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| LocutusOfBorg | hi folks, pretty please update virtualbox kernel modules for xenial? | 12:10 |
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| rtg | LocutusOfBorg, it is currently at 5.0.16-dfsg-2 - Is there some serious bug ? | 12:14 |
| LocutusOfBorg | not sure | 12:15 |
| LocutusOfBorg | kernel fixes for 4.6 | 12:15 |
| rtg | LocutusOfBorg, are you talking about the DKMS package ? | 12:16 |
| LocutusOfBorg | yes, and guest-dkms | 12:16 |
| LocutusOfBorg | uploading a new virtualbox now | 12:16 |
| rtg | ok - so the kernel team does not maintain that package. I'm mostly concerned about the in-kernel version. | 12:17 |
| LocutusOfBorg | oops | 12:18 |
| LocutusOfBorg | the dkms and guest-dkms are provided by me | 12:18 |
| LocutusOfBorg | I mean virtualbox-modules | 12:18 |
| LocutusOfBorg | and virtualbox-guest-modules | 12:18 |
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| rtg | smb, re: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1570441/comments/3 - are you saying all of those patches are relevant and should be applied as well ? | 12:29 |
| ubot5` | Launchpad bug 1570441 in linux (Ubuntu Xenial) "Kernel Panic in Ubuntu 16.04 netboot installer" [Undecided,In progress] | 12:29 |
| smb | rtg, I was before I realized that somehow the patch which is claimed to break things is unlikely applied to Xenial | 12:40 |
| rtg | smb, we do have 'x86/topology: Create logical package id' in Xenial as of -18 | 12:40 |
| smb | rtg, oh ok... was I looking at the wrong branch then? I did pull master this morning... | 12:41 |
| rtg | smb, always master-next | 12:41 |
| smb | rtg, Ok, sorry. So if we have that one we probably want the whole bunch of fixups | 12:42 |
| rtg | smb, it was applied for bug #1397880 | 12:42 |
| smb | :/ | 12:42 |
| ubot5` | bug 1397880 in intel "[Feature] Memory Bandwidth Monitoring" [Undecided,New] https://launchpad.net/bugs/1397880 | 12:42 |
| rtg | looks like it was a scaffold patch | 12:43 |
| smb | If scaffold means pretty bad, yeah | 12:43 |
| smb | Only looking at the commit messages of the follow-up it feels like a case where they realized only in hindsight how much breakage this caused | 12:44 |
| rtg | smb, well, lemme look at those other patches as well | 12:45 |
| smb | rtg, The Xen one was the only one that did not have a fixes lin in the commit. But then reading through the description I had a feeling it might still be better to proactively apply it too | 12:47 |
| rtg | smb, or I could just try to revert that topology patch and fixup the memory bandwidth monitoring code. | 12:48 |
| smb | rtg, Hm, do you think that is possible? | 12:48 |
| rtg | smb, dunno, I'll try it out. Seems like a safer move at this point | 12:49 |
| smb | rtg, I agree. If the monitoring can be made working without this it seems safer. | 12:49 |
| smb | rtg, amazing. for the amount of follow-ups this produced the change looks pretty harmless | 12:54 |
| rtg | smb, well, there is a fair bit of code movement in that patch | 12:54 |
| rtg | whoops, looking at the wrong one. | 12:55 |
| rtg | you are right, it is simple | 12:55 |
| smb | rtg, ah ok. I only saw additions | 12:55 |
| rtg | smb, it reverts cleanly, which means the compile will likely fail 'cause there is a missing function or header | 12:56 |
| smb | rtg, Right there was a new structure field and a bunch of functions in it | 12:57 |
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| rtg | smb, topology_max_packages is missing. that might be simple enough. | 12:59 |
| smb | rtg, except if the monitoring is based on assumptions about available packages... | 13:00 |
| rtg | just checking when that appeared | 13:00 |
| rtg | smb, drat, it all seems kind of interdependent | 13:02 |
| cking | that's a hairball | 13:02 |
| smb | Yeah I could imagine that bandwith monitoring is depening on some more specific topology info | 13:04 |
| smb | So lets try all currently known follow-ups and pray/hope for the best | 13:05 |
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| manjo | apw, rtg, I am looking for an Ubuntu-4.5 tag on unstable tree ... and I am not seeing one.. if I apply the 3 patches in http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5.1-wily/ will that be close enough to an Ubuntuized kernel ? | 17:00 |
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