Hi Dmitry,

On 5/26/2021 2:01 PM, Dmitry Kozlyuk wrote:

quoted

WPP tracing [1] allows kernel drivers to print logs that can be viewed
without attaching a debugger to the running system. Traces are colelcted
only when enabled. Instrument virt2phys with traces:
* ERROR:   failures that prevent the driver from working.
* WARNING: incorrect calls to the driver.
* INFO:    starting or completing operations with memory.

[1]: 
https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/wpp-software-tracing

Signed-off-by: Dmitry Kozlyuk <redacted>
---
<snip!>

diff --git a/windows/virt2phys/virt2phys.vcxproj 

b/windows/virt2phys/virt2phys.vcxproj

quoted

index b462493..c9f884a 100644

--- a/windows/virt2phys/virt2phys.vcxproj
+++ b/windows/virt2phys/virt2phys.vcxproj

@@ -41,6 +41,7 @@

    <ItemGroup>
      <ClInclude Include="virt2phys.h" />
      <ClInclude Include="virt2phys_logic.h" />
+    <ClInclude Include="virt2phys_trace.h" />
    </ItemGroup>
    <ItemGroup>
      <Inf Include="virt2phys.inf" />

@@ -169,9 +170,9 @@

    </ItemDefinitionGroup>
    <ItemDefinitionGroup 
Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
      <ClCompile>
-      <WppEnabled>false</WppEnabled>
+      <WppEnabled>true</WppEnabled>
<WppRecorderEnabled>true</WppRecorderEnabled>
-      <WppScanConfigurationData 
Condition="'%(ClCompile.ScanConfigurationData)' == 
''">trace.h</WppScanConfigurationData>
+      <WppScanConfigurationData 
Condition="'%(ClCompile.ScanConfigurationData)' == 
''">virt2phys_trace.h</WppScanConfigurationData>

This change is also required for the 'Release|x64' configuration, 
otherwise 'Release' builds fail.

<snip!>

Also, it appears the newer version of the compiler (combined with the 
new version of WDK/SDK), requires that the driver signing process 
mandate a File Digest Algorithm (using the /fd option). It is a 
warning today, but they claim it could become a requirement in the 
future.

To fix this, we can include the following in the project file:

<DriverSign>
  <FileDigestAlgorithm>SHA256</FileDigestAlgorithm>
</DriverSign>

Or set the above, using project 'Properties'->Driver Signing->File 
Digest Algorithm = 256.