Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (29 commits)
  sh: enable maple_keyb in dreamcast_defconfig.
  SH2(A) cache update
  nommu: Provide vmalloc_exec().
  add addrespace definition for sh2a.
  sh: Kill off ARCH_SUPPORTS_AOUT and remnants of a.out support.
  sh: define GENERIC_HARDIRQS_NO__DO_IRQ.
  sh: define GENERIC_LOCKBREAK.
  sh: Save NUMA node data in vmcore for crash dumps.
  sh: module_alloc() should be using vmalloc_exec().
  sh: Fix up __bug_table handling in module loader.
  sh: Add documentation and integrate into docbook build.
  sh: Fix up broken kerneldoc comments.
  maple: Kill useless private_data pointer.
  maple: Clean up maple_driver_register/unregister routines.
  input: Clean up maple keyboard driver
  maple: allow removal and reinsertion of keyboard driver module
  sh: /proc/asids depends on MMU.
  arch/sh/boards/mach-se/7343/irq.c: removed duplicated #include
  arch/sh/boards/board-ap325rxa.c: removed duplicated #include
  sh/boards/Makefile typo fix
  ...

32 files changed, 592 insertions, 397 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index cb992c3d6b71..5131d50f851a 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -48,6 +48,9 @@ config GENERIC_HWEIGHT
 config GENERIC_HARDIRQS
         def_bool y
 
+config GENERIC_HARDIRQS_NO__DO_IRQ
+        def_bool y
+
 config GENERIC_IRQ_PROBE
         def_bool y
 
@@ -63,6 +66,10 @@ config GENERIC_TIME
 config GENERIC_CLOCKEVENTS
         def_bool n
 
+config GENERIC_LOCKBREAK
+        def_bool y
+        depends on SMP && PREEMPT
+
 config SYS_SUPPORTS_PM
         bool
 
@@ -94,9 +101,6 @@ config ARCH_HAS_ILOG2_U64
 config ARCH_NO_VIRT_TO_BUS
         def_bool y
 
-config ARCH_SUPPORTS_AOUT
-        def_bool y
-
 config IO_TRAPPED
         bool
 
@@ -483,6 +487,23 @@ config CRASH_DUMP
 
           For more details see Documentation/kdump/kdump.txt
 
+config SECCOMP
+        bool "Enable seccomp to safely compute untrusted bytecode"
+        depends on PROC_FS
+        default y
+        help
+          This kernel feature is useful for number crunching applications
+          that may need to compute untrusted bytecode during their
+          execution. By using pipes or other transports made available to
+          the process as file descriptors supporting the read/write
+          syscalls, it's possible to isolate those applications in
+          their own address space using seccomp. Once seccomp is
+          enabled via prctl, it cannot be disabled and the task is only
+          allowed to execute a few safe syscalls defined by each seccomp
+          mode.
+
+          If unsure, say N.
+
 config SMP
         bool "Symmetric multi-processing support"
         depends on SYS_SUPPORTS_SMP
diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index 36f4b1f7066d..4d2d102e00d5 100644
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -182,7 +182,7 @@ if SUPERH64
 
 config SH64_PROC_ASIDS
         bool "Debug: report ASIDs through /proc/asids"
-        depends on PROC_FS
+        depends on PROC_FS && MMU
 
 config SH64_SR_WATCH
         bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index 25659ce74baa..01d85c74481d 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -95,8 +95,6 @@ head-y			:= arch/sh/kernel/init_task.o
 head-$(CONFIG_SUPERH32) += arch/sh/kernel/head_32.o
 head-$(CONFIG_SUPERH64) += arch/sh/kernel/head_64.o
 
-LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
-
 core-y                          += arch/sh/kernel/ arch/sh/mm/ arch/sh/boards/
 core-$(CONFIG_SH_FPU_EMU)       += arch/sh/math-emu/
 
@@ -145,10 +143,6 @@ cpuincdir-$(CONFIG_CPU_SH4)	+= cpu-sh4
 cpuincdir-$(CONFIG_CPU_SH5)     += cpu-sh5
 cpuincdir-y                     += cpu-common   # Must be last
 
-libs-$(CONFIG_SUPERH32)         := arch/sh/lib/ $(libs-y)
-libs-$(CONFIG_SUPERH64)         := arch/sh/lib64/ $(libs-y)
-libs-y                          += $(LIBGCC)
-
 drivers-y                       += arch/sh/drivers/
 drivers-$(CONFIG_OPROFILE)      += arch/sh/oprofile/
 
@@ -161,10 +155,16 @@ KBUILD_CFLAGS		+= -pipe $(cflags-y)
 KBUILD_CPPFLAGS         += $(cflags-y)
 KBUILD_AFLAGS           += $(cflags-y)
 
+LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
+
+libs-$(CONFIG_SUPERH32)         := arch/sh/lib/ $(libs-y)
+libs-$(CONFIG_SUPERH64)         := arch/sh/lib64/ $(libs-y)
+libs-y                          += $(LIBGCC)
+
 PHONY += maketools FORCE
 
 maketools:  include/linux/version.h FORCE
-        $(Q)$(MAKE) $(build)=arch/sh/tools arch/sh/include/asm/machtypes.h
+        $(Q)$(MAKE) $(build)=arch/sh/tools include/asm-sh/machtypes.h
 
 all: $(KBUILD_IMAGE)
 
@@ -215,4 +215,4 @@ arch/sh/lib64/syscalltab.h: arch/sh/kernel/syscalls_64.S
         $(call filechk,gen-syscalltab)
 
 CLEAN_FILES += arch/sh/lib64/syscalltab.h \
-               arch/sh/include/asm/machtypes.h
+               include/asm-sh/machtypes.h
diff --git a/arch/sh/boards/Makefile b/arch/sh/boards/Makefile
index ff9b93c5a91b..463022c7df3c 100644
--- a/arch/sh/boards/Makefile
+++ b/arch/sh/boards/Makefile
@@ -5,4 +5,4 @@ obj-$(CONFIG_SH_AP325RXA)	+= board-ap325rxa.o
 obj-$(CONFIG_SH_MAGIC_PANEL_R2) += board-magicpanelr2.o
 obj-$(CONFIG_SH_RSK7203)        += board-rsk7203.o
 obj-$(CONFIG_SH_SH7785LCR)      += board-sh7785lcr.o
-obj-$(CONFIG_SH_SHMIN)          += board-shmin..o
+obj-$(CONFIG_SH_SHMIN)          += board-shmin.o
diff --git a/arch/sh/boards/board-ap325rxa.c b/arch/sh/boards/board-ap325rxa.c
index 9c71603d29a2..025d4fe55a58 100644
--- a/arch/sh/boards/board-ap325rxa.c
+++ b/arch/sh/boards/board-ap325rxa.c
@@ -17,7 +17,6 @@
 #include <linux/mtd/physmap.h>
 #include <linux/delay.h>
 #include <linux/i2c.h>
-#include <linux/delay.h>
 #include <linux/smc911x.h>
 #include <media/soc_camera_platform.h>
 #include <media/sh_mobile_ceu.h>
diff --git a/arch/sh/boards/mach-se/7343/irq.c b/arch/sh/boards/mach-se/7343/irq.c
index 5d96e2eef82a..051c29d4eae0 100644
--- a/arch/sh/boards/mach-se/7343/irq.c
+++ b/arch/sh/boards/mach-se/7343/irq.c
@@ -13,7 +13,6 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
-#include <linux/irq.h>
 #include <linux/io.h>
 #include <mach-se/mach/se7343.h>
 
diff --git a/arch/sh/configs/dreamcast_defconfig b/arch/sh/configs/dreamcast_defconfig
index d4075283956d..3dc1cbd8a981 100644
--- a/arch/sh/configs/dreamcast_defconfig
+++ b/arch/sh/configs/dreamcast_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.26
-# Wed Jul 30 01:34:24 2008
+# Linux kernel version: 2.6.27-rc1
+# Mon Aug  4 16:49:13 2008
 #
 CONFIG_SUPERH=y
 CONFIG_SUPERH32=y
@@ -11,6 +11,7 @@ CONFIG_GENERIC_BUG=y
 CONFIG_GENERIC_FIND_NEXT_BIT=y
 CONFIG_GENERIC_HWEIGHT=y
 CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
 CONFIG_GENERIC_IRQ_PROBE=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
 CONFIG_GENERIC_TIME=y
@@ -21,7 +22,6 @@ CONFIG_LOCKDEP_SUPPORT=y
 # CONFIG_ARCH_HAS_ILOG2_U32 is not set
 # CONFIG_ARCH_HAS_ILOG2_U64 is not set
 CONFIG_ARCH_NO_VIRT_TO_BUS=y
-CONFIG_ARCH_SUPPORTS_AOUT=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
 
