[PATCH v2 01/14] selftests/arm64: Remove big-endian support
COLD25d
REVIEWED: 17 (17M)
From: Will Deacon <will@kernel.org>
Date: 2026-09-07 16:37:44
Also in:
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Subsystem:
arm64 port (aarch64 architecture), kernel selftest framework, restartable sequences support, the rest · Maintainers:
Catalin Marinas, Will Deacon, Shuah Khan, Shuah Khan, Mathieu Desnoyers, Peter Zijlstra, "Paul E. McKenney", Boqun Feng, Linus Torvalds
Revision v2 of 3 in this series; 4 review trailers (1 from subsystem maintainers).
Revisions (3)
- v1 [diff vs current]
- v2 current
- v3 [diff vs current]
Big-endian support on arm64 depends on BROKEN, so the arm64 selftests do not need to worry about testing this configuration any more. Remove the 128-bit byte-swapping helper from the fp-ptrace test and the big-endian definition of RSEQ_SIG_DATA from the rseq test. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Marc Zyngier <maz@kernel.org> Acked-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Will Deacon <will@kernel.org> --- tools/testing/selftests/arm64/fp/fp-ptrace.c | 19 +------------------ tools/testing/selftests/rseq/rseq-arm64.h | 5 ----- 2 files changed, 1 insertion(+), 23 deletions(-)
diff --git a/tools/testing/selftests/arm64/fp/fp-ptrace.c b/tools/testing/selftests/arm64/fp/fp-ptrace.c
index b435837c8c0e..9b184d78f4fd 100644
--- a/tools/testing/selftests/arm64/fp/fp-ptrace.c
+++ b/tools/testing/selftests/arm64/fp/fp-ptrace.c@@ -115,23 +115,6 @@ static void handle_alarm(int sig, siginfo_t *info, void *context) got_alarm = true; } -#ifdef CONFIG_CPU_BIG_ENDIAN -static __uint128_t arm64_cpu_to_le128(__uint128_t x) -{ - u64 a = swab64(x); - u64 b = swab64(x >> 64); - - return ((__uint128_t)a << 64) | b; -} -#else -static __uint128_t arm64_cpu_to_le128(__uint128_t x) -{ - return x; -} -#endif - -#define arm64_le128_to_cpu(x) arm64_cpu_to_le128(x) - static bool sve_supported(void) { return getauxval(AT_HWCAP) & HWCAP_SVE;
@@ -932,7 +915,7 @@ static void fpsimd_to_sve(__uint128_t *v, char *z, int vl) for (i = 0; i < __SVE_NUM_ZREGS; i++) { p = (__uint128_t *)&z[__SVE_ZREG_OFFSET(vq, i)]; - *p = arm64_cpu_to_le128(v[i]); + *p = v[i]; } }
diff --git a/tools/testing/selftests/rseq/rseq-arm64.h b/tools/testing/selftests/rseq/rseq-arm64.h
index 21e1626a7235..f9fecf941bf2 100644
--- a/tools/testing/selftests/rseq/rseq-arm64.h
+++ b/tools/testing/selftests/rseq/rseq-arm64.h@@ -12,12 +12,7 @@ * matches code endianness. */ #define RSEQ_SIG_CODE 0xd428bc00 /* BRK #0x45E0. */ - -#ifdef __AARCH64EB__ -#define RSEQ_SIG_DATA 0x00bc28d4 /* BRK #0x45E0. */ -#else #define RSEQ_SIG_DATA RSEQ_SIG_CODE -#endif #define RSEQ_SIG RSEQ_SIG_DATA
--
2.55.0.979.g7e5102b832-goog