On 1 Aug 2021, at 17:15, Gerwin Klein <kle...@unsw.edu.au> wrote:
> 
> I can confirm that "yield" is the only syscall in seL4 that does not need a 
> cap[*]. That is probably something that should be changed.

Indeed, it’s been on my list for a long time. In a cap system there shouldn’t 
be any syscalls that aren’t authorised by a cap.

Main issue is that we didn’t come up with a reasonable choice for the type of 
cap that would authorise yield. We’ll probably have to introduce an object just 
for that purpose.

Gernot
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