Public bug reported:
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 4.20
** Affects: kvm (Ubuntu)
Importance: Undecided
Status: New
** Tags: intel
** Package changed: xen (Ubuntu) => kvm (Ubuntu)
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https://bugs.launchpad.net/bugs/1782209
Title:
KVM SnowRidge Split-lock disable
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