Re: [PATCH v11 38/40] kselftest/arm64: Add streaming SVE to SVE ptrace tests

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On 2/7/22 8:21 AM, Mark Brown wrote:
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@xxxxxxxxxx>
---
  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 4bd333768cc4..509b875cb7bb 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) * 3)


Looks good to me.

Reviewed-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>

thanks,
-- Shuah



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