[PATCH v23 0/9] arm64: add kdump support
ruslan.bilovol at gmail.com
Fri Jul 29 09:26:03 PDT 2016
On Tue, Jul 26, 2016 at 11:09 AM, AKASHI Takahiro
<takahiro.akashi at linaro.org> wrote:
> On Tue, Jul 26, 2016 at 04:56:51PM +0900, AKASHI Takahiro wrote:
>> 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 pick Geoff's kexec patches  and my kdump patches .
>> 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.)
>>  http://lists.infradead.org/pipermail/kexec/2016-July/016532.html
>>  TBD
> See my kexec-tools patches in:
I tired this patch series with mentioned Geoff's kexec patches and
your kdump patches, but unfortunately it doesn't work for me.
While I can successfully load and kexec the kernel ('kexec --load' +
'kexec -e'), same combination of kernel+ramdisk+dtb doesn't boot
if I do kdump combination ('kexec -p' + sysrq crash), there is no
any output after sysrq crash trace.
Unfortunately I don't have any debugger here for deep investigation
of this issue.
Also for some reason in case of 'load and kexec the kernel' it
takes 1-2 minutes to start booting after I do kexec -e, need to
investigate it further.
Which hardware do you use for validating your patches?
Also, could you please share exact commands you use for
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