Linux 3.18 no longer boots under Xen.
This has been true for over half a year. The Xen project CI has been sending automatic mails including bisection reports (see below). I emailed Xen kernel folks and got no takers for fixing this.
Unless this is fixed soon, or at least someone shows some inclination to investigate this regression, I intend to drop all testing of this "stable" branch. It has rotted and no-one is fixing it.
*** Found and reproduced problem changeset ***
Bug is in tree: linux
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
Bug introduced: 6b1ae527b1fdee86e81da0cb26ced75731c6c0fa Bug not present: ba6984fc0162f24a510ebc34e881b546b69c553b Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/136574/
It seems that there is something wrong with the IGB driver.
Additionally, Jan Beulich writes:
Which in turn reminds me of a patch of mine that was backported (and spotted by an earlier bisection), and that I've suggested (twice already iirc) was either backported in error, or without some further necessary changes. Iirc the stable tree maintainer for that branch was Cc-ed back then, and if so I'd conclude he doesn't care.
Thanks, Ian.