Hi,
I have not seen the kernel changes in 5.2 RCs - is there an update on their 
progress?
Also any updates, links, commits on the related qemu contribution?

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https://bugs.launchpad.net/bugs/1782209

Title:
  KVM SnowRidge Split-lock disable

Status in linux package in Ubuntu:
  Incomplete
Status in qemu package in Ubuntu:
  New

Bug description:
  When bit 29 is set in Test Control MSR register 0x33, a #AC execption
   is generated for split locked accesses at all CPL irrespective of
   CR0.AM or EFLAGS.AC.

  This feature can help developers to capture memory accesses that
  across cachelines with #LOCK assertion. Then developers can
  reconstruct their program accordingly

  Upstream target linux 5.2
  Target Release: 19.10

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