From: Thomas Gleixner <tglx@linutronix•de>
To: Linus Torvalds <torvalds@linux-foundation•org>
Cc: "David Laight" <david.laight.linux@gmail•com>,
LKML <linux-kernel@vger•kernel.org>,
"Christophe Leroy" <christophe.leroy@csgroup•eu>,
"Mathieu Desnoyers" <mathieu.desnoyers@efficios•com>,
"Andrew Cooper" <andrew.cooper3@citrix•com>,
"kernel test robot" <lkp@intel•com>,
"Russell King" <linux@armlinux•org.uk>,
linux-arm-kernel@lists•infradead.org, x86@kernel•org,
"Madhavan Srinivasan" <maddy@linux•ibm.com>,
"Michael Ellerman" <mpe@ellerman•id.au>,
"Nicholas Piggin" <npiggin@gmail•com>,
linuxppc-dev@lists•ozlabs.org, "Paul Walmsley" <pjw@kernel•org>,
"Palmer Dabbelt" <palmer@dabbelt•com>,
linux-riscv@lists•infradead.org,
"Heiko Carstens" <hca@linux•ibm.com>,
"Christian Borntraeger" <borntraeger@linux•ibm.com>,
"Sven Schnelle" <svens@linux•ibm.com>,
linux-s390@vger•kernel.org,
"Julia Lawall" <Julia.Lawall@inria•fr>,
"Nicolas Palix" <nicolas.palix@imag•fr>,
"Peter Zijlstra" <peterz@infradead•org>,
"Darren Hart" <dvhart@infradead•org>,
"Davidlohr Bueso" <dave@stgolabs•net>,
"André Almeida" <andrealmeid@igalia•com>,
"Alexander Viro" <viro@zeniv•linux.org.uk>,
"Christian Brauner" <brauner@kernel•org>,
"Jan Kara" <jack@suse•cz>,
linux-fsdevel@vger•kernel.org
Subject: Re: [patch V3 07/12] uaccess: Provide scoped masked user access regions
Date: Tue, 21 Oct 2025 17:45:56 +0200 [thread overview]
Message-ID: <871pmwz2a3.ffs@tglx> (raw)
In-Reply-To: <CAHk-=wgE-dAHPzrZ7RxwZNdqw8u-5w1HGQUWAWQ0rMDCJORfCw@mail.gmail.com>
On Tue, Oct 21 2025 at 05:06, Linus Torvalds wrote:
> On Tue, 21 Oct 2025 at 04:30, Thomas Gleixner <tglx@linutronix•de> wrote:
>>
>> On Mon, Oct 20 2025 at 19:28, David Laight wrote:
>> >
>> > (I don't like the word 'masked' at all, not sure where it came from.
>>
>> It's what Linus named it and I did not think about the name much so far.
>
> The original implementation was a mask application, so it made sense
> at the time.
>
> We could still change it since there aren't that many users, but I'm
> not sure what would be a better name...
I couldn't come up with something sensible for the architecture side.
But for the scope guards I think the simple scoped_user_$MODE_access()
is fine as for the usage site it's just a user access, no?
the scope magic resolves either to the "masked" variant or to the
regular user_access_begin() + speculation barrier depending on
architecture support. But that's under the hood an implementation detail
of the scope...() macros.
Thanks,
tglx
next prev parent reply other threads:[~2025-10-21 15:46 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-17 10:08 [patch V3 00/12] uaccess: Provide and use scopes for user masked access Thomas Gleixner
2025-10-17 10:08 ` [patch V3 01/12] ARM: uaccess: Implement missing __get_user_asm_dword() Thomas Gleixner
2025-10-17 12:36 ` Mathieu Desnoyers
2025-10-17 10:08 ` [patch V3 02/12] uaccess: Provide ASM GOTO safe wrappers for unsafe_*_user() Thomas Gleixner
2025-10-17 12:43 ` Mathieu Desnoyers
2025-10-17 12:48 ` Mathieu Desnoyers
2025-10-17 10:09 ` [patch V3 03/12] x86/uaccess: Use unsafe wrappers for ASM GOTO Thomas Gleixner
2025-10-17 10:09 ` [patch V3 04/12] powerpc/uaccess: " Thomas Gleixner
2025-10-17 10:09 ` [patch V3 05/12] riscv/uaccess: " Thomas Gleixner
2025-10-17 10:09 ` [patch V3 06/12] s390/uaccess: " Thomas Gleixner
2025-10-17 10:09 ` [patch V3 07/12] uaccess: Provide scoped masked user access regions Thomas Gleixner
2025-10-17 11:08 ` Andrew Cooper
2025-10-17 11:21 ` Thomas Gleixner
2025-10-17 11:29 ` Andrew Cooper
2025-10-17 11:25 ` Peter Zijlstra
2025-10-17 13:23 ` Mathieu Desnoyers
2025-10-20 18:28 ` David Laight
2025-10-21 14:29 ` Thomas Gleixner
2025-10-21 14:42 ` Thomas Gleixner
2025-10-21 20:52 ` David Laight
2025-10-21 14:44 ` Peter Zijlstra
2025-10-21 15:06 ` Linus Torvalds
2025-10-21 15:45 ` Thomas Gleixner [this message]
2025-10-21 15:51 ` Linus Torvalds
2025-10-21 18:55 ` David Laight
2025-10-17 10:09 ` [patch V3 08/12] uaccess: Provide put/get_user_masked() Thomas Gleixner
2025-10-17 13:41 ` Mathieu Desnoyers
2025-10-17 13:45 ` Mathieu Desnoyers
2025-10-20 6:50 ` Thomas Gleixner
2025-10-17 10:09 ` [patch V3 09/12] [RFC] coccinelle: misc: Add scoped_masked_$MODE_access() checker script Thomas Gleixner
2025-10-17 10:51 ` Julia Lawall
2025-10-17 10:09 ` [patch V3 10/12] futex: Convert to scoped masked user access Thomas Gleixner
2025-10-17 10:09 ` [patch V3 11/12] x86/futex: " Thomas Gleixner
2025-10-17 13:37 ` Andrew Cooper
2025-10-17 10:09 ` [patch V3 12/12] select: " Thomas Gleixner
2025-10-17 10:35 ` Peter Zijlstra
2025-10-17 11:12 ` Thomas Gleixner
2025-10-17 10:37 ` [patch V3 00/12] uaccess: Provide and use scopes for user masked access Peter Zijlstra
2025-10-17 10:50 ` Andrew Cooper
2025-10-17 12:25 ` Mathieu Desnoyers
2025-12-19 8:10 ` patchwork-bot+linux-riscv
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