Re: [PATCH v4 12/24] x86/virt/seamldr: Abort updates if errors occurred midway

[Huang, Kai]

On Thu, 2026-02-12 at 06:35 -0800, Chao Gao wrote:
> The TDX Module update process has multiple steps, each of which may
> encounter failures.
> 
> The current state machine of updates proceeds to the next step regardless
> of errors. But continuing updates when errors occur midway is pointless.
> 
> Abort the update by setting a flag to indicate that a CPU has encountered
> an error, forcing all CPUs to exit the execution loop. Note that failing
> CPUs do not acknowledge the current step. This keeps all other CPUs waiting
> in the current step (since advancing to the next step requires all CPUs to
> acknowledge the current step) until they detect the fault flag and exit the
> loop.
> 
> Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>
> Reviewed-by: Xu Yilun <yilun.xu@xxxxxxxxxxxxxxx>
> Reviewed-by: Tony Lindgren <tony.lindgren@xxxxxxxxxxxxxxx>
> 

Reviewed-by: Kai Huang <kai.huang@xxxxxxxxx>