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and then change the status of the bug to 'Confirmed'.
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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu Bionic)
Status: New => Incomplete
** Changed in: linux (Ubuntu Focal)
Status: New => Incomplete
** Changed in: linux (Ubuntu Jammy)
Status: New => Incomplete
** Changed in: linux (Ubuntu Kinetic)
Status: New => Incomplete
** Changed in: linux (Ubuntu Lunar)
Status: New => Incomplete
** Changed in: linux (Ubuntu Trusty)
Status: New => Incomplete
** Changed in: linux (Ubuntu Xenial)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2023220
Title:
Some INVLPG implementations can leave Global translations unflushed
when PCIDs are enabled
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Trusty:
Incomplete
Status in linux source package in Xenial:
Incomplete
Status in linux source package in Bionic:
Incomplete
Status in linux source package in Focal:
Incomplete
Status in linux source package in Jammy:
Incomplete
Status in linux source package in Kinetic:
In Progress
Status in linux source package in Lunar:
In Progress
Status in linux source package in Mantic:
Fix Released
Bug description:
[Impact]
When PCIDs are enabled on Alder Lake and Raptor Lake, INVLPG will not flush
the global TLB entries. This can lead to info leak or undefined behavior.
[Mitigation]
Boot with nopcid on affected systems.
[Test case]
There is no particular test case.
[Potential regressions]
This affects performance on the affected systems. TLB behavior could also be
affected.
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