ia64/xen-unstable

view linux-2.6-xen-sparse/arch/x86_64/kernel/init_task.c @ 13647:057c4c2991fa

32-on-64: Fix an one-off error in compat_addr_ok().
Signed-off-by: Jan Beulich <jbeulich@novell.com>
author kaf24@localhost.localdomain
date Fri Jan 26 13:36:52 2007 +0000 (2007-01-26)
parents 3adf00179a63
children f71157f1f1a0
line source
1 #include <linux/mm.h>
2 #include <linux/module.h>
3 #include <linux/sched.h>
4 #include <linux/init.h>
5 #include <linux/init_task.h>
6 #include <linux/fs.h>
7 #include <linux/mqueue.h>
9 #include <asm/uaccess.h>
10 #include <asm/pgtable.h>
11 #include <asm/desc.h>
13 static struct fs_struct init_fs = INIT_FS;
14 static struct files_struct init_files = INIT_FILES;
15 static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
16 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
17 struct mm_struct init_mm = INIT_MM(init_mm);
19 EXPORT_SYMBOL(init_mm);
21 /*
22 * Initial task structure.
23 *
24 * We need to make sure that this is 8192-byte aligned due to the
25 * way process stacks are handled. This is done by having a special
26 * "init_task" linker map entry..
27 */
28 union thread_union init_thread_union
29 __attribute__((__section__(".data.init_task"))) =
30 { INIT_THREAD_INFO(init_task) };
32 /*
33 * Initial task structure.
34 *
35 * All other task structs will be allocated on slabs in fork.c
36 */
37 struct task_struct init_task = INIT_TASK(init_task);
39 EXPORT_SYMBOL(init_task);
41 #ifndef CONFIG_X86_NO_TSS
42 /*
43 * per-CPU TSS segments. Threads are completely 'soft' on Linux,
44 * no more per-task TSS's. The TSS size is kept cacheline-aligned
45 * so they are allowed to end up in the .data.cacheline_aligned
46 * section. Since TSS's are completely CPU-local, we want them
47 * on exact cacheline boundaries, to eliminate cacheline ping-pong.
48 */
49 DEFINE_PER_CPU(struct tss_struct, init_tss) ____cacheline_internodealigned_in_smp = INIT_TSS;
50 #endif
52 /* Copies of the original ist values from the tss are only accessed during
53 * debugging, no special alignment required.
54 */
55 DEFINE_PER_CPU(struct orig_ist, orig_ist);
57 #define ALIGN_TO_4K __attribute__((section(".data.init_task")))