x86info(1) General Commands Manual x86info(1)NAME
x86info -- display x86 CPU diagnostics
SYNOPSIS
x86info [-a] [-c] [-f] [fB-F] [-m] [-mhz] [-r] [?] [--all] [--cache] [--flags] [--verbose] [--msr] [--mhz] [--registers]
[--help]
DESCRIPTION
This manual page documents x86info, a program which displays a range of information about the CPUs present in an x86 system.
In order to make full use of this program you need to have the CPU ID and MSR device drivers in your kernel with accessible device files
/dev/cpu/<n>/cpuid and /dev/cpu/<n>/msr.
OPTIONS
This program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included
below.
? --help
Show summary of options.
-a--all
Show all information. Equivalent to -c -f -m-r -mhz.
-c--cache
Show TLB, cache sizes and cache associativity.
-f--flags
Show CPU feature flags.
-m--msr
Dump model specific registers. This feature is currently only supported on a few different processors. Future versions will
include parsing of bits in MSRs for all processors.
-mhz--mhz
Estimate current clock rate.
-mp--mptable
Dump MP table showing CPUs BIOS knows about.
-r--registers
Show register values from all possible cpuid calls.
-s--show-machine-check
Show machine check exception information.
-v--verbose
Show verbose descriptions.
AUTHOR
x86info was written by Dave Jones <davej@redhat.com>.
This manual page was written by Mark Brown <broonie@debian.org> for the Debian GNU/Linux system (but may be used by others).
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License version 2.
x86info(1)
Check Out this Related Man Page
lsmsr(8) System Manager's Manual lsmsr(8)NAME
lsmsr - show MSR information for x86 CPUs
SYNOPSIS
lsmsr [-hv] [-a [-c cpu_nr] [-f family] [-l] [-r name|address] [-V verbosity] [MSR]
DESCRIPTION
lsmsr is a tool to display information for machine specific registers of x86 CPUs. Following CPUs are supported: AMD family 0xf and family
0x10. For Intel and other AMD CPUs just a some common MSRs is supported.
OPTIONS -a, --all
Show information for all MSRs known to the tool for that CPU family.
-c cpu_nr, --cpu cpu_nr
Select CPU (by number) for which MSR information should be displayed (default: 0).
-f fam, --family fam
Specify CPU family. Normally CPU family is auto-detected. You can use this option to disable auto-detection, e.g. for debugging pur-
poses.
-l, --list
Show definition (address, field description) of selected MSR(s).
-r name|address, --register name|address
Specify MSR (by name or address in hex) for which MSR information should be displayed.
-V num, --verbosity num
Select verbosity of output format (between 0 and 4, default: 0)
-h, --help
Print help message and exit.
-v, --version
Display version info and exit.
Examples
Show all MSRs beginning with 'MTRR' and force CPU family to 0x10
# lsmsr -l -f 0x10 MTRR
MTRRcap : 0x000000fe
MTRRphysBase0 : 0x00000200
MTRRphysMask0 : 0x00000201
MTRRphysBase1 : 0x00000202
MTRRphysMask1 : 0x00000203
MTRRphysBase2 : 0x00000204
MTRRphysMask2 : 0x00000205
MTRRphysBase3 : 0x00000206
MTRRphysMask3 : 0x00000207
MTRRphysBase4 : 0x00000208
MTRRphysMask4 : 0x00000209
MTRRphysBase5 : 0x0000020a
MTRRphysMask5 : 0x0000020b
MTRRphysBase6 : 0x0000020c
MTRRphysMask6 : 0x0000020d
MTRRphysBase7 : 0x0000020e
MTRRphysMask7 : 0x0000020f
MTRRfix64K_00000 : 0x00000250
MTRRfix16K_80000 : 0x00000258
MTRRfix16K_A0000 : 0x00000259
MTRRfix4K_C0000 : 0x00000268
MTRRfix4K_C8000 : 0x00000269
MTRRfix4K_D0000 : 0x0000026a
MTRRfix4K_D8000 : 0x0000026b
MTRRfix4K_E0000 : 0x0000026c
MTRRfix4K_E8000 : 0x0000026d
MTRRfix4K_F0000 : 0x0000026e
MTRRfix4K_F8000 : 0x0000026f
MTRRdefType : 0x000002ff
Show 'MTRRcap MSR in verbose one-line mode
# lsmsr -r MTRRcap -V 1
MTRRcap = 0x0000000000000508 (MtrrCapVCnt=0x8, MtrrCapFix=0x1, MtrrCapWc=0x1)
Show 'MTRRdefType' in verbose multi-line mode
# lsmsr -r MTRRdefType -V 3
MTRRdefType = 0x0000000000000c00
MtrrDefMemType=0
MtrrDefTypeFixEn=0x1
MtrrDefTypeEn=0x1
Show definition of MSR 0x200 in verbose multi-line mode (including reserved fields)
# lsmsr -r 0x200 -V 4 -l
MTRRphysBase0: 0x00000200
0-7:Type
8-11:res
12-39:PhyBase
40-63:res
List all known MSRs for family 0xf
# lsmsr -f 0xf -l -a
TSC : 0x00000010; time-stamp counter
APIC_BASE : 0x0000001b; APIC base address
...
MTRRphysBase0 : 0x00000200; base of variable MTRR (0)
MTRRphysMask0 : 0x00000201; mask of variable MTRR (0)
MTRRphysBase1 : 0x00000202; base of variable MTRR (1)
MTRRphysMask1 : 0x00000203; mask of variable MTRR (1)
...
MTRRfix4K_F0000 : 0x0000026e
MTRRfix4K_F8000 : 0x0000026f
PAT : 0x00000277; page attribute table
MTRRdefType : 0x000002ff
Author
lsmsr and this manual page was written by Andreas Herrmann <andreas.herrman3@amd.com>.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License version 2.
REPORTING BUGS
Please send bug reports to <andreas.herrmann3@amd.com>.
x86utils July 2008 lsmsr(8)