Messages in this thread | | | Date | Wed, 15 Sep 2004 22:00:19 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 1/3] Separate IRQ-stacks from 4K-stacks option |
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* Bill Davidsen <davidsen@tmr.com> wrote:
> Okay, I'll be the one to ask... what overload of the IPL acronym are > you using here? I asked google and several jargon files, and they all > say that IPL (initial program load) is IBMspeak for cold boot. Somehow > I don't think that's what you mean here.
i understood it as Interrupt Privilege Levels. The notion of having some sort of scalar 'limit' - all interrupts with a higher priority than that will execute, all interrupts with lower priority will block. This is a fundamentally dodgy concept because in reality interrupt sources are independent entities so the natural description for of them is a bitmask (or an array, or whatever), not a level.
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