[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-05-10 Thread Juerg Haefliger
Leonardo, can you elaborate on the 'other possible issues'? We're hesitant to pull 18 patches into a stable kernel under the assumption that they *might* fix some *potential* issues, without clear evidence. If you can test the single-patch kernel and report back that there are still issues then

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-05-06 Thread Juerg Haefliger
Leonardo, we're evaluating the patch series for inclusion. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with aligned 2MB THB Status in The

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-04-11 Thread Juerg Haefliger
Leonardo, since you seem to have a reliable reproducer now, could you give this test kernel [1] a try? It just contains commit c066fafc595e ("KVM: PPC: Book3S HV: Use correct pagesize in kvm_unmap_radix()") and is basically what Joe gave you (comment #5) but at that time you weren't able to

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-04-10 Thread Andrew Cloke
In comment #22 above, it states that "In a meeting with lagarcia, I was informed this patch is very important, and that it is already on kernel 4.18-15 onwards." So, I assume that the required patchset(s) are already applied to the 18.04 HWE kernel, and this bug requests a backport to the bionic

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-04-08 Thread Juerg Haefliger
Stefan NACK'ed the series. For some unknown reason that email did make it into the archive so here is ist content: > Since commit fb1522e099f0 ("KVM: update to new mmu_notifier semantic > v2", 2017-08-31), the MMU notifier code in KVM no longer calls the > kvm_unmap_hva callback. This removes

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-04-08 Thread Frank Heimes
Hi Leonardo, unfortunately there was an issue with the SRU request and Juerg NACK-ed it, please have a look here: https://lists.ubuntu.com/archives/kernel-team/2019-March/099128.html Please re-submit the SRU request with the requested corrections. -- You received this bug notification because

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-04-08 Thread Manoj Iyer
** Changed in: linux (Ubuntu Bionic) Status: In Progress => Incomplete ** Changed in: linux (Ubuntu) Status: In Progress => Incomplete ** Changed in: ubuntu-power-systems Status: In Progress => Incomplete -- You received this bug notification because you are a member of

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-03-26 Thread Frank Heimes
** Changed in: linux (Ubuntu Bionic) Status: Confirmed => In Progress ** Changed in: linux (Ubuntu) Status: Confirmed => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-03-26 Thread Andrew Cloke
** Changed in: ubuntu-power-systems Status: Confirmed => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with aligned 2MB THB

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-02-28 Thread Leonardo Brás
** Attachment added: "patches.tar.gz" https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1788098/+attachment/5242393/+files/patches.tar.gz ** Changed in: linux (Ubuntu Bionic) Status: New => Confirmed -- You received this bug notification because you are a member of Kernel Packages,

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-02-26 Thread Leonardo Brás
ProblemType: Bug AlsaDevices: total 0 crw-rw 1 root audio 116, 1 Feb 26 08:00 seq crw-rw 1 root audio 116, 33 Feb 26 08:00 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu7.5 Architecture: ppc64el ArecordDevices: Error:

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-02-26 Thread Andrew Cloke
...or perhaps I've misunderstood. Are the patches listed in comment #23 the complete set required to resolve the issue (with no complex backporting required)? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-02-26 Thread Andrew Cloke
In comment #22, you mentioned working on a backport of these patches to the Ubuntu 4.15 kernel. Was this successful? Is it possible to attach the backported patchsets to this bug? ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Changed in: ubuntu-power-systems

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-02-25 Thread Frank Heimes
** Changed in: linux (Ubuntu Bionic) Status: Invalid => New ** Changed in: linux (Ubuntu) Status: Invalid => New ** Changed in: ubuntu-power-systems Status: Invalid => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-02-25 Thread Christian Ehrhardt 
Thanks for all your effort Leonardo, that seems to make the bug valid again, but I'll leave that to JFH/Manoj to resurrect it and make it a proper kernel bug as it seems there now is a way to test it (at least you can do so) and a set of patches. I can not speak for the ack/nack of those

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-01-24 Thread Joseph Salisbury
** Changed in: linux (Ubuntu) Assignee: Joseph Salisbury (jsalisbury) => (unassigned) ** Changed in: linux (Ubuntu Bionic) Assignee: Joseph Salisbury (jsalisbury) => (unassigned) ** Changed in: linux (Ubuntu Cosmic) Assignee: Joseph Salisbury (jsalisbury) => (unassigned) -- You

