Merge tag 'v5.0-rc1' into next-general

Linux 5.0-rc1

Sync to pick up LSM stacking work (which is based on -rc1).

1 files changed, 3 insertions, 6 deletions

diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index d4f7fd4550e1..6829a064aac8 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -737,10 +737,9 @@ static long prepare_for_fp_mode_switch(void *unused)
 	/*
 	 * This is icky, but we use this to simply ensure that all CPUs have
 	 * context switched, regardless of whether they were previously running
-	 * kernel or user code. This ensures that no CPU currently has its FPU
-	 * enabled, or is about to attempt to enable it through any path other
-	 * than enable_restore_fp_context() which will wait appropriately for
-	 * fp_mode_switching to be zero.
+	 * kernel or user code. This ensures that no CPU that a mode-switching
+	 * program may execute on keeps its FPU enabled (& in the old mode)
+	 * throughout the mode switch.
 	 */
 	return 0;
 }
@@ -829,8 +828,6 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
 		work_on_cpu(cpu, prepare_for_fp_mode_switch, NULL);
 	put_online_cpus();
 
-	wake_up_var(&task->mm->context.fp_mode_switching);
-
 	return 0;
 }