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[Bug 1744173] Re: artful: rfi-flush: Switch to new linear fallback flush

 

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

** Changed in: linux (Ubuntu Artful)
       Status: New => Triaged

** Changed in: linux (Ubuntu Artful)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Artful)
     Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)

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https://bugs.launchpad.net/bugs/1744173

Title:
  artful: rfi-flush: Switch to new linear fallback flush

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged
Status in linux source package in Artful:
  Triaged

Bug description:
  Change flush from congruence-first with dependencies to linear with
  no dependencies, which increases flush performance by 8x on P8, and
  3x on P9 (as measured with null syscall loop, which will have the
  flush area in the L2).

  The flush also becomes simpler and more adaptable to different cache
  geometries.

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