Re: micro and macrokernel

[Olivier Galibert]

On Tue, Jun 20, 2000 at 01:17:32PM +0200, Erik Verbruggen wrote:
> Now, can't this be done by setting up a direct communication channel
> between two userspace processes? With a semaphore you can check on
> incoming messages, etc. This way you only need to do a context-switch if
> you ask the kernel to set up a direct message-channel.

Bzzt wrong.  Going userspace->kernel and back does not involve any
context switch.  It's going userspace->another userspace that does.

  OG.