Messages in this thread | | | Date | Tue, 29 Jul 2003 13:14:23 +0200 | Subject | Re: The well-factored 386 | From | Helge Hafting <> |
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On Mon, Jul 28, 2003 at 08:41:27PM +0100, Jamie Lokier wrote: > I didn't realise he was talking about an x86 emulator. I thought he > was analyzing real hardware. > > The one thing that made it on-topic for me was his quiet suggestion > that "forreal" mode interrupts are faster, and that it might, perhaps, > be possible to modify a Linux kernel to run in that mode - to take > advantage of the faster interrupts.
That would have to be a kernel for very special use. The "forreal" mode has protection turned off. As far as I know, that means any user process can take over the cpu as if it was running in kernel mode.
Perhaps useful for some embedded use with only a couple well-tested processes running. Still, a programming error could overwrite kernel memory instead of segfaulting.
Helge Hafting - 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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