Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

Pull big execve/kernel_thread/fork unification series from Al Viro:
 "All architectures are converted to new model.  Quite a bit of that
  stuff is actually shared with architecture trees; in such cases it's
  literally shared branch pulled by both, not a cherry-pick.

  A lot of ugliness and black magic is gone (-3KLoC total in this one):

   - kernel_thread()/kernel_execve()/sys_execve() redesign.

     We don't do syscalls from kernel anymore for either kernel_thread()
     or kernel_execve():

     kernel_thread() is essentially clone(2) with callback run before we
     return to userland, the callbacks either never return or do
     successful do_execve() before returning.

     kernel_execve() is a wrapper for do_execve() - it doesn't need to
     do transition to user mode anymore.

     As a result kernel_thread() and kernel_execve() are
     arch-independent now - they live in kernel/fork.c and fs/exec.c
     resp.  sys_execve() is also in fs/exec.c and it's completely
     architecture-independent.

   - daemonize() is gone, along with its parts in fs/*.c

   - struct pt_regs * is no longer passed to do_fork/copy_process/
     copy_thread/do_execve/search_binary_handler/->load_binary/do_coredump.

   - sys_fork()/sys_vfork()/sys_clone() unified; some architectures
     still need wrappers (ones with callee-saved registers not saved in
     pt_regs on syscall entry), but the main part of those suckers is in
     kernel/fork.c now."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (113 commits)
  do_coredump(): get rid of pt_regs argument
  print_fatal_signal(): get rid of pt_regs argument
  ptrace_signal(): get rid of unused arguments
  get rid of ptrace_signal_deliver() arguments
  new helper: signal_pt_regs()
  unify default ptrace_signal_deliver
  flagday: kill pt_regs argument of do_fork()
  death to idle_regs()
  don't pass regs to copy_process()
  flagday: don't pass regs to copy_thread()
  bfin: switch to generic vfork, get rid of pointless wrappers
  xtensa: switch to generic clone()
  openrisc: switch to use of generic fork and clone
  unicore32: switch to generic clone(2)
  score: switch to generic fork/vfork/clone
  c6x: sanitize copy_thread(), get rid of clone(2) wrapper, switch to generic clone()
  take sys_fork/sys_vfork/sys_clone prototypes to linux/syscalls.h
  mn10300: switch to generic fork/vfork/clone
  h8300: switch to generic fork/vfork/clone
  tile: switch to generic clone()
  ...

Conflicts:
	arch/microblaze/include/asm/Kbuild

diff --cc arch/Kconfig
Simple merge

diff --cc arch/arm/Kconfig
Simple merge

diff --cc arch/arm/kernel/entry-common.S
Simple merge

diff --cc arch/arm/kernel/process.c
Simple merge

diff --cc arch/arm64/Kconfig
Simple merge

diff --cc arch/arm64/include/asm/unistd32.h
Simple merge

diff --cc arch/avr32/Kconfig
Simple merge

diff --cc arch/c6x/kernel/entry.S
index 0ed6157dd256a81aeefc9e8de971f834f313a11d,1037b98953ca437009770e193ed34bcace91c737..5239057de4c4cdb4363b328a9ce820c2afd0f81e
--- 1/arch/c6x/kernel/entry.S
--- 2/arch/c6x/kernel/entry.S
+++ b/arch/c6x/kernel/entry.S
@@@ -415,21 -413,12 +415,11 @@@ ENTRY(ret_from_kernel_thread
  0:
        B       .S2     B10                /* call fn */
        LDW     .D2T1   *+SP(REGS_A1+8),A4 /* get arg */
-       MVKL    .S2     sys_exit,B11
-       MVKH    .S2     sys_exit,B11
-       ADDKPC  .S2     0f,B3,1
- 0:
-       BNOP    .S2     B11,5   /* jump to sys_exit */
+       ADDKPC  .S2     ret_from_fork_2,B3,3
  ENDPROC(ret_from_kernel_thread)
  
