diff options
Diffstat (limited to 'xen/include/public/arch-x86/xen.h')
| -rw-r--r-- | xen/include/public/arch-x86/xen.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/xen/include/public/arch-x86/xen.h b/xen/include/public/arch-x86/xen.h index fff882425d..f5c58a6467 100644 --- a/xen/include/public/arch-x86/xen.h +++ b/xen/include/public/arch-x86/xen.h @@ -38,12 +38,21 @@ typedef type * __guest_handle_ ## name #endif +/* + * XEN_GUEST_HANDLE represents a guest pointer, when passed as a field + * in a struct in memory. + * XEN_GUEST_HANDLE_PARAM represent a guest pointer, when passed as an + * hypercall argument. + * XEN_GUEST_HANDLE_PARAM and XEN_GUEST_HANDLE are the same on X86 but + * they might not be on other architectures. + */ #define __DEFINE_XEN_GUEST_HANDLE(name, type) \ ___DEFINE_XEN_GUEST_HANDLE(name, type); \ ___DEFINE_XEN_GUEST_HANDLE(const_##name, const type) #define DEFINE_XEN_GUEST_HANDLE(name) __DEFINE_XEN_GUEST_HANDLE(name, name) #define __XEN_GUEST_HANDLE(name) __guest_handle_ ## name #define XEN_GUEST_HANDLE(name) __XEN_GUEST_HANDLE(name) +#define XEN_GUEST_HANDLE_PARAM(name) XEN_GUEST_HANDLE(name) #define set_xen_guest_handle_raw(hnd, val) do { (hnd).p = val; } while (0) #ifdef __XEN_TOOLS__ #define get_xen_guest_handle(val, hnd) do { val = (hnd).p; } while (0) |