RtlHashBytes2

INT64 __fastcall RtlHashBytes2(const UINT8 *a1, UINT64 a2){
  INT64 v3; 
  v3 = 0i64;
  MetroHash64::Hash(a1, a2, (unsigned __int8 *const)&v3);
  return v3;
}

Referenced by:

MiFindUserSidHotPatchContext
MiLoadHotPatchForUserSid