diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-30 06:38:44 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-30 06:38:44 -0400 |
| commit | bdc065666a591fddc4e55cbdcd6c7b02f289b5ff (patch) | |
| tree | acb92182d7c28a8d5176feb99fd7fb110a693ab7 /arch/arm64/kernel/suspend.c | |
| parent | 32774ef3e4bb339cec19655946996a8c50063be4 (diff) | |
| parent | a909d3e636995ba7c349e2ca5dbb528154d4ac30 (diff) | |
Merge 4.9-rc3 into staging-next
This resolves a merge issue with
drivers/staging/iio/accel/sca3000_core.c and we want the fixes all in
here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/kernel/suspend.c')
| -rw-r--r-- | arch/arm64/kernel/suspend.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c index ad734142070d..bb0cd787a9d3 100644 --- a/arch/arm64/kernel/suspend.c +++ b/arch/arm64/kernel/suspend.c @@ -1,8 +1,11 @@ #include <linux/ftrace.h> #include <linux/percpu.h> #include <linux/slab.h> +#include <asm/alternative.h> #include <asm/cacheflush.h> +#include <asm/cpufeature.h> #include <asm/debug-monitors.h> +#include <asm/exec.h> #include <asm/pgtable.h> #include <asm/memory.h> #include <asm/mmu_context.h> @@ -50,6 +53,14 @@ void notrace __cpu_suspend_exit(void) set_my_cpu_offset(per_cpu_offset(cpu)); /* + * PSTATE was not saved over suspend/resume, re-enable any detected + * features that might not have been set correctly. + */ + asm(ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, + CONFIG_ARM64_PAN)); + uao_thread_switch(current); + + /* * Restore HW breakpoint registers to sane values * before debug exceptions are possibly reenabled * through local_dbg_restore. |