Re: PCIe Hotplug: NFG unless I boot with card already inserted.

Theodore Tso
2007-10-16T22:33:56Z

On Tue, Oct 16, 2007 at 02:01:16PM -0700, Kristen Carlson Accardi wrote:
> >
> > I believe the code is leaning too heavily on the BIOS for stuff,
> > and like lots of other parts of the kernel we'll need an alternate
> > strategy for when things aren't "perfect".
>
> the pitfall for forcing pciehp when the BIOS hasn't provided OSC is that
> you don't know for sure that you really have gained control of hot plug
> operation properly. You can obviously try it, using the provide forcing
> option as you have done, but the behavior is not predictable.

The bigger concern is whether this likely to break things on systems
that *do* correctly implement ACPI support for PCIe hotplug?

- Ted