Update README.md

README.md

@@ -11,4 +11,6 @@ This project uses WDK and thus Windows Kernel functions to facilitate vmxlaunch.
 ### VMCS
 
 Dump of VMCS control fields can be found [here](https://githacks.org/_xeroxz/bluepill/-/blob/master/VMCS.md). This is not required, but for learning its nice to
-see exactly what the MSR masks are, and what VMCS field's there are.
+see exactly what the MSR masks are, and what VMCS field's there are. When I first configured the VMCS control field(s), I was setting whatever bits I thought I needed high after 
+applying VMX reserved bit masks. This was causing vmxerror #7 (control field misconfiguration). Also I found out my xeons dont support xsave, nor do they 
+support [processor tracing](https://software.intel.com/content/www/us/en/develop/blogs/processor-tracing.html).