On 06/30/16 16:24, Brian J. Johnson wrote:
> On 06/30/2016 08:07 AM, Laszlo Ersek wrote:

>> - Does PCIe hotplug into downstream ports work with any (phys) firmware
>>    forked from edk2? Brian, Samer, do you guys have experience with this?
> 
> Yes, we support it on our UV server line.  Physically, hotplug is only
> possible in expansion chassis designed for that purpose.  (That's not a
> problem with virtual machines, of course.)  But we've had to do quite a
> bit of work on the host bridge driver to allowing scaling to the sizes
> of systems we support (hundreds of sockets and PCIe slots, dozens of TB
> of RAM), including reserving resources for hotplug only in the specific
> cases where it's possible.

Thanks a lot for your answer! Could you perhaps check for me if your
platform firmware implements EFI_PCI_HOT_PLUG_INIT_PROTOCOL, highlighted
by Andrew?

Thanks!
Laszlo

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