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feat(arm): adjust vulnerable ARM CPUs for variant3a and variant4

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This commit is contained in:
Stéphane Lesimple 2018-05-22 09:19:29 +02:00
parent c6ee0358d1
commit 725eaa8bf5
1 changed files with 11 additions and 2 deletions
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13
spectre-meltdown-checker.sh
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@ -365,14 +365,23 @@ is_cpu_vulnerable()
variant3a=vuln
else
_debug "checking cpu$i: this arm non vulnerable to variant3a"
[ -z "$variant3" ] && variant3a=immune
[ -z "$variant3a" ] && variant3a=immune
fi
# for variant4, only A57-72-73-75 are vulnerable
if [ "$cpuarch" = 8 ] && echo "$cpupart" | grep -Eq '^0xd0[789a]$'; then
_debug "checking cpu$i: arm A57-A72-A73-A75 vulnerable to variant4"
variant4=vuln
else
_debug "checking cpu$i: this arm non vulnerable to variant4"
[ -z "$variant4" ] && variant4=immune
fi
fi
_debug "is_cpu_vulnerable: for cpu$i and so far, we have <$variant1> <$variant2> <$variant3> <$variant3a> <$variant4>"
done
fi
# from the information we have for now, it seems that CPUs that are vulnerable to variant1 are also vulnerable to variant4
variant4=$variant1
[ -z "$variant4" ] && variant4=$variant1
_debug "is_cpu_vulnerable: temp results are <$variant1> <$variant2> <$variant3> <$variant3a> <$variant4>"
# if at least one of the cpu is vulnerable, then the system is vulnerable
[ "$variant1" = "immune" ] && variant1=1 || variant1=0