ne_set_user...region_ioctl(9)

✨ ne_set_user_memory_region_ioctl(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 this one's about ne_set_user_memory_region_ioctl — yes that's a mouthful, i know, but it's fine, we're gonna get through it together 🫶

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🌸 NAME 🌸

ne_set_user_memory_region_ioctl — literally just adds a user space memory region to the slot that's associated with the current enclave. that's it. that's the whole vibe 🎀

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🦋 SYNOPSIS 🦋

int ne_set_user_memory_region_ioctl (struct ne_enclave *ne_enclave ,
struct ne_user_memory_region mem_region );

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💖 ARGUMENTS 💖

• ne_enclave — the private data that's associated with the current enclave. yep, the enclave's personal little diary 🎀
• mem_region — the user space memory region that's gonna get associated with the given slot. it's giving "put this here" energy ✨

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🧚 CONTEXT 🧚

Process context, bestie. and listen — this function is called with the ne_enclave mutex held 🔒 like, held held. no cap. so don't go doing anything weird in there 💀

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👑 RETURN 👑

• 0 on success. slay 💅
• Negative return value on failure. not slay 😭

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/virt/nitro_enclaves/ne_misc_dev.c — Enclave lifetime management driver for Nitro Enclaves (NE).(9)
• NE_CPUS_SIZE(9)
• NE_EIF_LOAD_OFFSET(9)
• NE_MIN_ENCLAVE_MEM_SIZE(9)
• NE_MIN_MEM_REGION_SIZE(9)
• NE_PARENT_VM_CID(9)
• struct ne_cpu_pool(9)
• struct ne_phys_contig_mem_regions(9)
• ne_check_enclaves_created(9)
• ne_setup_cpu_pool(9)
• ne_teardown_cpu_pool(9)
• ne_set_kernel_param(9)
• ne_donated_cpu(9)
• ne_get_unused_core_from_cpu_pool(9)
• ne_set_enclave_threads_per_core(9)
• ne_get_cpu_from_cpu_pool(9)
• ne_get_vcpu_core_from_cpu_pool(9)
• ne_check_cpu_in_cpu_pool(9)
• ne_add_vcpu_ioctl(9)
• ne_sanity_check_user_mem_region(9)
• ne_sanity_check_user_mem_region_page(9)
• ne_sanity_check_phys_mem_region(9)
• ne_merge_phys_contig_memory_regions(9)
• ne_start_enclave_ioctl(9)
• ne_enclave_ioctl(9)
• ne_enclave_remove_all_mem_region_entries(9)
• ne_enclave_remove_all_vcpu_id_entries(9)
• ne_pci_dev_remove_enclave_entry(9)
• ne_enclave_release(9)
• ne_enclave_poll(9)
• ne_create_vm_ioctl(9)
• ne_ioctl(9)

like, that's a lot of friends, but every single one of them gets a shoutout 🫶 iykyk.

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lowkey reminder: this page lives under ./drivers/virt/nitro_enclaves, and it's dated October 2026, manual name ne_set_user...region_ioctl(9). that's the whole source/version/date situation, bestie — periodt 💜

go forth and set those memory regions, icon 🧚✨