Messages in this thread | | | Date | Tue, 15 Nov 2005 08:50:26 +0100 | From | Vojtech Pavlik <> | Subject | Re: [discuss] Re: [PATCH 13/39] NLKD/x86-64 - time adjustment |
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On Tue, Nov 15, 2005 at 02:05:24AM +0100, Andi Kleen wrote:
> On Tuesday 15 November 2005 01:38, George Anzinger wrote: > > > Doesn't this depend on the atomic nature of the 64-bit read? If it > > is really two 32-bit reads one would need to do extra work to make > > sure the two parts belong together. > > Please take a look at the Subject.
Still, the HPET doesn't necessarily have to be a 64-bit device. At least on AMD systems, where it's implemented in AMD8111 Thor, it's bundled together with other, 32-bit PCI devices like USB. On the other hand, the 8111 HPET doesn't implement a 64-bit conter, and it's likely that the Intel implementation in the northbridges (or *CH, as Intel prefers calling the things) is likely native 64-bit.
-- Vojtech Pavlik SuSE Labs, SuSE CR - 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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