diff options
| author | Yifan Wu <wuyifan50@huawei.com> | 2026-03-05 04:36:37 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-25 13:05:42 +0300 |
| commit | c7919c1c1d805055a0f7eeae89affda27947e783 (patch) | |
| tree | 586a5000353f706a46df88cd7ba95c6cac02a922 /tools/testing | |
| parent | a0fb59f527d03c60b2cd547cfae4a842ad84670f (diff) | |
| download | linux-c7919c1c1d805055a0f7eeae89affda27947e783.tar.xz | |
selftest/arm64: Fix sve2p1_sigill() to hwcap test
[ Upstream commit d87c828daa7ead9763416f75cc416496969cf1dc ]
The FEAT_SVE2p1 is indicated by ID_AA64ZFR0_EL1.SVEver. However,
the BFADD requires the FEAT_SVE_B16B16, which is indicated by
ID_AA64ZFR0_EL1.B16B16. This could cause the test to incorrectly
fail on a CPU that supports FEAT_SVE2.1 but not FEAT_SVE_B16B16.
LD1Q Gather load quadwords which is decoded from SVE encodings and
implied by FEAT_SVE2p1.
Fixes: c5195b027d29 ("kselftest/arm64: Add SVE 2.1 to hwcap test")
Signed-off-by: Yifan Wu <wuyifan50@huawei.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/arm64/abi/hwcap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index e3d262831d91..311a2a65f7cf 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -216,8 +216,8 @@ static void sve2_sigill(void) static void sve2p1_sigill(void) { - /* BFADD Z0.H, Z0.H, Z0.H */ - asm volatile(".inst 0x65000000" : : : "z0"); + /* LD1Q {Z0.Q}, P0/Z, [Z0.D, X0] */ + asm volatile(".inst 0xC400A000" : : : "z0"); } static void sveaes_sigill(void) |