1 | /* $NetBSD: features.h,v 1.1.1.2 2011/12/07 14:41:15 cegger Exp $ */ |
2 | /****************************************************************************** |
3 | * features.h |
4 | * |
5 | * Feature flags, reported by XENVER_get_features. |
6 | * |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
8 | * of this software and associated documentation files (the "Software"), to |
9 | * deal in the Software without restriction, including without limitation the |
10 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
11 | * sell copies of the Software, and to permit persons to whom the Software is |
12 | * furnished to do so, subject to the following conditions: |
13 | * |
14 | * The above copyright notice and this permission notice shall be included in |
15 | * all copies or substantial portions of the Software. |
16 | * |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
20 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
22 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
23 | * DEALINGS IN THE SOFTWARE. |
24 | * |
25 | * Copyright (c) 2006, Keir Fraser <keir@xensource.com> |
26 | */ |
27 | |
28 | #ifndef __XEN_PUBLIC_FEATURES_H__ |
29 | #define __XEN_PUBLIC_FEATURES_H__ |
30 | |
31 | /* |
32 | * If set, the guest does not need to write-protect its pagetables, and can |
33 | * update them via direct writes. |
34 | */ |
35 | #define XENFEAT_writable_page_tables 0 |
36 | |
37 | /* |
38 | * If set, the guest does not need to write-protect its segment descriptor |
39 | * tables, and can update them via direct writes. |
40 | */ |
41 | #define XENFEAT_writable_descriptor_tables 1 |
42 | |
43 | /* |
44 | * If set, translation between the guest's 'pseudo-physical' address space |
45 | * and the host's machine address space are handled by the hypervisor. In this |
46 | * mode the guest does not need to perform phys-to/from-machine translations |
47 | * when performing page table operations. |
48 | */ |
49 | #define XENFEAT_auto_translated_physmap 2 |
50 | |
51 | /* If set, the guest is running in supervisor mode (e.g., x86 ring 0). */ |
52 | #define XENFEAT_supervisor_mode_kernel 3 |
53 | |
54 | /* |
55 | * If set, the guest does not need to allocate x86 PAE page directories |
56 | * below 4GB. This flag is usually implied by auto_translated_physmap. |
57 | */ |
58 | #define XENFEAT_pae_pgdir_above_4gb 4 |
59 | |
60 | /* x86: Does this Xen host support the MMU_PT_UPDATE_PRESERVE_AD hypercall? */ |
61 | #define XENFEAT_mmu_pt_update_preserve_ad 5 |
62 | |
63 | /* x86: Does this Xen host support the MMU_{CLEAR,COPY}_PAGE hypercall? */ |
64 | #define XENFEAT_highmem_assist 6 |
65 | |
66 | /* |
67 | * If set, GNTTABOP_map_grant_ref honors flags to be placed into guest kernel |
68 | * available pte bits. |
69 | */ |
70 | #define XENFEAT_gnttab_map_avail_bits 7 |
71 | |
72 | /* x86: Does this Xen host support the HVM callback vector type? */ |
73 | #define XENFEAT_hvm_callback_vector 8 |
74 | |
75 | /* x86: pvclock algorithm is safe to use on HVM */ |
76 | #define XENFEAT_hvm_safe_pvclock 9 |
77 | |
78 | /* x86: pirq can be used by HVM guests */ |
79 | #define XENFEAT_hvm_pirqs 10 |
80 | |
81 | #define XENFEAT_NR_SUBMAPS 1 |
82 | |
83 | #endif /* __XEN_PUBLIC_FEATURES_H__ */ |
84 | |
85 | /* |
86 | * Local variables: |
87 | * mode: C |
88 | * c-set-style: "BSD" |
89 | * c-basic-offset: 4 |
90 | * tab-width: 4 |
91 | * indent-tabs-mode: nil |
92 | * End: |
93 | */ |
94 | |