On Wed, Feb 09, 2022 at 02:41:02PM +0100, Blazej Kucman wrote:
> On Thu, 3 Feb 2022 09:58:04 -0600
> Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote:
> > Why were you testing with "pci=nommconf"? Do you think anybody uses
> > that with VMD and NVMe?
>
> It was added long time ago when it was useful.
I'm curious about why it was useful. It suggests a possible MMCONFIG
issue in firmware or in Linux. If it was a Linux issue, ideally we
would fix that. If it's a firmware issue, ideally we would work
around it or automatically turn on "pci=nommconf" so the user wouldn't
have to figure that out.
> Bugzilla report can be closed if you don't consider it as regression.
OK, I closed it with the details. I'm not entirely convinced that
04b12ef163d1 ("PCI: vmd: Honor ACPI _OSC on PCIe features") was the
right thing, but I'll pursue that elsewhere.
Thanks for your patience in working through this, and sorry for the
hassle it caused you.
Bjorn
