1 files changed, 5 insertions, 6 deletions

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 8eb169e45584..836ef6575f01 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -120,12 +120,11 @@ void cpu_idle(void)
         current_thread_info()->status |= TS_POLLING;
 
         /*
-         * If we're the non-boot CPU, nothing set the PDA stack
-         * canary up for us - and if we are the boot CPU we have
-         * a 0 stack canary. This is a good place for updating
-         * it, as we wont ever return from this function (so the
-         * invalid canaries already on the stack wont ever
-         * trigger):
+         * If we're the non-boot CPU, nothing set the stack canary up
+         * for us.  CPU0 already has it initialized but no harm in
+         * doing it again.  This is a good place for updating it, as
+         * we wont ever return from this function (so the invalid
+         * canaries already on the stack wont ever trigger).
          */
         boot_init_stack_canary();