On 04/14/2017 05:17 AM, Greg KH wrote: > 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? It hasn't been reverted in Linus tree yet --- there were some changes in Xen code in 4.11 that make the revert not a mechanical operation and we are somewhat hesitant to have a patch this late in the release cycle. -boris