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    SubjectRe: [linux-kernel] Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override.
    > The PIT usage for calibrating the delay loop can be moderated, if need 
    > by, by using the PC BIOS which by definition uses the PIT correctly it
    > its int 15 function 83 call.. Just do it before coming up in a state
    > where the PC BIOS int 15h calls no longer work. I gave code to do this
    > in a much earlier message.

    And as I've said before we don't know if we have a PC BIOS. If we are
    running from a kexec or on a Macintoy with EFI or an Xbox we may not.

    As per previous discussions for the PIT we can simply guess a safe
    initial udelay value and then tune the real one.

    Alan


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