Re: user-mode port 0.44-2.4.7

Linus Torvalds (torvalds@transmeta.com)
Mon, 23 Jul 2001 10:32:32 -0700 (PDT)


On Mon, 23 Jul 2001, Andrea Arcangeli wrote:
>
> it's the other way around, it's needed and gcc trapped a kernel bug.

No it's not.

> If the contents of memory not declared volatile changes under GCC (like
> it can happen right now for xtime since it's declared non volatile), gcc
> has the full rights to crash the kernel at runtime.

Absolutely not.

If we care abotu the thing always having the same value, we HAVE to use a
lock. "volatile" is not the answer.

Show me a place where we care.

Linus

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