James Morse 71710cd35a arm64: suspend: Reconfigure PSTATE after resume from idle ... commit d08544127d upstream. The suspend/resume path in kernel/sleep.S, as used by cpu-idle, does not save/restore PSTATE. As a result of this cpufeatures that were detected and have bits in PSTATE get lost when we resume from idle. UAO gets set appropriately on the next context switch. PAN will be re-enabled next time we return from user-space, but on a preemptible kernel we may run work accessing user space before this point. Add code to re-enable theses two features in __cpu_suspend_exit(). We re-use uao_thread_switch() passing current. Signed-off-by: James Morse <james.morse@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> [Removed UAO hooks and commit-message references: this feature is not present in v4.4] Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2016-12-08 07:15:25 +01:00
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boot	arm64: dts: rockchip: add reset saradc node for rk3368 SoCs	2016-09-07 08:32:41 +02:00
configs	arm64 fixes and clean-ups:	2015-11-12 15:33:11 -08:00
crypto	crypto: arm64/aes-ctr - fix NULL dereference in tail processing	2016-09-30 10:18:34 +02:00
include	arm64: cpufeature: Schedule enable() calls instead of calling them via IPI	2016-12-08 07:15:24 +01:00
kernel	arm64: suspend: Reconfigure PSTATE after resume from idle	2016-12-08 07:15:25 +01:00
kvm	arm64: KVM: Configure TCR_EL2.PS at runtime	2016-09-15 08:27:43 +02:00
lib	arm64: add KASAN support	2015-10-12 17:46:36 +01:00
mm	arm64: mm: Set PSTATE.PAN from the cpu_enable_pan() call	2016-12-08 07:15:24 +01:00
net	arm64: bpf: add 'store immediate' instruction	2015-12-03 11:38:31 -05:00
xen	arm: xen: implement multicall hypercall support.	2014-04-24 13:09:46 +01:00
Kconfig	irqchip/gicv3-its: numa: Enable workaround for Cavium thunderx erratum 23144	2016-09-15 08:27:47 +02:00
Kconfig.debug	arm64: remove redundant FRAME_POINTER kconfig option and force to select it	2015-11-10 10:36:00 +00:00
Kconfig.platforms	ARM: DT updates for v4.4	2015-11-10 15:06:26 -08:00
Makefile	arm64: errata: Add -mpc-relative-literal-loads to build flags	2016-03-03 15:07:08 -08:00