From d0821a3f504749878447617534ef97c3fc33a154 Mon Sep 17 00:00:00 2001
From: TuxSH <tuxsh@sfr.fr>
Date: Sat, 25 Jan 2020 16:13:16 +0000
Subject: [PATCH] thermosphere: small spinlock improvements

---
 thermosphere/src/spinlock_impl.s | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/thermosphere/src/spinlock_impl.s b/thermosphere/src/spinlock_impl.s
index ee0359629..ffece8f38 100644
--- a/thermosphere/src/spinlock_impl.s
+++ b/thermosphere/src/spinlock_impl.s
@@ -28,6 +28,7 @@
 FUNCTION spinlockLock
     mov     w2, #1
     sevl
+    prfm    pstl1keep, [x0]
     l1:
         wfe
         l2:
@@ -40,6 +41,5 @@ END_FUNCTION
 
 FUNCTION spinlockUnlock
     stlr    wzr, [x0]
-    sev
     ret
 END_FUNCTION