kvm_cma_reserve(9)

okay so bestie, welcome to the kvm_cma_reserve(9) page from the Kernel API Manual ✨ it's short, it's specific, and it's giving “tiny function, important timing” energy 🎀

🌸 NAME 🌸

kvm_cma_reserve — reserve area for kvm hash pagetable 💅

⭐ SYNOPSIS ⭐

void kvm_cma_reserve (void );

🫶 ARGUMENTS 🫶

• void — no arguments, bestie. none. zero. the void is voiding 🕳️✨

💖 DESCRIPTION 💖

okay so this function reserves memory from the early allocator 🧚 it's literally doing its little memory-reservation moment early in the game.

it should be called by arch specific code once the memblock allocator has been activated and all other subsystems have already allocated/reserved memory 👑 timing is everything, no cap.

fr fr: call it at the right point — after memblock is active and after the other subsystems have done their allocate/reserve thing 🫡

🔥 SEE ALSO 🔥

• Kernel file ./arch/powerpc/kvm/book3s_hv_builtin.c 👀

mwah 💋 source/version: ./arch/powerpc/kvm, dated October 2026, page kvm_cma_reserve(9) — byeee, slay responsibly 🦋💜