** Description changed:
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
** Changed in: linux (Ubuntu)
Importance: Undecided => Wishlist
** Changed in: qemu (Ubuntu)
Importance: Undecided => Wishlist
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https://bugs.launchpad.net/bugs/1782209
Related QEMU patch can be found at:
https://lists.gnu.org/archive/html/qemu-devel/2019-03/msg00507.html
and related kvm-unit-test can be found at:
https://patchwork.kernel.org/patch/10837677/
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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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** Description changed:
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
My questions in comment #1 where no answered directly yet, but this
still is using only kernel patches so far, I think it is time to add at
least a kernel task.
Furthermore it isn't upstream yet and the target being 5.2 is a bit out
still, so I'd think you should target 19.10
** Also affects:
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