From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: Shuah Khan <skhan@linuxfoundation.org>, Shuah Khan <shuah@kernel.org>
Cc: linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>
Subject: Re: [PATCH] selftests/rseq: Do not skip !allowed_cpus for mm_cid
Date: Mon, 22 Jan 2024 13:55:48 -0500 [thread overview]
Message-ID: <e33279b2-be4d-4706-8faf-9cf5e8c8e092@efficios.com> (raw)
In-Reply-To: <40935ea7-9da6-455d-8df3-94e7e0fc6fa4@linuxfoundation.org>
On 2024-01-22 13:43, Shuah Khan wrote:
> On 1/11/24 08:49, Mathieu Desnoyers wrote:
>> Indexing with mm_cid is incompatible with skipping disallowed cpumask,
>> because concurrency IDs are based on a virtual ID allocation which is
>> unrelated to the physical CPU mask.
>>
>> These issues can be reproduced by running the rseq selftests under a
>> taskset which excludes CPU 0, e.g.
>>
>> taskset -c 10-20 ./run_param_test.sh
>>
>> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
>> Cc: Shuah Khan <shuah@kernel.org>
>> Cc: Peter Zijlstra <peterz@infradead.org>
>> Cc: "Paul E. McKenney" <paulmck@kernel.org>
>> Cc: Boqun Feng <boqun.feng@gmail.com>
>> ---
>
> Hi Mathieu,
>
> I applied this to linux-kselftest fixes for the next rc.
>
> Please cc linux-kselftest mailing list on your future patches. This makes
> my workflow easier as it relies on patches going to linux-kselftest
> patchworks
> project.
Will do, thanks!
Mathieu
>
> thanks,
> -- Shuah
>
--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com
prev parent reply other threads:[~2024-01-22 18:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-11 15:49 Mathieu Desnoyers
2024-01-22 18:43 ` Shuah Khan
2024-01-22 18:55 ` Mathieu Desnoyers [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=e33279b2-be4d-4706-8faf-9cf5e8c8e092@efficios.com \
--to=mathieu.desnoyers@efficios.com \
--cc=boqun.feng@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=paulmck@kernel.org \
--cc=peterz@infradead.org \
--cc=shuah@kernel.org \
--cc=skhan@linuxfoundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®