Dresden proposed a user mode L4 project. Ie running L4/(arch blah) on top of Linux/(arch blah).
Cheers, Adam
On Tue, 22 Jan 2002, Daniel Potts wrote:
On 22 Jan 2002, Goswin Brederlow wrote:
Hi,
I hope this is the right place, havent read anything here for ages.
I was wondering whether the palcodes used by L4 on Alpha are disjunct to the ones used by OSF / BSD / Linux.
yes they are. An exception is l4_whoami which is an experimental syscall anyway. I think it maps directly to the OSF whoami call.
If not could they be made disjunct?
The idea I have in mind is to make a module for linux that catches the L4 syscalls and throws them back into user-space. That way a L4 environment could be setup within linux. It would be much like user-space-linux and would save a lot of reboots just to test out a few bytes of code.
heh :) That would be an interesting project. I'd be interested to know how (if) you will deal with device drivers, memory etc.
On the other hand, inside L4 you could do the same with OSF / BSD / Linux syscalls and thus run their binaries under L4. (You want to run Netscape under L4? Or Mathematica? Or something as simple as xemacs and gcc?)
A l4-linux for alpha would also need those changes (if any) I believe.
Yes that is how we would run unmodified Linux/Alpha binaries on L4..
Cheers, Daniel
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