Since this seems to be upstream with 5.18-rc4, and the target kernel for
kinetic/22.10 is 5.19,
this LP bug is an SRU for jammy, impish and focal.
I've marked the affected series accordingly.
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Impish)
Importance: Undecided
Status: New
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1974017
Title:
[UBUNTU 20.04] KVM nesting support leaks too much memory, might result
in stalls during cleanup
Status in Ubuntu on IBM z Systems:
New
Status in linux package in Ubuntu:
New
Status in linux source package in Focal:
New
Status in linux source package in Impish:
New
Status in linux source package in Jammy:
New
Bug description:
KVM nesting support consumes too much memory
When running KVM with nesting support (kvm.nested=1 on the kernel command
line) the shadow page table code will produce too many entries in the shadow
code.
There is an upstream fix that will prevent the majority of the
problem:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a06afe8383080c630a7a528b8382fc6bb4925b61
The fix is needed for 20.04 and 22.04.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/1974017/+subscriptions
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