linux-kernel - Re: cpumask: fix compat getaffinity

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Date:	Wed, 12 May 2010 03:30:45 -0500
From:	Milton Miller <miltonm@....com>
To:	Arnd Bergmann <arnd@...db.de>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rusty Russell <rusty@...tcorp.com.au>, Greg KH <greg@...ah.com>
Cc:	<linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>
Subject: Re: cpumask: fix compat getaffinity


At least for parsing, we need to allocate and parse NR_CPUS until
all places like arch/powerpc/platforms/pseries/xics.c that compare a
user-supplied mask to CPUMASK_ALL are eliminated.


> Would it make sense to use my initial patch for -stable, which reverts
> the ABI back to before the change that caused the problem, but apply
> the correct fix (changing the ABI throughout) for future releases?

This would definitly be the conservative fix.

milton
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