kvm_vcpu_wfi(9)

💖 kvm_vcpu_wfi(9) — from the Kernel API Manual, bestie 💖

🌸 NAME 🌸

kvm_vcpu_wfi — emulate Wait-For-Interrupt behavior. That's the vibe: it's giving “go to sleep until something valid actually happens” for a vCPU. ✨

✨ SYNOPSIS ✨

void kvm_vcpu_wfi (struct kvm_vcpu *vcpu );

🎀 ARGUMENTS 🎀

• vcpu — the VCPU pointer. That's it, that's the argument: a pointer to the VCPU. 🫶

💅 DESCRIPTION 💅

Okay so kvm_vcpu_wfi literally suspends execution of a vCPU until a valid wake event is detected — i.e., until the vCPU is runnable. 🛌✨

Here's the tea ☕: the vCPU may or may not be scheduled out, depending on when a wake event arrives. For example, there may already be a pending wake event. So it's not always a full nap situation — sometimes the wake-up is already waiting. 😭💖

🦋 SEE ALSO 🦋

Go peek at these besties if you want the full lore 👀💜:

• Kernel file: ./arch/arm64/kvm/arm.c 🗂️
• kvm_arch_init_vm(9)
• kvm_arch_destroy_vm(9)
• kvm_arch_vcpu_runnable(9)
• check_vcpu_requests(9)
• kvm_vcpu_exit_request(9)
• kvm_arch_vcpu_ioctl_run(9)

mwah 💋 this page is serving source/version ./arch/arm64/kvm, dated October 2026, and yes bestie, it's kvm_vcpu_wfi(9) — periodt. 🎀💖