 #
@@ -87,6 +87,7 @@ CONFIG_HAVE_OPROFILE=y
 # CONFIG_USE_GENERIC_SMP_HELPERS is not set
 CONFIG_HAVE_CLK=y
 CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
 CONFIG_SLABINFO=y
 CONFIG_RT_MUTEXES=y
 # CONFIG_TINY_SHMEM is not set
@@ -284,6 +285,7 @@ CONFIG_HZ=250
 # CONFIG_SCHED_HRTICK is not set
 # CONFIG_KEXEC is not set
 # CONFIG_CRASH_DUMP is not set
+CONFIG_SECCOMP=y
 # CONFIG_PREEMPT_NONE is not set
 # CONFIG_PREEMPT_VOLUNTARY is not set
 CONFIG_PREEMPT=y
@@ -317,10 +319,6 @@ CONFIG_PCI_LEGACY=y
 #
 CONFIG_BINFMT_ELF=y
 # CONFIG_BINFMT_MISC is not set
-
-#
-# Networking
-#
 CONFIG_NET=y
 
 #
@@ -555,7 +553,7 @@ CONFIG_INPUT_KEYBOARD=y
 # CONFIG_KEYBOARD_XTKBD is not set
 # CONFIG_KEYBOARD_NEWTON is not set
 # CONFIG_KEYBOARD_STOWAWAY is not set
-# CONFIG_KEYBOARD_MAPLE is not set
+CONFIG_KEYBOARD_MAPLE=y
 # CONFIG_KEYBOARD_SH_KEYSC is not set
 CONFIG_INPUT_MOUSE=y
 # CONFIG_MOUSE_PS2 is not set
diff --git a/arch/sh/include/asm/a.out.h b/arch/sh/include/asm/a.out.h
deleted file mode 100644
index 1f93130e179c..000000000000
--- a/arch/sh/include/asm/a.out.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#ifndef __ASM_SH_A_OUT_H
-#define __ASM_SH_A_OUT_H
-
-struct exec
-{
-  unsigned long a_info;         /* Use macros N_MAGIC, etc for access */
-  unsigned a_text;              /* length of text, in bytes */
-  unsigned a_data;              /* length of data, in bytes */
-  unsigned a_bss;               /* length of uninitialized data area for file, in bytes */
-  unsigned a_syms;              /* length of symbol table data in file, in bytes */
-  unsigned a_entry;             /* start address */
-  unsigned a_trsize;            /* length of relocation info for text, in bytes */
-  unsigned a_drsize;            /* length of relocation info for data, in bytes */
-};
-
-#define N_TRSIZE(a)     ((a).a_trsize)
-#define N_DRSIZE(a)     ((a).a_drsize)
-#define N_SYMSIZE(a)    ((a).a_syms)
-
-#endif /* __ASM_SH_A_OUT_H */
diff --git a/arch/sh/include/asm/ptrace.h b/arch/sh/include/asm/ptrace.h
index 643ab5a7cf3b..b86aeabba61a 100644
--- a/arch/sh/include/asm/ptrace.h
+++ b/arch/sh/include/asm/ptrace.h
@@ -104,6 +104,15 @@ struct pt_dspregs {
 
 extern void show_regs(struct pt_regs *);
 
+/*
+ * These are defined as per linux/ptrace.h.
+ */
+struct task_struct;
+
+#define arch_has_single_step()  (1)
+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 \
diff --git a/arch/sh/include/asm/seccomp.h b/arch/sh/include/asm/seccomp.h
new file mode 100644
index 000000000000..3280ed3802ef
--- /dev/null
+++ b/arch/sh/include/asm/seccomp.h
@@ -0,0 +1,10 @@
+#ifndef __ASM_SECCOMP_H
+
+#include <linux/unistd.h>
+
+#define __NR_seccomp_read __NR_read
+#define __NR_seccomp_write __NR_write
+#define __NR_seccomp_exit __NR_exit
+#define __NR_seccomp_sigreturn __NR_rt_sigreturn
+
+#endif /* __ASM_SECCOMP_H */
diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h
index eeb4c747119e..0a894cafb1dd 100644
--- a/arch/sh/include/asm/thread_info.h
+++ b/arch/sh/include/asm/thread_info.h
@@ -117,24 +117,45 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
 #define TIF_RESTORE_SIGMASK     3       /* restore signal mask in do_signal() */
 #define TIF_SINGLESTEP          4       /* singlestepping active */
-#define TIF_SYSCALL_AUDIT       5
+#define TIF_SYSCALL_AUDIT       5       /* syscall auditing active */
+#define TIF_SECCOMP             6       /* secure computing */
+#define TIF_NOTIFY_RESUME       7       /* callback before returning to user */
 #define TIF_USEDFPU             16      /* FPU was used by this task this quantum (SMP) */
 #define TIF_POLLING_NRFLAG      17      /* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_MEMDIE              18
-#define TIF_FREEZE              19
-
-#define _TIF_SYSCALL_TRACE      (1<<TIF_SYSCALL_TRACE)
-#define _TIF_SIGPENDING         (1<<TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED       (1<<TIF_NEED_RESCHED)
-#define _TIF_RESTORE_SIGMASK    (1<<TIF_RESTORE_SIGMASK)
-#define _TIF_SINGLESTEP         (1<<TIF_SINGLESTEP)
-#define _TIF_SYSCALL_AUDIT              (1<<TIF_SYSCALL_AUDIT)
-#define _TIF_USEDFPU            (1<<TIF_USEDFPU)
-#define _TIF_POLLING_NRFLAG     (1<<TIF_POLLING_NRFLAG)
-#define _TIF_FREEZE             (1<<TIF_FREEZE)
-
-#define _TIF_WORK_MASK          0x000000FE      /* work to do on interrupt/exception return */
-#define _TIF_ALLWORK_MASK       0x000000FF      /* work to do on any return to u-space */
+#define TIF_FREEZE              19      /* Freezing for suspend */
+
+#define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)
+#define _TIF_RESTORE_SIGMASK    (1 << TIF_RESTORE_SIGMASK)
+#define _TIF_SINGLESTEP         (1 << TIF_SINGLESTEP)
+#define _TIF_SYSCALL_AUDIT      (1 << TIF_SYSCALL_AUDIT)
+#define _TIF_SECCOMP            (1 << TIF_SECCOMP)
+#define _TIF_NOTIFY_RESUME      (1 << TIF_NOTIFY_RESUME)
+#define _TIF_USEDFPU            (1 << TIF_USEDFPU)
+#define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
+#define _TIF_FREEZE             (1 << TIF_FREEZE)
+
+/*
+ * _TIF_ALLWORK_MASK and _TIF_WORK_MASK need to fit within a byte, or we
+ * blow the tst immediate size constraints and need to fix up
+ * arch/sh/kernel/entry-common.S.
+ */
+
+/* work to do in syscall trace */
+#define _TIF_WORK_SYSCALL_MASK  (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \
+                                 _TIF_SYSCALL_AUDIT | _TIF_SECCOMP)
+
+/* work to do on any return to u-space */
+#define _TIF_ALLWORK_MASK       (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING      | \
+                                 _TIF_NEED_RESCHED  | _TIF_SYSCALL_AUDIT   | \
+                                 _TIF_SINGLESTEP    | _TIF_RESTORE_SIGMASK | \
+                                 _TIF_NOTIFY_RESUME)
+
+/* work to do on interrupt/exception return */
+#define _TIF_WORK_MASK          (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \
+                                 _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP))
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/sh/include/asm/tlb_64.h b/arch/sh/include/asm/tlb_64.h
index 0a96f3af69e3..ef0ae2a28f23 100644
--- a/arch/sh/include/asm/tlb_64.h
+++ b/arch/sh/include/asm/tlb_64.h
@@ -21,11 +21,9 @@
 #ifndef __ASSEMBLY__
 
