpu(9)
• amdgpu_device_gpu_recover(9)
• amdgpu_device_partner_bandwidth(9)
• amdgpu_device_gpu_bandwidth(9)
• amdgpu_device_get_pcie_info(9)
• amdgpu_device_is_peer_accessible(9)
• amdgpu_pci_error_detected(9)
• amdgpu_pci_mmio_enabled(9)
• amdgpu_pci_slot_reset(9)
• amdgpu_pci_resume(9)
• amdgpu_device_halt(9)
• amdgpu_device_get_gang(9)
• amdgpu_device_switch_gang(9)
• amdgpu_device_enforce_isolation(9)

that's the whole thing, no cap — short page, big list, zero lore 💜

signed, sealed, delivered with love from ./drivers/gpu/drm/amd/amdgpu — October 2026 edition, page uma/carveout_options(9) ✨ mwah ✨