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    SubjectRe: [PATCH 3/4] new timeofday x86-64 arch specific changes (v. B1)
    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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