CRx Register got reset during Context Switch

[niwow]

Hi, Recently I read some stories about "exploiting-capcom-safely", I tried to find what Windows do to CR4. I searched disassembled ntoskrnl.exe in ida, but i didn't find Any Reset Action. Could you please tell where exactly CR4 got reset during Context Switch?

[niwow]

And i did find the function "KiSaveInitialProcessorControlState/KiSaveProcessorControlState" that saved the CRx Registers.