Re: [PATCH 5/5] added an image to the hurd/what_is_the_gnu_hurd page.

[jbranso]

May 30, 2024 at 1:53 PM, "Samuel Thibault" <samuel.thibault@gnu.org> wrote:



> 
> Hello,
> 
> jbranso@dismail.de, le jeu. 30 mai 2024 13:29:49 -0400, a ecrit:
> 
> > 
> > * hurd/what_is_the_gnu_hurd.mdwn: I added the image from the
> > 
> >  open_issues/anatomy_of_a_hurd_system.mdwn. This page is probably
> > 
> >  something that is viewed a lot. People like images.
> > 
> >  ---
> > 
> >  hurd/what_is_the_gnu_hurd.mdwn | 9 ++++++++-
> > 
> >  1 file changed, 8 insertions(+), 1 deletion(-)
> > 
> >  
> > 
> >  diff --git a/hurd/what_is_the_gnu_hurd.mdwn 
> > b/hurd/what_is_the_gnu_hurd.mdwn
> > 
> >  index 8315bfff..09c26ee7 100644
> > 
> >  --- a/hurd/what_is_the_gnu_hurd.mdwn
> > 
> >  +++ b/hurd/what_is_the_gnu_hurd.mdwn
> > 
> >  @@ -33,7 +33,14 @@ provides the same standard interfaces known from other 
> > [[UNIX]]-like systems.
> > 
> >  Thus, for a typical user, the Hurd is intended to silently work in the
> > 
> >  background providing the services and infrastructure which the 
> > [[microkernel]]
> > 
> >  itself has no business implementing, but that are required for higher level
> > 
> >  -programs and libraries to operate.
> > 
> >  +programs and libraries to operate. Let's look at an example.
> > 
> >  +
> > 
> >  +[[!img open_issues/images/overview.svg]]
> > 
> >  +
> > 
> >  +Firefox invokes glibc's `send ()`, which in turn uses the pfinet (or
> > 
> >  +lwip) TCP/IP stack, which talk to our device drivers (rump or netdde),
> > 
> >  +which finally talk to GNU Mach. Only GNU Mach runs in kernel space!
> > 
> >  +Everything else is userspace!
> > 
> 
> Actually netdde doesn't even talk to GNU Mach. It directly uses i/o with
> 
> the hardware. The interrupt notification does go through GNU Mach, but
> 
> that could also use Intel's userland interrupt support to avoid that
> 
> part. So I'd say direct the arrow directly to the network board rather
> 
> than to GNU Mach.

I updated the image.  What do you think of that?
It's attached.  :)
 
> Samuel
>

overview.svg
Description: image/svg