Re: [PATCH v2 2/2] tools/hvmloader: Replace LAPIC_ID() with cpu_to_apicid[]

["Alejandro Vallejo" <alejandro.vallejo@cloud.com>]

On Tue Feb 4, 2025 at 3:07 PM GMT, Jan Beulich wrote:
> On 04.02.2025 15:45, Alejandro Vallejo wrote:
> > --- a/tools/firmware/hvmloader/config.h
> > +++ b/tools/firmware/hvmloader/config.h
> > @@ -48,8 +48,9 @@ extern uint8_t ioapic_version;
> >  
> >  #define IOAPIC_ID           0x01
> >  
> > +extern uint32_t *cpu_to_apicid;
>
> Strictly speaking this ought to be part of the earlier patch. If hvmloader
> was Misra-checked, this would be a (transient) violation.

Hmmm. I don't see it. The previous patch is fully contained in smp.c and this
extern isn't required until now. Does MISRA have mandates on non-static symbols
not present in headers?

The global could be static in patch1, but seems silly seeing how it'd be undone
here.

>
> config.h is also somewhat odd a place to put this declaration, yet then I
> can't really suggest anything better.
>
> Jan

Any header will do but there's no better one I could find, and I'd rather not
create a new one just for this.

Cheers,
Alejandro