Re: [patch 5/6] lightweight robust futexes: i386

[Ulrich Drepper]

On 2/21/06, Chuck Ebbert <76306.1226@xxxxxxxxxxxxxx> wrote:
> > +             : "=a" (oldval), "=m" (*uaddr)
>                                  ^^^^
>    Should be "+m" because it's both read and written.

No, this is why there is the "0" input parameter.


\> > +             : "memory"
>                   ^^^^^^^^
>    Is this necessary? Every possible memory location that could be
> affected has been listed in the operands if the above change is made.

This makes the asm a barrier for the compiler.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/