Updating status to Fix Released, since a kernel 6.8 version has landed in
noble-release:
linux-generic | 6.8.0-11.11+1 | noble | amd64, arm64, armhf, ppc64el, s390x
** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
** Changed in: ubuntu-z-systems
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2027926
Title:
[24.04 FEAT] [VS2308] KVM: Implement counters for nested guest shadow
events
Status in Ubuntu on IBM z Systems:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Bug description:
Guest-3 memory needs to be represented by shadow page tables in the
Guest-1 hypervisor. These shadow tables are discarded in certain
conditions and need to be rebuilt in consequence, which negatively
impacts the nested guest's performance. KVM performance counters for
the shadow/unshadow events can help to diagnose performance issues.
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