Messages in this thread | | | Date | Wed, 3 Nov 2004 17:59:59 -0800 | From | Mitchell Blank Jr <> | Subject | Re: is killing zombies possible w/o a reboot? |
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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.
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