4.15 is now available in Bionic.  Marking this Fix Released.

** Tags added: kernel

** Changed in: linux (Ubuntu Bionic)
       Status: New => Fix Released

** Changed in: intel
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1730792

Title:
  [Feature][SKL] Support disabling AVX-512

Status in intel:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Released

Bug description:
  Description:

  On Skylake server we have some problems with AVX512/AVX2 lowering frequency 
and potentially lowering performance.
  To do easy debug and as a potential solution it is useful to be able to 
disable AVX512 and AVX2
  I posted patches to disable AVX512/2 at the kernel level.
  Once they are merged we should back port them ASAP to server oriented 
distros, so that any issues on SKX deployment can be addressed.
  Current patches are here
  https://patchwork.kernel.org/patch/9618881/
  https://patchwork.kernel.org/patch/9618883/
  Note for backporting: the FPU code has been recently re-organized. So some of 
the patches likely need to be moved to other files and potentially other 
functions. But it's straight forward, so shouldn't be too difficult.

  Commit Ids:

  0b00de857a648dafe7020878c7a27cf776f5edf4
  0c2a3913d6f50503f7c59d83a6219e39508cc898
  57b8b1a1856adaa849d02d547411a553a531022b
  73e3a7d2a7c3be29a5a22b85026f6cfa5664267f
  cbe96375025e14fc76f9ed42ee5225120d7210f8
  ccb18db2ab9d923df07e7495123fe5fb02329713 

  
  Target Kernel: 4.14

  Target Release: 18.04

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