linux-kernel - Re: PATCH - x86-64 signed-compare bug, was Re: select() setting ERESTARTNOHAND (514).

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Message-Id: <20070110.164320.12186318.davem@davemloft.net>
Date:	Wed, 10 Jan 2007 16:43:20 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	neilb@...e.de
Cc:	jafo@...my.com, linux-kernel@...r.kernel.org, ak@...e.de
Subject: Re: PATCH - x86-64 signed-compare bug, was Re: select() setting
 ERESTARTNOHAND (514).

From: Neil Brown <neilb@...e.de>
Date: Thu, 11 Jan 2007 11:37:05 +1100

> On x86-64, regs->rax is "unsigned long", so the following is
> needed....
> 
> I haven't tried it yet.

Doesn't type promotion take care of that?  Did you verify
that assember?

I checked the assembler on sparc64 for similar constructs
and it does the right thing.
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