[Bug]: MTRR Default not consistent between processors.

[cfernald]

Is there an existing issue for this?

• I have searched existing issues

Current Behavior

Windows will throw debugger warnings on Q35 about MTRR_MSR_DEFAULT being different between cores.

KiInitializeMTRR: MTRR_MSR_DEFAULT is not consistent between processors.
KiInitializeMTRR: MTRR_MSR_DEFAULT is not consistent between processors.
KiInitializeMTRR: MTRR_MSR_DEFAULT is not consistent between processors.

Expected Behavior

MTRR_MSR_DEFAULT Should be consistent across processors.

Steps To Reproduce

1. use -SMP 2+
2. Enable Windows Kernel Debugger

Build Environment

- OS(s): Windows
- Tool Chain(s): VS2022
- Targets Impacted: DEBUG/RELEASE

Version Information

N/A

Urgency

Low

Are you going to fix this?

I will fix it

Do you need maintainer feedback?

No maintainer feedback needed

Anything else?

No response

[github-actions]

This issue has been automatically marked as stale because it has not had activity in 45 days. It will be closed if no further activity occurs within 7 days. Thank you for your contributions.