target/arm: Exit after clearing aarch64 interrupt mask

Exit to cpu loop so we reevaluate cpu_arm_hw_interrupts.
Tested-by: NEmilio G. Cota <cota@braap.org>
Tested-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NEmilio G. Cota <cota@braap.org>
Reviewed-by: NAlex Bennée <alex.bennee@linaro.org>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

target/arm/translate-a64.c

@@ -1422,7 +1422,9 @@ static void handle_msr_i(DisasContext *s, uint32_t insn,
         gen_helper_msr_i_pstate(cpu_env, tcg_op, tcg_imm);
         tcg_temp_free_i32(tcg_imm);
         tcg_temp_free_i32(tcg_op);
-        s->is_jmp = DISAS_UPDATE;
+        /* For DAIFClear, exit the cpu loop to re-evaluate pending IRQs.  */
+        gen_a64_set_pc_im(s->pc);
+        s->is_jmp = (op == 0x1f ? DISAS_EXIT : DISAS_JUMP);
         break;
     }
     default:
@@ -11369,6 +11371,9 @@ void gen_intermediate_code_a64(ARMCPU *cpu, TranslationBlock *tb)
         case DISAS_JUMP:
             tcg_gen_lookup_and_goto_ptr(cpu_pc);
             break;
+        case DISAS_EXIT:
+            tcg_gen_exit_tb(0);
+            break;
         case DISAS_TB_JUMP:
         case DISAS_EXC:
         case DISAS_SWI: