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Subject: Re: [patch] x86, irq: don't block IRQ0_VECTOR..IRQ15_VECTOR's on
 all cpu's
From: Suresh Siddha <suresh.b.siddha@intel.com>
Reply-To: Suresh Siddha <suresh.b.siddha@intel.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@elte.hu>,
       Thomas Gleixner <tglx@linutronix.de>,
       "Eric W. Biederman" <ebiederm@xmission.com>,
       LKML <linux-kernel@vger.kernel.org>
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Organization: Intel Corp
Date: Tue, 19 Jan 2010 13:23:20 -0800
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On Tue, 2010-01-19 at 12:59 -0800, Yinghai Lu wrote:
> when PIC is used, if the user is setting /proc/irq/[0-15]/smp_affinity to cpu other than 0,
> we need to prevent that happen.

If it is handled by i8259A_chip, then even today we won't be able to
change smp_affinity because of no "set_affinity" for that irq_chip.

thanks,
suresh