From: Johannes Berg <johannes@sipsolutions.net>
To: Arnd Bergmann <arnd@kernel.org>, linux-arch@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Anton Ivanov <anton.ivanov@cambridgegreys.com>,
Brian Cain <bcain@codeaurora.org>,
Chris Zankel <chris@zankel.net>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Christoph Hellwig <hch@lst.de>, Guo Ren <guoren@kernel.org>,
Heiko Carstens <hca@linux.ibm.com>, Helge Deller <deller@gmx.de>,
Jeff Dike <jdike@addtoit.com>,
Linus Walleij <linus.walleij@linaro.org>,
Max Filippov <jcmvbkbc@gmail.com>,
Michal Simek <monstr@monstr.eu>,
Richard Weinberger <richard@nod.at>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Vasily Gorbik <gor@linux.ibm.com>,
Vineet Gupta <vgupta@synopsys.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org,
linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
linux-s390@vger.kernel.org, linux-snps-arc@lists.infradead.org,
linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org,
uclinux-h8-devel@lists.sourceforge.jp
Subject: Re: [PATCH v3 9/9] asm-generic: reverse GENERIC_{STRNCPY_FROM, STRNLEN}_USER symbols
Date: Thu, 22 Jul 2021 15:57:56 +0200 [thread overview]
Message-ID: <29adc1c164805e355b37d1d4668ebda9fb7fa872.camel@sipsolutions.net> (raw)
In-Reply-To: <20210722124814.778059-10-arnd@kernel.org>
>
> The remaining architectures at the moment are: ia64, mips, parisc,
> s390, um and xtensa. We should probably convert these as well, but
I'm not sure it makes sense to convert um, the implementation uses
strncpy(), and that should use the libc implementation, which is tuned
for the actual hardware that the binary is running on, so performance
wise that might be better.
OTOH, maybe this is all in the noise given the huge syscall overhead in
um, so maybe unifying it would make more sense.
johannes
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next prev parent reply other threads:[~2021-07-22 13:59 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-22 12:48 [PATCH v3 0/6] asm-generic: strncpy_from_user/strnlen_user cleanup Arnd Bergmann
2021-07-22 12:48 ` [PATCH v3 1/9] asm-generic/uaccess.h: remove __strncpy_from_user/__strnlen_user Arnd Bergmann
2021-07-22 12:59 ` Christoph Hellwig
2021-07-22 12:48 ` [PATCH v3 2/9] h8300: remove stale strncpy_from_user Arnd Bergmann
2021-07-22 12:59 ` Christoph Hellwig
2021-07-22 12:48 ` [PATCH v3 3/9] hexagon: use generic strncpy/strnlen from_user Arnd Bergmann
2021-07-22 13:00 ` Christoph Hellwig
2021-07-22 12:48 ` [PATCH v3 4/9] arc: " Arnd Bergmann
2021-07-22 13:00 ` Christoph Hellwig
2021-07-22 15:34 ` Vineet Gupta
2021-07-22 12:48 ` [PATCH v3 5/9] csky: " Arnd Bergmann
2021-07-22 13:01 ` Christoph Hellwig
2021-07-22 12:48 ` [PATCH v3 6/9] microblaze: " Arnd Bergmann
2021-07-22 13:01 ` Christoph Hellwig
2021-07-22 12:48 ` [PATCH v3 7/9] asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user Arnd Bergmann
2021-07-22 13:02 ` Christoph Hellwig
2021-07-22 12:48 ` [PATCH v3 8/9] asm-generic: remove extra strn{cpy_from, len}_user declarations Arnd Bergmann
2021-07-22 13:02 ` [PATCH v3 8/9] asm-generic: remove extra strn{cpy_from,len}_user declarations Christoph Hellwig
2021-07-22 12:48 ` [PATCH v3 9/9] asm-generic: reverse GENERIC_{STRNCPY_FROM, STRNLEN}_USER symbols Arnd Bergmann
2021-07-22 13:03 ` [PATCH v3 9/9] asm-generic: reverse GENERIC_{STRNCPY_FROM,STRNLEN}_USER symbols Christoph Hellwig
2021-07-22 13:57 ` Johannes Berg [this message]
2021-07-22 14:01 ` [PATCH v3 9/9] asm-generic: reverse GENERIC_{STRNCPY_FROM, STRNLEN}_USER symbols Arnd Bergmann
2021-07-22 20:07 ` Heiko Carstens
2021-07-23 12:44 ` Arnd Bergmann
2021-07-24 9:44 ` Geert Uytterhoeven
2021-07-26 8:55 ` [PATCH v3 9/9] asm-generic: reverse GENERIC_{STRNCPY_FROM,STRNLEN}_USER symbols Helge Deller
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