ia64/linux-2.6.18-xen.hg

view include/asm-arm/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 /*
2 * linux/include/asm-arm/processor.h
3 *
4 * Copyright (C) 1995-1999 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
11 #ifndef __ASM_ARM_PROCESSOR_H
12 #define __ASM_ARM_PROCESSOR_H
14 /*
15 * Default implementation of macro that returns current
16 * instruction pointer ("program counter").
17 */
18 #define current_text_addr() ({ __label__ _l; _l: &&_l;})
20 #ifdef __KERNEL__
22 #include <asm/ptrace.h>
23 #include <asm/procinfo.h>
24 #include <asm/types.h>
26 union debug_insn {
27 u32 arm;
28 u16 thumb;
29 };
31 struct debug_entry {
32 u32 address;
33 union debug_insn insn;
34 };
36 struct debug_info {
37 int nsaved;
38 struct debug_entry bp[2];
39 };
41 struct thread_struct {
42 /* fault info */
43 unsigned long address;
44 unsigned long trap_no;
45 unsigned long error_code;
46 /* debugging */
47 struct debug_info debug;
48 };
50 #define INIT_THREAD { }
52 #ifdef CONFIG_MMU
53 #define nommu_start_thread(regs) do { } while (0)
54 #else
55 #define nommu_start_thread(regs) regs->ARM_r10 = current->mm->start_data
56 #endif
58 #define start_thread(regs,pc,sp) \
59 ({ \
60 unsigned long *stack = (unsigned long *)sp; \
61 set_fs(USER_DS); \
62 memzero(regs->uregs, sizeof(regs->uregs)); \
63 if (current->personality & ADDR_LIMIT_32BIT) \
64 regs->ARM_cpsr = USR_MODE; \
65 else \
66 regs->ARM_cpsr = USR26_MODE; \
67 if (elf_hwcap & HWCAP_THUMB && pc & 1) \
68 regs->ARM_cpsr |= PSR_T_BIT; \
69 regs->ARM_pc = pc & ~1; /* pc */ \
70 regs->ARM_sp = sp; /* sp */ \
71 regs->ARM_r2 = stack[2]; /* r2 (envp) */ \
72 regs->ARM_r1 = stack[1]; /* r1 (argv) */ \
73 regs->ARM_r0 = stack[0]; /* r0 (argc) */ \
74 nommu_start_thread(regs); \
75 })
77 /* Forward declaration, a strange C thing */
78 struct task_struct;
80 /* Free all resources held by a thread. */
81 extern void release_thread(struct task_struct *);
83 /* Prepare to copy thread state - unlazy all lazy status */
84 #define prepare_to_copy(tsk) do { } while (0)
86 unsigned long get_wchan(struct task_struct *p);
88 #define cpu_relax() barrier()
90 /*
91 * Create a new kernel thread
92 */
93 extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
95 #define task_pt_regs(p) \
96 ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
98 #define KSTK_EIP(tsk) task_pt_regs(tsk)->ARM_pc
99 #define KSTK_ESP(tsk) task_pt_regs(tsk)->ARM_sp
101 /*
102 * Prefetching support - only ARMv5.
103 */
104 #if __LINUX_ARM_ARCH__ >= 5
106 #define ARCH_HAS_PREFETCH
107 #define prefetch(ptr) \
108 ({ \
109 __asm__ __volatile__( \
110 "pld\t%0" \
111 : \
112 : "o" (*(char *)(ptr)) \
113 : "cc"); \
114 })
116 #define ARCH_HAS_PREFETCHW
117 #define prefetchw(ptr) prefetch(ptr)
119 #define ARCH_HAS_SPINLOCK_PREFETCH
120 #define spin_lock_prefetch(x) do { } while (0)
122 #endif
124 #endif
126 #endif /* __ASM_ARM_PROCESSOR_H */