 /**
- * for_each_dtlb_entry
+ * for_each_dtlb_entry - Iterate over free (non-wired) DTLB entries
  *
  * @tlb:        TLB entry
- *
- * Iterate over free (non-wired) DTLB entries
  */
 #define for_each_dtlb_entry(tlb)                \
         for (tlb  = cpu_data->dtlb.first;       \
@@ -33,11 +31,9 @@
              tlb += cpu_data->dtlb.step)
 
 /**
- * for_each_itlb_entry
+ * for_each_itlb_entry - Iterate over free (non-wired) ITLB entries
  *
  * @tlb:        TLB entry
- *
- * Iterate over free (non-wired) ITLB entries
  */
 #define for_each_itlb_entry(tlb)                \
         for (tlb  = cpu_data->itlb.first;       \
@@ -45,11 +41,9 @@
              tlb += cpu_data->itlb.step)
 
 /**
- * __flush_tlb_slot
+ * __flush_tlb_slot - Flushes TLB slot @slot.
  *
  * @slot:       Address of TLB slot.
- *
- * Flushes TLB slot @slot.
  */
 static inline void __flush_tlb_slot(unsigned long long slot)
 {
diff --git a/arch/sh/include/cpu-sh2/cpu/cache.h b/arch/sh/include/cpu-sh2/cpu/cache.h
index 4e0b16500686..673515bc4135 100644
--- a/arch/sh/include/cpu-sh2/cpu/cache.h
+++ b/arch/sh/include/cpu-sh2/cpu/cache.h
@@ -21,11 +21,11 @@
 #define CCR             0xffffffec
 
 #define CCR_CACHE_CE    0x01    /* Cache enable */
-#define CCR_CACHE_WT    0x06    /* CCR[bit1=1,bit2=1] */
+#define CCR_CACHE_WT    0x02    /* CCR[bit1=1,bit2=1] */
                                 /* 0x00000000-0x7fffffff: Write-through  */
                                 /* 0x80000000-0x9fffffff: Write-back     */
                                 /* 0xc0000000-0xdfffffff: Write-through  */
-#define CCR_CACHE_CB    0x00    /* CCR[bit1=0,bit2=0] */
+#define CCR_CACHE_CB    0x04    /* CCR[bit1=0,bit2=0] */
                                 /* 0x00000000-0x7fffffff: Write-back     */
                                 /* 0x80000000-0x9fffffff: Write-through  */
                                 /* 0xc0000000-0xdfffffff: Write-back     */
@@ -36,6 +36,8 @@
 
 #define CCR_CACHE_ENABLE        CCR_CACHE_CE
 #define CCR_CACHE_INVALIDATE    CCR_CACHE_CF
+#define CACHE_PHYSADDR_MASK     0x1ffffc00
+
 #endif
 
 #endif /* __ASM_CPU_SH2_CACHE_H */
diff --git a/arch/sh/include/cpu-sh2a/cpu/addrspace.h b/arch/sh/include/cpu-sh2a/cpu/addrspace.h
new file mode 100644
index 000000000000..31eb4b58aa6d
--- /dev/null
+++ b/arch/sh/include/cpu-sh2a/cpu/addrspace.h
@@ -0,0 +1,10 @@
+#ifndef __ASM_SH_CPU_SH2A_ADDRSPACE_H
+#define __ASM_SH_CPU_SH2A_ADDRSPACE_H
+
+#define P0SEG           0x00000000
+#define P1SEG           0x00000000
+#define P2SEG           0x20000000
+#define P3SEG           0x40000000
+#define P4SEG           0x60000000
+
+#endif /* __ASM_SH_CPU_SH2A_ADDRSPACE_H */
diff --git a/arch/sh/include/cpu-sh2a/cpu/cache.h b/arch/sh/include/cpu-sh2a/cpu/cache.h
index afe228b3f493..defb0baa5a06 100644
--- a/arch/sh/include/cpu-sh2a/cpu/cache.h
+++ b/arch/sh/include/cpu-sh2a/cpu/cache.h
@@ -36,5 +36,8 @@
 
 #define CCR_CACHE_ENABLE        (CCR_CACHE_OCE | CCR_CACHE_ICE)
 #define CCR_CACHE_INVALIDATE    (CCR_CACHE_OCI | CCR_CACHE_ICI)
+#define CCR_ICACHE_INVALIDATE   CCR_CACHE_ICI
+#define CCR_OCACHE_INVALIDATE   CCR_CACHE_OCI
+#define CACHE_PHYSADDR_MASK     0x1ffffc00
 
 #endif /* __ASM_CPU_SH2A_CACHE_H */
diff --git a/arch/sh/include/cpu-sh2a/cpu/cacheflush.h b/arch/sh/include/cpu-sh2a/cpu/cacheflush.h
new file mode 100644
index 000000000000..3d3b9205d2ac
--- /dev/null
+++ b/arch/sh/include/cpu-sh2a/cpu/cacheflush.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_CPU_SH2A_CACHEFLUSH_H
+#define __ASM_CPU_SH2A_CACHEFLUSH_H
+
+/* 
+ * Cache flushing:
+ *
+ *  - flush_cache_all() flushes entire cache
+ *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
+ *  - flush_cache_dup mm(mm) handles cache flushing when forking
+ *  - flush_cache_page(mm, vmaddr, pfn) flushes a single page
+ *  - flush_cache_range(vma, start, end) flushes a range of pages
+ *
+ *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
+ *  - flush_icache_range(start, end) flushes(invalidates) a range for icache
+ *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
+ *
+ *  Caches are indexed (effectively) by physical address on SH-2, so
+ *  we don't need them.
+ */
+#define flush_cache_all()                       do { } while (0)
+#define flush_cache_mm(mm)                      do { } while (0)
+#define flush_cache_dup_mm(mm)                  do { } while (0)
+#define flush_cache_range(vma, start, end)      do { } while (0)
+#define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
+#define flush_dcache_page(page)                 do { } while (0)
+#define flush_dcache_mmap_lock(mapping)         do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)       do { } while (0)
+void flush_icache_range(unsigned long start, unsigned long end);
+#define flush_icache_page(vma,pg)               do { } while (0)
+#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
+#define flush_cache_sigtramp(vaddr)             do { } while (0)
+
+#define p3_cache_init()                         do { } while (0)
+#endif /* __ASM_CPU_SH2A_CACHEFLUSH_H */
diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index dcdf959a3d44..8a8a993f55ea 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -199,7 +199,7 @@ EXPORT_SYMBOL(sq_remap);
 
 /**
  * sq_unmap - Unmap a Store Queue allocation
- * @map: Pre-allocated Store Queue mapping.
+ * @vaddr: Pre-allocated Store Queue mapping.
  *
  * Unmaps the store queue allocation @map that was previously created by
  * sq_remap(). Also frees up the pte that was previously inserted into
diff --git a/arch/sh/kernel/cpu/sh5/entry.S b/arch/sh/kernel/cpu/sh5/entry.S
index ca08e7f26a3a..04c7da968146 100644
--- a/arch/sh/kernel/cpu/sh5/entry.S
+++ b/arch/sh/kernel/cpu/sh5/entry.S
@@ -987,11 +987,11 @@ work_resched:
 work_notifysig:
         gettr   tr1, LINK
 
