Purpose of ping-pong in l4linux

Jean Wolter jean.wolter at inf.tu-dresden.de
Tue Oct 1 16:36:34 CEST 2002


Jacob Gorm Hansen <jg at ioi.dk> writes:

> what is the purpose of the ping-pong task in l4linux? I can see that it
> handles vmalloc requests for the kernel, but why does it need its own
> task for this?

For some reasons intra task mapping where forbidden in the original L4
implementation from Jochen Liedtke, so we had to play ping pong with
the mapping. Unfortunatly nobody can remember what the real reason for
this design decision was...

Regards,
Jean




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