[Xenomai] uml question

[Xenomai] uml question

[lux-integ]

Greetings

I have some DAS  boards to develop linux-device drivers for. So I am planning 
a driver-development-system. In my search on the internet for hints and clues  
I came across links of RTAI with user-mode-linux but none with xenomai and 
user-mode-linux.

I am attracted to doing  the driver-developments using the analogy-API of 
xenomai. So I would like to know if  xenomai can  be run on a user-mode-linux 
setup .



thanks in advance

sincerely
luxInteg

Re: [Xenomai] uml question

[Jan Kiszka]

On 2013-05-25 13:36, lux-integ wrote:
> Greetings
> 
> I have some DAS  boards to develop linux-device drivers for. So I am planning 
> a driver-development-system. In my search on the internet for hints and clues  
> I came across links of RTAI with user-mode-linux but none with xenomai and 
> user-mode-linux.
> 
> I am attracted to doing  the driver-developments using the analogy-API of 
> xenomai. So I would like to know if  xenomai can  be run on a user-mode-linux 
> setup .

UML is not supported, but you can do driver development very comfortably
inside virtual machines - at least on x86 (other archs are just gaining
virtualization support). See [1] for more details.

Jan

[1]
http://chemnitzer.linux-tage.de/2012/vortraege/folien/1061-VirtualDebugging.pdf

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Re: [Xenomai] uml question

[lux-integ]

On Monday 27 May 2013 06:49:35 Jan Kiszka wrote:
> 
> UML is not supported, but you can do driver development very comfortably
> inside virtual machines - at least on x86 (other archs are just gaining
> virtualization support). See [1] for more details.
> 
> Jan
> 
> [1]
> http://chemnitzer.linux-tage.de/2012/vortraege/folien/1061-VirtualDebugging
> .pdf

thanks for your link.  

does  'is-not-supported' =  "cant-be-done"?

"QEMU is a very flexible virtualization technology however it is quite slow 
and it is recommended that you understand and evaluate alternative solutions 
before picking this one"
-seZ RedHat here
http://fedoraproject.org/wiki/How_to_use_qemu
AND sez others here:-
http://blogs.igalia.com/berto/2007/06/27/comparing-virtualization-software-
performance-qemu-vs-uml-vs-kvm/

 so I might give both a try and report findings especially 
if
'is-not-supported' !=  "cant-be-done'

Re: [Xenomai] uml question

[Jan Kiszka]

On 2013-05-28 19:52, lux-integ wrote:
> On Monday 27 May 2013 06:49:35 Jan Kiszka wrote:
>>
>> UML is not supported, but you can do driver development very comfortably
>> inside virtual machines - at least on x86 (other archs are just gaining
>> virtualization support). See [1] for more details.
>>
>> Jan
>>
>> [1]
>> http://chemnitzer.linux-tage.de/2012/vortraege/folien/1061-VirtualDebugging
>> .pdf
> 
> thanks for your link.  
> 
> does  'is-not-supported' =  "cant-be-done"?

A lot can be done (in software), but this thing would not make sense.

> 
> "QEMU is a very flexible virtualization technology however it is quite slow 
> and it is recommended that you understand and evaluate alternative solutions 
> before picking this one"

QEMU is a CPU emulator is slow - compared to native or KVM-based
execution. Still, QEMU is faster in this domain than many other
*emulator*. But you don't need to worry when you have hardware
virtualization  support on your host and enabled KVM for QEMU.

Jan

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