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

From: Yinghai Lu
Date: Sun Mar 30 2008 - 16:23:25 EST


On Wed, Mar 26, 2008 at 12:38 AM, Ingo Molnar <mingo@xxxxxxx> wrote:
>
> * Jack Steiner <steiner@xxxxxxx> wrote:
>
> > > > - obj-y += genapic_64.o genapic_flat_64.o
> > > > + obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o
> > >
> > > Definitely should be a CONFIG
> >
> > Not sure that I understand why. The overhead of UV is minimal & we
> > want UV enabled in all distro kernels. OTOH, small embedded systems
> > probably want to eliminate every last bit of unneeded code.
> >
> > Might make sense to have a config option. Thoughts????
>
> i wouldnt mind having UV enabled by default (it can be a config option
> but default-enabled on generic kernels so all distros will pick this hw
> support up), but we definitely need the genapic unification before we
> can add more features.

config option would be reasonable.
for x86_64
subarch already have X86_PC, X86_VSMP.
we have X86_UVSMP

YH
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