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    SubjectRe: Voyager subarchitecture for 2.5.46
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    Date
    On Tue, 2002-11-05 at 16:35, J.E.J. Bottomley wrote:
    > It includes the boot GDT stuff, added configuration options for the
    > kernel/timers directory so that things which can't maintain a TSC can turn it
    > off at compile time.

    Just a few comments on the CONFIG_X86_TSC changes:

    > diff -Nru a/arch/i386/Kconfig b/arch/i386/Kconfig
    > --- a/arch/i386/Kconfig Tue Nov 5 15:35:01 2002
    > +++ b/arch/i386/Kconfig Tue Nov 5 15:35:01 2002
    > @@ -1636,17 +1649,32 @@
    >
    > source "lib/Kconfig"
    >
    > +config X86_TSC
    > + bool
    > + depends on !VOYAGER && (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMIII || M686 || M586MMX || M586TSC)
    > + default y
    > +
    > +config X86_PIT
    > + bool
    > + depends on M386 || M486 || M586 || M586TSC || VOYAGER
    > + default y
    > +

    I'm fine w/ the X86_TSC change, but I'd drop the X86_PIT for now.

    Then make the arch/i386/timers/Makefile change to be something like:

    obj-y := timer.o timer_tsc.o timer_pit.o
    obj-$(CONFIG_X86_TSC) -= timer_pit.o #does this(-=) work?
    obj-$(CONFIG_X86_CYCYLONE) += timer_cyclone.o


    Then when you boot, boot w/ notsc and you should be fine.

    I do want to add some sort of TSC blacklisting so one doesn't always
    have to boot w/ notsc if your machine is
    detectable/compiled-exclusively= for. But I've got a few other issues in
    the queue first.

    thanks
    -john

    -
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