Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH] arm64/sve: fix genksyms generation | Date | Mon, 17 Jun 2019 12:42:11 +0200 |
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genksyms does not understand __uint128_t, so we get a build failure in the fpsimd module when it cannot export a symbol right:
WARNING: EXPORT symbol "kernel_neon_begin" [vmlinux] version generation failed, symbol will not be versioned. /home/arnd/cross/x86_64/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld: arch/arm64/kernel/fpsimd.o: relocation R_AARCH64_ABS32 against `__crc_kernel_neon_begin' can not be used when making a shared object arch/arm64/kernel/fpsimd.o:(.data+0x0): dangerous relocation: unsupported relocation arch/arm64/kernel/fpsimd.o:(".discard.addressable"+0x0): dangerous relocation: unsupported relocation arch/arm64/kernel/fpsimd.o:(".discard.addressable"+0x8): dangerous relocation: unsupported relocation
We could teach genksyms about the type, but it's easier to just work around it by defining that type locally in a way that genksyms understands.
Fixes: 41040cf7c5f0 ("arm64/sve: Fix missing SVE/FPSIMD endianness conversions") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/arm64/kernel/fpsimd.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 07f238ef47ae..2aba07cccf50 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -400,6 +400,9 @@ static int __init sve_sysctl_init(void) { return 0; } #define ZREG(sve_state, vq, n) ((char *)(sve_state) + \ (SVE_SIG_ZREG_OFFSET(vq, n) - SVE_SIG_REGS_OFFSET)) +#ifdef __GENKSYMS__ +typedef __u64 __uint128_t[2]; +#endif #ifdef CONFIG_CPU_BIG_ENDIAN static __uint128_t arm64_cpu_to_le128(__uint128_t x) { -- 2.20.0
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