** Also affects: linux-gcp (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux-gcp (Ubuntu Oracular)
Importance: Undecided
Status: New
** Also affects: linux-gcp (Ubuntu Plucky)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2112602
Title:
Fix HLT logic execution for TDX VMs
Status in linux-gcp package in Ubuntu:
New
Status in linux-gcp source package in Noble:
New
Status in linux-gcp source package in Oracular:
New
Status in linux-gcp source package in Plucky:
New
Bug description:
SRU Justification
[Impact]
Google has requested a backport of the following patchset:
https://lore.kernel.org/all/20250228014416.3925664-1-vannapu...@google.com/
Targets include 6.8 onwards.
[Fix]
Backport the three patches in that patchset, as needed, to noble:linux-gcp,
oracular:linux-gcp, and plucky:linux-gcp.
[Test plan]
Compile and boot test. Verification on Google's side is optional as this is a
fairly isolated backport.
[Where problems could occur]
This fix affects TDX guest VMs which call the HLT instruction. An issue with
this fix would be visible to the user as unexpected #VEs (virtualization
exceptions) or unexpected interrupt behavior in their TDX guest VM.
[Other]
SF #00412211
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