elated to IRQ
compression -- the IRQ0 timer workaround and
the VIA PCI IRQ workaround.

3. size

All i386 kernels with IOAPIC support contain an int[4096] --
a 4 page array to contain the renamed IRQs.

So while the irq compression code on i386 should really
be deleted -- even before merging the x86_64 irq-overhaul,
this patch simply disables it on all high volume systems
to avoid problems #1 and #2 on most all i386 systems.

A large system with pin numbers >=64 will still have compression
to conserve limited IRQ numbers for sparse IOAPICS.  However,
the vast majority of the planet, those with only pin numbers < 64
will use an identity GSI -> IRQ mapping.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
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