Thank you for your reply!

On 02/07/2020 02:41, jinchen wrote:
>> Hello xen experts:
>> 
>> Is there any way to save xen and dom0 core dump log when xen or dom0 
>> crash on ARM64 platform?

>Usually all the crash stack trace (Xen and Dom0) should be output on the 
>Xen Console.


But if I don't connect a debug serial and want to check the dump error after 
reboot?

>>      I find that the kdump seems can't run on ARM64 
platform?

>We don't have support for kdump/kexec on Arm in Xen yet.


I find the kdump seems the appropriate way to do this, but it doesn't support 
xen arm64.

>>      Are there any patches or other way to achive this 
goal?

>I am not aware of any patches, but they would be welcomed.

>For other way, it depends what exactly you expect. Do you need more than 
>the stack trace?

The stack trace will be ok, if other infomantion can be save will be better 
(like memory/vcpu/domain, etc.)

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