As most of the existing crates require kernel-mode, this provides a Rust-friendly interface for reading and writing to MSRs while in user-space. This does require the msr kernel module to be loaded.

Currently this crate only supports Linux.

msru

msru provides a Rust-friendly interface for x86_64 CPU MSRs (Model Specific Registers). It allows you to read and write to MSRs via a specified CPU msr device file (/dev/cpu/{cpu_number}/msr).

Installation

Add the following line to your Cargo.toml file:

[dependencies]
msru = "0.2.0"

Usage

use msru::Msr;

// X86_64 SYSCFG MSR
let msr: Msr = Msr::new(0xC0010010, 0)?;

let raw_value: u64 = msr.read()?;

// ...