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.
- This has to be in Bionic before a fix for bug 1781526 (I'll wait with a qemu
change until this one is complete)
I'm marking the qemu task invalid (no action there other than to track
the Bionic release of this which will finally unblock the SRU of bug
1781526 to Bionic).
I'm adding a kernel task to reflect that this is a kernel change that is needed.
Finally I'm adding a Cosmic and Bionic Task.
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: qemu (Ubuntu)
Status: New => Invalid
** Also affects: qemu (Ubuntu Cosmic)
Importance: Undecided
Status: Invalid
** Also affects: linux (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also affects: qemu (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** No longer affects: qemu (Ubuntu Bionic)
** No longer affects: qemu (Ubuntu Cosmic)
** Changed in: linux (Ubuntu Cosmic)
Importance: Undecided => Critical
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => Medium
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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 linux package in Ubuntu:
New
Status in qemu package in Ubuntu:
Invalid
Status in linux source package in Bionic:
New
Status in linux source package in Cosmic:
New
Bug description:
------- Comment From [email protected] 2018-08-20 17:12 EDT-------
Hi, in some environments it was observed that this qemu patch to enable THP
made it more likely to hit guest migration issues, however the following kernel
patch resolves those migration issues:
https://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc.git/commit/?h=kvm-ppc-next&id=c066fafc595eef5ae3c83ae3a8305956b8c3ef15
KVM: PPC: Book3S HV: Use correct pagesize in kvm_unmap_radix()
Once merged upstream, it would be good to include that change as well
to avoid potential migration problems. Should I open a new bug for
that or is it better to track here?
Note Paelzer: I have not seen related migration issues myself, but it
seems reasonable and confirmed by IBM.
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