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Shriram Rajagopalan b3e96c0c75 xen: use freeze/restore/thaw PM events for suspend/resume/chkpt ... Use PM_FREEZE, PM_THAW and PM_RESTORE power events for suspend/resume/checkpoint functionality, instead of PM_SUSPEND and PM_RESUME. Use of these pm events fixes the Xen Guest hangup when taking checkpoints. When a suspend event is cancelled (while taking checkpoints once/continuously), we use PM_THAW instead of PM_RESUME. PM_RESTORE is used when suspend is not cancelled. See Documentation/power/devices.txt and linux/pm.h for more info about freeze, thaw and restore. The sequence of pm events in a suspend-resume scenario is shown below. dpm_suspend_start(PMSG_FREEZE); dpm_suspend_noirq(PMSG_FREEZE); sysdev_suspend(PMSG_FREEZE); cancelled = suspend_hypercall() sysdev_resume(); dpm_resume_noirq(cancelled ? PMSG_THAW : PMSG_RESTORE); dpm_resume_end(cancelled ? PMSG_THAW : PMSG_RESTORE); Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>		14 years ago
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Makefile	xen: add backend driver support	14 years ago
xenbus_client.c	xenbus: Xen paravirtualised PCI hotplug support.	15 years ago
xenbus_comms.c	xen/xenbus: cleanup debug noise in xenbus_comms.c	14 years ago
xenbus_comms.h	…
xenbus_probe.c	xen: xenbus PM events support	14 years ago
xenbus_probe.h	xen: xenbus PM events support	14 years ago
xenbus_probe_backend.c	xen/xenbus: fixup checkpatch issues in xenbus_probe*	14 years ago
xenbus_probe_frontend.c	xen: use freeze/restore/thaw PM events for suspend/resume/chkpt	14 years ago
xenbus_xs.c	Merge branch 'xen/xenbus' into upstream/xen	15 years ago