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From: | Richard Henderson |
Subject: | Re: [PATCH v3 19/20] tests/tcg/aarch64: add SVE iotcl test |
Date: | Wed, 11 Dec 2019 18:37:56 -0800 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.1 |
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~
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