NE_ERR_VCPU_NOT_IN_CPU_POOL(9)

💅 NE_ERR_VCPU_NOT_IN_CPU_POOL(9) — the Kernel API Manual moment ✨

okay so bestie, welcome to the NE_ERR_VCPU_NOT_IN_CPU_POOL(9) page, part of the Kernel API Manual fam 🫶 this is the one about Nitro Enclaves (NE), and she's a whole vibe. grab a strawberry drink 🍓 and let's get into it.

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🌸 NAME 🌸

NE_ERR_VCPU_NOT_IN_CPU_POOL — literally the error for when the vCPU you handed over is not available in the NE CPU pool. that's the tea 💅 it's giving "girl, that core isn't in the group chat."

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✨ SYNOPSIS ✨

NE_ERR_VCPU_NOT_IN_CPU_POOL

that's it, that's the whole synopsis — she's a single line and she ATE 🔥 no arguments, no flags, just the name and main character energy 👑

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🦋 SEE ALSO 🌈

okay this is the long part and yes we're keeping every single one of them, no skipping, periodt 💖 start off with the header file itself:

• Kernel file ./include/uapi/linux/nitro_enclaves.h

and then the whole iconique lineup of related pages, in order, exactly as the original lists them:

• Nitro Enclaves (NE) Kernel Driver Interface(9)
• NE_CREATE_VM(9)
• NE_ADD_VCPU(9)
• NE_GET_IMAGE_LOAD_INFO(9)
• NE_SET_USER_MEMORY_REGION(9)
• NE_START_ENCLAVE(9)
• NE specific error codes(9)
• NE_ERR_VCPU_ALREADY_USED(9)
• NE_ERR_VCPU_INVALID_CPU_CORE(9)
• NE_ERR_INVALID_MEM_REGION_SIZE(9)
• NE_ERR_INVALID_MEM_REGION_ADDR(9)
• NE_ERR_UNALIGNED_MEM_REGION_ADDR(9)
• NE_ERR_MEM_REGION_ALREADY_USED(9)
• NE_ERR_MEM_NOT_HUGE_PAGE(9)
• NE_ERR_MEM_DIFFERENT_NUMA_NODE(9)
• NE_ERR_MEM_MAX_REGIONS(9)
• NE_ERR_NO_MEM_REGIONS_ADDED(9)
• NE_ERR_NO_VCPUS_ADDED(9)
• NE_ERR_ENCLAVE_MEM_MIN_SIZE(9)
• NE_ERR_FULL_CORES_NOT_USED(9)
• NE_ERR_NOT_IN_INIT_STATE(9)
• NE_ERR_INVALID_VCPU(9)
• NE_ERR_NO_CPUS_AVAIL_IN_POOL(9)
• NE_ERR_INVALID_PAGE_SIZE(9)
• NE_ERR_INVALID_FLAG_VALUE(9)
• NE_ERR_INVALID_ENCLAVE_CID(9)
• Image load info flags(9)
• NE_EIF_IMAGE(9)
• struct ne_image_load_info(9)
• User memory region flags(9)
• NE_DEFAULT_MEMORY_REGION(9)
• struct ne_user_memory_region(9)
• Enclave start info flags(9)
• NE_ENCLAVE_PRODUCTION_MODE(9)
• NE_ENCLAVE_DEBUG_MODE(9)
• struct ne_enclave_start_info(9)

like, that's the whole friend group and every one of them is invited to the function 🎀 iykyk.

ngl reading all of these is lowkey a lot, but each one is its own lil page and honestly? iconic. go read them, bestie, they're all in section 9 with this one 💜

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and that's the page, bestie! no cap, you now know exactly what NE_ERR_VCPU_NOT_IN_CPU_POOL(9) is about 🧚‍♀️

signing off from ./include/uapi/linux 💖 dated October 2026 ✨ and the page name is NE_ERR_VCPU_NOT_IN_CPU_POOL(9) in case you forgot — slay 🌟