> On Thu, 16 Dec 1999, Jamie Lokier wrote:
>
> > asm volatile("sti ; hlt" : : : "memory");
> ^^^^^^^^^
>
> The wakeup can still happen between sti and hlt so it doesn't fix the
> irq race condition.
Nope. Intel has a one-instruction delay after a sti. If the interrupt
comes in, it comes in "during" the hlt, and will cause the hlt to
complete.
Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/