On 02.09.21 16:17, Tom Rini wrote:
On Tue, Aug 17, 2021 at 10:48:27AM +0200, Stefan Roese wrote:

This patch enables the use of the optimized memset(), memmove() &
memcpy() versions recently added on ARM64.

Signed-off-by: Stefan Roese <s...@denx.de>
---

Changes in v5:
- memmove is now auto-selected (or deselected) with the memcpy
   Kconfig selection as it's entry is the same as memcpy for ARM64

Changes in v3:
- Add memmove as well

  arch/arm/Kconfig              | 37 +++++++++++++++++++++++++++++------
  arch/arm/include/asm/string.h |  4 ++++
  2 files changed, 35 insertions(+), 6 deletions(-)

This gives a ton of build failures for me, using gcc-9.2.0 (from
kernel.org) along the lines of:
Building current source for 1 boards (1 thread, 16 jobs per thread)
    aarch64:  +   j721e_evm_a72
+(j721e_evm_a72) aarch64-linux-ar: warning: arch/arm/lib/memset-arm64.o: 
unsupported GNU_PROPERTY_TYPE (5) type: 0xc0000000
+(j721e_evm_a72) aarch64-linux-ar: warning: arch/arm/lib/memcpy-arm64.o: 
unsupported GNU_PROPERTY_TYPE (5) type: 0xc0000000
+(j721e_evm_a72) aarch64-linux-ld.bfd: warning: arch/arm/lib/memset-arm64.o: 
unsupported GNU_PROPERTY_TYPE (5) type: 0xc0000000
+(j721e_evm_a72) aarch64-linux-ld.bfd: warning: arch/arm/lib/memcpy-arm64.o: 
unsupported GNU_PROPERTY_TYPE (5) type: 0xc0000000
+(j721e_evm_a72) aarch64-linux-objcopy: warning: u-boot: unsupported 
GNU_PROPERTY_TYPE (5) type: 0xc0000000
+(j721e_evm_a72) aarch64-linux-objdump: warning: u-boot: unsupported 
GNU_PROPERTY_TYPE (5) type: 0xc0000000
+(j721e_evm_a72) aarch64-linux-nm: warning: u-boot: unsupported 
GNU_PROPERTY_TYPE (5) type: 0xc0000000
+(j721e_evm_a72) tools/relocate-rela: bad rela bounds
+(j721e_evm_a72) make[1]: *** [u-boot-nodtb.bin] Error 1
+(j721e_evm_a72) make: *** [sub-make] Error 2

I did not notice this, as I'm currently compiling locally with gcc-10.
Using gcc-9.4 also from kernel.org also works fine. gcc-9.2 throws these
errors.

Should we switch to gcc-9.4? I could also add something like this as a
dependency to the Kconfig entries:

https://patchwork.kernel.org/project/linux-arm-kernel/patch/20200619123550.48098-1-broo...@kernel.org/

Thanks,
Stefan

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