Yep, you are right. I will change code later. But now, I found an new problem, when build the kernel, I got follow message:
WARNING: EXPORT symbol "xor_block_inner_neon" [arch/arm64/lib/xor-neon.ko] version generation failed, symbol will not be versioned. I don’t know why, do you have any idea? > 在 2018年11月27日，16:17，Ard Biesheuvel <[email protected]> 写道： > > On Tue, 27 Nov 2018 at 06:28, Jackie Liu <[email protected]> wrote: >> >> In a way similar to ARM commit 09096f6a0ee2 ("ARM: 7822/1: add workaround >> for ambiguous C99 stdint.h types"), this patch redefines the macros that >> are used in stdint.h so its definitions of uint64_t and int64_t are >> compatible with those of the kernel. >> >> This patch comes from: https://patchwork.kernel.org/patch/3540001/ >> Wrote by: Ard Biesheuvel <[email protected]> >> > > OK, I remember now :-) > > So this is the reason you had two separate source files in the > previous revision. > > Could we maybe deal with this differently? Could we add a header > > arch/arm64/include/asm/neon-intrinsics.h > > that includes <arm_neon.h> after setting the preprocessor overrides > below? And reference that header from your code? > > That way, we don't have to override asm/types.h for everyone. > > > >> Signed-off-by: Jackie Liu <[email protected]> >> --- >> arch/arm64/include/uapi/asm/types.h | 26 ++++++++++++++++++++++++++ >> 1 file changed, 26 insertions(+) >> create mode 100644 arch/arm64/include/uapi/asm/types.h >> >> diff --git a/arch/arm64/include/uapi/asm/types.h >> b/arch/arm64/include/uapi/asm/types.h >> new file mode 100644 >> index 0000000..0016780 >> --- /dev/null >> +++ b/arch/arm64/include/uapi/asm/types.h >> @@ -0,0 +1,26 @@ >> +#ifndef _UAPI_ASM_TYPES_H >> +#define _UAPI_ASM_TYPES_H >> + >> +#include <asm-generic/int-ll64.h> >> + >> +/* >> + * For Aarch64, there is some ambiguity in the definition of the types below >> + * between the kernel and GCC itself. This is usually not a big deal, but it >> + * causes trouble when including GCC's version of 'stdint.h' (this is the >> file >> + * that gets included when you #include <stdint.h> on a -ffreestanding >> build). >> + * As this file also gets included implicitly when including 'arm_neon.h' >> (the >> + * NEON intrinsics support header), we need the following to work around the >> + * issue if we want to use NEON intrinsics in the kernel. >> + */ >> + >> +#ifdef __INT64_TYPE__ >> +#undef __INT64_TYPE__ >> +#define __INT64_TYPE__ __signed__ long long >> +#endif >> + >> +#ifdef __UINT64_TYPE__ >> +#undef __UINT64_TYPE__ >> +#define __UINT64_TYPE__ unsigned long long >> +#endif >> + >> +#endif /* _UAPI_ASM_TYPES_H */ >> -- >> 2.7.4 >> >> >> >> >
