Ubuntu
qemu package

  1. Bug #1782209
  2. Comment #0

Comment 0 for bug 1782209

Revision history for this message
Paul Lai (pclai) wrote :

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