Linked by Thom Holwerda on Mon 17th Sep 2012 16:56 UTC, submitted by Andy McLaughlin
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Member since:
2011-01-28
Laurence,
"That's a great idea in theory, but wouldn't it push kernels into a more hybrid or even -dare I say it- micro kernel design?"
I don't think so, but it's worth investigating. Linux can call VESA or UEFI without becoming more hybrid (note that's not the exact model I'm proposing per-say, but I never the less think it's a valid counter-example). Actually my gut instinct is to say the opposite may be more of a concern, how would a microkernel incorporate these drivers?
Obviously the microkernel's goal is to isolate the drivers from one another, would it be able to jail the drivers and still have them work? That depends how they're written. The standard would have to be very clear about how drivers could interact with the system, no direct manipulation of GDT or interrupt tables, drivers would need to request permission to access ports instead of assuming they're running in ring-0. They'd need standard ways to coordinate memory mapping. These murky details all need to be ironed out for sure, but with a well defined standard, a good reference implementation, a robust test suite, and a certification process, then we should have quality drivers that work everywhere without worrying about OS-specific quirks. I don't think an existing operating systems would need too many changes (assuming it's drivers were already modular and self-contained). It wouldn't be too different from writing a new OS-specific driver for a new piece of hardware, only this particular OS-specific driver will be capable of driving all hardware supported by the shared driver standard.
Edited 2012-09-18 16:07 UTC