Re: [PATCH v2 01/11] xen/manage: keep track of the on-going suspend mode

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On 8/4/20 7:42 PM, Anchal Agarwal wrote:
>
> I think this could be done. PM_HIBERNATION_PREPARE could return -ENOTSUPP
> for arm and pvh dom0 when the notifier call chain is invoked for this case
> in hibernate(). This will then be an empty notifier just for checking two
> usecases.
> Also, for pvh dom0, the earlier code didn't register any notifier,
> with this approach you are suggesting setup the notifier for hvm/pvh dom0 and
> arm but fail during notifier call chain during PM_HIBERNATION_PREPARE ?


Right.


(Although the earlier code did register the notifier:
xen_setup_pm_notifier() would return an error for !xen_hvm_domain() and
PVH *is* an HVM domain, so registration would actually happen)


>
> I think still getting rid of suspend mode that was earlier a part of this
> notifier is a good idea as it seems redundant as you pointed out earlier. 


Yes.


-boris







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