Merge branch 'x86/urgent' into x86/xen

Conflicts:
	arch/frv/include/asm/pgtable.h
	arch/x86/include/asm/required-features.h
	arch/x86/xen/mmu.c

Merge reason: x86/xen was on a .29 base still, move it to a fresher
              branch and pick up Xen fixes as well, plus resolve
              conflicts

Signed-off-by: Ingo Molnar <mingo@elte.hu>

5 files changed, 25 insertions, 61 deletions

diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
index 7abdaa91ccd3..3673a13b6703 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic.h
@@ -132,9 +132,9 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
 #define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l))
 
 #define atomic_long_cmpxchg(l, old, new) \
-        (atomic_cmpxchg((atomic64_t *)(l), (old), (new)))
+        (atomic64_cmpxchg((atomic64_t *)(l), (old), (new)))
 #define atomic_long_xchg(v, new) \
-        (atomic_xchg((atomic64_t *)(l), (new)))
+        (atomic64_xchg((atomic64_t *)(l), (new)))
 
 #else  /*  BITS_PER_LONG == 64  */
 
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 37b82cb96c89..e727fe0d1451 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -88,7 +88,7 @@ extern void warn_slowpath(const char *file, const int line,
 
 #else /* !CONFIG_BUG */
 #ifndef HAVE_ARCH_BUG
-#define BUG()
+#define BUG() do {} while(0)
 #endif
 
 #ifndef HAVE_ARCH_BUG_ON
diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
index 00f45ff081a6..d7d50d7ee51e 100644
--- a/include/asm-generic/percpu.h
+++ b/include/asm-generic/percpu.h
@@ -1,13 +1,9 @@
 #ifndef _ASM_GENERIC_PERCPU_H_
 #define _ASM_GENERIC_PERCPU_H_
+
 #include <linux/compiler.h>
 #include <linux/threads.h>
-
-/*
- * Determine the real variable name from the name visible in the
- * kernel sources.
- */
-#define per_cpu_var(var) per_cpu__##var
+#include <linux/percpu-defs.h>
 
 #ifdef CONFIG_SMP
 
@@ -73,63 +69,32 @@ extern void setup_per_cpu_areas(void);
 
 #endif  /* SMP */
 
-#ifndef PER_CPU_ATTRIBUTES
-#define PER_CPU_ATTRIBUTES
+#ifndef PER_CPU_BASE_SECTION
+#ifdef CONFIG_SMP
+#define PER_CPU_BASE_SECTION ".data.percpu"
+#else
+#define PER_CPU_BASE_SECTION ".data"
 #endif
-
-#define DECLARE_PER_CPU(type, name) extern PER_CPU_ATTRIBUTES \
-                                        __typeof__(type) per_cpu_var(name)
-
-/*
- * Optional methods for optimized non-lvalue per-cpu variable access.
- *
- * @var can be a percpu variable or a field of it and its size should
- * equal char, int or long.  percpu_read() evaluates to a lvalue and
- * all others to void.
- *
- * These operations are guaranteed to be atomic w.r.t. preemption.
- * The generic versions use plain get/put_cpu_var().  Archs are
- * encouraged to implement single-instruction alternatives which don't
- * require preemption protection.
- */
-#ifndef percpu_read
-# define percpu_read(var)                                               \
-  ({                                                                    \
-        typeof(per_cpu_var(var)) __tmp_var__;                           \
-        __tmp_var__ = get_cpu_var(var);                                 \
-        put_cpu_var(var);                                               \
-        __tmp_var__;                                                    \
-  })
 #endif
 
-#define __percpu_generic_to_op(var, val, op)                            \
-do {                                                                    \
-        get_cpu_var(var) op val;                                        \
-        put_cpu_var(var);                                               \
-} while (0)
-
-#ifndef percpu_write
-# define percpu_write(var, val)         __percpu_generic_to_op(var, (val), =)
-#endif
+#ifdef CONFIG_SMP
 
-#ifndef percpu_add
-# define percpu_add(var, val)           __percpu_generic_to_op(var, (val), +=)
+#ifdef MODULE
+#define PER_CPU_SHARED_ALIGNED_SECTION ""
+#else
+#define PER_CPU_SHARED_ALIGNED_SECTION ".shared_aligned"
 #endif
+#define PER_CPU_FIRST_SECTION ".first"
 
-#ifndef percpu_sub
-# define percpu_sub(var, val)           __percpu_generic_to_op(var, (val), -=)
-#endif
+#else
 
-#ifndef percpu_and
-# define percpu_and(var, val)           __percpu_generic_to_op(var, (val), &=)
-#endif
+#define PER_CPU_SHARED_ALIGNED_SECTION ""
+#define PER_CPU_FIRST_SECTION ""
 
-#ifndef percpu_or
-# define percpu_or(var, val)            __percpu_generic_to_op(var, (val), |=)
 #endif
 
-#ifndef percpu_xor
-# define percpu_xor(var, val)           __percpu_generic_to_op(var, (val), ^=)
+#ifndef PER_CPU_ATTRIBUTES
+#define PER_CPU_ATTRIBUTES
 #endif
 
 #endif /* _ASM_GENERIC_PERCPU_H_ */
diff --git a/include/asm-generic/siginfo.h b/include/asm-generic/siginfo.h
index 35752dadd6df..c840719a8c59 100644
--- a/include/asm-generic/siginfo.h
+++ b/include/asm-generic/siginfo.h
@@ -201,7 +201,7 @@ typedef struct siginfo {
 #define TRAP_TRACE      (__SI_FAULT|2)  /* process trace trap */
 #define TRAP_BRANCH     (__SI_FAULT|3)  /* process taken branch trap */
 #define TRAP_HWBKPT     (__SI_FAULT|4)  /* hardware breakpoint/watchpoint */
-#define NSIGTRAP        2
+#define NSIGTRAP        4
 
 /*
  * SIGCHLD si_codes
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 7fa660fd449c..89853bcd27a6 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -1,3 +1,5 @@
+#include <linux/section-names.h>
+
 #ifndef LOAD_OFFSET
 #define LOAD_OFFSET 0
 #endif
@@ -88,7 +90,6 @@
 /* .data section */
 #define DATA_DATA                                                       \
         *(.data)                                                        \
-        *(.data.init.refok)                                             \
         *(.ref.data)                                                    \
         DEV_KEEP(init.data)                                             \
         DEV_KEEP(exit.data)                                             \
@@ -287,8 +288,6 @@
                 *(.text.hot)                                            \
                 *(.text)                                                \
                 *(.ref.text)                                            \
-                *(.text.init.refok)                                     \
-                *(.exit.text.refok)                                     \
         DEV_KEEP(init.text)                                             \
         DEV_KEEP(exit.text)                                             \
         CPU_KEEP(init.text)                                             \
@@ -331,7 +330,7 @@
 #endif
 
 /* Section used for early init (in .S files) */
-#define HEAD_TEXT  *(.head.text)
+#define HEAD_TEXT  *(HEAD_TEXT_SECTION)
 
 /* init and exit section handling */
 #define INIT_DATA                                                       \