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fix: bypass MSR/CPUID checks for non-x86 CPUs

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This commit is contained in:
Stéphane Lesimple 2018-03-17 16:13:37 +01:00
parent 701cf882ad
commit 37ce032888
1 changed files with 10 additions and 2 deletions
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12
spectre-meltdown-checker.sh
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@ -1126,6 +1126,10 @@ check_cpu()
{ {
_info "\033[1;34mHardware check\033[0m" _info "\033[1;34mHardware check\033[0m"
if ! uname -m | grep -qwE 'x86_64|i[3-6]86'; then
return
fi
_info "* Hardware support (CPU microcode) for mitigation techniques" _info "* Hardware support (CPU microcode) for mitigation techniques"
_info " * Indirect Branch Restricted Speculation (IBRS)" _info " * Indirect Branch Restricted Speculation (IBRS)"
_info_nol " * SPEC_CTRL MSR is available: " _info_nol " * SPEC_CTRL MSR is available: "
@ -1369,7 +1373,10 @@ check_cpu()
else else
pstatus blue NO "$ucode_found" pstatus blue NO "$ucode_found"
fi fi
}
check_cpu_vulnerabilities()
{
_info "* CPU vulnerability to the three speculative execution attacks variants" _info "* CPU vulnerability to the three speculative execution attacks variants"
for v in 1 2 3; do for v in 1 2 3; do
_info_nol " * Vulnerable to Variant $v: " _info_nol " * Vulnerable to Variant $v: "
@ -1379,8 +1386,6 @@ check_cpu()
pstatus green NO pstatus green NO
fi fi
done done
_info
} }
check_redhat_canonical_spectre() check_redhat_canonical_spectre()
@ -2024,6 +2029,9 @@ check_variant3()
} }
check_cpu check_cpu
check_cpu_vulnerabilities
_info
# now run the checks the user asked for # now run the checks the user asked for
if [ "$opt_variant1" = 1 ] || [ "$opt_allvariants" = 1 ]; then if [ "$opt_variant1" = 1 ] || [ "$opt_allvariants" = 1 ]; then
check_variant1 check_variant1