>rpm -qi --changelog xen | head -n45
Name        : xen
Version     : 4.8.2
Release     : 2.el7
Architecture: x86_64
Install Date: Fri 22 Sep 2017 12:48:19 PM PDT
Group       : Development/Libraries
Size        : 371962
License     : GPLv2+ and LGPLv2+ and BSD
Signature   : (none)
Source RPM  : xen-4.8.2-2.el7.src.rpm
Build Date  : Wed 13 Sep 2017 04:12:13 PM PDT
Build Host  : c7gui
Relocations : (not relocatable)
Packager    : "Mark Pryor "
URL         : http://xen.org/
Summary     : Xen is a virtual machine monitor
Description :
This package contains the xendomain script and systemd service file, needed to manage
virtual machines running under the Xen hypervisor
* Wed Sep 13 2017 "Mark Pryor " - 4.8.2-2.el7
- first build in Centos 7.4.1708
- HEAD @36898eb12572f0a
  gnttab: also validate PTE permissions upon destroy/replace-Tue 12 Sep 2017 06:07
- XSA-231
  xen-mm-make-sure-node-is-less-than-MAX_NUMNODES
- XSA-232
  grant_table-fix-GNTTABOP_cache_flush-handling
- XSA-233
  tools-xenstore-dont-unlink-connection-object-twice.diff
- XSA-234
  gnttab-also-validate-PTE-permissions-upon-destroy-rep
- move hypervisor kconfigs (xen-4.8*.config) into boot/kcfg/

* Wed Sep 06 2017 "Mark Pryor " - 4.8.2-1.el7
- rebase to xen-4.8.2
- initial release closes (#87654)
- built for 7.4.1708 using CR repo
- new conditional package: xen-perf-hypervisor
- added efidir macro

* Mon Aug 28 2017 "Mark Pryor " - 4.8.1-6.el7
test build for 7.4.1708 using CR repo
- XSA-226
  gnttab-fix-don-t-use-possibly-unbounded-tail-calls
- HEAD @ ffb73c140637a39e

>cat /etc/centos-release
CentOS Linux release 7.4.1708 (Core) 

>xl dmesg | head -n85
 __  __            _  _    ___   ____  
 \ \/ /___ _ __   | || |  ( _ ) |___ \ 
  \  // _ \ '_ \  | || |_ / _ \   __) |
  /  \  __/ | | | |__   _| (_) | / __/ 
 /_/\_\___|_| |_|    |_|(_)___(_)_____|
                                       
