1 2You need to be ROOT or use SUDO to execute MSRTOOL. 3 4Note that you need /dev/cpu/*/msr available to run msrtool in Linux. 5 6 7syntax: msrtool [-hvqrkl] [-c cpu] [-m system] [-t target ...] 8 [-i addr=hi[:]lo] | [-s file] | [-d [:]file] | addr... 9 -h show this help text 10 -v be verbose 11 -q be quiet (overrides -v) 12 -r include [Reserved] values 13 -k list all known systems and targets 14 -l list MSRs and bit fields for current target(s) (-kl for ALL targets!) 15 -c access MSRs on the specified CPU, default=0 16 -m force a system, e.g: -m linux 17 -t force a target, can be used multiple times, e.g: -t geodelx -t cs5536 18 -i immediate mode 19 decode hex addr=hi:lo for the target without reading hw value 20 e.g: -i 4c00000f=f2f100ff56960004 21 -s stream mode 22 read one MSR address per line and append current hw value to the line 23 use the filename - for stdin/stdout 24 using -l -s ignores input and will output all MSRs with values 25 -d diff mode 26 read one address and value per line and compare with current hw value, 27 printing differences to stdout. use the filename - to read from stdin 28 use :file or :- to reverse diff, normally hw values are considered new 29 addr.. direct mode, read and decode values for the given MSR address(es) 30 31 32Examples: 33 34msrtool 0x20000018 35 36./msrtool 0x200000{18,19,1a,1b,1c,1d} 0x4c0000{0f,14} 37