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[Bug 1117548] Re: perf: Add support for hardware breakpoint address masks


Hi Kim,

It seems the maintainer had a few concerns that need to be addressed,
probably in a v3 of this patchset. Is Jacob planning on doing a v3?

** Changed in: amd
       Status: In Progress => Incomplete

** Information type changed from Proprietary to Private

** Information type changed from Private to Public

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

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  perf: Add support for hardware breakpoint address masks

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

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:


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