Messages in this thread | | | Date | Thu, 6 Dec 2001 10:45:10 +0200 | From | Petri Kaukasoina <> | Subject | Re: VIA acknowledges North Bridge bug (AKA Linux Kernel with Athlon |
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On Thu, Dec 06, 2001 at 12:41:36AM +0000, Alan Cox wrote: > We already have one. The Linux folks saw the problem much earlier than > windows people because our athlon optimised memory copies triggered it > reliably on many boards.
The details were a bit different in that web page:
Linux looks for chip with id 1106:0305 (KT133) and clears only bit 7 of register 55. The Windows driver checks for chips 1106:0305, 1106:3099, 1106:3102, 1106:3112, and clears three bits: bits 5-7 of that register. In addition, the web page tells that it's probably not right for 1106:3099 (KT266) because there it should be register 95.
Maybe this is not relevant: maybe all BIOSes for KT266 chipsets already set the right values and maybe KT133 boards with problems only have bit 7 set, not bits 5 and 6. (PCs here with KT133 already have all bits 5-7 zero in reg. 55 and PCs with KT266 have bits 5-7 both in reg. 55 and 95 zero.) - 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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