Merge commit 'origin/master' into for-linus/xen/master

* commit 'origin/master': (4825 commits)
  Fix build errors due to CONFIG_BRANCH_TRACER=y
  parport: Use the PCI IRQ if offered
  tty: jsm cleanups
  Adjust path to gpio headers
  KGDB_SERIAL_CONSOLE check for module
  Change KCONFIG name
  tty: Blackin CTS/RTS
  Change hardware flow control from poll to interrupt driven
  Add support for the MAX3100 SPI UART.
  lanana: assign a device name and numbering for MAX3100
  serqt: initial clean up pass for tty side
  tty: Use the generic RS485 ioctl on CRIS
  tty: Correct inline types for tty_driver_kref_get()
  splice: fix deadlock in splicing to file
  nilfs2: support nanosecond timestamp
  nilfs2: introduce secondary super block
  nilfs2: simplify handling of active state of segments
  nilfs2: mark minor flag for checkpoint created by internal operation
  nilfs2: clean up sketch file
  nilfs2: super block operations fix endian bug
  ...

Conflicts:
	arch/x86/include/asm/thread_info.h
	arch/x86/lguest/boot.c
	drivers/xen/manage.c

7 files changed, 159 insertions, 72 deletions

diff --git a/arch/sh/include/asm/mmu.h b/arch/sh/include/asm/mmu.h
index 6c43625bb1a5..f5963037c9d6 100644
--- a/arch/sh/include/asm/mmu.h
+++ b/arch/sh/include/asm/mmu.h
@@ -1,22 +1,6 @@
 #ifndef __MMU_H
 #define __MMU_H
 
-/* Default "unsigned long" context */
-typedef unsigned long mm_context_id_t[NR_CPUS];
-
-typedef struct {
-#ifdef CONFIG_MMU
-	mm_context_id_t		id;
-	void			*vdso;
-#else
-	unsigned long		end_brk;
-#endif
-#ifdef CONFIG_BINFMT_ELF_FDPIC
-	unsigned long		exec_fdpic_loadmap;
-	unsigned long		interp_fdpic_loadmap;
-#endif
-} mm_context_t;
-
 /*
  * Privileged Space Mapping Buffer (PMB) definitions
  */
@@ -41,6 +25,24 @@ typedef struct {
 
 #define PMB_NO_ENTRY		(-1)
 
+#ifndef __ASSEMBLY__
+
+/* Default "unsigned long" context */
+typedef unsigned long mm_context_id_t[NR_CPUS];
+
+typedef struct {
+#ifdef CONFIG_MMU
+	mm_context_id_t		id;
+	void			*vdso;
+#else
+	unsigned long		end_brk;
+#endif
+#ifdef CONFIG_BINFMT_ELF_FDPIC
+	unsigned long		exec_fdpic_loadmap;
+	unsigned long		interp_fdpic_loadmap;
+#endif
+} mm_context_t;
+
 struct pmb_entry;
 
 struct pmb_entry {
@@ -70,6 +72,7 @@ void pmb_free(struct pmb_entry *pmbe);
 long pmb_remap(unsigned long virt, unsigned long phys,
 	       unsigned long size, unsigned long flags);
 void pmb_unmap(unsigned long addr);
+#endif /* __ASSEMBLY__ */
 
 #endif /* __MMU_H */
 
diff --git a/arch/sh/include/asm/processor_32.h b/arch/sh/include/asm/processor_32.h
index efdd78a53b11..9a8714945dc9 100644
--- a/arch/sh/include/asm/processor_32.h
+++ b/arch/sh/include/asm/processor_32.h
@@ -58,6 +58,14 @@ asmlinkage void __init sh_cpu_init(void);
 #define SR_FD		0x00008000
 
 /*
+ * DSP structure and data
+ */
+struct sh_dsp_struct {
+	unsigned long dsp_regs[14];
+	long status;
+};
+
+/*
  * FPU structure and data
  */
 
@@ -96,6 +104,11 @@ struct thread_struct {
 
 	/* floating point info */
 	union sh_fpu_union fpu;
+
+#ifdef CONFIG_SH_DSP
+	/* Dsp status information */
+	struct sh_dsp_struct dsp_status;
+#endif
 };
 