-        movi    do_signal, r6
+        movi    do_notify_resume, r6
         ptabs   r6, tr0
         or      SP, ZERO, r2
-        or      ZERO, ZERO, r3
-        blink   tr0, LINK           /* Call do_signal(regs, 0), return here */
+        or      r7, ZERO, r3
+        blink   tr0, LINK           /* Call do_notify_resume(regs, current_thread_info->flags), return here */
 
 restore_all:
         /* Do prefetches */
@@ -1300,18 +1300,20 @@ syscall_allowed:
 
         getcon  KCR0, r2
         ld.l    r2, TI_FLAGS, r4
-        movi    (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | _TIF_SYSCALL_AUDIT), r6
+        movi    _TIF_WORK_SYSCALL_MASK, r6
         and     r6, r4, r6
         beq/l   r6, ZERO, tr0
 
         /* Trace it by calling syscall_trace before and after */
-        movi    syscall_trace, r4
+        movi    do_syscall_trace_enter, r4
         or      SP, ZERO, r2
-        or      ZERO, ZERO, r3
         ptabs   r4, tr0
         blink   tr0, LINK
 
-        /* Reload syscall number as r5 is trashed by syscall_trace */
+        /* Save the retval */
+        st.q    SP, FRAME_R(2), r2
+
+        /* Reload syscall number as r5 is trashed by do_syscall_trace_enter */
         ld.q    SP, FRAME_S(FSYSCALL_ID), r5
         andi    r5, 0x1ff, r5
 
@@ -1343,9 +1345,8 @@ syscall_ret_trace:
         /* We get back here only if under trace */
         st.q    SP, FRAME_R(9), r2      /* Save return value */
 
-        movi    syscall_trace, LINK
+        movi    do_syscall_trace_leave, LINK
         or      SP, ZERO, r2
-        movi    1, r3
         ptabs   LINK, tr0
         blink   tr0, LINK
 
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index 5e0dd1933847..0bc17def55a7 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -202,7 +202,7 @@ work_resched:
 syscall_exit_work:
         ! r0: current_thread_info->flags
         ! r8: current_thread_info
-        tst     #_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | _TIF_SYSCALL_AUDIT, r0
+        tst     #_TIF_WORK_SYSCALL_MASK, r0
         bt/s    work_pending
          tst    #_TIF_NEED_RESCHED, r0
 #ifdef CONFIG_TRACE_IRQFLAGS
@@ -211,10 +211,8 @@ syscall_exit_work:
          nop
 #endif
         sti
-        ! XXX setup arguments...
         mov     r15, r4
-        mov     #1, r5
-        mov.l   4f, r0                  ! do_syscall_trace
+        mov.l   8f, r0                  ! do_syscall_trace_leave
         jsr     @r0
          nop
         bra     resume_userspace
@@ -223,12 +221,11 @@ syscall_exit_work:
         .align  2
 syscall_trace_entry:
         !                       Yes it is traced.
-        ! XXX setup arguments...
         mov     r15, r4
-        mov     #0, r5
-        mov.l   4f, r11         ! Call do_syscall_trace which notifies
+        mov.l   7f, r11         ! Call do_syscall_trace_enter which notifies
         jsr     @r11            ! superior (will chomp R[0-7])
          nop
+        mov.l   r0, @(OFF_R0,r15)       ! Save return value
         !                       Reload R0-R4 from kernel stack, where the
         !                       parent may have modified them using
         !                       ptrace(POKEUSR).  (Note that R0-R2 are
@@ -351,7 +348,7 @@ ENTRY(system_call)
         !
         get_current_thread_info r8, r10
         mov.l   @(TI_FLAGS,r8), r8
-        mov     #(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT), r10
+        mov     #_TIF_WORK_SYSCALL_MASK, r10
         tst     r10, r8
         bf      syscall_trace_entry
         !
@@ -389,8 +386,9 @@ syscall_exit:
 #endif
 2:      .long   NR_syscalls
 3:      .long   sys_call_table
-4:      .long   do_syscall_trace
 #ifdef CONFIG_TRACE_IRQFLAGS
 5:      .long   trace_hardirqs_on
 6:      .long   trace_hardirqs_off
 #endif
+7:      .long   do_syscall_trace_enter
+8:      .long   do_syscall_trace_leave
diff --git a/arch/sh/kernel/machine_kexec.c b/arch/sh/kernel/machine_kexec.c
index ec1eadce4aaa..4703dff174d5 100644
--- a/arch/sh/kernel/machine_kexec.c
+++ b/arch/sh/kernel/machine_kexec.c
@@ -13,6 +13,7 @@
 #include <linux/kexec.h>
 #include <linux/delay.h>
 #include <linux/reboot.h>
+#include <linux/numa.h>
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
 #include <asm/mmu_context.h>
@@ -104,3 +105,10 @@ void machine_kexec(struct kimage *image)
         (*rnk)(page_list, reboot_code_buffer, image->start, vbr_reg);
 }
 
+void arch_crash_save_vmcoreinfo(void)
+{
+#ifdef CONFIG_NUMA
+        VMCOREINFO_SYMBOL(node_data);
+        VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
+#endif
+}
diff --git a/arch/sh/kernel/module.c b/arch/sh/kernel/module.c
index 5482e65375a9..c43081039dd5 100644
--- a/arch/sh/kernel/module.c
+++ b/arch/sh/kernel/module.c
@@ -27,6 +27,7 @@
 #include <linux/moduleloader.h>
 #include <linux/elf.h>
 #include <linux/vmalloc.h>
+#include <linux/bug.h>
 #include <linux/fs.h>
 #include <linux/string.h>
 #include <linux/kernel.h>
@@ -36,7 +37,8 @@ void *module_alloc(unsigned long size)
 {
         if (size == 0)
                 return NULL;
-        return vmalloc(size);
+
+        return vmalloc_exec(size);
 }
 
 
@@ -145,9 +147,10 @@ int module_finalize(const Elf_Ehdr *hdr,
                     const Elf_Shdr *sechdrs,
                     struct module *me)
 {
-        return 0;
+        return module_bug_finalize(hdr, sechdrs, me);
 }
 
 void module_arch_cleanup(struct module *mod)
 {
+        module_bug_cleanup(mod);
 }
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 2bc72def5cf8..035cb300d3dc 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -20,6 +20,8 @@
 #include <linux/signal.h>
 #include <linux/io.h>
 #include <linux/audit.h>
+#include <linux/seccomp.h>
+#include <linux/tracehook.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/system.h>
@@ -57,7 +59,23 @@ static inline int put_stack_long(struct task_struct *task, int offset,
         return 0;
 }
 
-static void ptrace_disable_singlestep(struct task_struct *child)
+void user_enable_single_step(struct task_struct *child)
+{
+        struct pt_regs *regs = task_pt_regs(child);
+        long pc;
+
+        pc = get_stack_long(child, (long)&regs->pc);
+
+        /* Next scheduling will set up UBC */
+        if (child->thread.ubc_pc == 0)
+                ubc_usercnt += 1;
+
+        child->thread.ubc_pc = pc;
+
+        set_tsk_thread_flag(child, TIF_SINGLESTEP);
+}
+
+void user_disable_single_step(struct task_struct *child)
 {
         clear_tsk_thread_flag(child, TIF_SINGLESTEP);
 
@@ -81,7 +99,7 @@ static void ptrace_disable_singlestep(struct task_struct *child)
  */
 void ptrace_disable(struct task_struct *child)
 {
-        ptrace_disable_singlestep(child);
+        user_disable_single_step(child);
 }
 
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)
@@ -90,12 +108,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         int ret;
 
         switch (request) {
-        /* when I and D space are separate, these will need to be fixed. */
-        case PTRACE_PEEKTEXT: /* read word at location addr. */
-        case PTRACE_PEEKDATA:
-                ret = generic_ptrace_peekdata(child, addr, data);
-                break;
-
         /* read the word at location addr in the USER area. */
         case PTRACE_PEEKUSR: {
                 unsigned long tmp;
@@ -125,12 +137,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
         }
 
-        /* when I and D space are separate, this will have to be fixed. */
-        case PTRACE_POKETEXT: /* write the word at location addr. */
-        case PTRACE_POKEDATA:
-                ret = generic_ptrace_pokedata(child, addr, data);
-                break;
-
         case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
                 ret = -EIO;
                 if ((addr & 3) || addr < 0 ||
@@ -151,67 +157,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 }
                 break;
 
-        case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
-        case PTRACE_CONT: { /* restart after signal. */
-                ret = -EIO;
-                if (!valid_signal(data))
-                        break;
-                if (request == PTRACE_SYSCALL)
-                        set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-                else
-                        clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-
-                ptrace_disable_singlestep(child);
-
-                child->exit_code = data;
-                wake_up_process(child);
-                ret = 0;
-                break;
-        }
-
-/*
- * make the child exit.  Best I can do is send it a sigkill.
- * perhaps it should be put in the status that it wants to
- * exit.
- */
-        case PTRACE_KILL: {
-                ret = 0;
-                if (child->exit_state == EXIT_ZOMBIE)   /* already dead */
-                        break;
-                ptrace_disable_singlestep(child);
-                child->exit_code = SIGKILL;
-                wake_up_process(child);
-                break;
-        }
-
-        case PTRACE_SINGLESTEP: {  /* set the trap flag. */
-                long pc;
-                struct pt_regs *regs = NULL;
-
-                ret = -EIO;
-                if (!valid_signal(data))
-                        break;
-                clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-                if ((child->ptrace & PT_DTRACE) == 0) {
-                        /* Spurious delayed TF traps may occur */
-                        child->ptrace |= PT_DTRACE;
-                }
-
-                pc = get_stack_long(child, (long)&regs->pc);
-
-                /* Next scheduling will set up UBC */
-                if (child->thread.ubc_pc == 0)
-                        ubc_usercnt += 1;
-                child->thread.ubc_pc = pc;
-
-                set_tsk_thread_flag(child, TIF_SINGLESTEP);
-                child->exit_code = data;
-                /* give it a chance to run. */
-                wake_up_process(child);
-                ret = 0;
-                break;
-        }
-
 #ifdef CONFIG_SH_DSP
         case PTRACE_GETDSPREGS: {
                 unsigned long dp;
@@ -272,39 +217,49 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         return ret;
 }
 
-asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
+static inline int audit_arch(void)
 {
-        struct task_struct *tsk = current;
+        int arch = EM_SH;
 
-        if (unlikely(current->audit_context) && entryexit)
-                audit_syscall_exit(AUDITSC_RESULT(regs->regs[0]),
-                                   regs->regs[0]);
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+        arch |= __AUDIT_ARCH_LE;
+#endif
 
-        if (!test_thread_flag(TIF_SYSCALL_TRACE) &&
-            !test_thread_flag(TIF_SINGLESTEP))
-                goto out;
-        if (!(tsk->ptrace & PT_PTRACED))
-                goto out;
+        return arch;
+}
 
-        /* the 0x80 provides a way for the tracing parent to distinguish
-           between a syscall stop and SIGTRAP delivery */
-        ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) &&
-                                 !test_thread_flag(TIF_SINGLESTEP) ? 0x80 : 0));
+asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
+{
+        long ret = 0;
 
-        /*
-         * this isn't the same as continuing with a signal, but it will do
-         * for normal use.  strace only continues with a signal if the
-         * stopping signal is not SIGTRAP.  -brl
-         */
-        if (tsk->exit_code) {
-                send_sig(tsk->exit_code, tsk, 1);
-                tsk->exit_code = 0;
-        }
+        secure_computing(regs->regs[0]);
+
+        if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+            tracehook_report_syscall_entry(regs))
+                /*
+                 * Tracing decided this syscall should not happen.
+                 * We'll return a bogus call number to get an ENOSYS
+                 * error, but leave the original number in regs->regs[0].
+                 */
+                ret = -1L;
 
-out:
-        if (unlikely(current->audit_context) && !entryexit)
-                audit_syscall_entry(AUDIT_ARCH_SH, regs->regs[3],
+        if (unlikely(current->audit_context))
+                audit_syscall_entry(audit_arch(), regs->regs[3],
                                     regs->regs[4], regs->regs[5],
                                     regs->regs[6], regs->regs[7]);
 
+        return ret ?: regs->regs[0];
+}
+
+asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
+{
+        int step;
+
+        if (unlikely(current->audit_context))
+                audit_syscall_exit(AUDITSC_RESULT(regs->regs[0]),
+                                   regs->regs[0]);
+
+        step = test_thread_flag(TIF_SINGLESTEP);
+        if (step || test_thread_flag(TIF_SYSCALL_TRACE))
+                tracehook_report_syscall_exit(regs, step);
 }
diff --git a/arch/sh/kernel/ptrace_64.c b/arch/sh/kernel/ptrace_64.c
index d453c47dc522..5922edd416db 100644
--- a/arch/sh/kernel/ptrace_64.c
+++ b/arch/sh/kernel/ptrace_64.c
@@ -27,6 +27,8 @@
 #include <linux/signal.h>
 #include <linux/syscalls.h>
 #include <linux/audit.h>
+#include <linux/seccomp.h>
+#include <linux/tracehook.h>
 #include <asm/io.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -120,18 +122,23 @@ put_fpu_long(struct task_struct *task, unsigned long addr, unsigned long data)
         return 0;
 }
 
+void user_enable_single_step(struct task_struct *child)
+{
+        struct pt_regs *regs = child->thread.uregs;
+
+        regs->sr |= SR_SSTEP;   /* auto-resetting upon exception */
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+        regs->sr &= ~SR_SSTEP;
+}
 
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
         int ret;
 
         switch (request) {
-        /* when I and D space are separate, these will need to be fixed. */
-        case PTRACE_PEEKTEXT: /* read word at location addr. */
-        case PTRACE_PEEKDATA:
-                ret = generic_ptrace_peekdata(child, addr, data);
-                break;
-
         /* read the word at location addr in the USER area. */
         case PTRACE_PEEKUSR: {
                 unsigned long tmp;
@@ -154,12 +161,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
         }
 
-        /* when I and D space are separate, this will have to be fixed. */
-        case PTRACE_POKETEXT: /* write the word at location addr. */
-        case PTRACE_POKEDATA:
-                ret = generic_ptrace_pokedata(child, addr, data);
-                break;
-
         case PTRACE_POKEUSR:
                 /* write the word at location addr in the USER area. We must
                    disallow any changes to certain SR bits or u_fpvalid, since
@@ -191,58 +192,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 }
                 break;
 
-        case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
-        case PTRACE_CONT: { /* restart after signal. */
-                ret = -EIO;
-                if (!valid_signal(data))
-                        break;
-                if (request == PTRACE_SYSCALL)
-                        set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-                else
-                        clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-                child->exit_code = data;
-                wake_up_process(child);
-                ret = 0;
-                break;
-        }
-
-/*
- * make the child exit.  Best I can do is send it a sigkill.
- * perhaps it should be put in the status that it wants to
- * exit.
- */
-        case PTRACE_KILL: {
-                ret = 0;
-                if (child->exit_state == EXIT_ZOMBIE)   /* already dead */
-                        break;
-                child->exit_code = SIGKILL;
-                wake_up_process(child);
-                break;
-        }
-
-        case PTRACE_SINGLESTEP: {  /* set the trap flag. */
-                struct pt_regs *regs;
-
-                ret = -EIO;
-                if (!valid_signal(data))
-                        break;
-                clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-                if ((child->ptrace & PT_DTRACE) == 0) {
-                        /* Spurious delayed TF traps may occur */
-                        child->ptrace |= PT_DTRACE;
-                }
-
-                regs = child->thread.uregs;
-
-                regs->sr |= SR_SSTEP;   /* auto-resetting upon exception */
-
-                child->exit_code = data;
-                /* give it a chance to run. */
-                wake_up_process(child);
-                ret = 0;
-                break;
-        }
-
         default:
                 ret = ptrace_request(child, request, addr, data);
                 break;
@@ -273,38 +222,51 @@ asmlinkage int sh64_ptrace(long request, long pid, long addr, long data)
         return sys_ptrace(request, pid, addr, data);
 }
 
-asmlinkage void syscall_trace(struct pt_regs *regs, int entryexit)
+static inline int audit_arch(void)
 {
-        struct task_struct *tsk = current;
+        int arch = EM_SH;
 
