Re: [PATCH 2/2 v2] xen/acpi: upload PM state from init-domain to Xen

From: Stanislaw Gruszka
Date: Wed Mar 22 2017 - 05:06:44 EST


On Tue, Mar 21, 2017 at 03:43:38PM -0700, Ankur Arora wrote:
> This was broken in commit cd979883b9ede90643e019f33cb317933eb867b4.
> do_suspend (from xen/manage.c) and thus xen_resume_notifier never get
> called on the initial-domain at resume (it is if running as guest.)
>
> The rationale for the breaking change was that upload_pm_data()
> potentially does blocking work in syscore_resume(). This patch
> addresses the original issue by scheduling upload_pm_data() to
> execute in workqueue context.

It is ok to do upload_pm_data() with delay i.e. after some other
resume actions are done and possibly xen-acpi-processor is in
running state ?

Stanislaw