Messages in this thread | | | Subject | Re: Voyager subarchitecture for 2.5.46 | From | john stultz <> | Date | 05 Nov 2002 18:31:04 -0800 |
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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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