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PM / Hibernate: Include storage keys in hibernation image on s390

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For s390 there is one additional byte associated with each page,
the storage key. This byte contains the referenced and changed
bits and needs to be included into the hibernation image.
If the storage keys are not restored to their previous state all
original pages would appear to be dirty. This can cause
inconsistencies e.g. with read-only filesystems.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Martin Schwidefsky
2011-08-17 20:42:24 +02:00
committed by Rafael J. Wysocki
parent ca123102f6
commit 85055dd805
6 changed files with 177 additions and 0 deletions
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kernel/power/Kconfig
+3
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@@ -65,6 +65,9 @@ config HIBERNATION
For more information take a look at <file:Documentation/power/swsusp.txt>.
config ARCH_SAVE_PAGE_KEYS
bool
config PM_STD_PARTITION
string "Default resume partition"
depends on HIBERNATION