1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking Benchmarking Platform
Phoromatic Test Orchestration

A Generic AMP/IPC Framework For Linux

Linux Kernel

Published on 28 June 2011 08:48 AM EDT
Written by Michael Larabel in Linux Kernel
6 Comments

Being proposed by Ohad Ben-Cohen for integration into the mainline Linux kernel is a generic AMP/IPC framework. This a-symmetric multi-processing (AMP) framework with inter-process communication (IPC) integration makes it possible to control remote processors and communicate messages with these remote processors. This work is the primary target of modern SoC devices.

Modern SoC designs have a main SMP application processor that's usually running Linux, but then connected to them are often a-symmetric multi-processing processors, which may be running Linux or a different operating system entirely. These other processors are often for handling a specific task such as multi-media hardware acceleration. With this generic AMP/IPC framework, it's possible to control these remote AMP processors (power on, power off, boot) and to communicate (send/receive) messages to the remote units.

This generic framework introduces rpmsg, which is a VirtIO-based messaging bus for communicating between the Linux kernel and remote processors. The actual drivers of this framework then need to expose the user-space interface. The other part of the equation is remoteproc, which is a generic driver for maintaining the state of remote processors. Hardware differences are abstracted by this driver with the initial support being the OMAP4 Cortex-M3 and the Davinci DSP, from the Panda Board and Hawk Board, respectively.

For those interested in this new framework that could potentially be integrated into the mainline Linux 3.1 kernel, see the kernel mailing list announcement.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux News
  1. Features Added To Mesa 10.6 For Open-Source GPU Drivers
  2. Ubuntu's LXD vs. KVM For The Linux Cloud
  3. Fedora Server 22 Benchmarks With XFS & The Linux 4.0 Kernel
  4. GCC 6 Gets Support For The IBM z13 Mainframe Server
  5. Fedora 22 Is Being Released Next Tuesday
  6. OpenWRT 15.05 Preparing Improved Security & Better Networking
  7. Using The New LLVM/Clang OpenMP Support
  8. Zapcc Claims To Be A "Much Faster C++ Compiler"
  9. Godot 1.1 Engine Release Brings New 2D Engine
  10. Intel VA-API Driver 1.6 Is Coming
Latest Articles & Reviews
  1. Btrfs RAID 0/1 Benchmarks On The Linux 4.1 Kernel
  2. The State Of Various Firefox Features
  3. Intel Iris Graphics Performance With Mesa 10.6
  4. Fedora Workstation 22 Is Looking Great, Running Fantastic
Most Viewed News This Week
  1. The Linux 4.0 Kernel Currently Has An EXT4 Corruption Issue
  2. AMDGPU Open-Source Driver Code Continues Maturing
  3. The Linux 4.0 EXT4 RAID Corruption Bug Has Been Uncovered
  4. Oculus Rift Suspends Linux Development To Focus On Windows
  5. Microsoft Open-Sources The Windows Communication Foundation
  6. Another HTTPS Vulnerability Rattles The Internet
  7. LibreOffice 5.0 Open-Source Office Suite Has Been Branched
  8. Linux 4.1-rc4 Kernel Arrives A Day Late