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[v13,36/39] kselftest/arm64: Add streaming SVE to SVE ptrace tests

Message ID 20220408114328.1401034-37-broonie@kernel.org (mailing list archive)
State Accepted
Commit fa23100bbad0748f6503511b109cfec955e4183d
Headers show
Series arm64/sme: Initial support for the Scalable Matrix Extension | expand

Commit Message

Mark Brown April 8, 2022, 11:43 a.m. UTC 
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(+)
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Patch

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)