 /* Count of active tasks with UBC settings */
diff --git a/arch/sh/include/asm/ptrace.h b/arch/sh/include/asm/ptrace.h
index 81c6568fdb3e..d3f6caa936b0 100644
--- a/arch/sh/include/asm/ptrace.h
+++ b/arch/sh/include/asm/ptrace.h
@@ -119,16 +119,8 @@ struct task_struct;
 extern void user_enable_single_step(struct task_struct *);
 extern void user_disable_single_step(struct task_struct *);
 
-#ifdef CONFIG_SH_DSP
-#define task_pt_regs(task) \
-	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
-		 - sizeof(struct pt_dspregs)) - 1)
-#define task_pt_dspregs(task) \
-	((struct pt_dspregs *) (task_stack_page(task) + THREAD_SIZE) - 1)
-#else
 #define task_pt_regs(task) \
 	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE) - 1)
-#endif
 
 static inline unsigned long profile_pc(struct pt_regs *regs)
 {
diff --git a/arch/sh/include/asm/spinlock.h b/arch/sh/include/asm/spinlock.h
index e793181d64da..60283565f89b 100644
--- a/arch/sh/include/asm/spinlock.h
+++ b/arch/sh/include/asm/spinlock.h
@@ -216,6 +216,9 @@ static inline int __raw_write_trylock(raw_rwlock_t *rw)
 	return (oldval > (RW_LOCK_BIAS - 1));
 }
 
+#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock)
+#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock)
+
 #define _raw_spin_relax(lock)	cpu_relax()
 #define _raw_read_relax(lock)	cpu_relax()
 #define _raw_write_relax(lock)	cpu_relax()
diff --git a/arch/sh/include/asm/system.h b/arch/sh/include/asm/system.h
index c9ec6af8e745..a88895e6dcb0 100644
--- a/arch/sh/include/asm/system.h
+++ b/arch/sh/include/asm/system.h
@@ -153,6 +153,7 @@ extern unsigned long cached_to_uncached;
 extern struct dentry *sh_debugfs_root;
 
 void per_cpu_trap_init(void);
+void default_idle(void);
 
 asmlinkage void break_point_trap(void);
 
diff --git a/arch/sh/include/asm/system_32.h b/arch/sh/include/asm/system_32.h
index a726d5d07277..240b31e1142c 100644
--- a/arch/sh/include/asm/system_32.h
+++ b/arch/sh/include/asm/system_32.h
@@ -3,59 +3,135 @@
 
