kvm_handle_cp_32(9)

✨ kvm_handle_cp_32(9) ✨

okay so bestie, welcome to kvm_handle_cp_32(9) 💅 this is a page from the Kernel API Manual and it's basically the little handler that deals with a mrc/mcr trap on a guest CP14/CP15 access 🎀 like, the guest went poking at coprocessor registers, and this function is the one who answers the door 😭✨

🌸 SYNOPSIS 🌸

int kvm_handle_cp_32 (struct kvm_vcpu *vcpu , struct sys_reg_params
*params , const struct sys_reg_desc *global , size_t nr_global );

that's the whole signature, no cap — int coming back, four args going in 🫶

💖 ARGUMENTS 💖

• vcpu — The VCPU pointer 👑 like, the actual virtual CPU we're doing all this for.
• params — a struct sys_reg_params 🦋 the details of the access, packaged up cute.
• global — a struct sys_reg_desc ⭐ the descriptor situation.
• nr_global — size of the global array 🌈 literally just how many entries global has, iykyk.

🎀 SEE ALSO 🎀

• Kernel file ./arch/arm64/kvm/sys_regs.c — that's where the magic lives, fr fr 🔥
• kvm_handle_cp_64(9)
• kvm_handle_cp10_id(9)
• kvm_emulate_cp15_id_reg(9)
• emulate_sys_reg(9)
• kvm_reset_sys_regs(9)
• kvm_handle_sys_reg(9)

all the sibling functions, the whole friend group honestly 💜

and that's the page!! mwah 💋 this one's sourced from ./arch/arm64/kvm, dated October 2026 — iconic, no notes, periodt 🧚‍♀️💫