(XEN) Xen version 4.8.2 (mockbuild@prymar56.org) (gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-16)) debug=n  Wed Sep 13 16:02:14 PDT 2017
(XEN) Latest ChangeSet: 36898eb12572f0a-gnttab: also validate PTE permissions upon destroy/replace-Tue 12 Sep 2017 06:07
(XEN) Bootloader: GNU GRUB 0.97
(XEN) Command line: dom0_mem=512M,max:608M  sched=credit2 console=vga vga=gfx-1280x1024x16  loglvl=all guest_loglvl=all  conring_size=48k cpufreq=none
(XEN) Video information:
(XEN)  VGA is graphics mode 1280x1024, 16 bpp
(XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds
(XEN) Disc information:
(XEN)  Found 3 MBR signatures
(XEN)  Found 3 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009dc00 (usable)
(XEN)  000000000009f800 - 00000000000a0000 (reserved)
(XEN)  00000000000f0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000dfee0000 (usable)
(XEN)  00000000dfee0000 - 00000000dfee2000 (ACPI NVS)
(XEN)  00000000dfee2000 - 00000000dfef0000 (ACPI data)
(XEN)  00000000dfef0000 - 00000000dff00000 (reserved)
(XEN)  00000000f4000000 - 00000000f8000000 (reserved)
(XEN)  00000000fec00000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 0000000120000000 (usable)
(XEN) ACPI: RSDP 000F7100, 0014 (r0 GBT   )
(XEN) ACPI: RSDT DFEE2040, 003C (r1 GBT    GBTUACPI 42302E31 GBTU  1010101)
(XEN) ACPI: FACP DFEE20C0, 0074 (r1 GBT    GBTUACPI 42302E31 GBTU  1010101)
(XEN) ACPI: DSDT DFEE2180, 4C86 (r1 GBT    GBTUACPI     1000 MSFT  100000C)
(XEN) ACPI: FACS DFEE0000, 0040
(XEN) ACPI: HPET DFEE6F80, 0038 (r1 GBT    GBTUACPI 42302E31 GBTU       98)
(XEN) ACPI: MCFG DFEE7000, 003C (r1 GBT    GBTUACPI 42302E31 GBTU  1010101)
(XEN) ACPI: EUDS DFEE7040, 0000 (r1 GBT                    0             0)
(XEN) ACPI: TAMG DFEE7560, 6852 (r1 GBT    GBT   B0 5455312E BG    20101)
(XEN) ACPI: APIC DFEE6E80, 0084 (r1 GBT    GBTUACPI 42302E31 GBTU  1010101)
(XEN) System RAM: 4094MB (4192756kB)
(XEN) No NUMA configuration found
(XEN) Faking a node at 0000000000000000-0000000120000000
(XEN) Domain heap initialised
(XEN) Allocated console ring of 64 KiB.
(XEN) vesafb: framebuffer at 0xe0000000, mapped to 0xffff82c000201000, using 4096k, total 262144k
(XEN) vesafb: mode is 1280x1024x16, linelength=2560, font 8x16
(XEN) vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
(XEN) CPU Vendor: Intel, Family 6 (0x6), Model 23 (0x17), Stepping 10 (raw 0001067a)
(XEN) found SMP MP-table at 000f5700
(XEN) DMI 2.4 present.
(XEN) Using APIC driver default
(XEN) ACPI: PM-Timer IO Port: 0x408 (24 bits)
(XEN) ACPI: SLEEP INFO: pm1x_cnt[1:404,1:0], pm1x_evt[1:400,1:0]
(XEN) ACPI:             wakeup_vec[dfee000c], vec_size[20]
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
(XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
(XEN) ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
(XEN) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
(XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
(XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
(XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
(XEN) ACPI: IRQ0 used by override.
(XEN) ACPI: IRQ2 used by override.
(XEN) ACPI: IRQ9 used by override.
(XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
(XEN) ACPI: HPET id: 0x8086a201 base: 0xfed00000
(XEN) ERST table was not found
(XEN) Using ACPI (MADT) for SMP configuration information
(XEN) SMP: Allowing 4 CPUs (2 hotplug CPUs)
(XEN) IRQ limits: 24 GSI, 376 MSI/MSI-X
(XEN) xstate: size: 0x240 and states: 0x3
(XEN) Intel machine check reporting enabled
(XEN) Using scheduler: SMP Credit Scheduler rev2 (credit2)
(XEN) Initializing Credit2 scheduler
(XEN)  load_precision_shift: 18
(XEN)  load_window_shift: 30
(XEN)  underload_balance_tolerance: 0
(XEN)  overload_balance_tolerance: -3
(XEN)  runqueues arrangement: socket
(XEN) load tracking window lenght 1073741824 ns
(XEN) Adding cpu 0 to runqueue 0

>systemctl status lvm2-pvscan@8:33.service
● lvm2-pvscan@8:33.service - LVM2 PV scan on device 8:33
   Loaded: loaded (/usr/lib/systemd/system/lvm2-pvscan@.service; static; vendor preset: disabled)
  Drop-In: /etc/systemd/system/lvm2-pvscan@8:33.service.d
           └─fix.conf
   Active: active (exited) since Fri 2017-09-22 12:57:40 PDT; 1min 54s ago
     Docs: man:pvscan(8)
  Process: 479 ExecStart=/usr/sbin/lvm pvscan --cache --activate ay %i (code=exited, status=0/SUCCESS)
 Main PID: 479 (code=exited, status=0/SUCCESS)

Sep 22 12:57:21 c7dom0 systemd[1]: Starting LVM2 PV scan on device 8:33...
Sep 22 12:57:21 c7dom0 lvm[479]: WARNING: lvmetad is being updated, retrying (setup) for 10 more seconds.
Sep 22 12:57:22 c7dom0 lvm[479]: WARNING: lvmetad is being updated, retrying (setup) for 9 more seconds.
Sep 22 12:57:40 c7dom0 lvm[479]: 48 logical volume(s) in volume group "maxvm" now active
Sep 22 12:57:40 c7dom0 systemd[1]: Started LVM2 PV scan on device 8:33.

