Re: [rtl] rtLinux on MPC 8260

[Wolfgang Denk <wd@denx.de>]

Dear Victor,

in message <20000802133745.B15037@hq.fsmlabs.com> you wrote:
>
> We are in the midst of some deadlines and look forward to seeing workig
> code from you!

Thanks for your message - it's nice to know you are listening.

You can be sure that I will try to debug these things -  as  my  time
permits.

But: the problem I ran into is a DESIGN problem: the RT-Linux  module
tries  to write to low kernel memory, which is write-protected on the
PPC. It's  trivial  to  work  around  that  and  make  kernel  memory
writable.  But  I  guess  the  kernel  text pages are read-only for a
reason.

That means the design of RT-Linux is incompatible with the design  of
the PPC Linux kernel. Given the fact that I just started to look into
RT-Linux  I  am  not  in  the  position  to  comment  on  such design
decisions.

Some comment from you or Cort might help a bit.

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
 The software required `Windows 95 or better', so I installed Linux.