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Sept/Oct 2019 Issue of The NT Insider available


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Retpoline compiled driver always shows FALSE flag in MS portal

MathanMathan Member Posts: 2

We have compiled WDF KMDF Universal drivers by enabling /Qspectre flag. We tested the driver on Win10 RS5 64-bit client operating system using WHQL.

The client PC is up-to date with windows updates; The 'Get-SpeculationControlSettings' returns 'BTIKernelRetpolineEnabled' as 'TRUE'.
Since all the WHQL tests passed, we tried to submit logs for Microsoft signature.

Microsoft's Hardware Dev Center still does not mark the "Retpoline Compiled" as true.
Is there any tool or utility to check if a driver sys file is compiled with /Qspectre flag ?

Microsoft says they will be testing every binary that passes through their portal to check whether or not it was compiled with the Retpoline flag. How do they check for this flag ? Why is the flag still not set for our sys file even if we compiled with /Qspectre?

We have used the latest "EWDK for Windows 10, version 1903" to build our drivers.

Thanks & Regards,
Mathan

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