>systemctl status dnsmasq
● dnsmasq.service - DNS caching server.
   Loaded: loaded (/usr/lib/systemd/system/dnsmasq.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/dnsmasq.service.d
           └─xen.conf
   Active: active (running) since Fri 2017-09-22 12:57:35 PDT; 1min 58s ago
  Process: 1254 ExecStartPre=/bin/bash -c /bin/cat /dev/null > /var/lib/dnsmasq/dnsmasq.leases;/bin/touch /var/log/dhcp.log.xx (code=exited, status=0/SUCCESS)
 Main PID: 1259 (dnsmasq)
   Memory: 896.0K
   CGroup: /system.slice/dnsmasq.service
           ├─1259 /usr/sbin/dnsmasq -k
           └─1269 /usr/sbin/dnsmasq -k

Sep 22 12:57:35 c7dom0 dnsmasq-dhcp[1259]: DHCP, IP range 192.168.122.3 -- 192.168.122.254, lease time 1h
Sep 22 12:57:35 c7dom0 dnsmasq[1259]: reading /etc/resolv.conf
Sep 22 12:57:35 c7dom0 dnsmasq[1259]: using nameserver 4.2.2.2#53
Sep 22 12:57:35 c7dom0 dnsmasq[1259]: using nameserver 192.168.1.1#53
Sep 22 12:57:35 c7dom0 dnsmasq[1259]: using nameserver 8.8.8.8#53
Sep 22 12:57:35 c7dom0 dnsmasq[1259]: read /etc/hosts - 2 addresses
Sep 22 12:58:44 c7dom0 dnsmasq-dhcp[1259]: DHCPDISCOVER(virbr0) 192.168.122.204 00:16:3e:7a:b2:d5
Sep 22 12:58:44 c7dom0 dnsmasq-dhcp[1259]: DHCPOFFER(virbr0) 192.168.122.204 00:16:3e:7a:b2:d5
Sep 22 12:58:44 c7dom0 dnsmasq-dhcp[1259]: DHCPREQUEST(virbr0) 192.168.122.204 00:16:3e:7a:b2:d5
Sep 22 12:58:44 c7dom0 dnsmasq-dhcp[1259]: DHCPACK(virbr0) 192.168.122.204 00:16:3e:7a:b2:d5 pv1604

>systemctl status xendomains
● xendomains.service - Xendomains - start and stop guests on boot and shutdown
   Loaded: loaded (/usr/lib/systemd/system/xendomains.service; enabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/xendomains.service.d
           └─add_lvm.conf
   Active: active (exited) since Fri 2017-09-22 12:57:51 PDT; 1min 42s ago
  Process: 1318 ExecStart=/usr/lib/xen/bin/xendomains start (code=exited, status=0/SUCCESS)
  Process: 1315 ExecStartPre=/bin/grep -q control_d /proc/xen/capabilities (code=exited, status=0/SUCCESS)
 Main PID: 1318 (code=exited, status=0/SUCCESS)
   Memory: 8.8M
   CGroup: /system.slice/xendomains.service
           ├─1704 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/a_ub20zz
           ├─2031 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/d_c7min
           ├─2289 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/e_pv1204
           ├─2672 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/f_debexp
           └─2979 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/g_pv1604

Sep 22 12:57:45 c7dom0 logger[2185]: /etc/xen/scripts/block: Writing backend/vbd/3/51712/hotplug-status connected to xenstore.
Sep 22 12:57:45 c7dom0 logger[2285]: /etc/xen/scripts/vif-bridge: Successful vif-bridge online for vif3.0, bridge br0.
Sep 22 12:57:45 c7dom0 logger[2286]: /etc/xen/scripts/vif-bridge: Writing backend/vif/3/0/hotplug-status connected to xenstore.
Sep 22 12:57:46 c7dom0 logger[2362]: /etc/xen/scripts/block: add XENBUS_PATH=backend/vbd/4/51728
Sep 22 12:57:47 c7dom0 logger[2376]: /etc/xen/scripts/block: add XENBUS_PATH=backend/vbd/4/51760
Sep 22 12:57:47 c7dom0 logger[2491]: /etc/xen/scripts/block: Writing backend/vbd/4/51728/hotplug-status connected to xenstore.
Sep 22 12:57:47 c7dom0 logger[2557]: /etc/xen/scripts/block: Writing backend/vbd/4/51712/physical-device-path /dev/dm-36 to xenstore.
Sep 22 12:57:47 c7dom0 logger[2621]: /etc/xen/scripts/block: Writing backend/vbd/4/51760/physical-device fd:2b to xenstore.
Sep 22 12:57:51 c7dom0 xendomains[1318]: Starting auto Xen domains: a_ub20zz d_c7min e_pv1204 f_debexp g_pv1604[  OK  ]
Sep 22 12:57:51 c7dom0 systemd[1]: Started Xendomains - start and stop guests on boot and shutdown.

