Re: emulating no-senders notifications in L4?

[Ondrej Hurt]

> > Are there no cases where the kernel kills a task without telling any
> > other task?

> No.  If, say, an exception is not handled properly the kernel just
> resumes it (or just removes it from the run queue, generating the
> impression that the task is spinning in an endless loop).  An example
> of such an exception is when a thread generates a page fault but there
> is no valid pager associated with thread that can handle the fault.
> The kernel can not simply decide to kill a task.  The decission to
> kill a task must be taken at user-level.
>
>       eSk

But who tells the user-level that a task is a candidate for slaughter
? The L4 user manuals says that shouldn't an exception be handled,
the faulting thread would be blocked forever. Nothing more.


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