Messages in this thread | | | Date | Tue, 9 Jun 2015 10:15:31 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [PATCH 1/1] x86 TSC: set X86_FEATURE_TSC_RELIABLE, per CPUID |
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On Mon, 8 Jun 2015, Andy Lutomirski wrote: > On Wed, Jun 3, 2015 at 12:03 PM, Len Brown <lenb@kernel.org> wrote: > > If you boot this machine with "tsc=reliable", to disable the cpu_up > > check_tsc_sync, > > what happens? Does the run-time clocksource code detect the bogus TSC values? > > If yes, how long does that take? > > They didn't detect it in the time I watched it.
Which is not surprising as the run-time check is disabled with the reliable flag as well.
if (tsc_clocksource_reliable) clocksource_tsc.flags &= ~CLOCK_SOURCE_MUST_VERIFY;
Thanks,
tglx
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