>xl info
host                   : c7dom0
release                : 4.4.67-1.el7.elrepo.x86_64
version                : #1 SMP Mon May 8 09:45:51 EDT 2017
machine                : x86_64
nr_cpus                : 2
max_cpu_id             : 3
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 3062
hw_caps                : b7ebfbff:0408e3bd:20100800:00000001:00000000:00000000:00000000:00000000
virt_caps              : hvm
total_memory           : 4094
free_memory            : 158
sharing_freed_memory   : 0
sharing_used_memory    : 0
outstanding_claims     : 0
free_cpus              : 0
xen_major              : 4
xen_minor              : 8
xen_extra              : .2
xen_version            : 4.8.2
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 
xen_scheduler          : credit2
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : 36898eb12572f0a-gnttab: also validate PTE permissions upon dest
xen_commandline        : dom0_mem=512M,max:608M  sched=credit2 console=vga vga=gfx-1280x1024x16  loglvl=all guest_loglvl=all  conring_size=48k cpufreq=none
cc_compiler            : gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-16)
cc_compile_by          : mockbuild
cc_compile_domain      : prymar56.org
cc_compile_date        : Wed Sep 13 16:02:14 PDT 2017
build_id               : 96650af1983b6361d5574562916394b28bdcd6d1
xend_config_format     : 4

>xl list
Name                                        ID   Mem VCPUs	State	Time(s)
Domain-0                                     0   512     2     r-----      14.3
ub20zz                                       1  1236     2     -b----       6.4
c7min                                        2   984     2     -b----       5.4
pv1204                                       3   256     2     -b----       6.3
debexp                                       4   512     2     -b----       5.3
pv1604                                       5   384     2     -b----       6.5

>iptables -S -t nat
-P PREROUTING ACCEPT
-P INPUT ACCEPT
-P OUTPUT ACCEPT
-P POSTROUTING ACCEPT
-A PREROUTING -p tcp -m tcp --dport 1304 -j DNAT --to-destination 192.168.122.204:22
-A POSTROUTING -s 192.168.122.0/24 -d 224.0.0.0/24 -j RETURN
-A POSTROUTING -s 192.168.122.0/24 -d 255.255.255.255/32 -j RETURN
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p tcp -j MASQUERADE --to-ports 1024-65535
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p udp -j MASQUERADE --to-ports 1024-65535
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE

>systemctl list-unit-files | grep enab | sort
acpid.service                                 enabled 
autovt@.service                               enabled 
cgconfig.service                              enabled 
cgred.service                                 enabled 
crond.service                                 enabled 
default.target                                enabled 
dm-event.socket                               enabled 
dnsmasq.service                               enabled 
getty@.service                                enabled 
iptables.service                              enabled 
irqbalance.service                            enabled 
lvm2-lvmetad.socket                           enabled 
lvm2-lvmpolld.socket                          enabled 
lvm2-monitor.service                          enabled 
multi-user.target                             enabled 
remote-fs.target                              enabled 
rsyslog.service                               enabled 
runlevel2.target                              enabled 
runlevel3.target                              enabled 
runlevel4.target                              enabled 
sshd.service                                  enabled 
systemd-readahead-collect.service             enabled 
systemd-readahead-drop.service                enabled 
systemd-readahead-replay.service              enabled 
tmp.mount                                     enabled 
xenconsoled.service                           enabled 
xendomains.service                            enabled 
xen-init-dom0.service                         enabled 
xen-qemu-dom0-disk-backend.service            enabled 
xenstored.service                             enabled 

>ps aux | grep xen
root        23  0.1  0.0      0     0 ?        S    12:57   0:00 [xenwatch]
root        24  0.0  0.0      0     0 ?        S    12:57   0:00 [xenbus]
root        32  0.0  0.0      0     0 ?        S<   12:57   0:00 [xenbus_frontend]
root        69  0.0  0.0      0     0 ?        S<   12:57   0:00 [xen_pciback_wor]
root       797  0.6  1.6 167812  7340 ?        S    12:57   0:00 /usr/sbin/oxenstored --pid-file /var/run/xen/xenstored.pid
root       812  0.0  0.7 126924  3432 ?        SLsl 12:57   0:00 /usr/sbin/xenconsoled -i --log=none --log-dir=/var/log/xen/console
root      1023  0.0  3.0 387988 13420 ?        Sl   12:57   0:00 /usr/lib/xen/bin/qemu-system-i386 -xen-domid 0 -xen-attach -name dom0 -nographic -M xenpv -daemonize -monitor /dev/null -serial /dev/null -parallel /dev/null -nodefaults -no-user-config -pidfile /var/run/xen/qemu-dom0.pid
root      1704  0.0  0.7 145148  3160 ?        SLsl 12:57   0:00 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/a_ub20zz
root      2031  0.0  0.7 145148  3152 ?        SLsl 12:57   0:00 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/d_c7min
root      2289  0.0  0.6 145148  3092 ?        SLsl 12:57   0:00 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/e_pv1204
root      2672  0.0  0.7 145148  3204 ?        SLsl 12:57   0:00 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/f_debexp
root      2979  0.0  0.7 145148  3148 ?        SLsl 12:57   0:00 /usr/sbin/xl create --quiet --defconfig /etc/xen/auto/g_pv1604
root      3060  0.0  1.1 189404  5020 pts/5    S+   12:59   0:00 sudo ./dump_xen_trace tlviewer
root      3061  0.0  0.6 113144  2884 pts/5    S+   12:59   0:00 /bin/sh ./dump_xen_trace tlviewer
root      3077  0.0  0.5 112680  2236 pts/5    S+   12:59   0:00 grep xen

