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Re: [Xen-devel] ARM: Issues while Enabling hibernation in domU(linux) on jacinto-j6

Replying to myself.

On 06/06/18 19:00, Julien Grall wrote:
On 06/06/18 09:17, moin anjnawala wrote:
Can you point me towards what could be the issue ? If any other
information is needed then I can provide it to you.

Looking at the log and Linux 4.17, none of the PV drivers seem to have suspend/resume callback. This might be the reason of the crash as from Xen PoV this is a new guest so the memory and event channel have not been configured. The guest should really do it again.

It looks like there are some code in drivers/xen/manage.c to handle suspend request from the toolstack. I am not entirely sure why we need our own way to suspend and not re-used the Linux one.

Jurgen, Boris, do you know if suspend-to-disk from the guest console works on x86?

It looks like it was not supported. Amazon recently sent an RFC to support it (see [1]). This seems to have some architecture specific code but only for x86. Arm bits would need to be implemented.


[1] https://lists.xenproject.org/archives/html/xen-devel/2018-06/msg00823.html

Julien Grall

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