Ryan Finnie wrote:
> sysdep-i386/skas_ptrace.h and sysdep-x86_64/skas_ptrace.h are nearly
> identical, so I can't figure out why ptrace_faultinfo and ptrace_ldt are
> being defined in the first place.

Looks like they were added to include/asm-um/ptrace-x86_64.h to solve a
disparity in x86_64 that the x86 merge fixed.  Removing them let
skas_ptrace.h define them, as in i386.

So here we go, attached is an updated version.  I also changed
CONFIG_PROC_MM_BROWSABLE to depend on CONFIG_PROC_MM.  Again, the i386
host and guest build and test properly, but I have only tested building
x86_64 host and guest using defconfig.  They build correctly, but I
haven't test booted them.  (I have x86_64 hardware, but don't have a
guest userland handy to test with.)  Please give it a spin and let me
know how it works.

Oh, and let me remind the world: I am not really a C programmer, let
alone a kernel programmer.  It's quite possible this patch will eat your
dog.  Hopefully someone like Jeff can chime in Monday and let me know
that I did a horrible job porting the patch.

RF

 arch/um/sys-i386/ldt.c           |    2
 arch/x86/Kconfig                 |   21 ++
 arch/x86/ia32/ptrace32.c         |   68 +++++++
 arch/x86/ia32/sys_ia32.c         |   16 +
 arch/x86/kernel/ldt_32.c         |   58 +++---
 arch/x86/kernel/ldt_64.c         |   55 +++--
 arch/x86/kernel/ptrace_32.c      |   61 ++++++
 arch/x86/kernel/ptrace_64.c      |   70 +++++++
 arch/x86/kernel/sys_i386_32.c    |   27 ++
 arch/x86/kernel/sys_x86_64.c     |   15 +
 arch/x86/mm/Makefile_64          |    1
 arch/x86/mm/proc_mm_64.c         |   85 ++++++++
 include/asm-um/compat.h          |    9
 include/asm-um/proc_mm_32.h      |    1
 include/asm-um/proc_mm_64.h      |    1
 include/asm-um/ptrace-x86_64.h   |    1
 include/asm-x86/desc_32.h        |    3
 include/asm-x86/desc_64.h        |    3
 include/asm-x86/mmu_context_32.h |   19 +
 include/asm-x86/mmu_context_64.h |   20 +-
 include/asm-x86/proc_mm_32.h     |   18 +
 include/asm-x86/proc_mm_64.h     |   58 ++++++
 include/asm-x86/ptrace-abi.h     |    6
 include/asm-x86/ptrace.h         |   65 ++++++
 include/linux/mm.h               |   19 +
 include/linux/proc_mm.h          |  110 +++++++++++
 mm/Makefile                      |    5
 mm/fremap.c                      |    5
 mm/mmap.c                        |   17 -
 mm/mprotect.c                    |   20 +-
 mm/proc_mm-mod.c                 |   50 +++++
 mm/proc_mm.c                     |  299 +++++++++++++++++++++++++++++++
 32 files changed, 1124 insertions(+), 84 deletions(-)