Re: [PATCH 11/15] x86: move enabling of io_apic to prepare_cpus

[Glauber Costa]

Yinghai Lu wrote:
> On Mon, Jun 9, 2008 at 7:46 PM, Maciej W. Rozycki <macro@xxxxxxxxxxxxxx> wrote:
> > On Mon, 9 Jun 2008, Maciej W. Rozycki wrote:
> >
> > > > we need clear_IO_APIC before enable setup error vector, in case there
> > > > is wrong setting in ioapic by BIOS...
> > >  Fair enough, although it is still interesting why it would only trigger
> > > in the 64-bit mode and why shouldn't the BIOS be fixed instead.
> >  Then again -- what if X86_LOCAL_APIC is set, but X86_IO_APIC is not?
>
> config X86_LOCAL_APIC
>         def_bool y
>         depends on X86_64 || (X86_32 && (X86_UP_APIC || ((X86_VISWS ||
> SMP) && !X86_VOYAGER) || X86_GENERICARCH))
>
> config X86_IO_APIC
>         def_bool y
>         depends on X86_64 || (X86_32 && (X86_UP_IOAPIC || (SMP &&
> !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH))
>
> for 64bit, those are all set.
>
> for 32bit, may need to null stub if X86_IO_APIC is not set
>
> YH
Fair Enough.
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