Use \verb for the identifiers starting with "--"

lkmpg.tex

@@ -512,7 +512,7 @@ name:           hello_4
 vermagic:       5.4.0-70-generic SMP mod_unload modversions
 \end{verbatim}
 
-To overcome this problem we could resort to the \textbf{--force-vermagic} option, but this solution is potentially unsafe, and unquestionably inacceptable in production modules.
+To overcome this problem we could resort to the \verb|--force-vermagic| option, but this solution is potentially unsafe, and unquestionably inacceptable in production modules.
 Consequently, we want to compile our module in an environment which was identical to the one in which our precompiled kernel was built.
 How to do this, is the subject of the remainder of this chapter.