linux-kernel - RE: [PATCH] riscv: use the generic string routines

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <9a8137149a164a13a7a04d72b133ad3b@AcuMS.aculab.com>
Date:   Mon, 13 Sep 2021 11:35:40 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Guo Ren' <guoren@...nel.org>, Palmer Dabbelt <palmer@...belt.com>
CC:     Matteo Croce <mcroce@...ux.microsoft.com>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Atish Patra <Atish.Patra@....com>,
        "Emil Renner Berthing" <kernel@...il.dk>,
        Akira Tsukamoto <akira.tsukamoto@...il.com>,
        Drew Fustini <drew@...gleboard.org>,
        Bin Meng <bmeng.cn@...il.com>,
        "Christoph Hellwig" <hch@...radead.org>
Subject: RE: [PATCH] riscv: use the generic string routines

> > These ended up getting rejected by Linus, so I'm going to hold off on
> > this for now.  If they're really out of lib/ then I'll take the C
> > routines in arch/riscv, but either way it's an issue for the next
> > release.
> Agree, we should take the C routine in arch/riscv for common
> implementation. If any vendor what custom implementation they could
> use the alternative framework in errata for string operations.

I though the asm ones were significantly faster because
they were less affected by read latency.

(But they were horribly broken for misaligned transfers.)

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)