KVM: Document MCE banks non-exposure via KVM_GET_MSR_INDEX_LIST
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/Documentation/kvm/api.txt b/Documentation/kvm/api.txt
index d9b00f1..179cc51 100644
--- a/Documentation/kvm/api.txt
+++ b/Documentation/kvm/api.txt
@@ -126,6 +126,10 @@
kvm adjusts nmsrs to reflect the actual number of msrs and fills in
the indices array with their numbers.
+Note: if kvm indicates supports MCE (KVM_CAP_MCE), then the MCE bank MSRs are
+not returned in the MSR list, as different vcpus can have a different number
+of banks, as set via the KVM_X86_SETUP_MCE ioctl.
+
4.4 KVM_CHECK_EXTENSION
Capability: basic