Re: [PATCH v2 01/28] target/xtensa: Use probe_access for itlb_hit_test

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

Richard Henderson <richard.henderson@linaro.org> writes:

> We don't actually need the result of the read, only to probe that the
> memory mapping exists.  This is exactly what probe_access does.
>
> This is also the only user of any cpu_ld*_code_ra function.
> Removing this allows the interface to be removed shortly.
>
> Acked-by: Max Filippov <jcmvbkbc@gmail.com>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

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

> ---
>  target/xtensa/mmu_helper.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/target/xtensa/mmu_helper.c b/target/xtensa/mmu_helper.c
> index f15bff306f..b01ff9399a 100644
> --- a/target/xtensa/mmu_helper.c
> +++ b/target/xtensa/mmu_helper.c
> @@ -63,10 +63,11 @@
>  void HELPER(itlb_hit_test)(CPUXtensaState *env, uint32_t vaddr)
>  {
>      /*
> -     * Attempt the memory load; we don't care about the result but
> +     * Probe the memory; we don't care about the result but
>       * only the side-effects (ie any MMU or other exception)
>       */
> -    cpu_ldub_code_ra(env, vaddr, GETPC());
> +    probe_access(env, vaddr, 1, MMU_INST_FETCH,
> +                 cpu_mmu_index(env, true), GETPC());
>  }
>  
>  void HELPER(wsr_rasid)(CPUXtensaState *env, uint32_t v)


-- 
Alex Bennée