[PATCH v3 01/13] selftests/arm64: Remove big-endian support

[Will Deacon <will@kernel.org>]

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
 
-- 
2.55.0.1082.g2b9226bbc0-goog