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fix(write_msr): use /dev/zero instead of manually echoing zeroes

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Stéphane Lesimple
2018-03-25 12:53:50 +02:00
parent f191ec7884
commit b42d8f2f27
1 changed files with 1 additions and 1 deletions
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spectre-meltdown-checker.sh
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@@ -1280,7 +1280,7 @@ write_msr()
else
# convert to decimal
_msrindex=$(( $1 ))
_echo_nol -9 "\0\0\0\0\0\0\0\0" | dd of=/dev/cpu/"$2"/msr bs=8 count=1 seek="$_msrindex" oflag=seek_bytes 2>/dev/null; ret=$?
dd if=/dev/zero of=/dev/cpu/"$2"/msr bs=8 count=1 seek="$_msrindex" oflag=seek_bytes 2>/dev/null; ret=$?
fi
_debug "write_msr: for cpu $2 on msr $1 ($_msrindex), ret=$ret"
return $ret