Messages in this thread | | | Date | Fri, 21 Sep 2007 14:22:44 +0100 | From | "Peter Fordham" <> | Subject | fpu IO port reservation (arch/i386) |
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Hi,
Does anybody know why we reserve this range of IO ports for 'fpu'? AFAIK from all the IO maps I can find on the internet for various x86 chipsets only 0x00f0 is actaully ever used.
./arch/i386/kernel/setup.c 282 }, { 283 .name = "fpu", 284 .start = 0x00f0, 285 .end = 0x00ff, 286 .flags = IORESOURCE_BUSY | IORESOURCE_IO 287 } };
The reason I ask is that I've written a watchdog driver for a Nexcom MAX6600 server blade type device which has the watchdog control register at 0xF2. Currently request_region fails due to the fpu reservation.
regards,
Pete Fordham - 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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