pmd_free_pte_page(9)

🎀 pmd_free_pte_page(9) 🎀

okay so bestie, this page is from the Kernel API Manual, and it’s giving “clean up this page-table situation” energy. let’s get into it 💅

✨ NAME ✨

pmd_free_pte_page — clear the PMD entry and free the PTE page. literally what it says on the tin, no cap.

🦋 SYNOPSIS 🦋

int pmd_free_pte_page (pmd_t *pmd , unsigned long addr );

💅 ARGUMENTS 💅

• pmd — pointer to the PMD. yes, the actual pmd_t *, bestie 🫶
• addr — virtual address associated with PMD.

🌸 CONTEXT 🌸

context check, queen: the PMD range has been unmapped and the TLB purged. that’s the whole vibe going in ✨

🎀 RETURN 🎀

1 if clearing the entry succeeded, 0 otherwise. that’s it, that’s the return value 💖

🔥 SEE ALSO 🔥

Kernel file ./arch/x86/mm/pgtable.c

• reserve_top_address(9)
• p4d_set_huge(9)
• p4d_clear_huge(9)
• pud_set_huge(9)
• pmd_set_huge(9)
• pud_clear_huge(9)
• pmd_clear_huge(9)

xoxo, your kernel bestie 💜 — source/version: ./arch/x86/mm, date: October 2026 🌈