Re: [PATCH] x86/vdso: Add ARCH_MAP_VDSO_X32 if CONFIG_X86_X32_ABI.

[Dmitry Safonov]

On 09/17/2016 03:51 AM, Vinson Lee wrote:
> vdso_image_x32 is generated if CONFIG_X86_X32_ABI.
>
> This patch fixes this build error on CentOS 6.8 with gcc 4.4.
>
>   LD      init/built-in.o
> arch/x86/built-in.o: In function `do_arch_prctl':
> (.text+0x27466): undefined reference to `vdso_image_x32'
> arch/x86/built-in.o: In function `do_arch_prctl':
> (.text+0x27477): undefined reference to `vdso_image_x32'
>
> Fixes: 2eefd8789698 ("x86/arch_prctl/vdso: Add ARCH_MAP_VDSO_*")
> Signed-off-by: Vinson Lee <vlee@xxxxxxxxxxxxxxx>

Thanks!
Reviewed-by: Dmitry Safonov <dsafonov@xxxxxxxxxxxxx>

Ifdeffery in arch/x86/include/asm/vdso.h dazzled my eyes.

--
             Dmitry