Messages in this thread | | | Date | Mon, 6 Jun 2005 11:24:14 +0200 | From | Dominik Brodowski <> | Subject | Re: [PATCH 3/4] new timeofday x86-64 arch specific changes (v. B1) |
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On Mon, Jun 06, 2005 at 11:21:59AM +0200, Andi Kleen wrote: > > IIRC (from the comment above) several chipsets suffer from this > > inconsistency, namely the widely used PIIX4(E) and ICH(4 only? or also other > > ICH-ones?). Therefore, we'd need at least some sort of boot-time check to > > decide which method to use... and based on the method, we can adjust the > > priority maybe? > > At least on x86-64 there are no ICH4s or PIIX4Es. Actually I think > there was one early prototype machine from Intel with ICH4, but I am willing > to ignore these. So please dont do any such things on the x86-64 version. > > Also didnt ICH4 already have HPET? it might not be enabled on many > boxes, but given the chip datasheet one can write enable code to > fix that.
At least on my notebook, which has an ICH4-M, there is no HPET. AFAIK it resides on a separate chip which may or may not exist. I'd be glad if the opposite were true, though :)
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