_kvm_vz_save_htimer(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 _kvm_vz_save_htimer(9) 🌸

okay so bestie, welcome to the Kernel API Manual — yes we're literally in the kernel section now, look at us go 💅 this one's about _kvm_vz_save_htimer, and it's giving "put the hardware timer down gently and let software take over" energy. no cap.

✨ NAME ✨

_kvm_vz_save_htimer — switch to software emulation of the guest timer 🕰️✨

🎀 SYNOPSIS 🎀

void _kvm_vz_save_htimer (struct kvm_vcpu *vcpu , u32 *out_compare , u32
*out_cause );

like… that's the whole signature. void return, three args, iconic 💖

🫶 ARGUMENTS 🫶

  • vcpu — the virtual CPU in question 👑 your main character, basically.
  • out_compare — a pointer, and you write the compare value into it 🎯 that's its whole job.
  • out_cause — also a pointer, and the cause value goes in here 🧚 so it can be the cause of… something. placing blame, honestly.

🦋 DESCRIPTION 🦋

so what does it do, you ask? it saves the VZ guest timer state and switches over to software emulation of the guest CP0 timer 🔥 literally handing the reins from hardware to software, and it does it flawlessly.

⚠️ but bestie listen — the hard timer must already be in use, which means preemption should be disabled. don't skip this part, fr fr, it's not a vibe check you wanna fail 💀

🌈 SEE ALSO 🌈

the kernel file lives at ./arch/mips/kvm/vz.c — go read it if you're feeling brave 🫡 and here's the whole friend group of related functions:

all of them are right there in ./arch/mips/kvm, the whole squad ⭐

and that's the page, bestie! brought to you by the fine folks in ./arch/mips/kvm, dated October 2026 — go forth and emulate timers responsibly 💜🎀✨

📦 where this page comes from