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

Pull x86 fixes from Ingo Molnar:
 "Misc fixes:

   - revert a /dev/mem restriction change that crashes with certain boot
     parameters

   - an AMD erratum fix for cases where the BIOS doesn't apply it

   - fix unwinder debuginfo

   - improve ORC unwinder warning printouts"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "x86/mm: Limit mmap() of /dev/mem to valid physical addresses"
  x86/unwind: Show function name+offset in ORC error messages
  x86/entry: Fix idtentry unwind hint
  x86/cpu/AMD: Apply the Erratum 688 fix when the BIOS doesn't