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Update amd x86_64 cpu features #5314

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Merged
merged 2 commits into from
Jul 18, 2025
Merged

Update amd x86_64 cpu features #5314

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b793bd6
fix: update AMD host cpu features checks
ShadowCurse Jul 18, 2025
568cf02
fix: add MSR_TSC_RATE to the MSR_EXCEPTION_LIST
ShadowCurse Jul 18, 2025
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10 changes: 3 additions & 7 deletions tests/integration_tests/functional/test_cpu_features_host_vs_guest.py
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Original file line number Diff line number Diff line change
Expand Up @@ -120,6 +120,9 @@
"vgif",
"vmcb_clean",
"wdt",
"npt",
"nrip_save",
"svm",
}

AMD_GUEST_ONLY_FEATS = {
Expand All @@ -130,14 +133,7 @@
}

AMD_MILAN_HOST_ONLY_FEATS_6_1 = AMD_MILAN_HOST_ONLY_FEATS - {
"lbrv",
"pausefilter",
"pfthreshold",
"sme",
"tsc_scale",
"v_vmsave_vmload",
"vgif",
"vmcb_clean",
} | {"brs", "rapl", "v_spec_ctrl"}

AMD_GENOA_HOST_ONLY_FEATS = AMD_MILAN_HOST_ONLY_FEATS | {
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7 changes: 6 additions & 1 deletion tests/integration_tests/functional/test_cpu_template_helper.py
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Expand Up @@ -177,7 +177,8 @@ def build_cpu_config_dict(cpu_config_path):
}


# List of MSR indices that should not be tested due to its mutability.
# List of MSR indices that should not be tested due to its mutability or inavailablility
# in the guest.
MSR_EXCEPTION_LIST = [
# MSR_KVM_WALL_CLOCK and MSR_KVM_SYSTEM_TIME depend on the elapsed time.
0x11,
Expand Down Expand Up @@ -232,6 +233,10 @@ def build_cpu_config_dict(cpu_config_path):
# MSR_AMD64_VIRT_SPEC_CTRL is R/W and can be modified by OS to control
# security features for speculative attacks.
0xC001011F,
# Not available in the guest
# MSR_TSC_RATE is a Time Stamp Counter Ratio which allows the hypervisor
# to control the guest's view of the Time Stamp Counter.
0xC0000104,
]


Expand Down