Merge branch 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 MPX support from Thomas Gleixner:
 "This enables support for x86 MPX.

  MPX is a new debug feature for bound checking in user space.  It
  requires kernel support to handle the bound tables and decode the
  bound violating instruction in the trap handler"

* 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  asm-generic: Remove asm-generic arch_bprm_mm_init()
  mm: Make arch_unmap()/bprm_mm_init() available to all architectures
  x86: Cleanly separate use of asm-generic/mm_hooks.h
  x86 mpx: Change return type of get_reg_offset()
  fs: Do not include mpx.h in exec.c
  x86, mpx: Add documentation on Intel MPX
  x86, mpx: Cleanup unused bound tables
  x86, mpx: On-demand kernel allocation of bounds tables
  x86, mpx: Decode MPX instruction to get bound violation information
  x86, mpx: Add MPX-specific mmap interface
  x86, mpx: Introduce VM_MPX to indicate that a VMA is MPX specific
  x86, mpx: Add MPX to disabled features
  ia64: Sync struct siginfo with general version
  mips: Sync struct siginfo with general version
  mpx: Extend siginfo structure to include bound violation information
  x86, mpx: Rename cfg_reg_u and status_reg
  x86: mpx: Give bndX registers actual names
  x86: Remove arbitrary instruction size limit in instruction decoder

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/ia64/include/uapi/asm/siginfo.h b/arch/ia64/include/uapi/asm/siginfo.h
index 4ea6225196bb..bce9bc1a66c4 100644
--- a/arch/ia64/include/uapi/asm/siginfo.h
+++ b/arch/ia64/include/uapi/asm/siginfo.h
@@ -63,6 +63,10 @@ typedef struct siginfo {
                         unsigned int _flags;    /* see below */
                         unsigned long _isr;     /* isr */
                         short _addr_lsb;        /* lsb of faulting address */
+                        struct {
+                                void __user *_lower;
+                                void __user *_upper;
+                        } _addr_bnd;
                 } _sigfault;
 
                 /* SIGPOLL */
@@ -110,9 +114,9 @@ typedef struct siginfo {
 /*
  * SIGSEGV si_codes
  */
-#define __SEGV_PSTKOVF  (__SI_FAULT|3)  /* paragraph stack overflow */
+#define __SEGV_PSTKOVF  (__SI_FAULT|4)  /* paragraph stack overflow */
 #undef NSIGSEGV
-#define NSIGSEGV        3
+#define NSIGSEGV        4
 
 #undef NSIGTRAP
 #define NSIGTRAP        4