Messages in this thread | | | Date | Thu, 04 Nov 2004 15:10:58 -0500 | From | Bill Davidsen <> | Subject | Re: is killing zombies possible w/o a reboot? |
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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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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