I have written a kmdf driver to activate the performance counters. I used devcon to install it after disabling driver signing during startup in Windows 10 (driver works). After restart without disabling driver signing I find "Not digitally signed" in the device manager. See picture: Driver not digitally signed
In this post: Entering Ring 0 with C++ using Visual Studio 15 jcoder suggests that one could "perhaps write a driver that enters ring 0 and then calls code passed to it. Highly insecure... but you'd only have to install the driver once."
I use DeviceIoControl() to enable the performance counters and read some msr registers. I don't understand jcoders suggestion. Is it something that would help me? How would I do it?
