[PATCH 3/3] powerpc/vdso: Disable building the 32-bit VDSO on little endian

[Stephen Rothwell]

Hi Michael,

On Wed, 22 Apr 2015 15:40:36 +1000 Michael Ellerman <mpe at ellerman.id.au> wrote:
>
> diff --git a/arch/powerpc/include/asm/vdso.h b/arch/powerpc/include/asm/vdso.h
> index c53f5f6d1761..f455adb471e7 100644
> --- a/arch/powerpc/include/asm/vdso.h
> +++ b/arch/powerpc/include/asm/vdso.h
> @@ -19,6 +19,7 @@
>  
>  /* Offsets relative to thread->vdso_base */
>  extern unsigned long vdso64_rt_sigtramp;
> +
>  extern unsigned long vdso32_sigtramp;
>  extern unsigned long vdso32_rt_sigtramp;

You could drop this hunk :-)

> diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
> index 8331d0bef0fb..c2bd45187315 100644
> --- a/arch/powerpc/kernel/vdso.c
> +++ b/arch/powerpc/kernel/vdso.c
> @@ -49,12 +49,15 @@
>  /* The alignment of the vDSO */
>  #define VDSO_ALIGNMENT	(1 << 16)
>  
> -extern char vdso32_start, vdso32_end;
> -static void *vdso32_kbase = &vdso32_start;
>  static unsigned int vdso32_pages;
> +static void *vdso32_kbase;
>  static struct page **vdso32_pagelist;
> -unsigned long vdso32_sigtramp;
> -unsigned long vdso32_rt_sigtramp;
> +unsigned long vdso32_sigtramp = 0;
> +unsigned long vdso32_rt_sigtramp = 0;

And they should be zero anyway, right?

-- 
Cheers,
Stephen Rothwell                    sfr at canb.auug.org.au
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 819 bytes
Desc: OpenPGP digital signature
URL: <http://lists.ozlabs.org/pipermail/linuxppc-dev/attachments/20150423/5c27f999/attachment.sig>