emulate_sys_reg(9)

💖 emulate_sys_reg(9) 💖

okay so bestie, this page is from the Kernel API Manual, and the function is literally called emulate_sys_reg — it's the one that does guest access emulation for an AArch64 system register. No cap, that's the whole vibe. 🦋

✨ NAME ✨

emulate_sys_reg — emulate a guest access to an AArch64 system register. Periodt. 💅

🎀 SYNOPSIS 🎀

bool emulate_sys_reg (struct kvm_vcpu *vcpu , struct sys_reg_params
       *params );

🌸 ARGUMENTS 🌸

• vcpu — the VCPU pointer. Like, the actual VCPU we're talking about. 👑
• params — decoded system register parameters. Already decoded, bestie, so you don't have to do the decoding yourself. ✨

💫 RETURN 💫

It returns true if the system register access was successful, and false otherwise. That's it, that's the tea. 🍓

🔥 SEE ALSO 🔥

• the kernel file ./arch/arm64/kvm/sys_regs.c — yes, that exact path, go look at it. 📂
• kvm_handle_cp_64(9)
• kvm_handle_cp10_id(9)
• kvm_emulate_cp15_id_reg(9)
• kvm_handle_cp_32(9)
• kvm_reset_sys_regs(9)
• kvm_handle_sys_reg(9)

And that's the whole page, bestie. This one lives in the kernel source over at ./arch/arm64/kvm, dated October 2026, and it's filed under emulate_sys_reg(9). 💜🫶