peter/spectre-meltdown-checker
1
0
Fork 0
mirror of https://github.com/speed47/spectre-meltdown-checker.git synced 2026-04-07 09:13:20 +02:00
Code Issues Projects Releases Wiki Activity

fix: wrmsr: specify core number (closes #294)

Browse Source
This commit is contained in:
Stéphane Lesimple
2026-04-06 17:01:17 +02:00
parent ac09be87b5
commit fe5bf7c003
1 changed files with 1 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/libs/340_cpu_msr.sh
View File

@@ -86,14 +86,13 @@ write_msr_one_core() {
ret=$? ret=$?
else else
# for Linux # for Linux
# convert to decimal
if [ ! -w $CPU_DEV_BASE/"$core"/msr ]; then if [ ! -w $CPU_DEV_BASE/"$core"/msr ]; then
ret_write_msr_msg="No write permission on $CPU_DEV_BASE/$core/msr" ret_write_msr_msg="No write permission on $CPU_DEV_BASE/$core/msr"
return $WRITE_MSR_RET_ERR return $WRITE_MSR_RET_ERR
# if wrmsr is available, use it # if wrmsr is available, use it
elif command -v wrmsr >/dev/null 2>&1 && [ "${SMC_NO_WRMSR:-}" != 1 ]; then elif command -v wrmsr >/dev/null 2>&1 && [ "${SMC_NO_WRMSR:-}" != 1 ]; then
pr_debug "write_msr: using wrmsr" pr_debug "write_msr: using wrmsr"
wrmsr $msr_dec $value_dec 2>/dev/null wrmsr -p "$core" $msr_dec $value_dec 2>/dev/null
ret=$? ret=$?
# ret=4: msr doesn't exist, ret=127: msr.allow_writes=off # ret=4: msr doesn't exist, ret=127: msr.allow_writes=off
[ "$ret" = 127 ] && write_denied=1 [ "$ret" = 127 ] && write_denied=1