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KVM: Document that KVM_GET_SUPPORTED_CPUID may return emulated values

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Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity 2010-09-12 16:39:11 +02:00
parent 4c62a2dc92
commit c39cbd2a00
1 changed files with 3 additions and 2 deletions
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Documentation/kvm/api.txt
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@ -1042,8 +1042,9 @@ number is just right, the 'nent' field is adjusted to the number of valid
entries in the 'entries' array, which is then filled.
The entries returned are the host cpuid as returned by the cpuid instruction,
with unknown or unsupported features masked out. The fields in each entry
are defined as follows:
with unknown or unsupported features masked out. Some features (for example,
x2apic), may not be present in the host cpu, but are exposed by kvm if it can
emulate them efficiently. The fields in each entry are defined as follows:
function: the eax value used to obtain the entry
index: the ecx value used to obtain the entry (for entries that are