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xen: add missing definitions for xen grant table which ia64/xen needs

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Add xen handles realted definitions for grant table which ia64/xen
needs.
Pointer argumsnts for ia64/xen hypercall are passed in pseudo physical
address (guest physical address) so that it is required to convert
guest kernel virtual address into pseudo physical address right before
issuing hypercall.
The xen guest handle represents such arguments.
Define necessary handles and helper functions.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Isaku Yamahata
2008-04-02 10:53:52 -07:00
committed by Ingo Molnar
parent 2eb6d5eb48
commit 87e27cf628
3 changed files with 33 additions and 4 deletions
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24
include/asm-x86/xen/interface.h
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@@ -22,6 +22,30 @@
#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
#define GUEST_HANDLE(name) __guest_handle_ ## name
#ifdef __XEN__
#if defined(__i386__)
#define set_xen_guest_handle(hnd, val) \
do { \
if (sizeof(hnd) == 8) \
*(uint64_t *)&(hnd) = 0; \
(hnd).p = val; \
} while (0)
#elif defined(__x86_64__)
#define set_xen_guest_handle(hnd, val) do { (hnd).p = val; } while (0)
#endif
#else
#if defined(__i386__)
#define set_xen_guest_handle(hnd, val) \
do { \
if (sizeof(hnd) == 8) \
*(uint64_t *)&(hnd) = 0; \
(hnd) = val; \
} while (0)
#elif defined(__x86_64__)
#define set_xen_guest_handle(hnd, val) do { (hnd) = val; } while (0)
#endif
#endif
#ifndef __ASSEMBLY__
/* Guest handles for primitive C types. */
__DEFINE_GUEST_HANDLE(uchar, unsigned char);