debuggers.hg

view xen/include/public/arch-x86/cpuid.h @ 0:7d21f7218375

Exact replica of unstable on 051908 + README-this
author Mukesh Rathor
date Mon May 19 15:34:57 2008 -0700 (2008-05-19)
parents
children 0ab058a55c24
line source
1 /******************************************************************************
2 * arch-x86/cpuid.h
3 *
4 * CPUID interface to Xen.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Copyright (c) 2007 Citrix Systems, Inc.
25 *
26 * Authors:
27 * Keir Fraser <keir.fraser@citrix.com>
28 */
30 #ifndef __XEN_PUBLIC_ARCH_X86_CPUID_H__
31 #define __XEN_PUBLIC_ARCH_X86_CPUID_H__
33 /* Xen identification leaves start at 0x40000000. */
34 #define XEN_CPUID_FIRST_LEAF 0x40000000
35 #define XEN_CPUID_LEAF(i) (XEN_CPUID_FIRST_LEAF + (i))
37 /*
38 * Leaf 1 (0x40000000)
39 * EAX: Largest Xen-information leaf. All leaves up to an including @EAX
40 * are supported by the Xen host.
41 * EBX-EDX: "XenVMMXenVMM" signature, allowing positive identification
42 * of a Xen host.
43 */
44 #define XEN_CPUID_SIGNATURE_EBX 0x566e6558 /* "XenV" */
45 #define XEN_CPUID_SIGNATURE_ECX 0x65584d4d /* "MMXe" */
46 #define XEN_CPUID_SIGNATURE_EDX 0x4d4d566e /* "nVMM" */
48 /*
49 * Leaf 2 (0x40000001)
50 * EAX[31:16]: Xen major version.
51 * EAX[15: 0]: Xen minor version.
52 * EBX-EDX: Reserved (currently all zeroes).
53 */
55 /*
56 * Leaf 3 (0x40000002)
57 * EAX: Number of hypercall transfer pages. This register is always guaranteed
58 * to specify one hypercall page.
59 * EBX: Base address of Xen-specific MSRs.
60 * ECX: Features 1. Unused bits are set to zero.
61 * EDX: Features 2. Unused bits are set to zero.
62 */
64 /* Does the host support MMU_PT_UPDATE_PRESERVE_AD for this guest? */
65 #define _XEN_CPUID_FEAT1_MMU_PT_UPDATE_PRESERVE_AD 0
66 #define XEN_CPUID_FEAT1_MMU_PT_UPDATE_PRESERVE_AD (1u<<0)
68 #endif /* __XEN_PUBLIC_ARCH_X86_CPUID_H__ */