-        if (unlikely(current->audit_context) && entryexit)
-                audit_syscall_exit(AUDITSC_RESULT(regs->regs[9]),
-                                   regs->regs[9]);
+#ifdef CONFIG_64BIT
+        arch |= __AUDIT_ARCH_64BIT;
+#endif
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+        arch |= __AUDIT_ARCH_LE;
+#endif
 
-        if (!test_thread_flag(TIF_SYSCALL_TRACE) &&
-            !test_thread_flag(TIF_SINGLESTEP))
-                goto out;
-        if (!(tsk->ptrace & PT_PTRACED))
-                goto out;
-
-        ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) &&
-                                !test_thread_flag(TIF_SINGLESTEP) ? 0x80 : 0));
-
-        /*
-         * this isn't the same as continuing with a signal, but it will do
-         * for normal use.  strace only continues with a signal if the
-         * stopping signal is not SIGTRAP.  -brl
-         */
-        if (tsk->exit_code) {
-                send_sig(tsk->exit_code, tsk, 1);
-                tsk->exit_code = 0;
-        }
+        return arch;
+}
 
-out:
-        if (unlikely(current->audit_context) && !entryexit)
-                audit_syscall_entry(AUDIT_ARCH_SH, regs->regs[1],
+asmlinkage long long do_syscall_trace_enter(struct pt_regs *regs)
+{
+        long long ret = 0;
+
+        secure_computing(regs->regs[9]);
+
+        if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+            tracehook_report_syscall_entry(regs))
+                /*
+                 * Tracing decided this syscall should not happen.
+                 * We'll return a bogus call number to get an ENOSYS
+                 * error, but leave the original number in regs->regs[0].
+                 */
+                ret = -1LL;
+
+        if (unlikely(current->audit_context))
+                audit_syscall_entry(audit_arch(), regs->regs[1],
                                     regs->regs[2], regs->regs[3],
                                     regs->regs[4], regs->regs[5]);
+
+        return ret ?: regs->regs[9];
+}
+
+asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
+{
+        if (unlikely(current->audit_context))
+                audit_syscall_exit(AUDITSC_RESULT(regs->regs[9]),
+                                   regs->regs[9]);
+
+        if (test_thread_flag(TIF_SYSCALL_TRACE))
+                tracehook_report_syscall_exit(regs, 0);
 }
 
 /* Called with interrupts disabled */
@@ -338,5 +300,5 @@ asmlinkage void do_software_break_point(unsigned long long vec,
  */
 void ptrace_disable(struct task_struct *child)
 {
-        /* nothing to do.. */
+        user_disable_single_step(child);
 }
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 6339d0c95715..a35207655e7b 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -25,6 +25,7 @@
 #include <linux/smp.h>
 #include <linux/err.h>
 #include <linux/debugfs.h>
+#include <linux/crash_dump.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/page.h>
@@ -286,6 +287,25 @@ static void __init setup_memory(void)
 extern void __init setup_memory(void);
 #endif
 
+/*
+ * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by
+ * is_kdump_kernel() to determine if we are booting after a panic. Hence
+ * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE.
+ */
+#ifdef CONFIG_CRASH_DUMP
+/* elfcorehdr= specifies the location of elf core header
+ * stored by the crashed kernel.
+ */
+static int __init parse_elfcorehdr(char *arg)
+{
+        if (!arg)
+                return -EINVAL;
+        elfcorehdr_addr = memparse(arg, &arg);
+        return 0;
+}
+early_param("elfcorehdr", parse_elfcorehdr);
+#endif
+
 void __init setup_arch(char **cmdline_p)
 {
         enable_mmu();
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index 4bbbde895a53..51689d29ad45 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -24,6 +24,7 @@
 #include <linux/binfmts.h>
 #include <linux/freezer.h>
 #include <linux/io.h>
+#include <linux/tracehook.h>
 #include <asm/system.h>
 #include <asm/ucontext.h>
 #include <asm/uaccess.h>
@@ -507,14 +508,13 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
                 switch (regs->regs[0]) {
                         case -ERESTART_RESTARTBLOCK:
                         case -ERESTARTNOHAND:
+                        no_system_call_restart:
                                 regs->regs[0] = -EINTR;
                                 break;
 
                         case -ERESTARTSYS:
-                                if (!(ka->sa.sa_flags & SA_RESTART)) {
-                                        regs->regs[0] = -EINTR;
-                                        break;
-                                }
+                                if (!(ka->sa.sa_flags & SA_RESTART))
+                                        goto no_system_call_restart;
                         /* fallthrough */
                         case -ERESTARTNOINTR:
                                 regs->regs[0] = save_r0;
@@ -589,12 +589,15 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0)
                          * clear the TIF_RESTORE_SIGMASK flag */
                         if (test_thread_flag(TIF_RESTORE_SIGMASK))
                                 clear_thread_flag(TIF_RESTORE_SIGMASK);
+
+                        tracehook_signal_handler(signr, &info, &ka, regs,
+                                        test_thread_flag(TIF_SINGLESTEP));
                 }
 
                 return;
         }
 
- no_signal:
+no_signal:
         /* Did we come from a system call? */
         if (regs->tra >= 0) {
                 /* Restart the system call - no handlers present */
@@ -618,9 +621,14 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0)
 }
 
 asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned int save_r0,
-                                 __u32 thread_info_flags)
+                                 unsigned long thread_info_flags)
 {
         /* deal with pending signal delivery */
-        if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+        if (thread_info_flags & _TIF_SIGPENDING)
                 do_signal(regs, save_r0);
+
+        if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+                clear_thread_flag(TIF_NOTIFY_RESUME);
+                tracehook_notify_resume(regs);
+        }
 }
diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c
index 552eb810cd85..1d62dfef77f1 100644
--- a/arch/sh/kernel/signal_64.c
+++ b/arch/sh/kernel/signal_64.c
@@ -22,6 +22,7 @@
 #include <linux/ptrace.h>
 #include <linux/unistd.h>
 #include <linux/stddef.h>
+#include <linux/tracehook.h>
 #include <asm/ucontext.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -42,7 +43,84 @@
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
-asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ *
+ * Note that we go through the signals twice: once to check the signals that
+ * the kernel can handle, and then we build all the user-level signal handling
+ * stack-frames in one go after that.
+ */
+static int do_signal(struct pt_regs *regs, sigset_t *oldset)
+{
+        siginfo_t info;
+        int signr;
+        struct k_sigaction ka;
+
+        /*
+         * We want the common case to go fast, which
+         * is why we may in certain cases get here from
+         * kernel mode. Just return without doing anything
+         * if so.
+         */
+        if (!user_mode(regs))
+                return 1;
+
+        if (try_to_freeze())
+                goto no_signal;
+
+        if (test_thread_flag(TIF_RESTORE_SIGMASK))
+                oldset = &current->saved_sigmask;
+        else if (!oldset)
+                oldset = &current->blocked;
+
+        signr = get_signal_to_deliver(&info, &ka, regs, 0);
+
+        if (signr > 0) {
+                /* Whee!  Actually deliver the signal.  */
+                handle_signal(signr, &info, &ka, oldset, regs);
+
+                /*
+                 * If a signal was successfully delivered, the saved sigmask
+                 * is in its frame, and we can clear the TIF_RESTORE_SIGMASK
+                 * flag.
+                 */
+                if (test_thread_flag(TIF_RESTORE_SIGMASK))
+                        clear_thread_flag(TIF_RESTORE_SIGMASK);
+
+                tracehook_signal_handler(signr, &info, &ka, regs, 0);
+                return 1;
+        }
+
+no_signal:
+        /* Did we come from a system call? */
+        if (regs->syscall_nr >= 0) {
+                /* Restart the system call - no handlers present */
+                switch (regs->regs[REG_RET]) {
+                case -ERESTARTNOHAND:
+                case -ERESTARTSYS:
+                case -ERESTARTNOINTR:
+                        /* Decode Syscall # */
+                        regs->regs[REG_RET] = regs->syscall_nr;
+                        regs->pc -= 4;
+                        break;
+
+                case -ERESTART_RESTARTBLOCK:
+                        regs->regs[REG_RET] = __NR_restart_syscall;
+                        regs->pc -= 4;
+                        break;
+                }
+        }
+
+        /* No signal to deliver -- put the saved sigmask back */
+        if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+                clear_thread_flag(TIF_RESTORE_SIGMASK);
+                sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+        }
+
+        return 0;
+}
 
