TSC and multiple CPUs

Posted Oct 17, 2014 15:49 UTC (Fri) by ntl (subscriber, #40518)
In reply to: Implementing virtual system calls by kjp
Parent article: Implementing virtual system calls

I think some older CPUs have issues with TSC sync, which the kernel detects and works around by using a different clocksource like HPET (and the vDSO on x86 has different routines for different clocksources).