RHEL-8.3 kernel disabled the Intel TSX (Transactional
Synchronization Extensions) feature by default as a preemptive
security measure, but it breaks live migration from RHEL-7.9
(or even RHEL-8.1 or RHEL-8.2) to RHEL-8.3.
Operators are expected to explicitly define the TSX flag in
their KernelArgs for the compute role to prevent live-migration
issues during the upgrade process.
This also impacts upstream CentOS systems.
Co-Authored-By: Martin Schuppert <mschuppert@redhat.com>
Related: https://bugzilla.redhat.com/1923165
Closes-Bug: #1916758
Change-Id: Icfcfb1c07bbfbe05d27d67187d941c0c34fad2b2
ede25c3e36