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feat: rephrase IBPB warning when only retpoline is enabled in non-paranoid mode

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Stéphane Lesimple 2018-04-16 09:13:04 +02:00
parent 68e619b0d3
commit 97bccaa0d7
1 changed files with 5 additions and 1 deletions
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spectre-meltdown-checker.sh
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@ -2329,7 +2329,11 @@ check_variant2_linux()
pvulnstatus $cve OK "Full retpoline + IBPB are mitigating the vulnerability"
elif [ "$retpoline" = 1 ] && [ "$retpoline_compiler" = 1 ] && [ "$retp_enabled" != 0 ] && [ "$opt_paranoid" = 0 ] && ( ! is_skylake_cpu || [ -n "$rsb_filling" ] ); then
pvulnstatus $cve OK "Full retpoline is mitigating the vulnerability"
_warn "You might want to enable IBPB to complete retpoline as a Variant 2 mitigation"
if [ -n "$cpuid_ibpb" ]; then
_warn "You should enable IBPB to complete retpoline as a Variant 2 mitigation"
else
_warn "IBPB is considered as a good addition to retpoline for Variant 2 mitigation, but your CPU microcode doesn't support it"
fi
elif [ -n "$ibrs_enabled" ] && [ -n "$ibpb_enabled" ] && [ "$ibrs_enabled" -ge 1 ] && [ "$ibpb_enabled" -ge 1 ]; then
pvulnstatus $cve OK "IBRS + IBPB are mitigating the vulnerability"
elif [ "$ibpb_enabled" = 2 ] && ! is_cpu_smt_enabled; then