From: David Laight <David.Laight@ACULAB.COM>
To: 'Alexander Potapenko' <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>
Cc: Peter Collingbourne <pcc@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
Andy Lutomirski <luto@kernel.org>,
Kees Cook <keescook@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
"Masahiro Yamada" <masahiroy@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>,
"YiFei Zhu" <yifeifz2@illinois.edu>,
Colin Ian King <colin.king@canonical.com>,
"Mark Rutland" <mark.rutland@arm.com>,
Frederic Weisbecker <frederic@kernel.org>,
Viresh Kumar <viresh.kumar@linaro.org>,
Andrey Konovalov <andreyknvl@gmail.com>,
Gabriel Krisman Bertazi <krisman@collabora.com>,
Chris Hyser <chris.hyser@oracle.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Chris Wilson <chris@chris-wilson.co.uk>,
Arnd Bergmann <arnd@arndb.de>,
Christian Brauner <christian.brauner@ubuntu.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Alexey Gladkov <legion@kernel.org>,
Ran Xiaokai <ran.xiaokai@zte.com.cn>,
David Hildenbrand <david@redhat.com>,
Xiaofeng Cao <caoxiaofeng@yulong.com>,
Cyrill Gorcunov <gorcunov@gmail.com>,
Thomas Cedeno <thomascedeno@google.com>,
Marco Elver <elver@google.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Evgenii Stepanov <eugenis@google.com>
Subject: RE: [PATCH v2 2/5] uaccess-buffer: add core code
Date: Tue, 23 Nov 2021 14:53:53 +0000 [thread overview]
Message-ID: <1dab2edad29b482e8b7965a373ed0dea@AcuMS.aculab.com> (raw)
In-Reply-To: <CAG_fn=VN001yOZ_kN3rOENKYvEioRkc0J0ZZYtLKKshK4X2yfg@mail.gmail.com>
From: Alexander Potapenko
> Sent: 23 November 2021 10:20
...
> So if uaccess logging is meant for production use, it should be
> possible to lock the feature down from unwanted users.
Isn't the conditional for logging every get_user() and put_user()
going to completely kill performance?
I'm not sure I'd want this code compiled into any kernel I use.
David
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Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
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next prev parent reply other threads:[~2021-11-23 14:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-23 5:16 [PATCH v2 0/5] kernel: introduce uaccess logging Peter Collingbourne
2021-11-23 5:16 ` [PATCH v2 1/5] fs: use raw_copy_from_user() to copy mount() data Peter Collingbourne
2021-11-23 7:50 ` Dmitry Vyukov
2021-11-23 10:09 ` Alexander Potapenko
2021-12-08 3:53 ` Peter Collingbourne
2021-11-23 5:16 ` [PATCH v2 2/5] uaccess-buffer: add core code Peter Collingbourne
2021-11-23 9:56 ` Dmitry Vyukov
2021-11-23 10:08 ` Dmitry Vyukov
2021-11-23 10:19 ` Alexander Potapenko
2021-11-23 14:53 ` David Laight [this message]
2021-12-08 3:52 ` Peter Collingbourne
2021-11-23 5:16 ` [PATCH v2 3/5] uaccess-buffer: add CONFIG_GENERIC_ENTRY support Peter Collingbourne
2021-11-23 5:16 ` [PATCH v2 4/5] arm64: add support for uaccess logging Peter Collingbourne
2021-11-23 5:16 ` [PATCH v2 5/5] Documentation: document " Peter Collingbourne
2021-11-23 7:46 ` Dmitry Vyukov
2021-12-10 21:29 ` Peter Collingbourne
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