Confirmed with Kim that Jacob is still working on this and is planning
on resubmitting.

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https://bugs.launchpad.net/bugs/1117548

Title:
  perf: Add support for hardware breakpoint address masks

Status in amd:
  Incomplete
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  The following patchset adds address masks to existing perf hardware
  breakpoint mechanism to allow trapping on an address range (currently
  only single address) on supported architectures.

  perf uapi is updated, x86 AMD implementation (for AMD Family 16h and
  beyond) is provided, and perf tool has been extended to do:

    $ perf stat -e mem:0x1000:w:0xf a.out
                                ^^^
                                "don't care" bit mask

    which will count writes to [0x1000 ~ 0x1010)

  
  This patch is upstream but not accepted yet:

  https://lkml.org/lkml/2012/12/12/261

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