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-rw-r--r--src/cpu/x86/sipi_vector.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cpu/x86/sipi_vector.S b/src/cpu/x86/sipi_vector.S
index ba1ecb7de6..054f30d2c4 100644
--- a/src/cpu/x86/sipi_vector.S
+++ b/src/cpu/x86/sipi_vector.S
@@ -121,7 +121,7 @@ _start:
/* Protect microcode loading. */
lock_microcode:
- lock bts $0, microcode_lock
+ lock btsl $0, microcode_lock
jc lock_microcode
load_microcode: