[PATCH] x86_64 update

x86-64 updates for 2.5.58. Changes only x86-64 specific files.

 - Rewrote module allocation. Lots of bugs fixed. Module loading
   should work now again.
 - Kconfig help fixes from Randy Dunlap
 - Makefile cleanups from Pavel Machek and Sam Ravnborg
 - Assembly cleanups from Pavel
 - defconfig update
 - Better strlen_user/strnlen_user
 - Merge with i386: new ptrace commands, 32bit vsyscall signal trampolines
		new deactivate_mm, add asm/bug.h
 - Make sure initramfs is freed after booting (thanks to Kai for the hint)
 - User per cpu data for profile counters (Ravikiran Thirumalai)
 - 32bit compat_* updates from Stephen Rothwell
 - Fix race in context switch. The exception handler for bogus segment
   loads in __switch_to needs to keep interrupts disabled, otherwise an
   interrupt can deadlock on scheduler locks.  Also make sure they don't
   printk or set oops_in_progress during printk because printk does a
   wake_up too.
 - Disable 64bit GS base changes for processes.  I cannot get it to work
   reliably.
 - Clear IOPL on kernel entry

9 files changed, 54 insertions, 31 deletions

diff --git a/include/asm-x86_64/bug.h b/include/asm-x86_64/bug.h
new file mode 100644
index 000000000000..cd37970bd4ee
--- /dev/null
+++ b/include/asm-x86_64/bug.h
@@ -0,0 +1,24 @@
+#ifndef __ASM_X8664_BUG_H
+#define __ASM_X8664_BUG_H 1
+
+#include <linux/stringify.h>
+
+/*
+ * Tell the user there is some problem.  The exception handler decodes 
+ * this frame.
+ */ 
+struct bug_frame { 
+       unsigned char ud2[2];          
+	/* should use 32bit offset instead, but the assembler doesn't 
+	   like it */ 
+	char *filename;   
+	unsigned short line; 
+} __attribute__((packed)); 
+
+#define BUG() \
+	asm volatile("ud2 ; .quad %c1 ; .short %c0" :: \
+		     "i"(__LINE__), "i" (__stringify(KBUILD_BASENAME)))
+#define PAGE_BUG(page) BUG()
+void out_of_line_bug(void);
+
+#endif
diff --git a/include/asm-x86_64/compat.h b/include/asm-x86_64/compat.h
index 140308fb61e7..5307fdeb598c 100644
--- a/include/asm-x86_64/compat.h
+++ b/include/asm-x86_64/compat.h
@@ -68,4 +68,17 @@ struct compat_flock {
 	compat_pid_t	l_pid;
 };
 
+struct compat_statfs {
+	int		f_type;
+	int		f_bsize;
+	int		f_blocks;
+	int		f_bfree;
+	int		f_bavail;
+	int		f_files;
+	int		f_ffree;
+	compat_fsid_t	f_fsid;
+	int		f_namelen;	/* SunOS ignores this field. */
+	int		f_spare[6];
+};
+
 #endif /* _ASM_X86_64_COMPAT_H */
diff --git a/include/asm-x86_64/ia32.h b/include/asm-x86_64/ia32.h
index 7ebb9db48314..c39a426062ee 100644
--- a/include/asm-x86_64/ia32.h
+++ b/include/asm-x86_64/ia32.h
@@ -101,19 +101,6 @@ struct stat64 {
 } __attribute__((packed));
 
 
-struct statfs32 {
-       int f_type;
-       int f_bsize;
-       int f_blocks;
-       int f_bfree;
-       int f_bavail;
-       int f_files;
-       int f_ffree;
-       compat_fsid_t f_fsid;
-       int f_namelen;  /* SunOS ignores this field. */
-       int f_spare[6];
-};
-
 typedef union sigval32 {
 	int sival_int;
 	unsigned int sival_ptr;
diff --git a/include/asm-x86_64/mmu_context.h b/include/asm-x86_64/mmu_context.h
index 296390b6b5ad..41fc9820ee94 100644
--- a/include/asm-x86_64/mmu_context.h
+++ b/include/asm-x86_64/mmu_context.h
@@ -62,7 +62,10 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 #endif
 }
 
-#define deactivate_mm(tsk,mm)	do { } while (0)
+#define deactivate_mm(tsk,mm)	do { \
+	load_gs_index(0); \
+	asm volatile("movl %0,%%fs"::"r"(0));  \
+} while(0)
 
 #define activate_mm(prev, next) \
 	switch_mm((prev),(next),NULL,smp_processor_id())
diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h
index 41a2b59d9d7d..2e65d509ec25 100644
--- a/include/asm-x86_64/page.h
+++ b/include/asm-x86_64/page.h
@@ -69,21 +69,7 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 
 #ifndef __ASSEMBLY__
 
-#include <linux/stringify.h>
-
-/*
- * Tell the user there is some problem.  The exception handler decodes this frame.
- */ 
-struct bug_frame { 
-       unsigned char ud2[2];          
-	char *filename;    /* should use 32bit offset instead, but the assembler doesn't like it */ 
-	unsigned short line; 
-} __attribute__((packed)); 
-#define BUG() \
-	asm volatile("ud2 ; .quad %c1 ; .short %c0" :: \
-		     "i"(__LINE__), "i" (__stringify(KBUILD_BASENAME)))
-#define PAGE_BUG(page) BUG()
-void out_of_line_bug(void);
+#include <asm/bug.h>
 
 /* Pure 2^n version of get_order */
 extern __inline__ int get_order(unsigned long size)
diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h
index 9ca683849c42..f58ac42093e1 100644
--- a/include/asm-x86_64/proto.h
+++ b/include/asm-x86_64/proto.h
@@ -43,6 +43,12 @@ extern void exception_table_check(void);
 extern int acpi_boot_init(char *);
 
 extern int map_syscall32(struct mm_struct *mm, unsigned long address);
+extern char *syscall32_page;
+
+struct thread_struct;
+
+int do_set_thread_area(struct thread_struct *t, struct user_desc *u_info);
+int do_get_thread_area(struct thread_struct *t, struct user_desc *u_info);
 
 #define round_up(x,y) (((x) + (y) - 1) & ~((y)-1))
 #define round_down(x,y) ((x) & ~((y)-1))
diff --git a/include/asm-x86_64/ptrace.h b/include/asm-x86_64/ptrace.h
index da406de40ca1..496595c011ed 100644
--- a/include/asm-x86_64/ptrace.h
+++ b/include/asm-x86_64/ptrace.h
@@ -78,6 +78,10 @@ struct pt_regs {
 #define PTRACE_GETFPXREGS         18
 #define PTRACE_SETFPXREGS         19
 
+#define PTRACE_GET_THREAD_AREA    25
+#define PTRACE_SET_THREAD_AREA    26
+
+
 #if defined(__KERNEL__) && !defined(__ASSEMBLY__) 
 #define user_mode(regs) (!!((regs)->cs & 3))
 #define instruction_pointer(regs) ((regs)->rip)
diff --git a/include/asm-x86_64/segment.h b/include/asm-x86_64/segment.h
index 64f131070585..6992086cbe7c 100644
--- a/include/asm-x86_64/segment.h
+++ b/include/asm-x86_64/segment.h
@@ -10,7 +10,7 @@
 
 /* 
  * we cannot use the same code segment descriptor for user and kernel
- * even not in the long flat model, because of different DPL /kkeil 
+ * -- not even in the long flat mode, because of different DPL /kkeil 
  * The segment offset needs to contain a RPL. Grr. -AK
  * GDT layout to get 64bit syscall right (sysret hardcodes gdt offsets) 
  */
diff --git a/include/asm-x86_64/uaccess.h b/include/asm-x86_64/uaccess.h
index c18c2d6a77b2..14fa21f8b302 100644
--- a/include/asm-x86_64/uaccess.h
+++ b/include/asm-x86_64/uaccess.h
@@ -299,8 +299,8 @@ static inline int __copy_to_user(void *dst, const void *src, unsigned size)
 
 long strncpy_from_user(char *dst, const char *src, long count);
 long __strncpy_from_user(char *dst, const char *src, long count);
-#define strlen_user(str) strnlen_user(str, ~0UL >> 1)
 long strnlen_user(const char *str, long n);
+long strlen_user(const char *str);
 unsigned long clear_user(void *mem, unsigned long len);
 unsigned long __clear_user(void *mem, unsigned long len);