Re: [PATCH v3 26/26] coco/tdx-host: Set and document TDX Module update expectations

[Tony Lindgren]

On Fri, Jan 23, 2026 at 06:55:34AM -0800, Chao Gao wrote:
> In rare cases, TDX Module updates may cause TD management operations to
> fail if they occur during phases of the TD lifecycle that are sensitive
> to update compatibility.
> 
> But not all combinations of P-SEAMLDR, kernel, and TDX Module have the
> capability to detect and prevent said incompatibilities. Completely
> disabling TDX Module updates on platforms without the capability would
> be overkill, as these incompatibility cases are rare and can be
> addressed by userspace through coordinated scheduling of updates and TD
> management operations.
> 
> To set clear expectations for TDX Module updates, expose the capability
> to detect and prevent these incompatibility cases via sysfs and
> document the compatibility criteria and indications when those criteria
> are violated.

Reviewed-by: Tony Lindgren <tony.lindgren@xxxxxxxxxxxxxxx>