GSOC2011 project RTEMS HyperVisor

Gedare Bloom gedare at
Sun Mar 20 15:34:03 UTC 2011

I am concerned with this project. The lack of support for MMU in RTEMS
means that memory protection is not available within the kernel, so it
will be hard to implement a proper hypervisor.

2011/3/20 张文杰 <157724595 at>:
> Sorry for forgetting add the reference link.
> [1].
> [2].
> [3].
> [4].
> At 2011-03-20 21:50:39,"张文杰" <157724595 at> wrote:
> Hi, all:
> I am a student who is preparing for participating the GSOC2011 RTEMS. My
> interested project is RTEMS HyperVisor [1]. This
> project 's ultimate goal is to make RTEMS support to run multiple operating
> systems(like Linux or uclinux) and meantime RTEMS can be
> adapted to fullfill the requirements defined in the ARINC 653 standard. So
> the project is divided into two milestone tasks: 1) add a HyperVisor to
> RTEMS. the design of HyperVisor is compatible with ARINC 653 standard. 2).
> implement ARINC 653 interface in
> RTEMS which can reference the a ESA project named AIR[2].
> Hypervisor, also called virtual machine monitor (VMM), is one of
> virtualization techniques which allow multiple operating systems.
> For embedded systems it must have real-time capability. And there is also a
> challenge to the resource-constrained embedded
> systems, because support for virtualization requires memory protection (in
> the form of a memory management unit or at least a
> memory protection unit) and a distinction between user mode and privileged
> mode, which rules out many microcontrollers. About the implement of
> HyperVisor for RTEMS there are two projects we can reference. First is
> project XtratuM [3] which is a small
> native (bare-metal) hypervisor, now the RTEMS has been ported to XtratuM run
> as a guest OS and its design use ARINC 653 as
> a reference although ARINC-653 is not directly applicable to the hypervisor
> systems. Another project is HelenOS operating
> system [4] which is designed as a relatively small microkernel assisted with
> a set of userspace drivers and server tasks, Its kernel
> is a good reference candidate for the design of Hypervisor.
> This is just my initial thoughts, if there is any inappropriate please point
> out. Do not hesitate to add your comments.
> Wenjie Zhang
> Best Regards
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