DisablePROCHOT | small EFI executable for disabling BD

by arter97 C Version: v1.0 License: No License

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kandi X-RAY | DisablePROCHOT Summary

DisablePROCHOT is a C library. DisablePROCHOT has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A small EFI executable for disabling BD(Bi-directional) PROCHOT upon boot. BD PROCHOT causes CPU to lock on the lowest clock speed, if motherboard deems certain parts are overheated(hence bi-directional). If a thermal sensor on the motherboard is broken, BD PROCHOT can always be tripped. If your motherboard is out of warranty, feel free to use this instead. While modern PC setups are very safe from components overheating so extremely to cause BD PROCHOT(it's mostly for extremely poorly maintained PCs), I still hold no responsibilities from possible damages being caused to your PC.

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Support

DisablePROCHOT has a low active ecosystem.

It has 14 star(s) with 1 fork(s). There are 3 watchers for this library.

It had no major release in the last 12 months.

There are 1 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of DisablePROCHOT is v1.0

Quality

DisablePROCHOT has 0 bugs and 0 code smells.

Security

DisablePROCHOT has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

DisablePROCHOT code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

DisablePROCHOT does not have a standard license declared.

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Without a license, all rights are reserved, and you cannot use the library in your applications.

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DisablePROCHOT releases are available to install and integrate.

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DisablePROCHOT Key Features

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DisablePROCHOT Examples and Code Snippets

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Community Discussions

Trending Discussions on DisablePROCHOT

How to make changes to msr 0x199 from EFI stick?

QUESTION

How to make changes to msr 0x199 from EFI stick?

Asked 2019-May-27 at 15:12

I have a macbookpro11,3 without a battery. When battery is removed the firmware throttles the CPU to half speed. In Windows I can override this using Throttlestop to turn off BD PROCHOT and set multiplier to 25. I want to do this from EFI so that boot and updates run at a normal speed.

Based on source for rEFInd which updates 0x3a register I wrote this program but while BD PROCHOT is disabled correctly after booting into Windows the multiplier is not.

...

ANSWER

Answered 2019-May-27 at 15:12

You have to create a loop and change processor affinity each time through the loop. Then you do a wrmsr for each thread (CPU1, CPU2, CPU3, CPU4) each time through the loop. In Windows you use this function.

https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-setthreadaffinitymask

As soon as you boot up, Windows changes the values in MSR 0x199 so seeing what values are in MSR 0x199 after you boot up does not prove anything.

To simplify things, you can do this in SetMultiplier,

low_bits = 0x1900

Source https://stackoverflow.com/questions/56323657

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install DisablePROCHOT

You can download it from GitHub.

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