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The Linux kernel configuration item CONFIG_MITIGATION_GDS_FORCE
:
CONFIG_CPU_SUP_INTEL
Gather Data Sampling (GDS) is a hardware vulnerability which allows unprivileged speculative access to data which was previously stored in vector registers.
This option is equivalent to setting gather_data_sampling=force on the command line. The microcode mitigation is used if present, otherwise AVX is disabled as a mitigation. On affected systems that are missing the microcode any userspace code that unconditionally uses AVX will break with this option set.
Setting this option on systems not vulnerable to GDS has no effect.
If in doubt, say N.
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