https://github.com/batmac/wbinvd

A trivial Linux kernel module to execute WBINVD on demand
https://github.com/batmac/wbinvd

Last synced: 10 months ago
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A trivial Linux kernel module to execute WBINVD on demand

• Host: GitHub
• URL: https://github.com/batmac/wbinvd
• Owner: batmac
• License: gpl-2.0
• Created: 2018-01-30T00:26:56.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2023-12-15T02:59:32.000Z (over 2 years ago)
• Last Synced: 2025-08-28T17:10:05.179Z (10 months ago)
• Language: C
• Size: 16.6 KB
• Stars: 25
• Watchers: 3
• Forks: 6
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# A trivial Linux kernel module to execute WBINVD on demand (`cat /proc/wbinvd`)

[![Build Status](https://travis-ci.org/batmac/wbinvd.svg?branch=master)](https://travis-ci.org/batmac/wbinvd)

WBINVD (Write Back and INValidate Cache) is a (ring 0 only) x86 instruction to asynchronously purge the cache (with write-back, so it is safe to execute)

more info about WBINVD: http://www.felixcloutier.com/x86/WBINVD.html

```sh

make && make test

```

one can use dkms to create a .deb, for instance:

```sh

make install-bdep

apt-get install dkms

cp -a  /usr/src/wbinvd-1.0

rm -rf /usr/src/wbinvd-1.0/.git

dkms add wbinvd/1.0

make deb # or dkms mkdeb wbinvd/1.0 --source-only

```