linux-kernel - Re: [PATCH v3] selftests: livepatch: Test atomic replace against multiple modules

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Date: Tue, 4 Jun 2024 14:10:40 -0400
From: Joe Lawrence <joe.lawrence@...hat.com>
To: Marcos Paulo de Souza <mpdesouza@...e.com>
Cc: Josh Poimboeuf <jpoimboe@...nel.org>, Jiri Kosina <jikos@...nel.org>,
	Miroslav Benes <mbenes@...e.cz>, Petr Mladek <pmladek@...e.com>,
	Shuah Khan <shuah@...nel.org>, live-patching@...r.kernel.org,
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] selftests: livepatch: Test atomic replace against
 multiple modules

On Mon, Jun 03, 2024 at 02:26:19PM -0300, Marcos Paulo de Souza wrote:
> Adapt the current test-livepatch.sh script to account the number of
> applied livepatches and ensure that an atomic replace livepatch disables
> all previously applied livepatches.
> 
> Signed-off-by: Marcos Paulo de Souza <mpdesouza@...e.com>
> ---
> Changes since v2:
> * Used variables to stop the name of other livepatches applied to test
>   the atomic replace. (Joe)
> 
> Changes since v1:
> * Added checks in the existing test-livepatch.sh instead of creating a
>   new test file. (Joe)
> * Fixed issues reported by ShellCheck (Joe)
> ---
> Changes in v3:
> - EDITME: describe what is new in this series revision.
> - EDITME: use bulletpoints and terse descriptions.
> - Link to v2: https://lore.kernel.org/r/20240525-lp-atomic-replace-v2-1-142199bb65a1@suse.com
> ---
>  .../testing/selftests/livepatch/test-livepatch.sh  | 138 +++++++++++++--------
>  1 file changed, 89 insertions(+), 49 deletions(-)
> 
> diff --git a/tools/testing/selftests/livepatch/test-livepatch.sh b/tools/testing/selftests/livepatch/test-livepatch.sh
> index e3455a6b1158..ca770b8c62fc 100755
> --- a/tools/testing/selftests/livepatch/test-livepatch.sh
> +++ b/tools/testing/selftests/livepatch/test-livepatch.sh
>  
> [ ... snip ... ]
>  
>  # - load a livepatch that modifies the output from /proc/cmdline and
>  #   verify correct behavior
> -# - load an atomic replace livepatch and verify that only the second is active
> -# - remove the first livepatch and verify that the atomic replace livepatch
> -#   is still active
> +# - load two addtional livepatches and check the number of livepatch modules

nit: s/addtional/additional as Miroslav spotted in v2

Otherwise LGTM,

Acked-by: Joe Lawrence <joe.lawrence@...hat.com>

--
Joe