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

[Andi Kleen]

> 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.

-Andi
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