This is raised by using an %asi < 0x80 in user-mode.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/sparc/cpu_loop.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index 3af791455f..42e92ef859 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -310,6 +310,12 @@ void cpu_loop (CPUSPARCState *env)
         case TT_PRIV_INSN:
             force_sig_fault(TARGET_SIGILL, TARGET_ILL_PRVOPC, env->pc);
             break;
+#ifdef TARGET_SPARC64
+        case TT_PRIV_ACT:
+            /* Note do_privact defers to do_privop. */
+            force_sig_fault(TARGET_SIGILL, TARGET_ILL_PRVOPC, env->pc);
+            break;
+#endif
         case EXCP_ATOMIC:
             cpu_exec_step_atomic(cs);
             break;
-- 
2.34.1