linux-kernel - Re: [patch] x86, irq: don't block IRQ0_VECTOR..IRQ15

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Message-Id: <1263936200.2814.55.camel@sbs-t61.sc.intel.com>
Date:	Tue, 19 Jan 2010 13:23:20 -0800
From:	Suresh Siddha <suresh.b.siddha@...el.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch] x86, irq: don't block IRQ0_VECTOR..IRQ15_VECTOR's on
 all cpu's

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

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