kvm_mips_set_count_hz(9)

🌸 NAME 🌸

This is kvm_mips_set_count_hz(9) — yes, the whole mouthful — straight from the Kernel API Manual, bestie.

kvm_mips_set_count_hz — update the frequency of the timer. Slay.

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✨ SYNOPSIS ✨

Okay so the signature is literally:

int kvm_mips_set_count_hz (struct kvm_vcpu *vcpu , s64 count_hz );

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🎀 ARGUMENTS 🎀

• vcpu — virtual CPU. The main character of this call, honestly.
• count_hz — frequency of the CP0_Count timer in Hz. The number that makes the timer go brrr.

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💖 DESCRIPTION 💖

Change the frequency of the CP0_Count timer.

This is done atomically, so that CP0_Count is continuous and no timer interrupt is lost. The way it keeps everything smooth is lowkey iconic ✨.

no cap: atomic here is the whole vibe — continuous CP0_Count, zero lost timer interrupts. 🫶

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🔥 RETURN 🔥

• -EINVAL if count_hz is out of range.
• 0 on success. Periodt. 💅

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🦋 SEE ALSO 🦋

Kernel file ./arch/mips/kvm/emulate.c

• kvm_get_badinstr(9)
• kvm_get_badinstrp(9)
• kvm_mips_count_disabled(9)
• kvm_mips_ktime_to_count(9)
• kvm_mips_count_time(9)
• kvm_mips_read_count_running(9)
• kvm_mips_read_count(9)
• kvm_mips_freeze_hrtimer(9)
• kvm_mips_resume_hrtimer(9)
• kvm_mips_restore_hrtimer(9)
• kvm_mips_write_count(9)
• kvm_mips_init_count(9)
• kvm_mips_write_compare(9)
• kvm_mips_count_disable(9)
• kvm_mips_count_disable_cause(9)
• kvm_mips_count_enable_cause(9)
• kvm_mips_set_count_ctl(9)
• kvm_mips_set_count_resume(9)
• kvm_mips_count_timeout(9)

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🧚 cute little sign-off: this page is from ./arch/mips/kvm, dated October 2026, and it lives in the Kernel API Manual as kvm_mips_set_count_hz(9) — byeeeeee 🫶💜