Date: Fri, 2 Jan 2004 12:47:41 -0800 (PST)
From: Linus Torvalds <torvalds@osdl.org>
To: Joe Korty <joe.korty@ccur.com>
cc: akpm@osdl.org, ak@suse.de, linux-kernel@vger.kernel.org,
       albert.cahalan@ccur.com, jim.houston@ccur.com
Subject: Re: siginfo_t fracturing, especially for 64/32-bit compatibility
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In-Reply-To: <20040102203820.GA3147@rudolph.ccur.com>
Message-ID: <Pine.LNX.4.58.0401021247010.5282@home.osdl.org>
References: <20040102194909.GA2990@rudolph.ccur.com>
 <Pine.LNX.4.58.0401021226150.5282@home.osdl.org> <20040102203820.GA3147@rudolph.ccur.com>
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On Fri, 2 Jan 2004, Joe Korty wrote:
>
> Indeed we do, and that is the problem.  32 bit apps by definition use
> the 32 bit version of siginfo_t and the first act the kernel has to do
> on receiving one of these is convert it to 64 bit for consumption by
> the rest of the kernel.  In order to do that, the kernel must know what
> fields in siginfo_t the user has set.

Ahh, a light goes on. Yeah, that's broken. Argh.

		Linus
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