ips_cpu_lower(9)

✨ ips_cpu_lower(9) ✨

okay so bestie, welcome to the Kernel API Manual, section 9 — this is ips_cpu_lower, and it's giving "quietly lower the vibe of your CPU's power clamp" 💅

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💖 NAME 💖

ips_cpu_lower — lower the CPU power clamp 🫶

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🌸 SYNOPSIS 🌸

void ips_cpu_lower (struct ips_driver *ips );

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🎀 ARGUMENTS 🎀

• ips — the IPS driver struct. that's it, that's the whole arg list, she's low maintenance 💅

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🦋 DESCRIPTION 🦋

so the actual job here: lower the CPU power clamp b IPS_CPU_STEP if possible. (yes the manpage literally says "b" — we don't fix it, we respect the source text, IPS_CPU_STEP stays exactly as written 🙈💀)

how do we do it? we adjust the TURBO_POWER_CURRENT_LIMIT MSR down, going as low as the platform limits will allow. and yeah, technically we could go lower than that — but ngl there wouldn't be much point, so we don't ✨

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👑 SEE ALSO 👑

• Kernel file ./drivers/platform/x86/intel_ips.c 🔥
• ips_cpu_busy(9)
• ips_cpu_raise(9)
• do_enable_cpu_turbo(9)
• ips_enable_cpu_turbo(9)
• do_disable_cpu_turbo(9)
• ips_disable_cpu_turbo(9)
• ips_gpu_busy(9)
• ips_gpu_raise(9)
• ips_gpu_lower(9)
• ips_enable_gpu_turbo(9)
• ips_disable_gpu_turbo(9)
• mcp_exceeded(9)
• cpu_exceeded(9)
• mch_exceeded(9)
• verify_limits(9)
• update_turbo_limits(9)
• ips_adjust(9)
• ips_monitor(9)
• ips_irq_handler(9)
• ips_detect_cpu(9)
• ips_get_i915_syms(9)

like, the whole intel_ips.c friend group, fr fr — go read them all, they all ate 💜

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reminder bestie: this page lives in ./drivers/platform/x86, and it's dated October 2026. iykyk 💖

and that's the whole page, no cap. stay iconic, go lower that clamp, and remember — platform limits said what they said 🧚🌈⭐