jkim 3b56923bc2 Detect VMware guest and set the TSC frequency as reported by the hypervisor.
VMware products virtualize TSC and it run at fixed frequency in so-called
"apparent time".  Although virtualized i8254 also runs in apparent time, TSC
calibration always gives slightly off frequency because of the complicated
timer emulation and lost-tick correction mechanism.
2011-04-29 18:20:12 +00:00
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