linux-kernel - Re: [patch V5 02/12] uaccess: Provide ASM GOTO safe wrappers for unsafe_*

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Message-ID: <87jz0fuinj.ffs@tglx>
Date: Tue, 28 Oct 2025 16:53:52 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Yann Ylavic <ylavic.dev@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>, Linus Torvalds
 <torvalds@...ux-foundation.org>, kernel test robot <lkp@...el.com>,
 Russell King <linux@...linux.org.uk>,
 linux-arm-kernel@...ts.infradead.org, x86@...nel.org, Madhavan Srinivasan
 <maddy@...ux.ibm.com>, Michael Ellerman <mpe@...erman.id.au>, Nicholas
 Piggin <npiggin@...il.com>, Christophe Leroy
 <christophe.leroy@...roup.eu>, linuxppc-dev@...ts.ozlabs.org, Paul
 Walmsley <pjw@...nel.org>, Palmer Dabbelt <palmer@...belt.com>,
 linux-riscv@...ts.infradead.org, Heiko Carstens <hca@...ux.ibm.com>,
 Christian Borntraeger <borntraeger@...ux.ibm.com>, Sven Schnelle
 <svens@...ux.ibm.com>, linux-s390@...r.kernel.org, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Andrew Cooper
 <andrew.cooper3@...rix.com>, David Laight <david.laight.linux@...il.com>,
 Julia Lawall <Julia.Lawall@...ia.fr>, Nicolas Palix
 <nicolas.palix@...g.fr>, Peter Zijlstra <peterz@...radead.org>, Darren
 Hart <dvhart@...radead.org>, Davidlohr Bueso <dave@...olabs.net>,
 André
 Almeida <andrealmeid@...lia.com>, Alexander Viro
 <viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, Jan
 Kara <jack@...e.cz>, linux-fsdevel@...r.kernel.org
Subject: Re: [patch V5 02/12] uaccess: Provide ASM GOTO safe wrappers for
 unsafe_*_user()

On Tue, Oct 28 2025 at 15:04, Yann Ylavic wrote:
> On Tue, Oct 28, 2025 at 10:32 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>> +
>> +#define __put_kernel_nofault(dst, src, type, label)            \
>> +do {                                                           \
>> +       __label__ local_label;                                  \
>> +       arch_get_kernel_nofault(dst, src, type, local_label);   \
>
> Probably arch_put_kernel_nofault() instead?

Duh. Indeed