There's a merged pull request on the void-packages repository

linux5.x: Enable DRM_AMDGPU_USERPTR and HMM_MIRROR
https://github.com/void-linux/void-packages/pull/21121

Description:
`DRM_AMDGPU_USERPTR` is enabled in all Void kernel configs for `i686` and `x86_64` in Linux 4.x, but not in 5.x. The `*_USERPTR` options are enabled in 5.x for the `i915` and `radeon` drivers.
The `HMM_MIRROR` option in Linux 5.x is selected when enabling `DRM_AMDGPU_USERPTR`, so this option comes along for the ride.

Both options will be required to support some AMD ROCm packages I'm hoping to prepare and submit in the near future.

These options are currently enabled for `ppc64*` across all versions of the kernel in packaged in Void, so these changes also improve consistency of configurations.

Travis will absolutely timeout building these kernels, so I'm skipping CI.