Re: is killing zombies possible w/o a reboot?

[Bill Davidsen]

Mitchell Blank Jr wrote:
> Russell Miller wrote:
>
> > Couldn't ring 1 be used to make 
> > sure an errant driver doesn't drop the kernel, at least on x86 machines?
>
>
> Not really -- drivers could still do things like mis-program their associated
> hardware making it do DMA writes all over kernel memory (just as one example)
>
> Basically it'd add a lot of complexity (and inefficiency) without adding
> much real safety.

It would be nice on x86 to run ring 1 for kernel debugging, getting 
faults at appropriate points. Sorry, I'm an old MULTICS guy, wish 
Honeywell would OS it.

--
   -bill davidsen (davidsen@xxxxxxx)
"The secret to procrastination is to put things off until the
 last possible moment - but no longer"  -me
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