[PATCH v14 36/39] kselftest/arm64: Add streaming SVE to SVE ptrace tests

Mark Brown
2022-04-19T11:25:57Z

In order to allow ptrace of streaming mode SVE registers we have added a
new regset for streaming mode which in isolation offers the same ABI as
regular SVE with a different vector type. Add this to the array of regsets
we handle, together with additional tests for the interoperation of the
two regsets.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
tools/testing/selftests/arm64/fp/sve-ptrace.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/tools/testing/selftests/arm64/fp/sve-ptrace.c b/tools/testing/selftests/arm64/fp/sve-ptrace.c
index c2564480b750..df45e4f9465c 100644
--- a/tools/testing/selftests/arm64/fp/sve-ptrace.c
+++ b/tools/testing/selftests/arm64/fp/sve-ptrace.c
@@ -26,6 +26,10 @@
#define NT_ARM_SVE 0x405
#endif

+#ifndef NT_ARM_SSVE
+#define NT_ARM_SSVE 0x40b
+#endif
+
struct vec_type {
const char *name;
unsigned long hwcap_type;
@@ -42,6 +46,13 @@ static const struct vec_type vec_types[] = {
.regset = NT_ARM_SVE,
.prctl_set = PR_SVE_SET_VL,
},
+ {
+ .name = "Streaming SVE",
+ .hwcap_type = AT_HWCAP2,
+ .hwcap = HWCAP2_SME,
+ .regset = NT_ARM_SSVE,
+ .prctl_set = PR_SME_SET_VL,
+ },
};

#define VL_TESTS (((SVE_VQ_MAX - SVE_VQ_MIN) + 1) * 4)
--
2.30.2