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Re: [PATCH v2 1/3] target/arm: Correctly bound length in sve_zcr_get_val


From: Peter Maydell
Subject: Re: [PATCH v2 1/3] target/arm: Correctly bound length in sve_zcr_get_valid_len
Date: Mon, 26 Jul 2021 11:57:05 +0100

On Fri, 23 Jul 2021 at 21:36, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Currently, our only caller is sve_zcr_len_for_el, which has
> already masked the length extracted from ZCR_ELx, so the
> masking done here is a nop.  But we will shortly have uses
> from other locations, where the length will be unmasked.
>
> Saturate the length to ARM_MAX_VQ instead of truncating to
> the low 4 bits.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM



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