Thanks a lot Adam! I'll think about which road to take during Christmas.
Nice holidays,
Martin.
-----Ursprüngliche Nachricht----- Von: l4-hackers-bounces@os.inf.tu-dresden.de [mailto:l4-hackers-bounces@os.inf.tu-dresden.de] Im Auftrag von Adam Lackorzynski Gesendet: Samstag, 16. Dezember 2006 00:10 An: l4-hackers@os.inf.tu-dresden.de Betreff: Re: L4Linux on L4Ka::Pistachio
Hi,
On Fri Dec 15, 2006 at 10:11:14 +0100, Christian, Martin, OPEE45 wrote:
a) Is the L4Env required for running L4Linux?
Yes but that's no strict requirement.
How much time would it probably take, to adjust L4Linux without L4Env to the L4 Interface of Pistachio? Did anybody try this?
Something like this is in 2.4. I do not think this is particularly hard. The concepts are the same. One needs to get some memory from somewhere, start tasks somewhere, etc. I don't see big obstacles.
e) If Fiasco would be running on PowerPC, would it be possible to run L4Linux without changes?
If one wants to have binary compatibility then some PPC code needs to be there. And then that would not be the way I'm currently doing things.
As far as I understood Michael Hohmuths Diplomarbeit, all Hardware access from Linux is replaced by sycalls to L4. Is that still the case?
I'd rather they that it's adapted to run in user-level, using L4. Some of the instructions cannot be executes on user-level, they're replaced, or removed, or whatever.
And so far only the IA32 part of Linux is changed that way, isn't it? So
L4Linux is also running on ARM.
I would basically need to rewrite the PowerPC architecture part of Linux, basically. Isn't it the way things are supposed to be done?
Basically yes but all the architecture independant code is already there, and two example architectures.
Adam