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    SubjectRe: [PATCH] x86: apic - unify APIC_DIVISOR
    On Fri, 10 Oct 2008, Venki Pallipadi wrote:

    > If there is no pressing reason to change the initial calibration value, how
    > about the simple patch below.
    > The 10^9 value that is used for 100 mS calibration time is pretty big as
    > tglx's comment points out. We will only underflow it if there is a
    > bus clock running at 10 GHz * 16 = 160 Ghz.
    > This way we will not fix something that is not really broken today and will not
    > break in foreseeable future.

    I am fine with this version too. The initial count value used for
    calibration is really arbitrary -- for all the systems I have seen the
    APIC clock was in the sub-MHz range. And 64-bit hardware runs both code
    variations so the choice of what the 32-bit code version does is
    appropriate as it is also known to work with 32-bit equipment.


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