linux-kernel - Re: [uml-devel] [PATCH] UML

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Message-ID: <20070924200127.GB25202@c2.user-mode-linux.org>
Date:	Mon, 24 Sep 2007 16:01:27 -0400
From:	Jeff Dike <jdike@...toit.com>
To:	Paolo Giarrusso <p.giarrusso@...il.com>
Cc:	user-mode-linux-devel@...ts.sourceforge.net,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [uml-devel] [PATCH] UML - Fix irqstack crash

On Thu, Sep 20, 2007 at 05:57:49PM +0200, Paolo Giarrusso wrote:
> Yes, indeed - or sign extension on 64bit machines would set to 1 the whole 
> high-word.
> 
> But using long for that mask makes no difference; either int or long
> long (or  better, either u32 or u64) should be used, given that the
> used signal range  is the same on 32 and 64bit machines, it should
> be u32 for normal signals or u64 if RT-signals are also allowed.

We don't use RT signals for anything, so we could use u32.  I don't
see it making much difference though.

				Jeff

-- 
Work email - jdike at linux dot intel dot com
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