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Subject: Re: [patch] x86, apic: use 0x20 for the IRQ_MOVE_CLEANUP_VECTOR 
	instead of 0x1f
From: Yinghai Lu <yinghai@kernel.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>, Ingo Molnar <mingo@elte.hu>,
       Thomas Gleixner <tglx@linutronix.de>,
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On Fri, Jan 8, 2010 at 6:19 PM, H. Peter Anvin <hpa@zytor.com> wrote:

> However, my most serious concern with this patch is that there is a
> fairly significant change due to this patch, which is that the legacy
> IRQ vectors now fall *inside* the FIRST_DEVICE_VECTOR range.  This isn't
> a bad thing -- in fact, it is fundamentally the right thing to do
> especially once we consider platforms which *don't* have the legacy IRQs
> -- but it makes me scared of unexpected behavior changes as a result.
> If you feel confident that that is not the case, could you outline why
> it shouldn't be a problem?
>

if it is not used by ioapic instead of legacy,
do we need to re assign irq0 to irq15 domain from all cpus to
apic->vector_allocation_domain()?

YH