Validate that SVE B16B16 support is reported correctly and consistently to userspace.
Signed-off-by: Mark Brown broonie@kernel.org --- tools/testing/selftests/arm64/abi/hwcap.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index e3d262831d91..d8a144213d04 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -226,6 +226,12 @@ static void sveaes_sigill(void) asm volatile(".inst 0x4522e400" : : : "z0"); }
+static void sveb16b16_sigill(void) +{ + /* BFADD ZA.H[W0, 0], {Z0.H-Z1.H} */ + asm volatile(".inst 0xC1E41C00" : : : ); +} + static void svepmull_sigill(void) { /* PMULLB Z0.Q, Z0.D, Z0.D */ @@ -493,6 +499,13 @@ static const struct hwcap_data { .cpuinfo = "sveaes", .sigill_fn = sveaes_sigill, }, + { + .name = "SVE2 B16B16", + .at_hwcap = AT_HWCAP2, + .hwcap_bit = HWCAP2_SVE_B16B16, + .cpuinfo = "sveb16b16", + .sigill_fn = sveb16b16_sigill, + }, { .name = "SVE2 PMULL", .at_hwcap = AT_HWCAP2,