 #include <linux/types.h>
 
+#ifdef CONFIG_SH_DSP
+
+#define is_dsp_enabled(tsk)						\
+	(!!(tsk->thread.dsp_status.status & SR_DSP))
+
+#define __restore_dsp(tsk)						\
+do {									\
+	register u32 *__ts2 __asm__ ("r2") =				\
+			(u32 *)&tsk->thread.dsp_status;			\
+	__asm__ __volatile__ (						\
+		".balign 4\n\t"						\
+		"movs.l	@r2+, a1\n\t"					\
+		"movs.l	@r2+, a0g\n\t"					\
+		"movs.l	@r2+, a1g\n\t"					\
+		"movs.l	@r2+, m0\n\t"					\
+		"movs.l	@r2+, m1\n\t"					\
+		"movs.l	@r2+, a0\n\t"					\
+		"movs.l	@r2+, x0\n\t"					\
+		"movs.l	@r2+, x1\n\t"					\
+		"movs.l	@r2+, y0\n\t"					\
+		"movs.l	@r2+, y1\n\t"					\
+		"lds.l	@r2+, dsr\n\t"					\
+		"ldc.l	@r2+, rs\n\t"					\
+		"ldc.l	@r2+, re\n\t"					\
+		"ldc.l	@r2+, mod\n\t"					\
+		: : "r" (__ts2));					\
+} while (0)
+
+
+#define __save_dsp(tsk)							\
+do {									\
+	register u32 *__ts2 __asm__ ("r2") =				\
+			(u32 *)&tsk->thread.dsp_status + 14;		\
+									\
+	__asm__ __volatile__ (						\
+		".balign 4\n\t"						\
+		"stc.l	mod, @-r2\n\t"				\
+		"stc.l	re, @-r2\n\t"					\
+		"stc.l	rs, @-r2\n\t"					\
+		"sts.l	dsr, @-r2\n\t"				\
+		"sts.l	y1, @-r2\n\t"					\
+		"sts.l	y0, @-r2\n\t"					\
+		"sts.l	x1, @-r2\n\t"					\
+		"sts.l	x0, @-r2\n\t"					\
+		"sts.l	a0, @-r2\n\t"					\
+		".word	0xf653		! movs.l	a1, @-r2\n\t"	\
+		".word	0xf6f3		! movs.l	a0g, @-r2\n\t"	\
+		".word	0xf6d3		! movs.l	a1g, @-r2\n\t"	\
+		".word	0xf6c3		! movs.l        m0, @-r2\n\t"	\
+		".word	0xf6e3		! movs.l        m1, @-r2\n\t"	\
+		: : "r" (__ts2));					\
+} while (0)
+
+#else
+
+#define is_dsp_enabled(tsk)	(0)
+#define __save_dsp(tsk)		do { } while (0)
+#define __restore_dsp(tsk)	do { } while (0)
+#endif
+
 struct task_struct *__switch_to(struct task_struct *prev,
 				struct task_struct *next);
 
