ne_sanity_c...s_mem_region(9)

💖 ne_sanity_check_phys_mem_region 💖

okay so welcome to the Kernel API Manual, bestie — this is the page for ne_sanity_c...s_mem_region(9) (yes, the header title is literally doing that truncated thing), and the actual function is ne_sanity_check_phys_mem_region. It’s giving “tiny but important sanity check” energy, and we’re gonna cover every single detail. 🫶

🌸 NAME 🌸

ne_sanity_check_phys_mem_region — sanity check the start address and the size of a physical memory region. Literally checking the start address and size of a physical memory region, no cap.

✨ SYNOPSIS ✨

int ne_sanity_check_phys_mem_region (u64 phys_mem_region_paddr , u64
phys_mem_region_size );

🎀 ARGUMENTS 🎀

• phys_mem_region_paddr — physical start address of the region to be sanity checked. The literal start paddr, bestie.
• phys_mem_region_size — length of the region to be sanity checked. The size, the amount, the whole region length.

🦋 CONTEXT 🦋

Process context. This function is called with the ne_enclave mutex held — so yeah, mutex held, that’s the vibe. 💅

🔥 RETURN 🔥

• 0 on success. Slay.
• Negative return value on failure. A negative number means it did not pass the vibe check.

👑 SEE ALSO 👑

Go read these next, iykyk:

• 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_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)

that’s the whole page, bestie 💖 source/version: ./drivers/virt/nitro_enclaves, dated October 2026, hanging out in the Kernel API Manual under ne_sanity_c...s_mem_region(9). mwah 🫶✨