Messages in this thread | | | Subject | Re: [Xen-devel] [PATCH net-next] xen-netback: get rid of old udev related code | From | Jürgen Groß <> | Date | Fri, 13 Dec 2019 06:40:38 +0100 |
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On 12.12.19 20:05, David Miller wrote: > From: Paul Durrant <pdurrant@amazon.com> > Date: Thu, 12 Dec 2019 13:54:06 +0000 > >> In the past it used to be the case that the Xen toolstack relied upon >> udev to execute backend hotplug scripts. However this has not been the >> case for many releases now and removal of the associated code in >> xen-netback shortens the source by more than 100 lines, and removes much >> complexity in the interaction with the xenstore backend state. >> >> NOTE: xen-netback is the only xenbus driver to have a functional uevent() >> method. The only other driver to have a method at all is >> pvcalls-back, and currently pvcalls_back_uevent() simply returns 0. >> Hence this patch also facilitates further cleanup. >> >> Signed-off-by: Paul Durrant <pdurrant@amazon.com> > > If userspace ever used this stuff, I seriously doubt you can remove this > even if it hasn't been used in 5+ years.
Hmm, depends.
This has been used by Xen tools in dom0 only. If the last usage has been in a Xen version which is no longer able to run with current Linux in dom0 it could be removed. But I guess this would have to be a rather old version of Xen (like 3.x?).
Paul, can you give a hint since which Xen version the toolstack no longer relies on udev to start the hotplug scripts?
Juergen
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