http://lkiw4tmbudbr43hbyhm636sarn73vuow77czzohdbqdpjuq3vdzvenyd.onion/article/op/2019-07-29/stable-release-hardenedbsd-stable-12-stable-v12000592
This should work fine with the existing external DRM code as long as the page wiring and unwiring is balanced. jhb (4): MFC 348210: Add a constant for the LS config MSR on AMD CPUs. MFC 339911,339936,343075,343166,348592: Various AMD CPU-specific fixes. MFC 343068: Use capsicum_helpers(3) that allow us to simplify the code and its functions will return success when the kernel is built without support of the capability mode.