CXL: Boot To Bash

Overview

CXL on Linux: Boot To Bash

Device Reference

Overview
Devices Types
UEFI Data

Platform Configuration

Overview
EFI Configuration Process
ACPI Tables
Example Platform Configurations

Linux Kernel Configuration:

Overview
Linux Init (Early Boot)
CXL Driver Operation
DAX Driver Operation
Memory Hotplug

Memory Allocation

DAX Devices
The Page Allocator
Reclaim
Memory Tiering
Huge Pages

Use Cases

Memory Expansion
Dynamic Capacity
Virtual Machines
Shared Memory

CXL: Boot To Bash

The Page Allocator
Edit on GitHub

The Page Allocator

todo: overall behavior

Memory Zones

todo

NUMA Nodes

todo

Memory Policy (mempolicy)

todo

CGroups and CPUSets

todo

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© Copyright 2025, Gregory Price.

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