linux-hardened/kernel/power
James Morse f6cf0545ec PM / Hibernate: Call flush_icache_range() on pages restored in-place
Some architectures require code written to memory as if it were data to be
'cleaned' from any data caches before the processor can fetch them as new
instructions.

During resume from hibernate, the snapshot code copies some pages directly,
meaning these architectures do not get a chance to perform their cache
maintenance. Modify the read and decompress code to call
flush_icache_range() on all pages that are restored, so that the restored
in-place pages are guaranteed to be executable on these architectures.

Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
[will: make clean_pages_on_* static and remove initialisers]
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-04-28 13:35:48 +01:00
..
autosleep.c PM / Sleep: avoid 'autosleep' in shutdown progress 2013-07-15 01:31:37 +02:00
console.c arm, pm, vmpressure: add missing slab.h includes 2014-02-03 13:24:01 -05:00
hibernate.c Merge branches 'pm-avs', 'pm-clk', 'pm-devfreq' and 'pm-sleep' 2016-03-25 00:58:18 +01:00
Kconfig PM: APM_EMULATION does not depend on PM 2016-01-27 23:20:14 +01:00
main.c PM / sleep: Add support for read-only sysfs attributes 2016-01-04 22:28:59 +01:00
Makefile suspend: simplify block I/O handling 2015-05-19 09:19:59 -06:00
power.h PM / sleep: Add support for read-only sysfs attributes 2016-01-04 22:28:59 +01:00
poweroff.c power/sysrq: fix inconstistent help message of sysrq key 2013-04-30 17:04:10 -07:00
process.c PM/freezer: y2038, use boottime to compare tstamps 2016-02-11 11:10:43 +01:00
qos.c PM / QoS: Add debugfs support to view the list of constraints 2015-01-23 22:16:21 +01:00
snapshot.c mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd 2015-11-06 17:50:42 -08:00
suspend.c kernel/...: convert pr_warning to pr_warn 2016-03-22 15:36:02 -07:00
suspend_test.c PM / sleep: Enhance test_suspend option with repeat capability 2014-09-09 01:48:02 +02:00
swap.c PM / Hibernate: Call flush_icache_range() on pages restored in-place 2016-04-28 13:35:48 +01:00
user.c PM / hibernate: introduce "nohibernate" boot parameter 2014-06-16 23:29:39 +02:00
wakelock.c PM / autosleep: Use workqueue for user space wakeup sources garbage collector 2015-07-14 21:04:48 +02:00