Public bug reported:
This is a public version of: https://bugs.launchpad.net/bugs/2055741
[ Impact ]
Machine check SMIs (MSMI) signaled during SEAM operation (typically
inside TDX guests), on a system with Intel eMCA enabled, might
eventually be reported to the kernel #MC handler with the saved RIP on
the stack pointing to the instruction in kernel code after the SEAMCALL
instruction that entered the SEAM operation. Linux currently says that
is a fatal error and shuts down.
[ Fix ]
Clean cherry pick of:
7911f145de5f x86/mce: Implement recovery for errors in TDX/SEAM non-root mode
Which was merged in v6.10
[ Test Plan ]
Compiled
[ Where problems could occur ]
Regression in TDX management.
** Affects: linux-intel (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-intel (Ubuntu Noble)
Importance: Undecided
Assignee: Thibf (thibf)
Status: In Progress
** Also affects: linux-intel (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: linux-intel (Ubuntu Noble)
Status: New => In Progress
** Changed in: linux-intel (Ubuntu Noble)
Assignee: (unassigned) => Thibf (thibf)
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https://bugs.launchpad.net/bugs/2080352
Title:
[SRU]TDX: Fix Host panic when poison consumed in TDX SEAM non-root
mode with eMCA enabled
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