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From: Yury Norov <ynorov@nvidia.com>
To: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	David Laight <david.laight.linux@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-alpha@vger.kernel.org, Yury Norov <yury.norov@gmail.com>,
	linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org,
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Subject: Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER to kconfig and reduce ifdefery
Date: Mon, 27 Apr 2026 14:39:16 -0400	[thread overview]
Message-ID: <ae-tVFVfx72oCC_i@yury> (raw)
In-Reply-To: <9fe875d2f55af59c12708336c571a46038528678.1777306795.git.chleroy@kernel.org>

On Mon, Apr 27, 2026 at 07:13:43PM +0200, Christophe Leroy (CS GROUP) wrote:
> Among the 21 architectures supported by the kernel, 16 define both
> INLINE_COPY_TO_USER and INLINE_COPY_FROM_USER while the 5 other ones
> don't define any of the two.
> 
> To simplify and reduce risk of mistakes, convert them to a single
> kconfig item named CONFIG_ARCH_WANTS_NOINLINE_COPY which will be

We've got a special word for it: outline. Can you name it
CONFIG_OUTLINE_USERCOPY, or similar?

> selected by the 5 architectures that don't want inlined copy.
> 
> To minimise complication in a later patch, also remove
> ifdefery and replace it with IS_ENABLED().
> 
> Signed-off-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>

Andrew has taken my consolidation patch for INLINE_COPY_USER:

https://lore.kernel.org/all/20260427085814.7ca0b134603b8d5813e23396@linux-foundation.org/

Please base your series on top of it.

I'm not sure this patch is relevant to the goal of your series. Maybe
send it separately?

Thanks,
Yury

  reply	other threads:[~2026-04-27 18:39 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-27 17:13 [RFC PATCH v1 0/9] uaccess: Convert small fixed size copy_{to/from}_user() to scoped user access Christophe Leroy (CS GROUP)
2026-04-27 17:13 ` [RFC PATCH v1 1/9] uaccess: Split check_zeroed_user() out of usercopy.c Christophe Leroy (CS GROUP)
2026-04-27 17:13 ` [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER to kconfig and reduce ifdefery Christophe Leroy (CS GROUP)
2026-04-27 18:39   ` Yury Norov [this message]
2026-04-27 17:13 ` [RFC PATCH v1 3/9] x86/umip: Be stricter in fixup_umip_exception() Christophe Leroy (CS GROUP)
2026-04-27 17:13 ` [RFC PATCH v1 4/9] uaccess: Introduce copy_{to/from}_user_partial() Christophe Leroy (CS GROUP)
2026-04-27 17:13 ` [RFC PATCH v1 5/9] uaccess: Switch to copy_{to/from}_user_partial() when relevant Christophe Leroy (CS GROUP)
2026-04-27 18:07   ` Alice Ryhl
2026-04-27 19:01   ` Linus Torvalds
2026-04-27 17:13 ` [RFC PATCH v1 6/9] uaccess: Change copy_{to/from}_user to return -EFAULT Christophe Leroy (CS GROUP)
2026-04-27 17:13 ` [RFC PATCH v1 7/9] x86: Add unsafe_copy_from_user() Christophe Leroy (CS GROUP)
2026-04-27 17:58   ` Yury Norov
2026-04-27 18:20     ` Christophe Leroy (CS GROUP)
2026-04-27 19:19       ` Yury Norov
2026-04-27 17:13 ` [RFC PATCH v1 8/9] arm64: " Christophe Leroy (CS GROUP)
2026-04-27 17:13 ` [RFC PATCH v1 9/9] uaccess: Convert small fixed size copy_{to/from}_user() to scoped user access Christophe Leroy (CS GROUP)
2026-04-27 19:01 ` [RFC PATCH v1 0/9] " Helge Deller

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