** Also affects: linux-gke (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: linux-gke (Ubuntu Oracular)
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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-gke package in Ubuntu:
New
Status in linux-gcp source package in Noble:
Fix Released
Status in linux-gke source package in Noble:
New
Status in linux-gcp source package in Oracular:
Fix Released
Bug description:
SRU Justification
[Impact]
Google has requested a backport of the following commits:
22cc5ca5de52 ("x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT")
9f98a4f4e721 ("x86/tdx: Fix arch_safe_halt() execution for TDX VMs")
Targets include 6.8 onwards.
[Fix]
Backport the patches as needed to noble:linux-gcp and later kernels.
[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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