- ENTRY(ret_from_kernel_execve)
-       GET_THREAD_INFO A12
-       BNOP    .S2     syscall_exit,4
-       ADD     .D2X    A4,-8,SP
- ENDPROC(ret_from_kernel_execve)
- 
        ;;
 -      ;; These are the interrupt handlers, responsible for calling __do_IRQ()
 -      ;; int6 is used for syscalls (see _system_call entry)
 +      ;; These are the interrupt handlers, responsible for calling c6x_do_IRQ()
        ;;
        .macro SAVE_ALL_INT
        SAVE_ALL IRP,ITSR

diff --cc arch/microblaze/include/asm/Kbuild
index 2957fcc71764513e6c083a1f656efef1036a9678,88a758a679227ccd237aad7e35818361dc59b701..eb3a46c096fe57baf3075dfda129dd75187d4e43
--- 1/arch/microblaze/include/asm/Kbuild
--- 2/arch/microblaze/include/asm/Kbuild
+++ b/arch/microblaze/include/asm/Kbuild
@@@ -3,4 -3,4 +3,5 @@@ include include/asm-generic/Kbuild.as
  header-y  += elf.h
  generic-y += clkdev.h
  generic-y += exec.h
 +generic-y += trace_clock.h
+ generic-y += syscalls.h

diff --cc arch/mips/kernel/entry.S
Simple merge

diff --cc arch/mips/kernel/scall64-n32.S
Simple merge

diff --cc arch/parisc/kernel/syscall_table.S
Simple merge

diff --cc arch/sparc/kernel/sys_sparc_32.c
Simple merge

diff --cc arch/sparc/kernel/sys_sparc_64.c
Simple merge

diff --cc arch/sparc/kernel/syscalls.S
index bf2347794e3323c3220c92e4a96849d8c89d5fbf,2ef41e67f0bef3e4ffce7e5bd7d4f6426ebeb765..e0fed7711a940b6ec991ad11da63d0356556b5cd
--- 1/arch/sparc/kernel/syscalls.S
--- 2/arch/sparc/kernel/syscalls.S
+++ b/arch/sparc/kernel/syscalls.S
@@@ -112,20 -108,17 +108,25 @@@ sys_clone
  ret_from_syscall:
        /* Clear current_thread_info()->new_child. */
        stb     %g0, [%g6 + TI_NEW_CHILD]
-       ldx     [%g6 + TI_FLAGS], %l0
        call    schedule_tail
         mov    %g7, %o0
+       ldx     [%sp + PTREGS_OFF + PT_V9_I0], %o0
+       brnz,pt %o0, ret_sys_call
+        ldx    [%g6 + TI_FLAGS], %l0
+       ldx     [%sp + PTREGS_OFF + PT_V9_G1], %l1
+       call    %l1
+        ldx    [%sp + PTREGS_OFF + PT_V9_G2], %o0
        ba,pt   %xcc, ret_sys_call
-        ldx    [%sp + PTREGS_OFF + PT_V9_I0], %o0
+        mov    0, %o0
  
 +      .globl  sparc_exit_group
 +      .type   sparc_exit_group,#function
 +sparc_exit_group:
 +      sethi   %hi(sys_exit_group), %g7
 +      ba,pt   %xcc, 1f
 +       or     %g7, %lo(sys_exit_group), %g7
 +      .size   sparc_exit_group,.-sparc_exit_group
 +
        .globl  sparc_exit
        .type   sparc_exit,#function
  sparc_exit:

diff --cc arch/sparc/kernel/systbls_64.S
Simple merge

diff --cc arch/x86/Kconfig
Simple merge

diff --cc arch/x86/include/asm/processor.h
Simple merge

diff --cc arch/x86/kernel/cpu/common.c
Simple merge

diff --cc arch/x86/kernel/entry_64.S
Simple merge

diff --cc arch/x86/kernel/process.c
Simple merge

diff --cc arch/x86/um/Kconfig
Simple merge

diff --cc drivers/staging/gdm72xx/gdm_usb.c
Simple merge

diff --cc fs/file.c
Simple merge

diff --cc include/linux/sched.h
Simple merge

diff --cc kernel/auditsc.c
Simple merge

diff --cc kernel/exit.c
Simple merge

diff --cc kernel/fork.c
Simple merge

diff --cc kernel/signal.c
Simple merge