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Ross Lagerwall 2aebee063b xen/manage: Always freeze/thaw processes when suspend/resuming 
commit 61a734d305 upstream.

Always freeze processes when suspending and thaw processes when resuming
to prevent a race noticeable with HVM guests.

This prevents a deadlock where the khubd kthread (which is designed to
be freezable) acquires a usb device lock and then tries to allocate
memory which requires the disk which hasn't been resumed yet.
Meanwhile, the xenwatch thread deadlocks waiting for the usb device
lock.

Freezing processes fixes this because the khubd thread is only thawed
after the xenwatch thread finishes resuming all the devices.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2014-10-05 14:52:17 -07:00
..
events xen/events/fifo: reset control block and local HEADs on resume 2014-09-17 09:19:20 -07:00
xen-pciback
…
xenbus xen/pvh: Piggyback on PVHVM XenBus. 2014-01-06 10:44:23 -05:00
xenfs
…
Kconfig Features: 2014-01-22 22:00:18 -08:00
Makefile ia64/xen: Remove Xen support for ia64 even more 2014-02-11 10:12:37 -05:00
acpi.c
…
balloon.c xen/balloon: set ballooned out pages as invalid in p2m 2014-07-28 08:05:57 -07:00
biomerge.c
…
cpu_hotplug.c
…
dbgp.c xen: Use dev_is_pci() to check whether it is pci device 2014-01-07 09:53:33 -05:00
evtchn.c xen/evtchn: support more than 4096 ports 2014-01-06 10:07:50 -05:00
fallback.c
…
features.c
…
gntalloc.c
…
gntdev.c Revert "xen/grant-table: Avoid m2p_override during mapping" 2014-02-03 06:44:49 -05:00
grant-table.c Revert "xen/grant-table: Avoid m2p_override during mapping" 2014-02-03 06:44:49 -05:00
manage.c xen/manage: Always freeze/thaw processes when suspend/resuming 2014-10-05 14:52:17 -07:00
mcelog.c
…
pci.c xen/pci: Fix build on non-x86 2014-01-06 10:07:30 -05:00
pcpu.c
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platform-pci.c xen-platform: fix error return code in platform_pci_init() 2014-01-07 09:59:51 -05:00
privcmd.c xen: privcmd: do not return pages which we have failed to unmap 2013-12-06 17:55:56 +00:00
privcmd.h
…
swiotlb-xen.c xen: swiotlb: handle sizeof(dma_addr_t) != sizeof(phys_addr_t) 2014-01-30 12:54:20 +00:00
sys-hypervisor.c
…
tmem.c
…
xen-acpi-cpuhotplug.c Merge branch 'acpi-cleanup' into acpi-hotplug 2013-12-07 01:05:17 +01:00
xen-acpi-memhotplug.c Merge branch 'acpi-cleanup' into acpi-hotplug 2013-12-07 01:05:17 +01:00
xen-acpi-pad.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
xen-acpi-processor.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
xen-balloon.c
…
xen-selfballoon.c drivers: xen: deaggressive selfballoon driver 2014-01-31 09:48:43 -05:00
xen-stub.c
…