Re: current boot failure on NVME with and after 8e9fe9996a1f

On Thu, Aug 13, 2026 at 12:51 PM Michael Butler
<imb@protected-networks.net> wrote:
>
> On a Dell Latitude 5540 with two NVME disks, the last working commit
> from bisection is a9752e9ac8a6.
>
> Anything beyond this fails on start up with ..
>
> d5540 kernel: nvme1: Resetting controller due to a timeout.
> d5540 kernel: nvme1: event="start"
> d5540 kernel: nvme1: event="success"
> d5540 kernel: nvme1: aborting outstanding i/o
> d5540 kernel: nvme1: done aborting outstanding i/o
>
> It seems that the PCI changes don't work for disks attached in this
> manner ..

Hi Michael,

I think the regression is 8e9fe9996a1f instead, specific to Intel VMD
attached devices, which synthesize a virtual pcie endpoint.

Can you try this on the failing kernel from the bootloader?
set hw.pci.enable_mps_tune=0
boot

And then try this patch (without setting the bootloader option):
https://reviews.freebsd.org/D58837

Regards,
Kevin