xen/acpi: upload PM state from init-domain to Xen

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commit 1914f0cd20 upstream.

This was broken in commit cd979883b9 ("xen/acpi-processor:
fix enabling interrupts on syscore_resume"). 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.

Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Based-on-patch-by: Konrad Wilk <konrad.wilk@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

This commit is contained in:

Ankur Arora 2017-03-21 15:43:38 -07:00 • committed by Ben Hutchings

parent 5ff2d2e67a

commit 0f98d58739

1 changed files with 26 additions and 8 deletions

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drivers/xen/xen-acpi-processor.c

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