[PATCH v26 0/7] arm64: add kdump support

[Ruslan Bilovol]

On 10/18/2016 09:26 AM, AKASHI Takahiro wrote:
> Ruslan,
>
> On Mon, Oct 17, 2016 at 06:41:01PM +0300, Ruslan Bilovol wrote:
>> Hi,
>>
>> On 09/07/2016 07:29 AM, AKASHI Takahiro wrote:
>>>      v26-specific note: After a comment from Rob[0], an idea of adding
>>>      "linux,usable-memory-range" was dropped. Instead, an existing
>>>      "reserved-memory" node will be used to limit usable memory ranges
>>>      on crash dump kernel.
>>>      This works not only on UEFI/ACPI systems but also on DT-only systems,
>>>      but if he really insists on using DT-specific "usable-memory" property,
>>>      I will post additional patches for kexec-tools. Those would be
>>>      redundant, though.
>>>      Even in that case, the kernel will not have to be changed.
>>>
>>> This patch series adds kdump support on arm64.
>>> There are some prerequisite patches [1],[2].
>>>
>>> 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 always use my latest kdump patches, v3 [3].
>>>
>>> To examine vmcore (/proc/vmcore) on a crash-dump kernel, you can use
>>>    - crash utility (coming v7.1.6 or later) [4]
>>>      (Necessary patches have already been queued in the master.)
>>>
>>>
>>> [0] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/452582.html
>>> [1] "arm64: mark reserved memblock regions explicitly in iomem"
>>>      http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/450433.html
>>> [2] "efi: arm64: treat regions with WT/WC set but WB cleared as memory"
>>>      http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/451491.html
>>> [3] T.B.D.
>>> [4] https://github.com/crash-utility/crash.git
>> Are you going to rebase your patch series onto v4.9-rc1 tag soon? I see
> Yes, definitely as soon as possible! (actually I've done it.)
> But before submitting a new version, I need to convince Rob (Herring)
> that he would accept my old approach (v25) regarding specifying usable
> memory for crash dump kernel:
>     http://lists.infradead.org/pipermail/linux-arm-kernel/2016-September/459379.html
It looks like the patches got stuck on review.

Could you please share that rebased version of kernel and
kexec-tools (maybe even on Linaro private git repo), I'd like
to try it on our HW while review is in progress.

Thanks,
Ruslan