linux-kernel - Re: [PATCH v3] selftests/livepatch: introduce tests

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Message-ID: <20180416124947.4ehk7xbxoiqrklue@pathway.suse.cz>
Date:   Mon, 16 Apr 2018 14:49:47 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     Joe Lawrence <joe.lawrence@...hat.com>
Cc:     live-patching@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jiri Kosina <jikos@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Miroslav Benes <mbenes@...e.cz>,
        Libor Pecháček <lpechacek@...e.com>,
        Nicolai Stange <nstange@...e.de>,
        Artem Savkov <asavkov@...hat.com>
Subject: Re: [PATCH v3] selftests/livepatch: introduce tests

On Thu 2018-04-12 10:54:31, Joe Lawrence wrote:
> Add a few livepatch modules and simple target modules that the included
> regression suite can run tests against.
> 
> 
> diff --git a/Documentation/livepatch/callbacks.txt b/Documentation/livepatch/callbacks.txt
> index c9776f48e458..6ca2801a6bb9 100644
> --- a/Documentation/livepatch/callbacks.txt
> +++ b/Documentation/livepatch/callbacks.txt
> @@ -116,490 +116,3 @@ virtnet_probe() initialized its driver's net_device features.  A

It might make sense to add a note about sample modules in
lib/livepatch/


> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> index 64155e310a9f..e4a0e81542ff 100644
> --- a/lib/Kconfig.debug
> +++ b/lib/Kconfig.debug
> @@ -1932,6 +1932,18 @@ config TEST_DEBUG_VIRTUAL
>  
>  	  If unsure, say N.
>  
> +config TEST_LIVEPATCH
> +	tristate "Test livepatching"
> +	default n
> +	depends on LIVEPATCH
> +	depends on m
> +	help
> +	  Test various kernel livepatching features for correctness.
> +	  The tests will load test modules that will be livepatched
> +	  in various scenarios.

It would be great to make a clue how to run the test. Something like:

	  To run tests call:

	  tools/testing/selftests/livepatch/test-callbacks.sh
	  tools/testing/selftests/livepatch/test-livepatch.sh
	  tools/selftests/livepatch/test-shadow-vars.sh

This is inspired by config TEST_KMOD description.


> +	  If unsure, say N.
> +
>  endif # RUNTIME_TESTING_MENU
>  
>  config MEMTEST
> diff --git a/lib/Makefile b/lib/Makefile
> index a90d4fcd748f..98a38441afb0 100644

Otherwise, it looks great to me. Thanks a lot for getting this
together.

Best Regards,
Petr