[PATCH v16 00/20] arm64 kexec kernel patches v16

Julien Grall julien.grall at arm.com
Thu May 12 11:24:08 PDT 2016

Hello Geoff,

On 14/04/16 22:21, Geoff Levand wrote:
> This series adds the core support for kexec re-boot and kdump on ARM64.  This
> version of the series combines Takahiro's kdump patches with my kexec patches.
> Please consider all patches for inclusion.
> To load a second stage kernel and execute a kexec re-boot or to work with kdump
> on ARM64 systems a series of patches to kexec-tools [2], 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), you should use
>    - gdb v7.7 or later
>    - crash v7.1.1 or later

I have been trying to use crash dump with your branch without much 
success on juno-r2:

WARNING: could not find MAGIC_START!
crash: cannot determine base kernel version
crash: /root/vmlinux and /root/coredump.kernel do not match!

Looking at the debug log (-p 5), the translation va -> pa computed by 
crash is wrong.

The physical address expected is 0x80a76b28, but crash return 0x88a76b28.

I am using crash built from [1] and the panic has been created using 

Also, crash dump seems to always report that Xen is running even when 
KVM was in used (see logs [2]) below.

Lastly, crash fails with an error after a couple of minutes (see logs [2]).

How you seen such errors during your testing?


[1] https://github.com/crash-utility/crash
[2] http://pastebin.com/wC8w44SN

Julien Grall

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