linux-kernel - Re: [PATCH 4/4] x86/pci: update pirq_enable

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Date:	Wed, 6 May 2009 08:48:45 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Yinghai Lu <yinghai@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH 4/4] x86/pci: update pirq_enable_irq to setup io apic
 routing -v2

On Wed, 6 May 2009 14:45:58 +0200
Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Yinghai Lu <yinghai@...nel.org> wrote:
> 
> > so we could set io apic routing only when enable device irq.
> > 
> > also could make setup_IO_APIC_irqs and setup_ioapic_dest only handle
> > first ioapic...
> > 
> > v2: remove one one not needed style change.
> >     merge the patch only setup io_apic for acpi on in
> > setup_IO_APIC_irqs
> > 
> > [ Impact: make mptable irq enable more like acpi is used, and
> > numa_irq_desc could get correct node when acpi=off ]
> > 
> > Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> > 
> > ---
> >  arch/x86/kernel/apic/io_apic.c |  148
> > ++++++++++++++++++++---------------------
> > arch/x86/pci/irq.c             |   84 ++++++++--------------- 2
> > files changed, 103 insertions(+), 129 deletions(-)
> 
> Ok, i guess this makes sense with acpi-less bootup modes.
> 
> There's hefty impact on io_apic.c and pci/irq.c as well. The io-apic 
> code already has a fair amount of changes queued up. Jesse: do you 
> have pci/irq.c changes queued up? If you agree with the patch, how 
> should we handle this?

No I don't have anything recent...  and since this stuff is intertwined
with the io_apic changes I'm fine with it going through you guys.

-- 
Jesse Barnes, Intel Open Source Technology Center
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