Re: [PATCH v5 19/22] tests/tcg/aarch64: add SVE iotcl test

[Richard Henderson]

On 1/14/20 5:09 AM, Alex Bennée wrote:
> +int main(int argc, char **argv)
> +{
> +    unsigned int sve_feature = (get_cpu_reg(ID_AA64PFR0_EL1) >> 32) & 0xf;
> +    /* Exit early if we don't support SVE at all */
> +    if (sve_feature == 0x1) {
> +        /* we also need to probe for the ioctl support */
> +        if (getauxval(AT_HWCAP) & HWCAP_SVE) {

You should only probe hwcap.


r!