1 /******************************************************************************
4 * Linux-specific hypervisor handling.
6 * Copyright (c) 2002-2004, K A Fraser
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation; or, when distributed
11 * separately from the Linux kernel or incorporated into other
12 * software packages, subject to the following license:
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this source file (the "Software"), to deal in the Software without
16 * restriction, including without limitation the rights to use, copy, modify,
17 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
18 * and to permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
33 #ifndef _ASM_X86_XEN_HYPERVISOR_H
34 #define _ASM_X86_XEN_HYPERVISOR_H
36 /* arch/i386/kernel/setup.c */
37 extern struct shared_info *HYPERVISOR_shared_info;
38 extern struct start_info *xen_start_info;
40 enum xen_domain_type {
41 XEN_NATIVE, /* running on bare hardware */
42 XEN_PV_DOMAIN, /* running in a PV domain */
43 XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
47 extern enum xen_domain_type xen_domain_type;
49 #define xen_domain_type XEN_NATIVE
52 #define xen_domain() (xen_domain_type != XEN_NATIVE)
53 #define xen_pv_domain() (xen_domain() && \
54 xen_domain_type == XEN_PV_DOMAIN)
55 #define xen_hvm_domain() (xen_domain() && \
56 xen_domain_type == XEN_HVM_DOMAIN)
58 #ifdef CONFIG_XEN_DOM0
59 #include <xen/interface/xen.h>
61 #define xen_initial_domain() (xen_pv_domain() && \
62 xen_start_info->flags & SIF_INITDOMAIN)
63 #else /* !CONFIG_XEN_DOM0 */
64 #define xen_initial_domain() (0)
65 #endif /* CONFIG_XEN_DOM0 */
67 #endif /* _ASM_X86_XEN_HYPERVISOR_H */