diff --git a/Cargo.lock b/Cargo.lock
index 4aae386..8dec534 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,79 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "core_affinity"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a034b3a7b624016c6e13f5df875747cc25f884156aad2abd12b6c46797971342"
+dependencies = [
+ "libc",
+ "num_cpus",
+ "winapi",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc0fef456e4baa96da950455cd02c081ca953b141298e41db3fc7e36b1da849c"
+
+[[package]]
+name = "libc"
+version = "0.2.182"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6800badb6cb2082ffd7b6a67e6125bb39f18782f793520caee8cb8846be06112"
+
 [[package]]
 name = "lpmd-rewrite"
 version = "0.1.0"
+dependencies = [
+ "core_affinity",
+ "raw-cpuid",
+]
+
+[[package]]
+name = "num_cpus"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91df4bbde75afed763b708b7eee1e8e7651e02d97f6d5dd763e89367e957b23b"
+dependencies = [
+ "hermit-abi",
+ "libc",
+]
+
+[[package]]
+name = "raw-cpuid"
+version = "10.6.1"
+source = "git+https://github.com/oxidecomputer/rust-cpuid.git#e86d96ba1e63a4c4ecfc521e9fc7a312db0e0c17"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
index 3fcc692..b0bab27 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,5 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+core_affinity = "0.8.3"
+raw-cpuid = { git = "https://github.com/oxidecomputer/rust-cpuid.git", version = "10.6.1" }
diff --git a/src/cpu.rs b/src/cpu.rs
new file mode 100644
index 0000000..f59b207
--- /dev/null
+++ b/src/cpu.rs
@@ -0,0 +1,44 @@
+use std::{
+    collections::HashMap,
+    string,
+    sync::{Arc, Mutex},
+};
+
+use core_affinity::*;
+use std::thread;
+
+pub struct Cpu {
+    pub cores: HashMap<i32, CpuCore>,
+}
+
+struct CpuCore {}
+
+enum CoreType {
+    P, // Performence
+    E, // Efficent
+    L, // Low power
+}
+
+impl Cpu {
+    pub fn new() -> Cpu {
+        let cpu = Arc::new(Mutex::new(Cpu {
+            cores: HashMap::new(),
+        }));
+        let _ = core_ids
+            .into_iter()
+            .map(|id| {
+                thread::spawn(move || {
+                    // Pin this thread to a single CPU core.
+                    let res = core_affinity::set_for_current(id);
+                    if !res {
+                        return;
+                    }
+                })
+            })
+            .collect::<Vec<_>>();
+
+        for handle in handles.into_iter() {
+            handle.join().unwrap();
+        }
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index e1f8699..03e1203 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,8 @@
+use raw_cpuid::*;
+mod cpu;
+
 fn main() {
+    let a = cpuid!(26, 0);
+    println!("{:?}", a);
     println!("Hello, world!");
-    meow
 }