Re: How do I learn the Hurd stuff?

[Richard Braun]

On Thu, Aug 30, 2018 at 06:15:28PM +0200, Almudena Garcia wrote:
> It's not only a test. Obviously, It must start as a test, but I want to add
> this to Hurd if runs.
> 
> 
> 
> El jue., 30 ago. 2018 a las 18:02, Richard Braun (<rbraun@sceen.net>)
> escribió:
> 
> > On Thu, Aug 30, 2018 at 05:53:42PM +0200, Almudena Garcia wrote:
> > > I've said It yet.
> > >
> > > > As this
> > > > form, we don't need to know how many cores has the processor and set
> > the
> > > > core number in Mach in compilation time. Instead, the same processor
> > will
> > > > detect the cores number and configure SMP automatically.
> > >
> > > I don't know the exact assembly instructions, but I read about the
> > > processor can be configured from assembly to run in multicore mode.
> > > Then, what we had to do is to write a routine that initializes the
> > > processor with this multicore support, during Mach boot.
> > >
> > > In this guide, in Chapter 8.4 feels to be a better explanation about how
> > to
> > > do this (initialization example in 8.4.4):
> > >
> > https://www.intel.com/content/www/us/en/architecture-and-technology/64-ia-32-architectures-software-developer-vol-3a-part-1-manual.html
> >
> > Oh, so it's merely runtime probing.

That's not what I meant. Please improve your English.

You're heavily misusing words here. You're not talking about a "hardware
SMP implementation", just asking the system how many processors it has.
That's a very tiny detail among all that's required to write a decent
scalable SMP kernel.

-- 
Richard Braun