Commit fa23100b authored Apr 19, 2022 by Mark Brown Committed by Catalin Marinas Apr 28, 2022

kselftest/arm64: Add streaming SVE to SVE ptrace tests



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>
Link: https://lore.kernel.org/r/20220419112247.711548-37-broonie@kernel.org


Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

parent 4963aeb3

tools/testing/selftests/arm64/fp/sve-ptrace.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -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)