__remove_memory(9)

💖 NAME 💖

Okay bestie, meet __remove_memory(9) from the Kernel API Manual — its whole mission is: remove memory if every memory block is offline. That's the vibe. No cap. 💅

✨ SYNOPSIS ✨

void __remove_memory (u64 start , u64 size );

🫶 ARGUMENTS 🫶

• start — physical address of the region to remove. Like, where the memory situation starts. 📍
• size — size of the region to remove. The amount of memory we're talking about, bestie. 📏

⚠️ NOTE ⚠️

Before this call, the caller must call lock_device_hotplug so that hotplug and online/offline operations are serialized. This is required by try_offline_node, so don't skip it — it's giving "mandatory pre-game ritual." 🚨

Real talk: that serialization requirement is not decorative; it's literally required by try_offline_node.

👀 SEE ALSO 👀

Kernel file ./mm/memory_hotplug.c, plus these besties:

• __remove_pages(9)
• __add_memory_driver_managed(9)
• add_memory_driver_managed(9)
• try_offline_node(9)
• offline_and_remove_memory_ranges(9)

From ./mm, the October 2026 version/date drop, page __remove_memory(9) — bye bestie, hydrate and serialize your hotplug ops! 💖✨