Re: [PATCH] i386: convert mm_context_t semaphore to a mutex

Ingo Molnar
2007-08-06T15:25:29Z

* 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