ne_alloc_user_mem_region(9)

💅 ne_alloc_user_mem_region(9) — the Kernel API Manual glow-up ✨

okay bestie, so this is a page straight out of the Kernel API Manual (yes that one, the kernel one 😭) and it's about ne_alloc_user_mem_region — the lil function whose whole job is handing an enclave a chunk of user space memory. it's giving "allocator but make it Nitro Enclaves" and honestly? iconic. let's get into it 🫶

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✨ NAME ✨

ne_alloc_user_mem_region — allocate a user space memory region for an enclave. that's it. that's the whole vibe check. one (1) job, done slayfully 💖

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🌸 SYNOPSIS 🌸

int ne_alloc_user_mem_region (struct ne_user_mem_region
*ne_user_mem_region );

so it returns an int, it takes one pointer to a struct ne_user_mem_region, and that's the entire cast of characters. main character energy fr fr 👑

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🎀 ARGUMENTS 🎀

• ne_user_mem_region — a user space memory region that was allocated using hugetlbfs. like, that's where it comes from, bestie. hugetlbfs. no cap, that's the spec 💅

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🦋 CONTEXT 🦋

Process context. that's the whole section. process context. respect it 🙈

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🌈 RETURN 🌈

• 0 on success — we love a zero, the good zero, the "you ate" zero ⭐
• Negative return value on failure — not the slay outcome, but she's honest about it 😭

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💜 SEE ALSO 💜

like a group chat with a LOT of members, and every single one gets to be named here (iykyk):

• Kernel file ./samples/nitro_enclaves/ne_ioctl_sample.c — the sample flow of using the ioctl interface provided by the Nitro Enclaves (NE)(9). literally the demo, go read it 🍓
• NE_DEV_NAME(9)
• NE_POLL_WAIT_TIME(9)
• NE_POLL_WAIT_TIME_MS(9)
• NE_SLEEP_TIME(9)
• NE_DEFAULT_NR_VCPUS(9)
• NE_MIN_MEM_REGION_SIZE(9)
• NE_DEFAULT_NR_MEM_REGIONS(9)
• NE_IMAGE_LOAD_HEARTBEAT_CID(9)
• NE_IMAGE_LOAD_HEARTBEAT_PORT(9)
• NE_IMAGE_LOAD_HEARTBEAT_VALUE(9)
• struct ne_user_mem_region(9)
• ne_create_vm(9)
• ne_poll_enclave_fd(9)
• ne_load_enclave_image(9)
• ne_set_user_mem_region(9)
• ne_free_mem_regions(9)
• ne_add_vcpu(9)
• ne_start_enclave(9)
• ne_start_enclave_check_booted(9)

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ok that's the entire page, no crumbs left behind, every flag and reference accounted for 💀✨

and finally, the cute lil sign-off so you know where this treasure came from: this one lives at ./samples/nitro_enclaves, dated October 2026, and yes she's still ne_alloc_user_mem_region(9) — go off, queen 👑💖🧚