[git pull] kgdb 2.6.27-rc7 fixes

[Jason Wessel <jason.wessel@windriver.com>]

Linus, please pull the kgdb git tree fixes for 2.6.27-rc7

  git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb.git for_linus

Summary: 

Several regressions have been fixed for which there was no automated test.
 - Fix regression in flushing data/instruction cache on boundaries
 - User space single stepping should be ignored by kgdb
 - x86_64 had the BX and DX registers reversed in gdb
 - x86_64 eflags, CS, SS, registers were not properly passed to gdb
 - tty_io.c has one function repaired which is only used kgdboc
   to hook up to the tty system.  The input args were not properly
   checked.  Test case was:
     "echo ffff0 > /sys/module/kgdboc/parameters/kgdboc"
   

Short log follows:

--- 

Atsuo Igarashi (1):
      kgdb: could not write to the last of valid memory with kgdb

Jason Wessel (4):
      kgdb, x86, arm, mips, powerpc: ignore user space single stepping
      kgdb, x86_64: gdb serial has BX and DX reversed
      kgdb, x86_64: fix PS CS SS registers in gdb serial
      kgdboc,tty: Fix tty polling search to use name correctly

 arch/arm/kernel/kgdb.c     |    2 --
 arch/mips/kernel/kgdb.c    |    3 +--
 arch/powerpc/kernel/kgdb.c |    5 ++---
 arch/x86/kernel/kgdb.c     |   43 ++++++++++++++++++++++++++++++++-----------
 drivers/char/tty_io.c      |   14 ++++++++++++--
 include/asm-x86/kgdb.h     |   24 +++++++++++-------------
 kernel/kgdb.c              |   10 +++++-----
 7 files changed, 63 insertions(+), 38 deletions(-)