Re: [PATCH v2 2/3] nestedsvm: Disable TscRateMSR

2024-03-18 Thread Jan Beulich
On 13.03.2024 13:24, George Dunlap wrote: > The primary purpose of TSC scaling, from our perspective, is to > maintain the fiction of an "invariant TSC" across migrates between > platforms with different clock speeds. > > On AMD, the TscRateMSR CPUID bit is unconditionally enabled in the > "host

[PATCH v2 2/3] nestedsvm: Disable TscRateMSR

2024-03-13 Thread George Dunlap
The primary purpose of TSC scaling, from our perspective, is to maintain the fiction of an "invariant TSC" across migrates between platforms with different clock speeds. On AMD, the TscRateMSR CPUID bit is unconditionally enabled in the "host cpuid", even if the hardware doesn't actually support