Re: [REGRESSION][BISECTED] "xHCI host controller not responding, assume dead" on stable kernel > 6.8.7

Limonciello, Mario
2024-05-21T10:53:00Z

>> I still don't understand why this happened as it was working great for
>> years and is still working with kernels 6.8.7 or older. But
>> nevertheless sorry if I wasted time of anyone because of broken
>> hardware.
>
> I think the BIOS CM creates the "first" tunnel using reduced
> capabilities already so this makes the "second" tunnel fit there in the
> 18G link. Now that we do the reset the "first" tunnel is re-created with
> max capabilities and that makes the "second" not to fit there anymore.
>
> But now you get the full 40G link :)

Well that's awesome! That confirms there were other issues besides the
one Sanath found that get fixed by not reusing BIOS tunnels.