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kselftest/arm64: Verify HWCAP2_SVE_B16B16 

Validate that SVE B16B16 support is reported correctly and consistently to
userspace.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230915-arm64-zfr-b16b16-el0-v1-2-f9aba807bdb5@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2023-09-15 13:18:07 +01:00 committed by Catalin Marinas
parent 5d5b4e8c2d
commit 3accaef1f6
1 changed files with 13 additions and 0 deletions
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13
tools/testing/selftests/arm64/abi/hwcap.c
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@ -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,