[GIT PULL] x86: unify sys_iopl

[Jeremy Fitzhardinge]

Hi Ingo,

The x86-64 implementation of iopl was buggy because it never ended up calling
set_iopl_mask().  This had no effect on native sys_iopl (because set_iopl_mask
is normally no-op on 64-bit), but it ended up never calling the pvop, which caused
iopl to have no effect on 64-bit Xen guests.

The two functions are needlessly different anyway.  This patch just unifies them
into a single function which is mostly derived from the 32-bit version.

Thanks,
	J

The following changes since commit c44c9ec0f38b939b3200436e3aa95c1aa83c41c7:
  Jeremy Fitzhardinge (1):
        x86: split NX setup into separate file to limit unstack-protected code

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git bugfix

Jeremy Fitzhardinge (1):
      x86: unify sys_iopl

 arch/x86/include/asm/syscalls.h |    8 +++-----
 arch/x86/kernel/ioport.c        |   11 ++---------
 2 files changed, 5 insertions(+), 14 deletions(-)