Re: [RFC 8/8] x86_64: Support for new UV apic

[Jack Steiner <steiner@sgi.com>]

> >   unsigned int get_apic_id(void)
> >   {
> >  -       return (apic_read(APIC_ID) >> 24) & 0xFFu;
> >  +       unsigned int id;
> >  +
> >  +       preempt_disable();
> >  +       id = apic_read(APIC_ID);
> >  +       if (uv_system_type >= UV_X2APIC)
> >  +               id  |= __get_cpu_var(x2apic_extra_bits);
> >  +       else
> >  +               id = (id >> 24) & 0xFFu;;
> >  +       preempt_enable();
> >  +       return id;
> >
> 
> you can not shift id here.
> 
> GET_APIC_ID will shift that again.
> 
> you apic id will be 0 for all cpu
> 

I think this is fixed in the patch that I submitted on Friday. I
had to rework the GET_APIC_ID() changes because of the unification
of -32 & -64 apic code. I think the new code is much cleaner...


--- jack