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KVM: Document that KVM_GET_SUPPORTED_CPUID may return emulated values
Signed-off-by: Avi Kivity <avi@redhat.com>
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@ -1042,8 +1042,9 @@ number is just right, the 'nent' field is adjusted to the number of valid
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entries in the 'entries' array, which is then filled.
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entries in the 'entries' array, which is then filled.
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The entries returned are the host cpuid as returned by the cpuid instruction,
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The entries returned are the host cpuid as returned by the cpuid instruction,
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with unknown or unsupported features masked out. The fields in each entry
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with unknown or unsupported features masked out. Some features (for example,
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are defined as follows:
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x2apic), may not be present in the host cpu, but are exposed by kvm if it can
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emulate them efficiently. The fields in each entry are defined as follows:
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function: the eax value used to obtain the entry
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function: the eax value used to obtain the entry
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index: the ecx value used to obtain the entry (for entries that are
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index: the ecx value used to obtain the entry (for entries that are
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