ia64/linux-2.6.18-xen.hg

view include/asm-m32r/processor.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 #ifndef _ASM_M32R_PROCESSOR_H
2 #define _ASM_M32R_PROCESSOR_H
4 /*
5 * include/asm-m32r/processor.h
6 *
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
9 * for more details.
10 *
11 * Copyright (C) 1994 Linus Torvalds
12 * Copyright (C) 2001 Hiroyuki Kondo, Hirokazu Takata, and Hitoshi Yamamoto
13 * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org>
14 */
16 #include <linux/kernel.h>
17 #include <asm/cache.h>
18 #include <asm/ptrace.h> /* pt_regs */
20 /*
21 * Default implementation of macro that returns current
22 * instruction pointer ("program counter").
23 */
24 #define current_text_addr() ({ __label__ _l; _l: &&_l; })
26 /*
27 * CPU type and hardware bug flags. Kept separately for each CPU.
28 * Members of this structure are referenced in head.S, so think twice
29 * before touching them. [mj]
30 */
32 struct cpuinfo_m32r {
33 unsigned long pgtable_cache_sz;
34 unsigned long cpu_clock;
35 unsigned long bus_clock;
36 unsigned long timer_divide;
37 unsigned long loops_per_jiffy;
38 };
40 /*
41 * capabilities of CPUs
42 */
44 extern struct cpuinfo_m32r boot_cpu_data;
46 #ifdef CONFIG_SMP
47 extern struct cpuinfo_m32r cpu_data[];
48 #define current_cpu_data cpu_data[smp_processor_id()]
49 #else
50 #define cpu_data (&boot_cpu_data)
51 #define current_cpu_data boot_cpu_data
52 #endif
54 /*
55 * User space process size: 2GB (default).
56 */
57 #ifdef CONFIG_MMU
58 #define TASK_SIZE (0x80000000UL)
59 #else
60 #define TASK_SIZE (0x00400000UL)
61 #endif
63 /* This decides where the kernel will search for a free chunk of vm
64 * space during mmap's.
65 */
66 #define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)
68 typedef struct {
69 unsigned long seg;
70 } mm_segment_t;
72 #define MAX_TRAPS 10
74 struct debug_trap {
75 int nr_trap;
76 unsigned long addr[MAX_TRAPS];
77 unsigned long insn[MAX_TRAPS];
78 };
80 struct thread_struct {
81 unsigned long address;
82 unsigned long trap_no; /* Trap number */
83 unsigned long error_code; /* Error code of trap */
84 unsigned long lr; /* saved pc */
85 unsigned long sp; /* user stack pointer */
86 struct debug_trap debug_trap;
87 };
89 #define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack)
91 #define INIT_THREAD { \
92 .sp = INIT_SP, \
93 }
95 /*
96 * Do necessary setup to start up a newly executed thread.
97 */
99 /* User process Backup PSW */
100 #define USERPS_BPSW (M32R_PSW_BSM|M32R_PSW_BIE|M32R_PSW_BPM)
102 #define start_thread(regs, new_pc, new_spu) \
103 do { \
104 set_fs(USER_DS); \
105 regs->psw = (regs->psw | USERPS_BPSW) & 0x0000FFFFUL; \
106 regs->bpc = new_pc; \
107 regs->spu = new_spu; \
108 } while (0)
110 /* Forward declaration, a strange C thing */
111 struct task_struct;
112 struct mm_struct;
114 /* Free all resources held by a thread. */
115 extern void release_thread(struct task_struct *);
117 #define prepare_to_copy(tsk) do { } while (0)
119 /*
120 * create a kernel thread without removing it from tasklists
121 */
122 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
124 /* Copy and release all segment info associated with a VM */
125 extern void copy_segments(struct task_struct *p, struct mm_struct * mm);
126 extern void release_segments(struct mm_struct * mm);
128 extern unsigned long thread_saved_pc(struct task_struct *);
130 /* Copy and release all segment info associated with a VM */
131 #define copy_segments(p, mm) do { } while (0)
132 #define release_segments(mm) do { } while (0)
134 unsigned long get_wchan(struct task_struct *p);
135 #define KSTK_EIP(tsk) ((tsk)->thread.lr)
136 #define KSTK_ESP(tsk) ((tsk)->thread.sp)
138 #define THREAD_SIZE (2*PAGE_SIZE)
140 #define cpu_relax() barrier()
142 #endif /* _ASM_M32R_PROCESSOR_H */