[CRIU] [PATCH 4/8] x86: Add 32bit variant of TASK_SIZE

[Pavel Emelyanov]

On 05/11/2015 07:06 PM, Cyrill Gorcunov wrote:
> Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
> ---
>  arch/x86/include/asm/types.h | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/x86/include/asm/types.h b/arch/x86/include/asm/types.h
> index 3abb419562a9..db41b751b321 100644
> --- a/arch/x86/include/asm/types.h
> +++ b/arch/x86/include/asm/types.h
> @@ -109,7 +109,15 @@ typedef struct {
>  #define ASSIGN_TYPED(a, b) do { a = (typeof(a))b; } while (0)
>  #define ASSIGN_MEMBER(a,b,m) do { ASSIGN_TYPED((a)->m, (b)->m); } while (0)
>  
> -#define TASK_SIZE ((1UL << 47) - PAGE_SIZE)
> +#ifdef CONFIG_X86_64
> +# define TASK_SIZE	((1UL << 47) - PAGE_SIZE)
> +#else
> +/*
> + * Task size may be limited to 3G but we need a
> + * higher limit, because it's backward compatible.

Can you elaborate on this, please?

> + */
> +# define TASK_SIZE	(0xffffe000)
> +#endif
>  
>  typedef u64 auxv_t;
>  typedef u32 tls_t;
>