ia64/linux-2.6.18-xen.hg

view include/asm-v850/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 * include/asm-v850/processor.h
3 *
4 * Copyright (C) 2001,02,03 NEC Electronics Corporation
5 * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
14 #ifndef __V850_PROCESSOR_H__
15 #define __V850_PROCESSOR_H__
17 #ifndef __ASSEMBLY__ /* <linux/thread_info.h> is not asm-safe. */
18 #include <linux/thread_info.h>
19 #endif
21 #include <linux/compiler.h>
22 #include <asm/ptrace.h>
23 #include <asm/entry.h>
25 /* Some code expects `segment' stuff to be defined here. */
26 #include <asm/segment.h>
29 /*
30 * The only places this is used seem to be horrible bletcherous kludges,
31 * so we just define it to be as large as possible.
32 */
33 #define TASK_SIZE (0xFFFFFFFF)
35 /*
36 * This decides where the kernel will search for a free chunk of vm
37 * space during mmap's. We won't be using it.
38 */
39 #define TASK_UNMAPPED_BASE 0
42 #ifndef __ASSEMBLY__
45 /*
46 * Default implementation of macro that returns current
47 * instruction pointer ("program counter").
48 */
49 #define current_text_addr() ({ __label__ _l; _l: &&_l;})
51 /* If you change this, you must change the associated assembly-languages
52 constants defined below, THREAD_*. */
53 struct thread_struct {
54 /* kernel stack pointer (must be first field in structure) */
55 unsigned long ksp;
56 };
58 #define INIT_THREAD { sizeof init_stack + (unsigned long)init_stack }
61 /* Do necessary setup to start up a newly executed thread. */
62 static inline void start_thread (struct pt_regs *regs,
63 unsigned long pc, unsigned long usp)
64 {
65 regs->pc = pc;
66 regs->gpr[GPR_SP] = usp;
67 regs->kernel_mode = 0;
68 }
70 /* Free all resources held by a thread. */
71 static inline void release_thread (struct task_struct *dead_task)
72 {
73 }
75 /* Prepare to copy thread state - unlazy all lazy status */
76 #define prepare_to_copy(tsk) do { } while (0)
78 extern int kernel_thread (int (*fn)(void *), void * arg, unsigned long flags);
80 /* Free current thread data structures etc. */
81 static inline void exit_thread (void)
82 {
83 }
86 /* Return the registers saved during context-switch by the currently
87 not-running thread T. Note that this only includes some registers!
88 See entry.S for details. */
89 #define thread_saved_regs(t) \
90 ((struct pt_regs*)((t)->thread.ksp + STATE_SAVE_PT_OFFSET))
91 /* Return saved (kernel) PC of a blocked thread. Actually, we return the
92 LP register, because the thread is actually blocked in switch_thread,
93 and we're interested in the PC it will _return_ to. */
94 #define thread_saved_pc(t) (thread_saved_regs(t)->gpr[GPR_LP])
97 unsigned long get_wchan (struct task_struct *p);
100 /* Return some info about the user process TASK. */
101 #define task_tos(task) ((unsigned long)task_stack_page(task) + THREAD_SIZE)
102 #define task_pt_regs(task) ((struct pt_regs *)task_tos (task) - 1)
103 #define task_sp(task) (task_pt_regs (task)->gpr[GPR_SP])
104 #define task_pc(task) (task_pt_regs (task)->pc)
105 /* Grotty old names for some. */
106 #define KSTK_EIP(task) task_pc (task)
107 #define KSTK_ESP(task) task_sp (task)
110 #define cpu_relax() barrier()
113 #else /* __ASSEMBLY__ */
115 #define THREAD_KSP 0
117 #endif /* !__ASSEMBLY__ */
120 #endif /* __V850_PROCESSOR_H__ */