L4linux kernel module and IPC problem

Adam Lackorzynski adam at os.inf.tu-dresden.de
Fri Apr 29 15:59:00 CEST 2005

On Fri Apr 29, 2005 at 06:45:57 +0200, Leon Brits wrote:
> I've created some test code in a L4 Task, L4Linux App and L4Linux Kernel
> (2.4.28) module that communicates using short IPC messages. It works
> fine except that it seems that I can not send an IPC message to the
> L4Linux App from the Kernel Module (reverse is fine). l4_ipc_send() does
> not report any errors, but the App does not receive anything and the
> register values contains some 'random' values.

May I ask why you are trying to communicate with L4 IPC instead of using
Linux primitives for the App<->Linux case? This sound strange at least.

When you say "the register values contains some 'random' values", do you
mean that the IPC syscall returns without error but the message words
contain values they're not supposed to contain?

Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/

More information about the l4-hackers mailing list