:: commit c325aec14f87b02b1c27e4b83632a3912da5bc10

diff --git a/common/lib/spinup.asm_loongarch64 b/common/lib/spinup.asm_loongarch64
index a824f6b8..66c1ad71 100644
--- a/common/lib/spinup.asm_loongarch64
+++ b/common/lib/spinup.asm_loongarch64
@@ -85,6 +85,7 @@ loongarch_spinup:
         move    $t6, $zero
         move    $t7, $zero
         move    $t8, $zero
+        move    $r21, $zero
         move    $fp, $zero
         move    $s0, $zero
         move    $s1, $zero