[PATCH v27 0/9] arm64: add kdump support
AKASHI Takahiro
takahiro.akashi at linaro.org
Thu Nov 3 20:00:26 PDT 2016
For easier testing, I pushed my patches to:
https://git.linaro.org/people/takahiro.akashi/linux-aarch64.git arm64/kdump
https://git.linaro.org/people/takahiro.akashi/kexec-tools.git arm64/kdump
If anybody tries my patches, please let me know the result.
(Pratyush, thank you for your test.)
Thanks,
-Takahiro AKASHI
On Wed, Nov 02, 2016 at 01:49:59PM +0900, AKASHI Takahiro wrote:
> v27-specific note: In this version, the change made in v26 was reverted
> because I've got a comment that /reserved-memory DT property should
> not be used on UEFI/ACPI systems, even though it is workable under
> the current implementation. I've also confirmed that Rob doesn't argue
> any more against using "linux,usable-memory-range".
> So v27 is essentially the same as v25.
>
> This patch series adds kdump support on arm64.
>
> To load a crash-dump kernel to the systems, a series of patches to
> kexec-tools[1] are also needed. Please use the latest one, v4 [2].
>
> To examine vmcore (/proc/vmcore) on a crash-dump kernel, you can use
> - crash utility (v7.1.6 or later) [3]
>
>
> [1] https://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git
> [1] http://lists.infradead.org/pipermail/kexec/2016-November/017555.html
> [2] https://github.com/crash-utility/crash.git
>
> Changes for v27 (Nov 2, 2016)
> o rebased to Linux-v4.9-rc3
> o revert v26 change, i.e. revive "linux,usable-memory-range" property
> (patch #2/#3, updating patch #9)
> o minor fixes per review comments (patch #3/#4/#6/#8)
> o re-order patches and improve commit messages for readability
>
> Changes for v26 (Sep 7, 2016):
> o Use /reserved-memory instead of "linux,usable-memory-range" property
> (dropping v25's patch#2 and #3, updating ex-patch#9.)
>
> Changes for v25 (Aug 29, 2016):
> o Rebase to Linux-4.8-rc4
> o Use memremap() instead of ioremap_cache() [patch#5]
>
> Changes for v24 (Aug 9, 2016):
> o Rebase to Linux-4.8-rc1
> o Update descriptions about newly added DT proerties
>
> Changes for v23 (July 26, 2016):
>
> o Move memblock_reserve() to a single place in reserve_crashkernel()
> o Use cpu_park_loop() in ipi_cpu_crash_stop()
> o Always enforce ARCH_LOW_ADDRESS_LIMIT to the memory range of crash kernel
> o Re-implement fdt_enforce_memory_region() to remove non-reserve regions
> (for ACPI) from usable memory at crash kernel
>
> 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 [3] for older changes:
> [3] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-June/438780.html
>
> AKASHI Takahiro (8):
> memblock: add memblock_cap_memory_range()
> arm64: limit memory regions based on DT property, usable-memory-range
> arm64: kdump: reserve memory for crash dump kernel
> arm64: kdump: implement machine_crash_shutdown()
> arm64: kdump: add VMCOREINFO's for user-space tools
> arm64: kdump: provide /proc/vmcore file
> arm64: kdump: enable kdump in defconfig
> Documentation: kdump: describe arm64 port
>
> James Morse (1):
> Documentation: dt: chosen properties for arm64 kdump
>
> Documentation/devicetree/bindings/chosen.txt | 50 +++++++
> 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 | 42 +++++-
> 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 | 63 +++++++++
> arch/arm64/mm/init.c | 199 +++++++++++++++++++++++++++
> include/linux/memblock.h | 1 +
> mm/memblock.c | 28 ++++
> 15 files changed, 554 insertions(+), 7 deletions(-)
> create mode 100644 arch/arm64/kernel/crash_dump.c
>
> --
> 2.10.0
>
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