diff options
| -rw-r--r-- | tools/testing/selftests/arm64/abi/hwcap.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index 6c91b4a0987e..d173e41f2123 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -33,6 +33,11 @@ */ typedef void (*sigill_fn)(void); +static void rng_sigill(void) +{ + asm volatile("mrs x0, S3_3_C2_C4_0" : : : "x0"); +} + static void sme_sigill(void) { /* RDSVL x0, #0 */ @@ -114,6 +119,13 @@ static const struct hwcap_data { bool sigill_reliable; } hwcaps[] = { { + .name = "RNG", + .at_hwcap = AT_HWCAP2, + .hwcap_bit = HWCAP2_RNG, + .cpuinfo = "rng", + .sigill_fn = rng_sigill, + }, + { .name = "SME", .at_hwcap = AT_HWCAP2, .hwcap_bit = HWCAP2_SME, |