Also, a lot of the XHCI hardware is itself buggy. Linux has so many workarounds for different issues with XHCI host controllers that they had to increase the fl

Also, a lot of the XHCI hardware is itself buggy. Linux has so many workarounds for different issues with XHCI host controllers that they had to increase the flags variable indicating which needed to be enabled to 64 bits because they'd run out of bits: https://patchwork.kernel.org/patch/10421969/ https://patchwork.kernel.org/patch/10421969/