The test kernel in comment #13 was built on top of Ubuntu-3.13.0-76.120. It had the 7 commits listed in comment #18 applied. It did not have the performance regression per comment #14.
The test kernel in comment #19 was built on top of Ubuntu-3.13.0-78.122 I had the 7 commits listed in comment #19 reverted, but it also had the 3.13.11-ckt34 stable updates applied. It still had the regression per comment #28. This may indicated the regression came in via one of the upstream stable updates. I'd like to perform a kernel bisect between Ubuntu-3.13.0-76.120 and Ubuntu-3.13.0-78.122. However, we first need to make sure Ubuntu-3.13.0-76.120 does not have the performance regression and Ubuntu-3.13.0-78.122 does have the regression. Can you test these two kernels for confirmation. Once we have the results, we can start the bisect or decide on the next step: Ubuntu-3.13.0-76.120: https://launchpad.net/~canonical-kernel-security- team/+archive/ubuntu/ppa/+build/8865557 Ubuntu-3.13.0-78.122: https://launchpad.net/~canonical-kernel- team/+archive/ubuntu/ppa/+build/8926054 Note, you need to install both the linux-image and linux-image-extra .deb packages. In parallel, I will still build you a test kernel with the original 7 commits and commit 757647e applied. I'm in the process of identifying all the prereqs and backporting. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1519897 Title: [Hyper-V] hv: vmbus: Fix a host signaling bug To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1519897/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
