ia64/linux-2.6.18-xen.hg

view include/asm-i386/mtrr.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 /* Generic MTRR (Memory Type Range Register) ioctls.
3 Copyright (C) 1997-1999 Richard Gooch
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 Richard Gooch may be reached by email at rgooch@atnf.csiro.au
20 The postal address is:
21 Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
22 */
23 #ifndef _LINUX_MTRR_H
24 #define _LINUX_MTRR_H
26 #include <linux/ioctl.h>
27 #include <linux/errno.h>
29 #define MTRR_IOCTL_BASE 'M'
31 struct mtrr_sentry
32 {
33 unsigned long base; /* Base address */
34 unsigned int size; /* Size of region */
35 unsigned int type; /* Type of region */
36 };
38 struct mtrr_gentry
39 {
40 unsigned int regnum; /* Register number */
41 unsigned long base; /* Base address */
42 unsigned int size; /* Size of region */
43 unsigned int type; /* Type of region */
44 };
46 /* These are the various ioctls */
47 #define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
48 #define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)
49 #define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry)
50 #define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
51 #define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry)
52 #define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry)
53 #define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry)
54 #define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry)
55 #define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
56 #define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry)
58 /* These are the region types */
59 #define MTRR_TYPE_UNCACHABLE 0
60 #define MTRR_TYPE_WRCOMB 1
61 /*#define MTRR_TYPE_ 2*/
62 /*#define MTRR_TYPE_ 3*/
63 #define MTRR_TYPE_WRTHROUGH 4
64 #define MTRR_TYPE_WRPROT 5
65 #define MTRR_TYPE_WRBACK 6
66 #define MTRR_NUM_TYPES 7
68 #ifdef __KERNEL__
70 /* The following functions are for use by other drivers */
71 # ifdef CONFIG_MTRR
72 extern int mtrr_add (unsigned long base, unsigned long size,
73 unsigned int type, char increment);
74 extern int mtrr_add_page (unsigned long base, unsigned long size,
75 unsigned int type, char increment);
76 extern int mtrr_del (int reg, unsigned long base, unsigned long size);
77 extern int mtrr_del_page (int reg, unsigned long base, unsigned long size);
78 extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi);
79 extern void mtrr_ap_init(void);
80 extern void mtrr_bp_init(void);
81 # else
82 static __inline__ int mtrr_add (unsigned long base, unsigned long size,
83 unsigned int type, char increment)
84 {
85 return -ENODEV;
86 }
87 static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
88 unsigned int type, char increment)
89 {
90 return -ENODEV;
91 }
92 static __inline__ int mtrr_del (int reg, unsigned long base,
93 unsigned long size)
94 {
95 return -ENODEV;
96 }
97 static __inline__ int mtrr_del_page (int reg, unsigned long base,
98 unsigned long size)
99 {
100 return -ENODEV;
101 }
103 static __inline__ void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) {;}
105 #define mtrr_ap_init() do {} while (0)
106 #define mtrr_bp_init() do {} while (0)
107 # endif
109 #endif
111 #endif /* _LINUX_MTRR_H */