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-01-24 Thread Christian Ehrhardt 
Thanks for your continuous efforts on this Leonardo, I have no further suggestion. I think to stay on the safe side we will keep everything as-is for now. I'd say it is IBMs call to decide between this now: a) Speed: Call 1781526 unblocked by the evaluation here. We'd re-consider SRUing that

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-01-07 Thread Andrew Cloke
** Changed in: ubuntu-power-systems Status: Incomplete => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with aligned 2MB THB

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2019-01-07 Thread Christian Ehrhardt 
Hi Leonardo, thanks for your efforts trying to verify that. Given that you couldn't trigger it I wonder what to do. Currently it is incomplete waiting for such a test, but as it seems to elude you I'd suggest we call the bug invalid until we would know otherwise. For the related bug 1781526 I

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-12-11 Thread Joseph Salisbury
** Changed in: linux (Ubuntu) Importance: Critical => Medium ** Changed in: linux (Ubuntu Bionic) Importance: Critical => Medium ** Changed in: linux (Ubuntu Cosmic) Importance: Critical => Medium -- You received this bug notification because you are a member of Kernel Packages, which

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-12-06 Thread Andrew Cloke
After discussions with IBM, reducing the priority. ** Changed in: ubuntu-power-systems Importance: Critical => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title:

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-11-29 Thread Andrew Cloke
** Tags removed: triage-a ** Tags added: triage-r -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with aligned 2MB THB Status in The

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-11-29 Thread  Christian Ehrhardt 
Nothing yet happened here. I also declared the related qemu fix that is blocked by this as incomplete. @manoj/jfh - maybe time for triage-r here? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-11-12 Thread Andrew Cloke
Marking as incomplete while awaiting the IBM testing assistance described in comment #6. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-10-01 Thread Manoj Iyer
** Changed in: ubuntu-power-systems Status: In Progress => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with aligned 2MB THB

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-09-24 Thread Manoj Iyer
** Tags removed: triage-g ** Tags added: triage-a -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with aligned 2MB THB Status in The

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-31 Thread Andrew Cloke
** Changed in: ubuntu-power-systems Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with aligned 2MB THB Status

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-30 Thread bugproxy
** Tags removed: targetmilestone-inin--- ** Tags added: targetmilestone-inin1804 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title: Avoid migration issues with aligned 2MB

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-30 Thread bugproxy
--- Comment From jhop...@us.ibm.com 2018-08-30 10:29 EDT--- Thanks, I've asked for some testing assistance from our KVM team but will note here some of the details from the original report of this problem.. repro steps are just a simple local host migration. ..they later noted that

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-22 Thread Joseph Salisbury
I built a test kernel with the following patch: KVM: PPC: Book3S HV: Use correct pagesize in kvm_unmap_radix() The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1788098 Can you test this kernel and see if it resolves this bug? Note about installing test kernels: •

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-22 Thread Joseph Salisbury
** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu Cosmic) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu Bionic) Importance: Medium => Critical ** Changed in: linux (Ubuntu

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-22 Thread Manoj Iyer
** Changed in: ubuntu-power-systems Assignee: Canonical Kernel Team (canonical-kernel-team) => bugproxy (bugproxy) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098 Title:

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-21 Thread  Christian Ehrhardt 
** Description changed: + FYI: This blocks bug 1781526 - once this one here is resolved we can go + on with SRU considerations for 1781526 + --- Comment From jhop...@us.ibm.com 2018-08-20 17:12 EDT--- - Hi, in some environments it was observed that this qemu patch to enable THP made

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-21 Thread Andrew Cloke
** Also affects: qemu Importance: Undecided Status: New ** No longer affects: qemu ** Also affects: ubuntu-power-systems Importance: Undecided Status: New ** Changed in: ubuntu-power-systems Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) **

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-21 Thread  Christian Ehrhardt 
For this particular case the log files are not needed and/or applicable. After discussing in #stable-kernel I set it to confirmed. ** Changed in: linux (Ubuntu Bionic) Status: New => Confirmed ** Changed in: linux (Ubuntu Cosmic) Status: Incomplete => Confirmed -- You received

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-21 Thread  Christian Ehrhardt 
FYI: this is essentially an IBM request, reverse mirroring will happen at some point, but I wanted to make you aware right now -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1788098

[Kernel-packages] [Bug 1788098] Re: Avoid migration issues with aligned 2MB THB

2018-08-20 Thread  Christian Ehrhardt 
Oh, I just realized while initially reported against qemu in bug 1781526 that this is a kernel, and not a qemu patch. That spreads the timeline a bit: - this should be in Cosmic before Release to avoid issues due to the fix of 1781526. - since that is kind of short I'll bump priority there. -