Re: [PATCH v6 29/29] x86/tsc: Switch to perf-based hardlockup detector if TSC become unstable

2022-05-16 Thread Ricardo Neri
On Tue, May 10, 2022 at 10:14:00PM +1000, Nicholas Piggin wrote: > Excerpts from Ricardo Neri's message of May 6, 2022 10:00 am: > > The HPET-based hardlockup detector relies on the TSC to determine if an > > observed NMI interrupt was originated by HPET timer. Hence, this detector > > can no

Re: [PATCH v6 29/29] x86/tsc: Switch to perf-based hardlockup detector if TSC become unstable

2022-05-10 Thread Nicholas Piggin
Excerpts from Ricardo Neri's message of May 6, 2022 10:00 am: > The HPET-based hardlockup detector relies on the TSC to determine if an > observed NMI interrupt was originated by HPET timer. Hence, this detector > can no longer be used with an unstable TSC. > > In such case, permanently stop the