[DPDK/examples Bug 1628] Multi-process sample app requires exact memory mapping

[DPDK/examples Bug 1628] Multi-process sample app requires exact memory mapping

[bugzilla]

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https://bugs.dpdk.org/show_bug.cgi?id=1628

            Bug ID: 1628
           Summary: Multi-process sample app requires exact memory mapping
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: examples
          Assignee: dev@dpdk.org
          Reporter: nandinipersad361@gmail.com
  Target Milestone: ---

The multi-process example application assumes that it is possible to map the
hugepage memory to the same virtual addresses in client and server
applications. Occasionally, very rarely with 64-bit, this does not occur and a
client application will fail on startup. The Linux “address-space layout
randomization” security feature can sometimes cause this to occur.

Implication:
A multi-process client application fails to initialize.

Resolution/Workaround:
See the “Multi-process Limitations” section in the DPDK Programmer’s Guide for
more information.

Affected Environment/Platform:
All.

Driver/Module:
Multi-process example application

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[DPDK/examples Bug 1628] Multi-process sample app requires exact memory mapping

[bugzilla]

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https://bugs.dpdk.org/show_bug.cgi?id=1628

Stephen Hemminger (stephen@networkplumber.org) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WONTFIX
                 CC|                            |stephen@networkplumber.org
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #1 from Stephen Hemminger (stephen@networkplumber.org) ---
See documentation already describes this problem in detail, this is not a bug
but a documented limitation.

See 23.3 here:
https://doc.dpdk.org/guides-1.8/prog_guide/multi_proc_support.html

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