VirtualBox

Ticket #14099 (closed defect: wontfix)

Opened 7 years ago

Last modified 7 years ago

MSR_PKG_C[8-10]_RESIDENCY are not provided with Haswell-ULT host CPU

Reported by: yarda Owned by:
Component: other Version: VirtualBox 4.3.26
Keywords: Cc:
Guest type: other Host type: other

Description (last modified by ramshankar) (diff)

MSR implementation under VirtualBox is quite usable, but the following MSRs are not provided if running on Haswell-ULT host CPU (e.g. CPU model number 0x45):

MSR_PKG_C8_RESIDENCY, MSR register 0x630
MSR_PKG_C9_RESIDENCY, MSR register 0x631
MSR_PKG_C10_RESIDENCY, MSR register 0x632

This may crash applications depending on these MSRs as they should be supported according to CPU model number. Currently PowerTOP is known to crash if running in guest using Haswell-ULT host CPU.

Change History

comment:1 Changed 7 years ago by ramshankar

  • Description modified (diff)

comment:2 Changed 7 years ago by frank

  • Status changed from new to closed
  • Resolution set to wontfix

I don't think that we will fix this in the foreseeable future. I don't see why it would be useful to pass numbers about processor C states into the VM...

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