Re: [stable-4.9: PATCH] xen: revert commit 72a9b186292

[Greg KH]

On Thu, Apr 13, 2017 at 03:06:53PM +0200, Juergen Gross wrote:
> Revert commit 72a9b186292 ("xen: Remove event channel notification
> through Xen PCI platform device") as the original analysis was wrong
> that all the removed code isn't in use any more.
> 
> It is still necessary for old Xen versions (< 4.0) and for being able
> to run the Linux kernel as dom0 in a nested Xen environment.

What is the commit id of this revert in Linus's tree?

thanks,

greg k-h