Ubuntu commit 8bf5a702a8a3 ("UBUNTU: [Config] updateconfigs for DIMLIB")
enables CONFIG_DIMLIB and wires it up to the mellanox/broadcom/ena
drivers. Since none of the options for KVM select this, leave it off.
UBUNTU: [Config] Disable TSX by default when possible
Turn on CONFIG_X86_INTEL_TSX_MODE_OFF to disable Intel's Transactional
Synchronization Extensions (TSX) feature by default. TSX can only be
disable on certain, newer processors that support the IA32_TSX_CTRL MSR
via a microcode update. Intel says that future processors will also
support the MSR. On processors that support the MSR, TSX will be
disabled unless the system administrator overrides the configuration
with the "tsx" kernel command line option.