>systemd-analyze time
Startup finished in 613ms (kernel) + 5.635s (initrd) + 33.896s (userspace) = 40.145s

>systemd-analyze blame
         18.857s lvm2-pvscan@8:33.service
         11.846s xendomains.service
         10.975s network.service
          5.116s lvm2-pvscan@8:21.service
          3.580s lvm2-monitor.service
          3.172s dev-sda7.device
           731ms iptables.service
           707ms systemd-modules-load.service
           654ms xenstored.service
           561ms rhel-readonly.service
           549ms systemd-tmpfiles-setup-dev.service
           505ms xen-init-dom0.service
           456ms systemd-logind.service
           428ms systemd-fsck-root.service
           413ms rsyslog.service
           325ms systemd-journald.service
           255ms sys-kernel-debug.mount
           224ms systemd-random-seed.service
           222ms systemd-udevd.service
           216ms systemd-journal-flush.service
           213ms cgconfig.service
           207ms dev-mqueue.mount
           205ms systemd-remount-fs.service
           188ms systemd-udev-trigger.service
           182ms sshd.service
           179ms kmod-static-nodes.service
           177ms data3.mount
           172ms proc-xen.mount
           171ms rhel-dmesg.service
           140ms data4.mount
           119ms systemd-sysctl.service
           114ms systemd-vconsole-setup.service
            94ms dev-sda3.swap
            92ms cgred.service
            83ms acpid.service
            71ms systemd-user-sessions.service
            69ms data2.mount
            50ms xenconsoled.service
            40ms rhel-import-state.service
            38ms dnsmasq.service
            33ms var-lib-xenstored.mount
            30ms systemd-update-utmp.service
            26ms systemd-tmpfiles-setup.service
            19ms rc-local.service
            10ms systemd-update-utmp-runlevel.service
             8ms xen-qemu-dom0-disk-backend.service
             4ms sys-kernel-config.mount
             3ms tmp.mount

>tree /boot
/boot
├── config-3.10.0-514.2.2.el7.x86_64
├── config-4.4.67-1.el7.elrepo.x86_64
├── efi
│   └── EFI
│       └── centos
│           ├── xen-4.8.2.efi
│           └── xen-4.8.2-perf.efi
├── flask
│   └── xenpolicy-4.8.2
├── grub
│   ├── grub.cfg
│   └── splash.xpm.gz
├── grub2
│   └── grub.conf
├── initramfs-0-rescue-8ed5f8d6ee404152adf85f70bb7fd1e2.img
├── initramfs-3.10.0-514.2.2.el7.x86_64.img
├── initramfs-4.4.67-1.el7.elrepo.x86_64.img
├── kcfg
│   ├── xen-4.8.2.config
│   └── xen-4.8.2-perf.config
├── symvers-3.10.0-514.2.2.el7.x86_64.gz
├── symvers-4.4.67-1.el7.elrepo.x86_64.gz
├── System.map-3.10.0-514.2.2.el7.x86_64
├── System.map-4.4.67-1.el7.elrepo.x86_64
├── vmlinuz-0-rescue-8ed5f8d6ee404152adf85f70bb7fd1e2
├── vmlinuz-3.10.0-514.2.2.el7.x86_64
├── vmlinuz-4.4.67-1.el7.elrepo.x86_64
├── xen-4.8.2.gz
├── xen-4.8.2-perf.gz
├── xen-4.8.gz -> xen-4.8.2.gz
└── xen.gz -> xen-4.8.2.gz

7 directories, 24 files

>netstat -an | grep ^tcp
tcp        0      0 192.168.122.1:53        0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:6010          0.0.0.0:*               LISTEN     
tcp        0      0 192.168.1.9:22          192.168.1.107:40322     ESTABLISHED