From: "Uwe Kleine-König (The Capable Hub)" <u.kleine-koenig@baylibre.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "Geert Uytterhoeven" <geert@linux-m68k.org>,
"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
"Anshul Dalal" <anshulusr@gmail.com>,
"Michael Hennerich" <michael.hennerich@analog.com>,
"Yassine Oudjana" <y.oudjana@protonmail.com>,
"Linus Walleij" <linusw@kernel.org>,
"Nicolas Ferre" <nicolas.ferre@microchip.com>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Claudiu Beznea" <claudiu.beznea@tuxon.dev>,
"Support Opensource" <support.opensource@diasemi.com>,
"Nick Dyer" <nick@shmanahar.org>,
"Hans de Goede" <hansg@kernel.org>,
"Job Noorman" <job@noorman.info>,
"Mika Penttilä" <mpenttil@redhat.com>,
"Maxime Coquelin" <mcoquelin.stm32@gmail.com>,
"Alexandre Torgue" <alexandre.torgue@foss.st.com>,
"Kees Cook" <kees@kernel.org>,
"bui duc phuc" <phucduc.bui@gmail.com>,
"Thorsten Blum" <thorsten.blum@linux.dev>,
"Yauhen Kharuzhy" <jekhor@gmail.com>,
"Sakari Ailus" <sakari.ailus@linux.intel.com>,
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"Minseong Kim" <ii4gsp@gmail.com>,
"Ingo Molnar" <mingo@kernel.org>,
"Thomas Gleixner" <tglx@kernel.org>,
"Oleh Kuzhylnyi" <kuzhylol@gmail.com>,
"Marek Vasut" <marek.vasut+renesas@mailbox.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski@oss.qualcomm.com>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Josua Mayer" <josua@solid-run.com>,
"Michael Tretter" <m.tretter@pengutronix.de>,
"Jeff LaBundy" <jeff@labundy.com>,
"Javier Carrasco" <javier.carrasco@wolfvision.net>,
"David Heidelberg" <david@ixit.cz>,
"Petr Hodina" <petr.hodina@protonmail.com>,
"Svyatoslav Ryhel" <clamor95@gmail.com>,
"Johannes Kirchmair" <johannes.kirchmair@skidata.com>,
"Xichao Zhao" <zhao.xichao@vivo.com>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
platform-driver-x86@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com
Subject: Re: [PATCH v1] Input: Use named initializers for arrays of i2c_device_data
Date: Mon, 18 May 2026 09:56:02 +0200 [thread overview]
Message-ID: <agrFDLaPu1nnLIN4@monoceros> (raw)
In-Reply-To: <agrAG3cLjEAPV90B@ashevche-desk.local>
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On Mon, May 18, 2026 at 10:30:35AM +0300, Andy Shevchenko wrote:
> On Mon, May 18, 2026 at 09:24:35AM +0200, Geert Uytterhoeven wrote:
> > Hi Uwe,
> >
> > On Fri, 15 May 2026 at 18:48, Uwe Kleine-König (The Capable Hub)
> > <u.kleine-koenig@baylibre.com> wrote:
> > > My additional motivation for this effort is CHERI[1]. This is a hardware
> >
> > Nice!
> >
> > > extension that uses 128 bit pointers but unsigned long is still 64 bit.
> > > So with CHERI you cannot store pointers in unsigned long variables.
> >
> > Good luck fixing all implicit assumptions about this in the kernel!
> > Also, good luck convincing people to use uintptr_t instead ;-)
> >
> > https://lore.kernel.org/all/CAHk-=wj2OHy-5e+srG1fy+ZU00TmZ1NFp6kFLbVLMXHe7A1d-g@mail.gmail.com
>
> Yeah, I believe Linus will have a strong opinion about all this CHERI stuff :-)
> But let see, it might be surprising turn around.
Yeah, it's not yet the time to start that discussion, I want to have the
patch stack in a better state before that.
I think the strongest argument will be that
"unsigned long" [...] is an integer type large enough to hold a
pointer.
just isn't true for CHERI.
Best regards
Uwe
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prev parent reply other threads:[~2026-05-18 7:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-15 16:48 [PATCH v1] Input: Use named initializers for arrays of i2c_device_data Uwe Kleine-König (The Capable Hub)
2026-05-18 7:24 ` Geert Uytterhoeven
2026-05-18 7:30 ` Andy Shevchenko
2026-05-18 7:56 ` Uwe Kleine-König (The Capable Hub) [this message]
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