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From: JinShan Xiong <jinshan.xiong@gmail.com>
To: linux-ia64@vger.kernel.org
Subject: Re: How to intercept system calls on ia64 linux kernel
Date: Tue, 01 Feb 2005 02:53:42 +0000	[thread overview]
Message-ID: <b3b26beb05013118532a9e96ca@mail.gmail.com> (raw)
In-Reply-To: <b3b26beb050130195674d2930c@mail.gmail.com>

OK.

Thanks a lot.

JinShan


On Mon, 31 Jan 2005 09:34:32 -0800, David Mosberger
<davidm@napali.hpl.hp.com> wrote:
> Note that it is very dangerous to compile kernel modules like so:
> 
> >>>>> On Mon, 31 Jan 2005 11:56:43 +0800, JinShan Xiong <jinshan.xiong@gmail.com> said:
> 
>   JinShan> gcc -c -D__KERNEL__ -DMODULE -I/lib/modules/`uname
> 
> This is missing the -mfixed-rangeñ2-f15,f32-f127 option, which means
> that more complicated modules will end up trashing floating-point
> registers which means that your module will cause random crashes in
> user-level codes.  I'd recommend to compile modules the same way as normal
> kernel code, except that you need to remove the -mconstant-gp flag.
> 
> In 2.6, this has gotten a lot easier, since modules are built using
> the normal kbuild infrastructure.
> 
>         --david
>

      parent reply	other threads:[~2005-02-01  2:53 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-01-31  3:56 How to intercept system calls on ia64 linux kernel JinShan Xiong
2005-01-31 17:34 ` David Mosberger
2005-02-01  2:53 ` JinShan Xiong [this message]

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