cpu: Introduce smt_lowest()

Recent CPUs have introduced a lower SMT priority. This uses the
Linux pattern of executing priority nops in descending order to
get a simple portable way to put the CPU into lowest SMT priority.

Introduce smt_lowest() and use it in place of smt_very_low and
smt_low ; smt_very_low sequences.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/core/cpu.c b/core/cpu.c
index c7e650d..a03cf91 100644
--- a/core/cpu.c
+++ b/core/cpu.c
@@ -871,7 +871,7 @@ void cpu_bringup(void)
 
 		/* Add a callin timeout ?  If so, call cpu_remove_node(t). */
 		while (t->state != cpu_state_active) {
-			smt_very_low();
+			smt_lowest();
 			sync();
 		}
 		smt_medium();