Yes, I'm taking out patches from 4.4 and actually do have a working 4.9 kernel along with blktap. Tested networking and disk IO in it.
There are roughly 415 patches to 4.4 out of which some ~210+ are already applied in 4.9 and ~220+ are already applied in 4.14. I dont have numbers for 4.19 yet. Essentially I'm down to single digit number of patches atm to have a working setup for kernel 4.9. I know there would be mishaps since I'm not applying all patches but my experiment is to see how close can we stay near mainline kernel + what can be the patches that kernel.org can accept. On Mon, Nov 5, 2018 at 6:19 PM Wei Liu <wei.l...@citrix.com> wrote: > I forgot to say: please don't top-post. > > On Mon, Nov 05, 2018 at 06:00:10PM +0530, Rishi wrote: > > I'm using a XenServer Host and XCP-NG on it as HVM. I used xencons=tty > > console=ttyS0 on XCP-NG dom0 kernel line, to obtain serial console. > > I'm working on to build a more recent dom0 kernel for improved support of > > Ceph in XenServer/XCP-NG. > > This is an interesting setup. I don't think you can expect to just drop > in a new kernel to XenServer/XCP-NG and then it works flawlessly. What > did you do to the patch queue XenServer carries for 4.4? > > Also, have you got a working baseline? I.e. did the stock 4.4 kernel > work? > > Wei. > > > > > > > > > On Mon, Nov 5, 2018 at 5:28 PM Wei Liu <wei.l...@citrix.com> wrote: > > > > > On Mon, Nov 05, 2018 at 05:18:43PM +0530, Rishi wrote: > > > > Yes, I'm running it in a HVM domU for development purpose. > > > > > > What is your exact setup? > > > > > > Wei. > > > > > > > > > > > On Mon, Nov 5, 2018 at 5:11 PM Wei Liu <wei.l...@citrix.com> wrote: > > > > > > > > > On Mon, Nov 05, 2018 at 04:58:35PM +0530, Rishi wrote: > > > > > > Alright, I got the serial console and following is the crash log. > > > Thank > > > > > you > > > > > > for pointing that out. > > > > > > > > > > > > [ 133.594852] watchdog: BUG: soft lockup - CPU#2 stuck for 22s! > > > > > > [ksoftirqd/2:22] > > > > > > > > > > > > [ 133.599232] Kernel panic - not syncing: softlockup: hung tasks > > > > > > > > > > > > [ 133.602275] CPU: 2 PID: 22 Comm: ksoftirqd/2 Tainted: G > > > > > > L 4.19.1 > > > > > > #1 > > > > > > > > > > > > [ 133.606620] Hardware name: Xen HVM domU, BIOS 4.4.1-xs132257 > > > > > 12/12/2016 > > > > > > > > > > Is this serial log from the host? It says it is running as a HVM > DomU. > > > > > Maybe you have mistaken guest serial log with host serial log? > > > > > > > > > > This indicates your machine runs XenServer, which has its own patch > > > > > queues on top of upstream Xen. You may also want to report to > xs-devel > > > > > mailing list. > > > > > > > > > > Wei. > > > > > > > > >
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