 /*
  * Atomically swap in the new signal mask, and wait for a signal.
@@ -643,14 +721,13 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
                 switch (regs->regs[REG_RET]) {
                         case -ERESTART_RESTARTBLOCK:
                         case -ERESTARTNOHAND:
+                        no_system_call_restart:
                                 regs->regs[REG_RET] = -EINTR;
                                 break;
 
                         case -ERESTARTSYS:
-                                if (!(ka->sa.sa_flags & SA_RESTART)) {
-                                        regs->regs[REG_RET] = -EINTR;
-                                        break;
-                                }
+                                if (!(ka->sa.sa_flags & SA_RESTART))
+                                        goto no_system_call_restart;
                         /* fallthrough */
                         case -ERESTARTNOINTR:
                                 /* Decode syscall # */
@@ -673,80 +750,13 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
         spin_unlock_irq(&current->sighand->siglock);
 }
 
-/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- *
- * Note that we go through the signals twice: once to check the signals that
- * the kernel can handle, and then we build all the user-level signal handling
- * stack-frames in one go after that.
- */
-int do_signal(struct pt_regs *regs, sigset_t *oldset)
+asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
 {
-        siginfo_t info;
-        int signr;
-        struct k_sigaction ka;
-
-        /*
-         * We want the common case to go fast, which
-         * is why we may in certain cases get here from
-         * kernel mode. Just return without doing anything
-         * if so.
-         */
-        if (!user_mode(regs))
-                return 1;
-
-        if (try_to_freeze())
-                goto no_signal;
-
-        if (test_thread_flag(TIF_RESTORE_SIGMASK))
-                oldset = &current->saved_sigmask;
-        else if (!oldset)
-                oldset = &current->blocked;
-
-        signr = get_signal_to_deliver(&info, &ka, regs, 0);
-
-        if (signr > 0) {
-                /* Whee!  Actually deliver the signal.  */
-                handle_signal(signr, &info, &ka, oldset, regs);
+        if (thread_info_flags & _TIF_SIGPENDING)
+                do_signal(regs, 0);
 
-                /*
-                 * If a signal was successfully delivered, the saved sigmask
-                 * is in its frame, and we can clear the TIF_RESTORE_SIGMASK
-                 * flag.
-                 */
-                if (test_thread_flag(TIF_RESTORE_SIGMASK))
-                        clear_thread_flag(TIF_RESTORE_SIGMASK);
-
-                return 1;
+        if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+                clear_thread_flag(TIF_NOTIFY_RESUME);
+                tracehook_notify_resume(regs);
         }
-
-no_signal:
-        /* Did we come from a system call? */
-        if (regs->syscall_nr >= 0) {
-                /* Restart the system call - no handlers present */
-                switch (regs->regs[REG_RET]) {
-                case -ERESTARTNOHAND:
-                case -ERESTARTSYS:
-                case -ERESTARTNOINTR:
-                        /* Decode Syscall # */
-                        regs->regs[REG_RET] = regs->syscall_nr;
-                        regs->pc -= 4;
-                        break;
-
-                case -ERESTART_RESTARTBLOCK:
-                        regs->regs[REG_RET] = __NR_restart_syscall;
-                        regs->pc -= 4;
-                        break;
-                }
-        }
-
-        /* No signal to deliver -- put the saved sigmask back */
-        if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-                clear_thread_flag(TIF_RESTORE_SIGMASK);
-                sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
-        }
-
-        return 0;
 }
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 56d0a7daa34b..9c131cac91a4 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -237,7 +237,6 @@ choice
 
 config CACHE_WRITEBACK
         bool "Write-back"
-        depends on CPU_SH2A || CPU_SH3 || CPU_SH4 || CPU_SH5
 
 config CACHE_WRITETHROUGH
         bool "Write-through"
diff --git a/arch/sh/mm/Makefile_32 b/arch/sh/mm/Makefile_32
index e295db60b91b..70e0906023cc 100644
--- a/arch/sh/mm/Makefile_32
+++ b/arch/sh/mm/Makefile_32
@@ -5,12 +5,15 @@
 obj-y                   := init.o extable_32.o consistent.o
 
 ifndef CONFIG_CACHE_OFF
-obj-$(CONFIG_CPU_SH2)           += cache-sh2.o
-obj-$(CONFIG_CPU_SH3)           += cache-sh3.o
-obj-$(CONFIG_CPU_SH4)           += cache-sh4.o
-obj-$(CONFIG_SH7705_CACHE_32KB) += cache-sh7705.o
+cache-$(CONFIG_CPU_SH2)         := cache-sh2.o
+cache-$(CONFIG_CPU_SH2A)        := cache-sh2a.o
+cache-$(CONFIG_CPU_SH3)         := cache-sh3.o
+cache-$(CONFIG_CPU_SH4)         := cache-sh4.o
+cache-$(CONFIG_SH7705_CACHE_32KB)       += cache-sh7705.o
 endif
 
+obj-y                   += $(cache-y)
+
 mmu-y                   := tlb-nommu.o pg-nommu.o
 mmu-$(CONFIG_MMU)       := fault_32.o tlbflush_32.o ioremap_32.o
 
diff --git a/arch/sh/mm/cache-sh2.c b/arch/sh/mm/cache-sh2.c
index 6614033f6be9..c4e80d2b764b 100644
--- a/arch/sh/mm/cache-sh2.c
+++ b/arch/sh/mm/cache-sh2.c
@@ -2,6 +2,7 @@
  * arch/sh/mm/cache-sh2.c
  *
  * Copyright (C) 2002 Paul Mundt
+ * Copyright (C) 2008 Yoshinori Sato
  *
  * Released under the terms of the GNU GPL v2.0.
  */
@@ -24,8 +25,15 @@ void __flush_wback_region(void *start, int size)
         end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
                 & ~(L1_CACHE_BYTES-1);
         for (v = begin; v < end; v+=L1_CACHE_BYTES) {
-                /* FIXME cache purge */
-                ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
+                unsigned long addr = CACHE_OC_ADDRESS_ARRAY | (v & 0x00000ff0);
+                int way;
+                for (way = 0; way < 4; way++) {
+                        unsigned long data =  ctrl_inl(addr | (way << 12));
+                        if ((data & CACHE_PHYSADDR_MASK) == (v & CACHE_PHYSADDR_MASK)) {
+                                data &= ~SH_CACHE_UPDATED;
+                                ctrl_outl(data, addr | (way << 12));
+                        }
+                }
         }
 }
 
@@ -37,21 +45,40 @@ void __flush_purge_region(void *start, int size)
         begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
         end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
                 & ~(L1_CACHE_BYTES-1);
-        for (v = begin; v < end; v+=L1_CACHE_BYTES) {
-                ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
-        }
+
+        for (v = begin; v < end; v+=L1_CACHE_BYTES)
+                ctrl_outl((v & CACHE_PHYSADDR_MASK),
+                          CACHE_OC_ADDRESS_ARRAY | (v & 0x00000ff0) | 0x00000008);
 }
 
 void __flush_invalidate_region(void *start, int size)
 {
+#ifdef CONFIG_CACHE_WRITEBACK
+        /*
+         * SH-2 does not support individual line invalidation, only a
+         * global invalidate.
+         */
+        unsigned long ccr;
+        unsigned long flags;
+        local_irq_save(flags);
+        jump_to_uncached();
+
+        ccr = ctrl_inl(CCR);
+        ccr |= CCR_CACHE_INVALIDATE;
+        ctrl_outl(ccr, CCR);
+
+        back_to_cached();
+        local_irq_restore(flags);
+#else
         unsigned long v;
         unsigned long begin, end;
 
         begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
         end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
                 & ~(L1_CACHE_BYTES-1);
-        for (v = begin; v < end; v+=L1_CACHE_BYTES) {
-                ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
-        }
-}
 
