Date: Mon, 6 Aug 2007 17:25:02 +0200
From: Ingo Molnar <mingo@elte.hu>
To: "Luiz Fernando N. Capitulino" <lcapitulino@mandriva.com.br>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i386: convert mm_context_t semaphore to a mutex
Message-ID: <20070806152502.GA6988@elte.hu>
References: <20070803105540.4f85ae09@localhost> <20070806074608.GA12415@elte.hu> <20070806103615.4be4670f@localhost>
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* Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> wrote:

> | hm, looks good to me but i'm wondering why this was a holdout for 
> | such a long time :-) Did you manage to test actual LDT functionality 
> | with this patch applied?
> 
>  No, I didn't. The only test I did was to run the kernel with this 
> patch applied.
> 
>  I'll manage to test it then. Do you have a test-case or has any 
> suggestion?

i think try any pthread program with:

   export LD_ASSUME_KERNEL=2.4.0

should trigger the LDT code. Try stracing the code and modify_ldt calls 
should show up.

>  Oh, btw, I forgot to 'quilt add arch/i386/mm/fault.c' [...]

heh. After a dozen of such incidents i scripted my editor command to 
automatically do the quilt add :)

	Ingo
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