peter/spectre-meltdown-checker
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spectre-meltdown-checker
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ibrs can't be enabled on no ibrs cpu (#195) 

* ibrs can't be enabled on no ibrs cpu

If the cpu is identified, and does not support SPEC_CTRL or IBRS, then ibrs can't be enabled, even if supported by the kernel.
Instead of reporting IBRS enabled and active UNKNOWN, report IBRS enabled and active NO.
This commit is contained in:
Rob Gill 2018-05-17 23:39:48 +10:00 committed by Stéphane Lesimple
parent 5cc77741af
commit 7e4899bcb8
1 changed files with 4 additions and 1 deletions
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spectre-meltdown-checker.sh
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@ -2137,7 +2137,10 @@ check_variant2_linux()
1) if [ "$ibrs_fw_enabled" = 1 ]; then pstatus green YES "for kernel space and firmware code"; else pstatus green YES "for kernel space"; fi;;
2) if [ "$ibrs_fw_enabled" = 1 ]; then pstatus green YES "for kernel, user space, and firmware code" ; else pstatus green YES "for both kernel and user space"; fi;;
3) if [ "$ibrs_fw_enabled" = 1 ]; then pstatus green YES "for kernel and firmware code"; else pstatus green YES; fi;;
*) pstatus yellow UNKNOWN;;
*) if [ ! "$cpuid_ibrs" = 'SPEC_CTRL' ] && [ ! "cpuid_ibrs" = 'IBRS_SUPPORT' ] && [ ! "cpuid_spec_ctrl" = -1 ];
then pstatus yellow NO; _debug "ibrs: known cpu not supporting SPEC-CTRL or IBRS";
else
pstatus yellow UNKNOWN; fi;;
esac
fi
else