Still not fixed with rc7.
>From the 4.8.014 kernel:

oem@u64:~$ journalctl | grep pmd_set_huge
Sep 22 06:00:39 u64 kernel: pmd_set_huge: Cannot satisfy [mem 
0xf0000000-0xf0200000] with a huge-page mapping due to MTRR override.

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  pmd_set_huge: Cannot satisfy [mem 0xf0000000-0xf0200000] with a huge-
  page mapping due to MTRR override

Status in linux package in Ubuntu:

Bug description:
  This is logged with the 4.8 kernels actualy used, from the unstable ppa
  Its an upstream problem, as such error is found all over the distros.

  Can not say if its due to incompatible hardware, buggy bios or
  lintian/systemd/acpi/... reason(s) nor if a booting setting is

  note: this does not semms affecting the system (in my case at least).

  The hardware is quite old, and the bios is no more upgradable.

  Relative links:

  " Drivers should make a mapping request aligned to a single MTRR entry
  when the range is covered by MTRRs. "

   cat /proc/mtrr 
  reg00: base=0x0c0000000 ( 3072MB), size= 1024MB, count=1: uncachable
  reg01: base=0x000000000 (    0MB), size= 4096MB, count=1: write-back
  reg02: base=0x100000000 ( 4096MB), size= 1024MB, count=1: write-back

  sudo dmesg | grep -5 -i mtrr
  [    0.000000] SMBIOS 2.4 present.
  [    0.000000] DMI: ASUSTEK COMPUTER INC P5W DH Deluxe/P5W DH Deluxe, BIOS 
3002    07/22/2010
  [    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
  [    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
  [    0.000000] e820: last_pfn = 0x140000 max_arch_pfn = 0x400000000
  [    0.000000] MTRR default type: uncachable
  [    0.000000] MTRR fixed ranges enabled:
  [    0.000000]   00000-9FFFF write-back
  [    0.000000]   A0000-DFFFF uncachable
  [    0.000000]   E0000-EFFFF write-through
  [    0.000000]   F0000-FFFFF write-protect
  [    0.000000] MTRR variable ranges enabled:
  [    0.000000]   0 base 0C0000000 mask FC0000000 uncachable
  [    0.000000]   1 base 000000000 mask F00000000 write-back
  [    0.000000]   2 base 100000000 mask FC0000000 write-back
  [    0.000000]   3 disabled
  [    0.000000]   4 disabled
  [    0.249861] ACPI: Interpreter enabled
  [    0.249882] ACPI: (supports S0 S1 S3 S4 S5)
  [    0.249886] ACPI: Using IOAPIC for interrupt routing
  [    0.249918] PCI: MMCONFIG for domain 0000 [bus 00-3f] at [mem 
0xf0000000-0xf3ffffff] (base 0xf0000000)
  [    0.250976] PCI: MMCONFIG at [mem 0xf0000000-0xf3ffffff] reserved in ACPI 
motherboard resources
  [    0.250986] pmd_set_huge: Cannot satisfy [mem 0xf0000000-0xf0200000] with 
a huge-page mapping due to MTRR override.
  [    0.251065] PCI: Using host bridge windows from ACPI; if necessary, use 
"pci=nocrs" and report a bug
  [    0.255750] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
  [    0.255758] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM 
ClockPM Segments MSI]
  [    0.255767] acpi PNP0A08:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
  [    0.255778] acpi PNP0A08:00: [Firmware Info]: MMCONFIG for domain 0000 
[bus 00-3f] only partially covers this bridge
  ApportVersion: 2.20.3-0ubuntu7
  Architecture: amd64
   /dev/snd/controlC1:  oem        1821 F.... pulseaudio
   /dev/snd/pcmC0D0p:   oem        1821 F...m pulseaudio
   /dev/snd/controlC0:  oem        1821 F.... pulseaudio
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 16.10
  HibernationDevice: RESUME=UUID=0a9ca7f0-6eeb-4b21-b70f-670fa600de16
   eth0      no wireless extensions.

   lo        no wireless extensions.

   eth1      no wireless extensions.
   Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 002: ID 046d:c062 Logitech, Inc. M-UAS144 [LS1 Laser Mouse]
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  Package: linux (not installed)
  ProcFB: 0 simple
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-7-generic 
root=UUID=7c755ed6-51cc-4b75-88ac-9c75acf82749 ro
  ProcVersionSignature: Ubuntu 4.8.0-7.8-generic 4.8.0-rc5
   linux-restricted-modules-4.8.0-7-generic N/A
   linux-backports-modules-4.8.0-7-generic  N/A
   linux-firmware                           1.160

  Tags:  yakkety
  Uname: Linux 4.8.0-7-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True 07/22/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 3002
  dmi.board.asset.tag: To Be Filled By O.E.M. P5W DH Deluxe
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
dmi:bvnAmericanMegatrendsInc.:bvr3002:bd07/22/2010:svnASUSTEKCOMPUTERINC:pnP5WDHDeluxe:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5WDHDeluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: P5W DH Deluxe
  dmi.product.version: System Version
  dmi.sys.vendor: ASUSTEK COMPUTER INC

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