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/******************************************************************************
* guest_access.h
*
* Copyright (c) 2006, K A Fraser
*/
#ifndef __ASM_X86_GUEST_ACCESS_H__
#define __ASM_X86_GUEST_ACCESS_H__
#include <asm/uaccess.h>
#include <asm/paging.h>
#include <asm/hvm/support.h>
#include <asm/hvm/guest_access.h>
/* Raw access functions: no type checking. */
#define raw_copy_to_guest(dst, src, len) \
(is_hvm_vcpu(current) ? \
copy_to_user_hvm((dst), (src), (len)) : \
copy_to_guest_pv(dst, src, len))
#define raw_copy_from_guest(dst, src, len) \
(is_hvm_vcpu(current) ? \
copy_from_user_hvm((dst), (src), (len)) : \
copy_from_guest_pv(dst, src, len))
#define raw_clear_guest(dst, len) \
(is_hvm_vcpu(current) ? \
clear_user_hvm((dst), (len)) : \
clear_guest_pv(dst, len))
#define __raw_copy_to_guest(dst, src, len) \
(is_hvm_vcpu(current) ? \
copy_to_user_hvm((dst), (src), (len)) : \
__copy_to_guest_pv(dst, src, len))
#define __raw_copy_from_guest(dst, src, len) \
(is_hvm_vcpu(current) ? \
copy_from_user_hvm((dst), (src), (len)) : \
__copy_from_guest_pv(dst, src, len))
/*
* Pre-validate a guest handle.
* Allows use of faster __copy_* functions.
*/
#define guest_handle_okay(hnd, nr) \
(paging_mode_external(current->domain) || \
array_access_ok((hnd).p, (nr), sizeof(*(hnd).p)))
#define guest_handle_subrange_okay(hnd, first, last) \
(paging_mode_external(current->domain) || \
array_access_ok((hnd).p + (first), \
(last)-(first)+1, \
sizeof(*(hnd).p)))
#endif /* __ASM_X86_GUEST_ACCESS_H__ */
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
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