Virtualization-based security is supported on Enterprise and Server editions of Windows. Enable virtualization-based isolation for Code Integrity Forthcoming updates to driver verifier will not flag the INIT section. However, if this is the only issue you can ignore this issue and hit go past this in the kernel debugger as this will not cause any compatibility issues with this feature. To choose this option if using the verifier GUI, choose Create custom settings (for code developers), choose Next, and then choose Code integrity checks.ĭrivers built with older versions of Visual Studio will fail on the INIT section being WRX. To enable this from the command line, use the following command: verifier.exe /flags 0x02000000 /driver Run the HyperVisor Code Integrity Readiness Test in the Windows HLK.ĭriver Verifier has a new Code Integrity option flag (0x02000000) to enable extra checks that validate compliance with this feature.Test the driver on a system with virtualization-based isolation of Code Integrity enabled.Use Driver Verifier with the new Code Integrity compatibility checks enabled.There are four steps to verify driver compatibility: Use the latest version of the WDK and Visual Studio to produce compatible drivers when using default settings. Section Alignment must be a multiple of 0x1000 (PAGE_SIZE).Don't attempt to directly modify executable system memory.Don't use sections that are both writable and executable.Use NX APIs/flags for memory allocation - NonPagedPoolNx.Since memory pages and sections can never be writable and executable, the first step is to ensure a clear separation of data and code and not to attempt to directly modify code pages. This means that kernel memory pages can never be Writable and Executable (W+X) and executable code cannot be directly modified. When using virtualization-based security to isolate Code Integrity, the only way kernel memory can become executable is through a Code Integrity verification. Hypervisor-Protected Code Integrity can use hardware technology and virtualization to isolate the Code Integrity (CI) decision-making function from the rest of the Windows operating system.
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