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SubjectRe: is killing zombies possible w/o a reboot?
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@tmr.com)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
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