Re: [PATCH 1/3] livepatch: Convert error about unsupported reliable stacktrace into a warning

[Miroslav Benes]

On Wed, 24 Apr 2019, Petr Mladek wrote:

> The commit d0807da78e11d46f ("livepatch: Remove immediate feature") caused
> that any livepatch was refused when reliable stacktraces were not supported
> on the given architecture.
> 
> The limitation is too strong. User space processes are safely migrated
> even when entering or leaving the kernel. Kthreads transition would
> need to get forced. But it is safe when:
> 
>    + The livepatch does not change the semantic of the code.
>    + Callbacks do not depend on a safely finished transition.
> 
> Suggested-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
> Signed-off-by: Petr Mladek <pmladek@xxxxxxxx>

Acked-by: Miroslav Benes <mbenes@xxxxxxx>

Miroslav