Re: [XenPPC] [rfc] [patch] 64-bitize guest handles

[Muli Ben-Yehuda <muli@xxxxxxxxxx>]

On Tue, Jun 27, 2006 at 03:59:00PM -0500, Hollis Blanchard wrote:

>  #define __DEFINE_XEN_GUEST_HANDLE(name, type) \
> -    typedef struct { type *p; } __guest_handle_ ## name
> +    typedef union { unsigned long long l; type *p; }
>      __guest_handle_ ## name

Is this bit using unsigned long long ...
> 
>  #define DEFINE_XEN_GUEST_HANDLE(name) __DEFINE_XEN_GUEST_HANDLE(name, name)
>  #define XEN_GUEST_HANDLE(name)        __guest_handle_ ## name
> -#define set_xen_guest_handle(hnd, val)  do { (hnd).p = val; } while (0)
> +#define set_xen_guest_handle(hnd, val) \
> +    do { (hnd).l = (unsigned long)(void *)val; } while (0)

... while this one uses unsigned long - on purpose?

Cheers,
Muli

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