Re: wait on vr4181 part 2

[Jun Sun <jsun@mvista.com>]

On Mon, Apr 28, 2003 at 10:16:18AM -0700, Steven Seeger wrote:
> If there is no wait, then what's that in arch/mips/vr4181/osprey/reset.c ?

Simple - it is a bug. :)

I got a confirmation from NEC that Vr4181 does _not_ have wait instruction.
It should generate an exception though.

In the halt case, kernel is probably in such a zombie state that we
don't even see the exception.

Jun

> void nec_osprey_halt(void)
> {
>       printk("KERN_NOTICE "\n** You can safely turn off the power.\n");
>       while(1)
>               __asm__(".set\tmips3\n\t"
>                       "wait\n\t"
>                       ".set\tmips0");
> }
> 
> Steve
>