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2023-12-01 - 02:19

Dates and Events:

OSADL Articles:

2023-11-12 12:00

Open Source License Obligations Checklists even better now

Import the checklists to other tools, create context diffs and merged lists


2023-03-01 12:00

Embedded Linux distributions

Results of the online "wish list"


2022-01-13 12:00

Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completed

Another important milestone on the way to interoperable Open Source real-time Ethernet has been reached


2021-02-09 12:00

Open Source OPC UA PubSub over TSN project phase #3 launched

Letter of Intent with call for participation is now available



Real Time Linux Workshops

1999 - 2000 - 2001 - 2002 - 2003 - 2004 - 2005 - 2006 - 2007 - 2008 - 2009 - 2010 - 2011 - 2012 - 2013 - 2014 - 2015

14th Real Time Linux Workshop, October 18 to 20, 2012 at the Department of Computer Science, University of North Carolina at Chapel Hill

Announcement - Call for papers (ASCII) - Hotels - Directions - Agenda - Paper Abstracts - Presentations - Registration - Abstract Submission - Sponsors - Gallery

Linux porting to the XtratuM Hypervisor for x86 processors

Jordi Sánchez, Instituto de Automatica e Informatica Industrial, Universidad Politecnica de Valencia, Spain
Salva Peiró, Instituto de Automatica e Informatica Industrial, Universidad Politecnica de Valencia, Spain
Miguel Masmano, Instituto de Automatica e Informatica Industrial, Universidad Politecnica de Valencia, Spain
José Simó, Instituto de Automatica e Informatica Industrial, Universidad Politecnica de Valencia, Spain
Patricia Balbastre, Instituto de Automatica e Informatica Industrial, Universidad Politecnica de Valencia, Spain

Partitioned software architectures represent the future of secure systems. They have evolved to fulfill security and avionics requirements where predictability is extremely important. The idea behind a partitioned system is the virtualization. A virtual machine (VM) is a software implementation of a machine that executes programs like a real machine. A Hypervisor is a layer of software that enables to run several independent execution environments or partitions in a single computer.

There exists several virtualization solutions targeting specific application needs ranging from general purpose virtualization to embedded systems virtualization, one of them is the XtratuM  hypervisor. XtratuM is an open  source hypervisor specially designed for real-time embedded systems. It provides a framework to run several operating systems in a robust partitioned environment ensuring strong temporal and spatial isolation properties.

In this paper we present the porting of the Linux general purpose operating system (GPOS) to be run on top of the XtratuM hypervisor. The paper discusses in detail the challenges that have been overcome to run Linux as a XtratuM partition, focusing on solving the memory and device management and initialization process issues that appear when running Linux GPOS under the strong isolation provided by the XtratuM Hypervisor. This development enables XtratuM to be used in a large variety of fields and widens the scope of application of this hypervisor to more generic systems with softer real-time constraints.