Re: [Xen-devel] [PATCH v2 06/45] xen/arm: gic: Split the field state in gic_lr in 2 fields active and pending

[Julien Grall <julien.grall@xxxxxxx>]

On 16/03/2018 21:34, Stefano Stabellini wrote:
> On Thu, 15 Mar 2018, Andre Przywara wrote:
> > From: Julien Grall <julien.grall@xxxxxxx>
> > diff --git a/xen/include/asm-arm/gic.h b/xen/include/asm-arm/gic.h
> > index daec51499c..c32861d4fa 100644
> > --- a/xen/include/asm-arm/gic.h
> > +++ b/xen/include/asm-arm/gic.h
> > @@ -209,7 +209,8 @@ struct gic_lr {
> >      /* Virtual IRQ */
> >      uint32_t virq;
> >      uint8_t priority;
> > -   uint8_t state;
> > +   bool active;
> > +   bool pending;
> >      bool hw_status;
> >   };
> I like the readability but dislike the increase memory usage. I would
> have kept a single uint8_t and I would have used status flags as an
> approach, maybe I would have improved on those flags.
Why is that important? gic_lr will only be allocated on the stack...

Cheers,

--
Julien Grall

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