Re: [RFC 0/9] PCIe Hotplug Slot Emulation driver

[Derrick, Jonathan]

On Mon, 2020-02-10 at 08:01 +0100, Christoph Hellwig wrote:
> On Fri, Feb 07, 2020 at 04:59:58PM -0700, Jon Derrick wrote:
> > This set adds an emulation driver for PCIe Hotplug. There may be platforms with
> > specific configurations that can support hotplug but don't provide the logical
> > slot hotplug hardware. For instance, the platform may use an
> > electrically-tolerant interposer between the slot and the device.
> 
> The code seems like one giant hack to me.  What is the real life
> use case for this?  Another Intel chipset fuckup like vmd or the ahci
> remapping?
> 
Exactly as the cover letter describes. An interposer being used on a
non-hotplug slot.