Re: [PATCH 2/6] lib/lzo: enable 64-bit CTZ on Arm

[Christoph Hellwig]

>  #define LZO_USE_CTZ32	1
>  #elif defined(__i386__) || defined(__powerpc__)
>  #define LZO_USE_CTZ32	1
> -#elif defined(__arm__) && (__LINUX_ARM_ARCH__ >= 5)
> +#elif defined(__arm__)
> +#if (__LINUX_ARM_ARCH__ >= 5)
>  #define LZO_USE_CTZ32	1
>  #endif
> +#if (__LINUX_ARM_ARCH__ >= 6) && (CONFIG_THUMB2_KERNEL)
> +#define LZO_USE_CTZ64	1

All of this really needs to be driven by Kconfig symbols that
the architecture selects instead of magic arch ifdefs here.