CONFIG_MITIGATION_IBPB_ENTRY is not available for the selected architecture x86.
Result is shown for architecture x86 or 64BIT
Enable IBPB on kernel entry
configname: CONFIG_MITIGATION_IBPB_ENTRY
Linux Kernel Configuration
└─>Mitigations for CPU vulnerabilities
└─>Enable IBPB on kernel entry
In linux kernel since version 4.19.314 (release Date: 2024-05-17)
Compile the kernel with support for the retbleed=ibpb and
spec_rstack_overflow={ibpb,ibpb-vmexit} mitigations.
spec_rstack_overflow={ibpb,ibpb-vmexit} mitigations.