** Changed in: xen (Ubuntu)
Status: New => Fix Released
** Changed in: intel
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1611210
Title:
[Feature] RDTSC scaling enabling
Status in intel:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in xen package in Ubuntu:
Fix Released
Bug description:
RDTSC scaling is a new virtualization feature that applies a scaling
function to the result of the RDTSC and RDTSCP instructions. The
purpose of doing so is to avoid the need to VMexit on these
instructions in order to maintain the appearance of a consistent TSC
rate while in a VM, even though the underlying hardware is counting at
a differing TSC rate.
HW: Purley
Upstream status:
KVM: 4.4 kernel
Xen: 4.7
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