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Subject: Re: [PATCH] Fix CPU bitmask truncation
From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Andreas Schwab <schwab@suse.de>
Cc: William Lee Irwin III <wli@holomorphy.com>,
       Linus Torvalds <torvalds@transmeta.com>,
       Linux Kernel List <linux-kernel@vger.kernel.org>, bjorn_helgaas@hp.com
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	 <20021220103028.GB9704@holomorphy.com>  <je7ke4yje3.fsf@sykes.suse.de>
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Date: 20 Dec 2002 10:23:17 -0800
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On Fri, 2002-12-20 at 04:17, Andreas Schwab wrote:
> This is useless.  Assigning -1 to any unsigned type is garanteed to give
> you all bits one, and with two's complement this also holds for any signed
> type.

Only if the -1 is the same size as the unsigned type.  Otherwise it will
be 0-extended.

	J

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