crdte(9)

💅 crdte(9) — Compare and Replace DAT Table Entry ✨

okay so bestie, welcome to the Kernel API Manual entry for crdte(9) 💖. This function is literally named Compare and Replace DAT Table Entry, and it's giving low-level kernel table realness. We're covering every arg, the return value, and the SEE ALSOs, no cap 🫶.

🌸 NAME 🌸

crdte — Compare and Replace DAT Table Entry 🎀

✨ SYNOPSIS ✨

bool crdte (unsigned long old , unsigned long new , unsigned long *table
       , unsigned long dtt , unsigned long address , unsigned long asce );

🫶 ARGUMENTS 🫶

• old — the expected old value 👀
• new — the new value, fresh out the group chat ✨
• table — pointer to the value to be exchanged 🌀
• dtt — table type of the table to be exchanged 🧚
• address — the address mapped by the entry to be replaced 📍
• asce — the ASCE of this entry 💅

🦋 RETURN 🦋

It returns true if the compare and replace was successful, otherwise false 😭. That's the whole vibe check.

🌈 SEE ALSO 🌈

• Kernel file ./arch/s390/include/asm/pgtable.h — the source-file bestie 🫶
• cspg(9) — another manual page to peek at 👑

bestie note: every literal in here is doing main character work — crdte, old, new, table, dtt, address, asce, true, false, and that path stay exactly as written 💖

— xoxo, your crdte(9) bestie from ./arch/s390/include/asm, October 2026 edition 💖✨