Re: [PATCH v3 19/20] tests/tcg/aarch64: add SVE iotcl test

[Richard Henderson]

On 12/11/19 9:05 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) {
> +            return do_sve_ioctl_test();
> +        } else {
> +            printf("SKIP: no HWCAP_SVE on this system\n");
> +            return 0;
> +        }

I don't see the point in the PFR0 test.
Testing HWCAP_SVE should be sufficient.


r~