Re: [Xen-devel] [PATCH ARM v8 2/4] mini-os: arm: interrupt controller

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Fri, 2014-11-14 at 11:33 +0000, Julien Grall wrote:
> >> Though IIRC, mini-os for ARM is not yet SMP.
> >
> > It's difficult to see what needs to be done to support code that
> > doesn't exist yet. For example, would gic_init be called once, or once
> > per processor? Before or after the other processors are started?
> 
> Some part of the code maybe necessary: setting PPIs/SGIs... You can give 
> a look to Linux/Xen GIC drivers to have an idea on what is necessary.

This would be necessary as part of the port of mini-os to support SMP. I
don't see why it should be necessary now, going to SMP is surely going
to require a bunch of refactoring in other places too (Xen itself
certainly did).

Ian.


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