ne_check_cpu_in_cpu_pool(9)

💅 ne_check_cpu_in_cpu_pool(9) — like, the Kernel API Manual page, bestie ✨

Okay so this is from the ne_check_cpu_in_cpu_pool(9) section of the Kernel API Manual, and no cap, it's a whole vibe check for vCPUs. Sit down, grab a 🍓, we're doing this.

---

🦋 NAME

ne_check_cpu_in_cpu_pool — literally just checks if the given vCPU is in the available CPUs from the pool. That's it. That's the whole job. Iconic minimalism, honestly.

---

🌸 SYNOPSIS

int ne_check_cpu_in_cpu_pool (struct ne_enclave *ne_enclave , u32
vcpu_id );

---

🎀 ARGUMENTS

• ne_enclave — the private data associated with the current enclave. Like, its whole lil inner world 🫶
• vcpu_id — the ID of the vCPU you wanna check if it's available in the NE CPU pool. The main character we're asking about 👑

---

⭐ CONTEXT

Process context, bestie. And important: this function is called with the ne_enclave mutex held. So like… don't come for it without the lock, fr fr. 🔒

---

🔥 RETURN

• 0 on success 💖
• Negative return value on failure 😭

---

🌈 SEE ALSO

Okay this list is LONG, so buckle up, we're going on a tour:

• 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_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_set_user_memory_region_ioctl(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)

Go read them all, iykyk 💀✨

---

And that's the page, bestie! This lil masterpiece lives in ./drivers/virt/nitro_enclaves, dated October 2026 — so like, future vibes only. Mwah 💋🫶