Re: Spurious DLLSC on a x4x4 NVMe

Lukas Wunner
2024-06-01T07:28:06Z

On Fri, May 31, 2024 at 02:11:56PM -0700, alan.adamson@oracle.com wrote:
> Back in 2021/2022 there where discussions about issues when hot removing a
> bifurcated x4x4 device from a x8 slot. I could not find any resolution or
> applied fix for this.
>
> https://patchwork.kernel.org/project/linux-pci/patch/20210830155628.130054-1-jonathan.derrick@linux.dev/
>
> Was there ever a resolution?

No, there wasn't.

I proposed a patch in this e-mail:

https://lore.kernel.org/linux-pci/20220924073208.GA26243@wunner.de/

...but it seems nobody actually tested it for the bifurcation use case.

Thanks,

Lukas