• Huacai Chen's avatar
    LoongArch: Make -mstrict-align configurable · 41596803
    Huacai Chen authored
    Introduce Kconfig option ARCH_STRICT_ALIGN to make -mstrict-align be
    configurable.
    
    Not all LoongArch cores support h/w unaligned access, we can use the
    -mstrict-align build parameter to prevent unaligned accesses.
    
    CPUs with h/w unaligned access support:
    Loongson-2K2000/2K3000/3A5000/3C5000/3D5000.
    
    CPUs without h/w unaligned access support:
    Loongson-2K500/2K1000.
    
    This option is enabled by default to make the kernel be able to run on
    all LoongArch systems. But you can disable it manually if you want to
    run kernel only on systems with h/w unaligned access support in order to
    optimise for performance.
    Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
    41596803
Kconfig 15.7 KB