 /*
  *	switch_to() should switch tasks to task nr n, first
  */
-#define switch_to(prev, next, last)					\
-do {									\
-	register u32 *__ts1 __asm__ ("r1") = (u32 *)&prev->thread.sp;	\
-	register u32 *__ts2 __asm__ ("r2") = (u32 *)&prev->thread.pc;	\
-	register u32 *__ts4 __asm__ ("r4") = (u32 *)prev;		\
-	register u32 *__ts5 __asm__ ("r5") = (u32 *)next;		\
-	register u32 *__ts6 __asm__ ("r6") = (u32 *)&next->thread.sp;	\
-	register u32 __ts7 __asm__ ("r7") = next->thread.pc;		\
-	struct task_struct *__last;					\
-									\
-	__asm__ __volatile__ (						\
-		".balign 4\n\t"						\
-		"stc.l	gbr, @-r15\n\t"					\
-		"sts.l	pr, @-r15\n\t"					\
-		"mov.l	r8, @-r15\n\t"					\
-		"mov.l	r9, @-r15\n\t"					\
-		"mov.l	r10, @-r15\n\t"					\
-		"mov.l	r11, @-r15\n\t"					\
-		"mov.l	r12, @-r15\n\t"					\
-		"mov.l	r13, @-r15\n\t"					\
-		"mov.l	r14, @-r15\n\t"					\
-		"mov.l	r15, @r1\t! save SP\n\t"			\
-		"mov.l	@r6, r15\t! change to new stack\n\t"		\
-		"mova	1f, %0\n\t"					\
-		"mov.l	%0, @r2\t! save PC\n\t"				\
-		"mov.l	2f, %0\n\t"					\
-		"jmp	@%0\t! call __switch_to\n\t"			\
-		" lds	r7, pr\t!  with return to new PC\n\t"		\
-		".balign	4\n"					\
-		"2:\n\t"						\
-		".long	__switch_to\n"					\
-		"1:\n\t"						\
-		"mov.l	@r15+, r14\n\t"					\
-		"mov.l	@r15+, r13\n\t"					\
-		"mov.l	@r15+, r12\n\t"					\
-		"mov.l	@r15+, r11\n\t"					\
-		"mov.l	@r15+, r10\n\t"					\
-		"mov.l	@r15+, r9\n\t"					\
-		"mov.l	@r15+, r8\n\t"					\
-		"lds.l	@r15+, pr\n\t"					\
-		"ldc.l	@r15+, gbr\n\t"					\
-		: "=z" (__last)						\
-		: "r" (__ts1), "r" (__ts2), "r" (__ts4),		\
-		  "r" (__ts5), "r" (__ts6), "r" (__ts7)			\
-		: "r3", "t");						\
-									\
-	last = __last;							\
+#define switch_to(prev, next, last)				\
+do {								\
+	register u32 *__ts1 __asm__ ("r1");			\
+	register u32 *__ts2 __asm__ ("r2");			\
+	register u32 *__ts4 __asm__ ("r4");			\
+	register u32 *__ts5 __asm__ ("r5");			\
+	register u32 *__ts6 __asm__ ("r6");			\
+	register u32 __ts7 __asm__ ("r7");			\
+	struct task_struct *__last;				\
+								\
+	if (is_dsp_enabled(prev))				\
+		__save_dsp(prev);				\
+								\
+	__ts1 = (u32 *)&prev->thread.sp;			\
+	__ts2 = (u32 *)&prev->thread.pc;			\
+	__ts4 = (u32 *)prev;					\
+	__ts5 = (u32 *)next;					\
+	__ts6 = (u32 *)&next->thread.sp;			\
+	__ts7 = next->thread.pc;				\
+								\
+	__asm__ __volatile__ (					\
+		".balign 4\n\t"					\
+		"stc.l	gbr, @-r15\n\t"				\
+		"sts.l	pr, @-r15\n\t"				\
+		"mov.l	r8, @-r15\n\t"				\
+		"mov.l	r9, @-r15\n\t"				\
+		"mov.l	r10, @-r15\n\t"				\
+		"mov.l	r11, @-r15\n\t"				\
+		"mov.l	r12, @-r15\n\t"				\
+		"mov.l	r13, @-r15\n\t"				\
+		"mov.l	r14, @-r15\n\t"				\
+		"mov.l	r15, @r1\t! save SP\n\t"		\
+		"mov.l	@r6, r15\t! change to new stack\n\t"	\
+		"mova	1f, %0\n\t"				\
+		"mov.l	%0, @r2\t! save PC\n\t"			\
+		"mov.l	2f, %0\n\t"				\
+		"jmp	@%0\t! call __switch_to\n\t"		\
+		" lds	r7, pr\t!  with return to new PC\n\t"	\
+		".balign	4\n"				\
+		"2:\n\t"					\
+		".long	__switch_to\n"				\
+		"1:\n\t"					\
+		"mov.l	@r15+, r14\n\t"				\
+		"mov.l	@r15+, r13\n\t"				\
+		"mov.l	@r15+, r12\n\t"				\
+		"mov.l	@r15+, r11\n\t"				\
+		"mov.l	@r15+, r10\n\t"				\
+		"mov.l	@r15+, r9\n\t"				\
+		"mov.l	@r15+, r8\n\t"				\
+		"lds.l	@r15+, pr\n\t"				\
+		"ldc.l	@r15+, gbr\n\t"				\
+		: "=z" (__last)					\
+		: "r" (__ts1), "r" (__ts2), "r" (__ts4),	\
+		  "r" (__ts5), "r" (__ts6), "r" (__ts7)		\
+		: "r3", "t");					\
+								\
+	last = __last;						\
+} while (0)
+
+#define finish_arch_switch(prev)				\
+do {								\
+	if (is_dsp_enabled(prev))				\
+		__restore_dsp(prev);				\
 } while (0)
 
 #define __uses_jump_to_uncached \
diff --git a/arch/sh/include/asm/topology.h b/arch/sh/include/asm/topology.h
index 066f0fba590e..a3f239545897 100644
--- a/arch/sh/include/asm/topology.h
+++ b/arch/sh/include/asm/topology.h
@@ -33,7 +33,6 @@
 
 #define node_to_cpumask(node)	((void)node, cpu_online_map)
 #define cpumask_of_node(node)	((void)node, cpu_online_mask)
-#define node_to_first_cpu(node)	((void)(node),0)
 
 #define pcibus_to_node(bus)	((void)(bus), -1)
 #define pcibus_to_cpumask(bus)	(pcibus_to_node(bus) == -1 ? \