Re: [Qemu-devel] [PATCH v2 5/5] target/arm: Exit after clearing interrupt mask

["Alex Bennée" <alex.bennee@linaro.org>]

Richard Henderson <rth@twiddle.net> writes:

> Exit to cpu loop so we reevaluate cpu_arm_hw_interrupts.
>
> Cc: qemu-arm@nongnu.org
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Richard Henderson <rth@twiddle.net>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>

> ---
>  target/arm/translate-a64.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
> index 860e279..e55547d 100644
> --- a/target/arm/translate-a64.c
> +++ b/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:


--
Alex Bennée