Re: Coyotos vs. EROS

[Justin Emmanuel]

Appreciated I will.

On 28/10/05, ness <address@hidden> wrote:
> Justin Emmanuel wrote:
> > OK! I give up.
> >
> > 1) What is an endpoint?
> >
> > Once I know that I will know what a capability or an IPC endpoint is.
> >
> An endpoint is a replacement for thread ids, at least in l4. I don't
> know what this is good for in coyotos, actually eros had start
> capabilities. Maybye sth. related to events (asynchronus IPC).
> For a more general introuduction see the l4.sec paper by bernhard kauer.
>
> > Been searching for this information on the net and I have not so far
> > come up with anything.
> >
> > On 28/10/05, Jonathan S. Shapiro <address@hidden> wrote:
> >
> >>I do not recall if I have described the gap from Coyotos to EROS here. I
> >>have just updated the comparison page at
> >>
> >>        http://www.coyotos.org/docs/misc/eros-comparison.html
> >>
> >>Surprisingly, the items haven't changed much since I first wrote it. If
> >>you read the list of changes, what you will conclude is that
> >>
> >>  a) This is a total kernel rewrite. We can borrow a lot of code and
> >>     ideas from the EROS kernel, but we are touching enough places that
> >>     it really isn't the same kernel.
> >>
> >>  b) With the exception of endpoints, none of the changes are
> >>     conceptually very large. We have refined various data structures
> >>     and simplified some of them, but the basic ideas and concepts of
> >>     EROS are pretty clearly preserved in Coyotos.
> >>
> >>  c) A few programs will change significantly because endpoints and
> >>     events will have significant impact on these programs.
> >>
> >>The really important thing here is that the basic design model and idiom
> >>hasn't changed. This means that the intuition and experience we have
> >>from EROS is very directly applicable in Coyotos.
> >>
> >>
> >>shap
> >>
> >>
> >>
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> >>
> >
> >
> >
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>
> --
> -ness-
>
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