peter/spectre-meltdown-checker
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chore: only attempt to load msr and cpuid module once

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Stéphane Lesimple 2022-03-20 00:55:49 +01:00
parent ba131fcd2f
commit 3679776f3c
1 changed files with 8 additions and 0 deletions
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8
spectre-meltdown-checker.sh
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@ -1413,6 +1413,10 @@ mount_debugfs()
load_msr() load_msr()
{ {
# only attempt to do it once even if called multiple times
[ "$load_msr_once" = 1 ] && return
load_msr_once=1
if [ "$os" = Linux ]; then if [ "$os" = Linux ]; then
if ! grep -qw msr "$procfs/modules" 2>/dev/null; then if ! grep -qw msr "$procfs/modules" 2>/dev/null; then
modprobe msr 2>/dev/null && insmod_msr=1 modprobe msr 2>/dev/null && insmod_msr=1
@ -1432,6 +1436,10 @@ load_msr()
load_cpuid() load_cpuid()
{ {
# only attempt to do it once even if called multiple times
[ "$load_cpuid_once" = 1 ] && return
load_cpuid_once=1
if [ "$os" = Linux ]; then if [ "$os" = Linux ]; then
if ! grep -qw cpuid "$procfs/modules" 2>/dev/null; then if ! grep -qw cpuid "$procfs/modules" 2>/dev/null; then
modprobe cpuid 2>/dev/null && insmod_cpuid=1 modprobe cpuid 2>/dev/null && insmod_cpuid=1