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 7abdaa9..3673a13 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 37b82cb..e727fe0 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 00f45ff..d7d50d7 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 35752da..c840719 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 7fa660f..89853bc 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							\