[PATCH v22 0/8] arm64: add kdump support
takahiro.akashi at linaro.org
Mon Jul 11 22:05:06 PDT 2016
This patch series adds kdump support on arm64.
To load a crash-dump kernel to the systems, a series of patches to
kexec-tools , which have not yet been merged upstream, are needed.
Please update to the latest if you have been using an older version.
To examine vmcore (/proc/vmcore) on a crash-dump kernel, you can use
- crash utility (coming v7.1.6 or later) 
(Necessary patches have already been queued in the master.)
(Please rename "linux,usable-memory" to "linux,usable-memory-range"
Changes for v22 (July 12, 2016):
o Export "crashkernel-base" and "crashkernel-size" via device-tree,
and add some descriptions about them in chosen.txt
o Rename "usable-memory" to "usable-memory-range" to avoid inconsistency
with powerpc's "usable-memory"
o Make cosmetic changes regarding "ifdef" usage
o Correct some wordings in kdump.txt
Changes for v21 (July 6, 2016):
o Remove kexec patches.
o Rebase to arm64's for-next/core (Linux-4.7-rc4 based).
o Clarify the description about kvm in kdump.txt.
See the following link  for older changes:
AKASHI Takahiro (7):
arm64: kdump: reserve memory for crash dump kernel
arm64: limit memory regions based on DT property, usable-memory-range
arm64: kdump: implement machine_crash_shutdown()
arm64: kdump: add kdump support
arm64: kdump: add VMCOREINFO's for user-space coredump tools
arm64: kdump: enable kdump in the arm64 defconfig
arm64: kdump: update a kernel doc
James Morse (1):
Documentation: dt: chosen properties for arm64 kdump
Documentation/devicetree/bindings/chosen.txt | 45 ++++++
Documentation/kdump/kdump.txt | 16 ++-
arch/arm64/Kconfig | 11 ++
arch/arm64/configs/defconfig | 1 +
arch/arm64/include/asm/hardirq.h | 2 +-
arch/arm64/include/asm/kexec.h | 41 +++++-
arch/arm64/include/asm/smp.h | 2 +
arch/arm64/kernel/Makefile | 1 +
arch/arm64/kernel/crash_dump.c | 71 +++++++++
arch/arm64/kernel/machine_kexec.c | 67 ++++++++-
arch/arm64/kernel/setup.c | 7 +-
arch/arm64/kernel/smp.c | 64 +++++++++
arch/arm64/mm/init.c | 207 +++++++++++++++++++++++++++
13 files changed, 528 insertions(+), 7 deletions(-)
create mode 100644 arch/arm64/kernel/crash_dump.c
More information about the kexec