sys/smp: Zero gp in riscv64 AP trampoline
diff --git a/common/sys/smp_trampoline.asm_riscv64 b/common/sys/smp_trampoline.asm_riscv64
index 35b27a9b..eb5802ba 100644
--- a/common/sys/smp_trampoline.asm_riscv64
+++ b/common/sys/smp_trampoline.asm_riscv64
@@ -65,6 +65,7 @@ smp_trampoline_start:
mv t5, zero
mv t6, zero
mv tp, zero
+ mv gp, zero
mv ra, zero
li t0, (2 << 32)
