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Date:	Wed, 5 Mar 2014 10:36:57 +0000
From:	David Vrabel <>
To:	Thomas Gleixner <>
CC:	LKML <>,
	Peter Zijlstra <>,
	Ingo Molnar <>,
	Konrad Rzeszutek Wilk <>,
	Xen <>
Subject: Re: [patch 4/5] xen: Validate online cpus in set_affinity

On 04/03/14 20:43, Thomas Gleixner wrote:
> The user space interface does not filter out offline cpus. It merily
> verifies that the mask contains at least one online cpu. So the
> selector in the irq chip implementation needs to make sure to pick
> only an online cpu because otherwise:
>      Offline Core 1
>      Set affinity to 0xe
>      Selector will pick first set bit, i.e. core 1

Reviewed-by: David Vrabel <>


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