Hello

Browsing the web again about that, I came across an fresh implementation 
prepared by Daniel Drake <dr...@endlessm.com>. Is it possible to implement this 
patch?
https://patchwork.ozlabs.org/project/linux-ide/patch/20190610074456.2761-1-dr...@endlessm.com

Best Regards,
Marcin

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https://bugs.launchpad.net/bugs/1808842

Title:
  NVMe remap support

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Current linux kernel is not support the NVMe remap configuration, this
  provide a problem with access to the NVMe drive or with the new Intel
  Optane Memory in RAID mode.

  [    6.151220] ahci 0000:00:17.0: version 3.0
  [    6.151361] ahci 0000:00:17.0: Found 1 remapped NVMe devices.
  [    6.151362] ahci 0000:00:17.0: Switch your BIOS from RAID to AHCI mode to 
use them.
  [    6.151375] ahci 0000:00:17.0: SSS flag set, parallel bus scan disabled
  [    6.151399] ahci 0000:00:17.0: AHCI 0001.0301 32 slots 2 ports 6 Gbps 0x3 
impl RAID mode

  
  The patch is publihed: 
http://lists.infradead.org/pipermail/linux-nvme/2016-October/006800.html, 
unfortunately is not applicable because is no a standard.
  It is possible to patch the kernel anyway? Maybe via external module 
extension ?

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: linux-image-4.18.0-10-generic 4.18.0-10.11
  ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
  Uname: Linux 4.18.0-10-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1744 F.... pulseaudio
   /dev/snd/pcmC0D0p:   ubuntu     1744 F...m pulseaudio
  CasperVersion: 1.399
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Dec 17 16:49:34 2018
  LiveMediaBuild: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
  MachineType: Dell Inc. Latitude E7270
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz 
file=/cdrom/preseed/username.seed boot=casper quiet splash ---
  RelatedPackageVersions:
   linux-restricted-modules-4.18.0-10-generic N/A
   linux-backports-modules-4.18.0-10-generic  N/A
   linux-firmware                             1.175
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/20/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.20.3
  dmi.board.name: 027I7V
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.20.3:bd08/20/2018:svnDellInc.:pnLatitudeE7270:pvr:rvnDellInc.:rn027I7V:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.family: Latitude
  dmi.product.name: Latitude E7270
  dmi.product.sku: 06DB
  dmi.sys.vendor: Dell Inc.

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