java control of xen

java control of xen

[Adam Heath]

In an effort to push xen into more parts of the computing world, I am
announcing the start of a brand new project here at Brainfood.

Our plans are to port Xen to run *inside* a JVM(Kaffe), so that we can make
use of the write-one-run-anywhere mantra.  The magic piece of code that will
enable this is Mips2Java.

Unfortunately, at this time, Xen does not yet run on mips.  So, we are looking
for volunteers to port Xen to mips, so that then we can have Xen run under
Kaffe, which will then let us run it on the final platform, mobile phones.

Re: java control of xen

[Jim Pick]

Adam Heath wrote:
> In an effort to push xen into more parts of the computing world, I am
> announcing the start of a brand new project here at Brainfood.
> 
> Our plans are to port Xen to run *inside* a JVM(Kaffe), so that we can make
> use of the write-one-run-anywhere mantra.  The magic piece of code that will
> enable this is Mips2Java.
> 
> Unfortunately, at this time, Xen does not yet run on mips.  So, we are looking
> for volunteers to port Xen to mips, so that then we can have Xen run under
> Kaffe, which will then let us run it on the final platform, mobile phones.

Sounds crazy.  It's got some hack value, I guess.  :-)

How about x86 to Java?  Here's a starting point:

http://emulin.netfort.gr.jp/

I bookmarked it a long time ago, and I'm mildly intrigued, but not 
enough to actually try it out, I guess.

Of course, since you'd have to emulate the x86 platform anyways, I'm not 
sure what running Xen on top of it provides...

I can't imagine anyway that it's going to be fast.  I'm imagining that 
it would be like running Xen on Bochs, but much slower.  You'd have to 
emulate physical memory and the MMU using garbage collection.

BTW -- I'm still working on moving the Kaffe server over to a Xen 
session on my new server.  I'm a bit slow - I'll get it done someday. :-)

Cheers,

  - Jim

Re: java control of xen

[Jacob Gorm Hansen]

Adam Heath wrote:
> In an effort to push xen into more parts of the computing world, I am
> announcing the start of a brand new project here at Brainfood.
> 
> Our plans are to port Xen to run *inside* a JVM(Kaffe), so that we can make
> use of the write-one-run-anywhere mantra.  The magic piece of code that will
> enable this is Mips2Java.
> 
> Unfortunately, at this time, Xen does not yet run on mips.  So, we are looking
> for volunteers to port Xen to mips, so that then we can have Xen run under
> Kaffe, which will then let us run it on the final platform, mobile phones.

I am all for that, I also think you guys should consider porting the 
Jython Java/Python runtime to run inside Xen, so that in the longer term 
we will be able take advantage of the Twisted libraries in Xen, for 
instance I imagine the scheduler could be rewritten on top of Twisted's 
excellent async programming framework. This would also make room for 
more use of SOAP and XML, so that security policies for sHype could be 
fetched on-demand from a centralized web-service. Talk about an agile, 
service-oriented VMM!

Jacob

Re: java control of xen

[Adam Heath]

On Fri, 1 Apr 2005, Jacob Gorm Hansen wrote:

> Adam Heath wrote:
> > In an effort to push xen into more parts of the computing world, I am
> > announcing the start of a brand new project here at Brainfood.
> >
> > Our plans are to port Xen to run *inside* a JVM(Kaffe), so that we can make
> > use of the write-one-run-anywhere mantra.  The magic piece of code that will
> > enable this is Mips2Java.
> >
> > Unfortunately, at this time, Xen does not yet run on mips.  So, we are looking
> > for volunteers to port Xen to mips, so that then we can have Xen run under
> > Kaffe, which will then let us run it on the final platform, mobile phones.
>
> I am all for that, I also think you guys should consider porting the
> Jython Java/Python runtime to run inside Xen, so that in the longer term
> we will be able take advantage of the Twisted libraries in Xen, for
> instance I imagine the scheduler could be rewritten on top of Twisted's
> excellent async programming framework. This would also make room for
> more use of SOAP and XML, so that security policies for sHype could be
> fetched on-demand from a centralized web-service. Talk about an agile,
> service-oriented VMM!

Actually, with everything running in java, we will be able to levage lots of
existing java apis.  Think networking done RMI.  Or shared-memory in xen
implemented thru JDBC.  And linux IPC done with JNDI.

The possibilities are endless.

Re: [kaffe] Re: java control of xen

[Adam Heath]

On Fri, 1 Apr 2005, Jacob Gorm Hansen wrote:

> Adam Heath wrote:
> > In an effort to push xen into more parts of the computing world, I am
> > announcing the start of a brand new project here at Brainfood.
> >
> > Our plans are to port Xen to run *inside* a JVM(Kaffe), so that we can make
> > use of the write-one-run-anywhere mantra.  The magic piece of code that will
> > enable this is Mips2Java.
> >
> > Unfortunately, at this time, Xen does not yet run on mips.  So, we are looking
> > for volunteers to port Xen to mips, so that then we can have Xen run under
> > Kaffe, which will then let us run it on the final platform, mobile phones.
>
> I am all for that, I also think you guys should consider porting the
> Jython Java/Python runtime to run inside Xen, so that in the longer term
> we will be able take advantage of the Twisted libraries in Xen, for
> instance I imagine the scheduler could be rewritten on top of Twisted's
> excellent async programming framework. This would also make room for
> more use of SOAP and XML, so that security policies for sHype could be
> fetched on-demand from a centralized web-service. Talk about an agile,
> service-oriented VMM!

Hahaha, some people are easy.

Please take a look at the date this mail was sent.

Re: [kaffe] Re: java control of xen

[Jim Pick]

Adam Heath wrote:
> On Fri, 1 Apr 2005, Jacob Gorm Hansen wrote:
> 
> 
>>Adam Heath wrote:
>>
>>>In an effort to push xen into more parts of the computing world, I am
>>>announcing the start of a brand new project here at Brainfood.
>>>
>>>Our plans are to port Xen to run *inside* a JVM(Kaffe), so that we can make
>>>use of the write-one-run-anywhere mantra.  The magic piece of code that will
>>>enable this is Mips2Java.
>>>
>>>Unfortunately, at this time, Xen does not yet run on mips.  So, we are looking
>>>for volunteers to port Xen to mips, so that then we can have Xen run under
>>>Kaffe, which will then let us run it on the final platform, mobile phones.
>>
>>I am all for that, I also think you guys should consider porting the
>>Jython Java/Python runtime to run inside Xen, so that in the longer term
>>we will be able take advantage of the Twisted libraries in Xen, for
>>instance I imagine the scheduler could be rewritten on top of Twisted's
>>excellent async programming framework. This would also make room for
>>more use of SOAP and XML, so that security policies for sHype could be
>>fetched on-demand from a centralized web-service. Talk about an agile,
>>service-oriented VMM!
> 
> 
> Hahaha, some people are easy.
> 
> Please take a look at the date this mail was sent.

:-)

Cheers,

  - Jim