sgx_encl_te..._clear_young(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sgx_encl_test_and_clear_young — a Kernel API Manual moment (section 9, bestie)

okay so this is sgx_encl_test_and_clear_young(9) from the Kernel API Manual, and honestly? she's a little function with one job and she does it. no notes. ✨

✨ NAME ✨

sgx_encl_test_and_clear_young — literally just, like, test the accessed bit and then reset it. that's the whole vibe check. 🫶

🌸 SYNOPSIS 🌸

int sgx_encl_test_and_clear_young (struct mm_struct *mm , struct
       sgx_encl_page *page );

like yes she takes two args and returns an int, we been knew 💅

🎀 ARGUMENTS 🎀

  • mm — the mm_struct that gets checked. she's the one being looked at, ok? eyes on her 👀
  • page — the enclave page that's getting tested for recent access. is she fresh or is she not, that's the question 🦋

🌈 DESCRIPTION 🌈

so what she does is: she checks the Access (A) bit from the PTE that corresponds to the enclave page — and then she clears it. yes, both. check it, then clear it. iconic behaviour honestly. not me reading the bit and then immediately wiping it 😭 that's just her process.

⭐ RETURN ⭐

  • 1 → the page has been recently accessed (she was there, she was seen, main character energy 👑)
  • 0 → not recently accessed. it's giving untouched. it's giving neglected. 💀

🔥 SEE ALSO 🔥

the kernel file herself: ./arch/x86/kernel/cpu/sgx/encl.c

and the whole friend group, fr fr — go say hi to all of them:

lowkey if you're reading this whole list you're a real one. iykyk 🧚

💜 bye bestie 💜

that's the page!! it lives in ./arch/x86/kernel/cpu/sgx, it's dated October 2026, and yes the version tag is literally sgx_encl_te..._clear_young(9) because even manpage footers get to be a little mysterious. slay, go forth and test-and-clear, periodt 🍓✨

📦 where this page comes from