kernel-packages team mailing list archive

[Breno Leitão <1415562@xxxxxxxxxxxxxxxxxx>]

Just checked in the in the 3.19 kernel and the CONFIG_FA_DUMP is
enabled.

ubuntu@ubuntu1504:/boot$ cat /boot/config-3.19.0-6-generic | grep FA_DUMP
CONFIG_FA_DUMP=y

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https://bugs.launchpad.net/bugs/1415562

Title:
  [Ubuntu 15.04] Support firmware assisted dump on ppc64le

Status in linux package in Ubuntu:
  Fix Committed
Status in makedumpfile package in Ubuntu:
  Fix Released

Bug description:
  Starting from POWER6, the firmware now has a capability to preserve
  the partition memory dump during system crash and boot into a fresh
  copy of the kernel with fully-reset system. This feature adds the
  necessary support to exploit the dump capture capability provided by
  Power firmware.  With this feature support, the production kernel will
  register for firmware-assisted dump using RTAS (Runtime Abstraction
  Service) calls and builds required ELF header which then gets exported
  through '/proc/vmcore' in the second kernel after crash.  This feature
  improves Power serviceability by making it more robust compared to
  current kdump mechanism on Linux.

  Ubuntu 15.04 kernel already includes the necessary code for fadump.
  The only kernel change needed is to enable CONFIG_FA_DUMP in the
  kernel configuration. In addition, an update is needed for a script in
  kdump-tools package.

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