Messages in this thread | | | Date | Thu, 9 Oct 2008 09:14:34 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [PATCH] Re: x86_32 tsc/pit and hrtimers |
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On Wed, 8 Oct 2008, Jeff Hansen wrote:
> [HRTIMER]: Add highres=noverify option to bypass clocksource verification > > This disregards the CLOCK_SOURCE_MUST_VERIFY flag on all clocksources. > This is particularly useful on legacy x86_32 systems that have no ACPI, > LAPIC, or HPET timers, where only TSC and PIT are available.
While I agree in principle, adding this to highres is the wrong thing to do. This is a property of clocksources and not of high resolution timer support.
The affected clocksource is TSC and it should go there as a command line option e.g. tsc=stable, which in turn clears the CLOCK_SOURCE_MUST_VERIFY flag in the tsc clocksource.
Thanks,
tglx
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