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| author | Stéphane Lesimple <speed47_github@speed47.net> | 2018-01-07 18:36:56 +0100 |
|---|---|---|
| committer | Stéphane Lesimple <speed47_github@speed47.net> | 2018-01-07 18:36:56 +0100 |
| commit | bffda8b3e79e17b93ebda07a7ff181e2bcfcb5fb (patch) | |
| tree | c38cb9a43113fec83291e10d11d1df35ba0a4280 | |
| parent | 13f2133a978c4e6c9c0556c9aa928f488ae43b8b (diff) | |
| download | spectre-meltdown-checker-bffda8b3e79e17b93ebda07a7ff181e2bcfcb5fb.tar.lz spectre-meltdown-checker-bffda8b3e79e17b93ebda07a7ff181e2bcfcb5fb.tar.xz spectre-meltdown-checker-bffda8b3e79e17b93ebda07a7ff181e2bcfcb5fb.zip | |
remove dependency on rdmsr
| -rwxr-xr-x | spectre-meltdown-checker.sh | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/spectre-meltdown-checker.sh b/spectre-meltdown-checker.sh index 7e53de5..37138a5 100755 --- a/spectre-meltdown-checker.sh +++ b/spectre-meltdown-checker.sh @@ -1,7 +1,7 @@ #! /bin/sh # Spectre & Meltdown checker # Stephane Lesimple -VERSION=0.05 +VERSION=0.06 pstatus() { @@ -116,22 +116,12 @@ fi if [ ! -e /dev/cpu/0/msr ]; then pstatus yellow UNKNOWN "couldn't read /dev/cpu/0/msr, is msr support enabled in your kernel?" else - if which rdmsr >/dev/null 2>&1; then - rdmsr 0x48 >/dev/null 2>&1 - if [ $? -eq 0 ]; then - pstatus green YES - else - pstatus red NO - fi + # same that rdmsr 0x48 but without needing the rdmsr tool + dd if=/dev/cpu/0/msr of=/dev/null bs=8 count=1 skip=9 2>/dev/null + if [ $? -eq 0 ]; then + pstatus green YES else - pstatus yellow UNKNOWN "missing 'rdmsr' tool, please install it, usually it's in the msr-tools package" - # doesn't work: - #dd if=/dev/cpu/0/msr of=/dev/null bs=1 count=8 skip=72 2>/dev/null - #if [ $? -eq 0 ]; then - # pstatus green YES - #else - # pstatus red NO - #fi + pstatus red NO fi fi |