+        for (v = begin; v < end; v+=L1_CACHE_BYTES)
+                ctrl_outl((v & CACHE_PHYSADDR_MASK),
+                          CACHE_OC_ADDRESS_ARRAY | (v & 0x00000ff0) | 0x00000008);
+#endif
+}
diff --git a/arch/sh/mm/cache-sh2a.c b/arch/sh/mm/cache-sh2a.c
new file mode 100644
index 000000000000..62c0c5f35120
--- /dev/null
+++ b/arch/sh/mm/cache-sh2a.c
@@ -0,0 +1,129 @@
+/*
+ * arch/sh/mm/cache-sh2a.c
+ *
+ * Copyright (C) 2008 Yoshinori Sato
+ *
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <linux/init.h>
+#include <linux/mm.h>
+
+#include <asm/cache.h>
+#include <asm/addrspace.h>
+#include <asm/processor.h>
+#include <asm/cacheflush.h>
+#include <asm/io.h>
+
+void __flush_wback_region(void *start, int size)
+{
+        unsigned long v;
+        unsigned long begin, end;
+        unsigned long flags;
+
+        begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+        end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+                & ~(L1_CACHE_BYTES-1);
+
+        local_irq_save(flags);
+        jump_to_uncached();
+
+        for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+                unsigned long addr = CACHE_OC_ADDRESS_ARRAY | (v & 0x000007f0);
+                int way;
+                for (way = 0; way < 4; way++) {
+                        unsigned long data =  ctrl_inl(addr | (way << 11));
+                        if ((data & CACHE_PHYSADDR_MASK) == (v & CACHE_PHYSADDR_MASK)) {
+                                data &= ~SH_CACHE_UPDATED;
+                                ctrl_outl(data, addr | (way << 11));
+                        }
+                }
+        }
+
+        back_to_cached();
+        local_irq_restore(flags);
+}
+
+void __flush_purge_region(void *start, int size)
+{
+        unsigned long v;
+        unsigned long begin, end;
+        unsigned long flags;
+
+        begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+        end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+                & ~(L1_CACHE_BYTES-1);
+
+        local_irq_save(flags);
+        jump_to_uncached();
+
+        for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+                ctrl_outl((v & CACHE_PHYSADDR_MASK),
+                          CACHE_OC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008);
+        }
+        back_to_cached();
+        local_irq_restore(flags);
+}
+
+void __flush_invalidate_region(void *start, int size)
+{
+        unsigned long v;
+        unsigned long begin, end;
+        unsigned long flags;
+
+        begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+        end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+                & ~(L1_CACHE_BYTES-1);
+        local_irq_save(flags);
+        jump_to_uncached();
+
+#ifdef CONFIG_CACHE_WRITEBACK
+        ctrl_outl(ctrl_inl(CCR) | CCR_OCACHE_INVALIDATE, CCR);
+        /* I-cache invalidate */
+        for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+                ctrl_outl((v & CACHE_PHYSADDR_MASK),
+                          CACHE_IC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008);
+        }
+#else
+        for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+                ctrl_outl((v & CACHE_PHYSADDR_MASK),
+                          CACHE_IC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008);
+                ctrl_outl((v & CACHE_PHYSADDR_MASK),
+                          CACHE_OC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008);
+        }
+#endif
+        back_to_cached();
+        local_irq_restore(flags);
+}
+
+/* WBack O-Cache and flush I-Cache */
+void flush_icache_range(unsigned long start, unsigned long end)
+{
+        unsigned long v;
+        unsigned long flags;
+
+        start = start & ~(L1_CACHE_BYTES-1);
+        end = (end + L1_CACHE_BYTES-1) & ~(L1_CACHE_BYTES-1);
+
+        local_irq_save(flags);
+        jump_to_uncached();
+
+        for (v = start; v < end; v+=L1_CACHE_BYTES) {
+                unsigned long addr = (v & 0x000007f0);
+                int way;
+                /* O-Cache writeback */
+                for (way = 0; way < 4; way++) {
+                        unsigned long data =  ctrl_inl(CACHE_OC_ADDRESS_ARRAY | addr | (way << 11));
+                        if ((data & CACHE_PHYSADDR_MASK) == (v & CACHE_PHYSADDR_MASK)) {
+                                data &= ~SH_CACHE_UPDATED;
+                                ctrl_outl(data, CACHE_OC_ADDRESS_ARRAY | addr | (way << 11));
+                        }
+                }
+                /* I-Cache invalidate */
+                ctrl_outl(addr,
+                          CACHE_IC_ADDRESS_ARRAY | addr | 0x00000008);
+        }
+
+        back_to_cached();
+        local_irq_restore(flags);
+}
diff --git a/arch/sh/mm/tlb-sh5.c b/arch/sh/mm/tlb-sh5.c
index f34274a1ded3..dae131243bcc 100644
--- a/arch/sh/mm/tlb-sh5.c
+++ b/arch/sh/mm/tlb-sh5.c
@@ -15,9 +15,7 @@
 #include <asm/mmu_context.h>
 
 /**
- * sh64_tlb_init
- *
- * Perform initial setup for the DTLB and ITLB.
+ * sh64_tlb_init - Perform initial setup for the DTLB and ITLB.
  */
 int __init sh64_tlb_init(void)
 {
@@ -46,9 +44,7 @@ int __init sh64_tlb_init(void)
 }
 
 /**
- * sh64_next_free_dtlb_entry
- *
- * Find the next available DTLB entry
+ * sh64_next_free_dtlb_entry - Find the next available DTLB entry
  */
 unsigned long long sh64_next_free_dtlb_entry(void)
 {
@@ -56,9 +52,7 @@ unsigned long long sh64_next_free_dtlb_entry(void)
 }
 
 /**
- * sh64_get_wired_dtlb_entry
- *
- * Allocate a wired (locked-in) entry in the DTLB
+ * sh64_get_wired_dtlb_entry - Allocate a wired (locked-in) entry in the DTLB
  */
 unsigned long long sh64_get_wired_dtlb_entry(void)
 {
@@ -71,12 +65,10 @@ unsigned long long sh64_get_wired_dtlb_entry(void)
 }
 
 /**
- * sh64_put_wired_dtlb_entry
+ * sh64_put_wired_dtlb_entry - Free a wired (locked-in) entry in the DTLB.
  *
  * @entry:      Address of TLB slot.
  *
- * Free a wired (locked-in) entry in the DTLB.
- *
  * Works like a stack, last one to allocate must be first one to free.
  */
 int sh64_put_wired_dtlb_entry(unsigned long long entry)
@@ -115,7 +107,7 @@ int sh64_put_wired_dtlb_entry(unsigned long long entry)
 }
 
 /**
- * sh64_setup_tlb_slot
+ * sh64_setup_tlb_slot - Load up a translation in a wired slot.
  *
  * @config_addr:        Address of TLB slot.
  * @eaddr:              Virtual address.
@@ -154,7 +146,7 @@ inline void sh64_setup_tlb_slot(unsigned long long config_addr,
 }
 
 /**
- * sh64_teardown_tlb_slot
+ * sh64_teardown_tlb_slot - Teardown a translation.
  *
  * @config_addr:        Address of TLB slot.
  *
diff --git a/arch/sh/tools/Makefile b/arch/sh/tools/Makefile
index b5d202be8206..567516b58acc 100644
--- a/arch/sh/tools/Makefile
+++ b/arch/sh/tools/Makefile
@@ -10,7 +10,7 @@
 # Shamelessly cloned from ARM.
 #
 
-arch/sh/include/asm/machtypes.h: $(src)/gen-mach-types $(src)/mach-types
+include/asm-sh/machtypes.h: $(src)/gen-mach-types $(src)/mach-types
         @echo '  Generating $@'
-        $(Q)if [ ! -d arch/sh/include/asm ]; then mkdir -p arch/sh/include/asm; fi
+        $(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi
         $(Q)$(AWK) -f $^ > $@ || { rm -f $@; /bin/false; }