linux-kernel - Re: [PATCH v1 2/2] selftests/rseq: Fix mm

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Message-ID: <01153485-ea70-47f7-ab6b-2c17496ab8ff@linuxfoundation.org>
Date: Fri, 4 Oct 2024 13:18:04 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>
Cc: linux-kernel@...r.kernel.org, "Paul E. McKenney" <paulmck@...nel.org>,
 Boqun Feng <boqun.feng@...il.com>, Valentin Schneider <vschneid@...hat.com>,
 Mel Gorman <mgorman@...e.de>, Steven Rostedt <rostedt@...dmis.org>,
 Vincent Guittot <vincent.guittot@...aro.org>,
 Dietmar Eggemann <dietmar.eggemann@....com>, Ben Segall
 <bsegall@...gle.com>, Yury Norov <yury.norov@...il.com>,
 Rasmus Villemoes <linux@...musvillemoes.dk>,
 "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
 Carlos O'Donell <carlos@...hat.com>, Florian Weimer <fweimer@...hat.com>,
 Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v1 2/2] selftests/rseq: Fix mm_cid test failure

On 10/3/24 18:44, Mathieu Desnoyers wrote:
> Adapt the rseq.c/rseq.h code to follow GNU C library changes introduced by:
> 
> commit 2e456ccf0c34 ("Linux: Make __rseq_size useful for feature detection (bug 31965)")
> 
> Without this fix, rseq selftests for mm_cid fail:
> 
> ./run_param_test.sh
> Default parameters
> Running test spinlock
> Running compare-twice test spinlock
> Running mm_cid test spinlock
> Error: cpu id getter unavailable
> 
> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> CC: Boqun Feng <boqun.feng@...il.com>
> CC: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
> Cc: Shuah Khan <skhan@...uxfoundation.org>
> CC: Carlos O'Donell <carlos@...hat.com>
> CC: Florian Weimer <fweimer@...hat.com>
> ---
>   tools/testing/selftests/rseq/rseq.c | 109 +++++++++++++++++++---------
>   tools/testing/selftests/rseq/rseq.h |  10 +--
>   2 files changed, 76 insertions(+), 43 deletions(-)
> 

Looks good to me.

Acked-by: Shuah Khan <skhan@...uxfoundation.org>

Peter, Ingo - let me know if you plan to take this through
one of your trees. Otherwise I will pick it up.

thanks,
-- Shuah