linux-kernel - Re: [PATCH v5 1/4] RISC-V: add Zbc extension detection

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: <20230620-thorn-trowel-9a4a7c387efd@spud>
Date:   Tue, 20 Jun 2023 20:12:13 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Palmer Dabbelt <palmer@...belt.com>
Cc:     heiko@...ech.de, Paul Walmsley <paul.walmsley@...ive.com>,
        aou@...s.berkeley.edu, herbert@...dor.apana.org.au,
        davem@...emloft.net, Conor Dooley <conor.dooley@...rochip.com>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, christoph.muellner@...ll.eu,
        heiko.stuebner@...ll.eu
Subject: Re: [PATCH v5 1/4] RISC-V: add Zbc extension detection

On Tue, Jun 20, 2023 at 12:09:28PM -0700, Palmer Dabbelt wrote:
> On Mon, 12 Jun 2023 14:31:14 PDT (-0700), Conor Dooley wrote:
> > Hey Heiko,
> > 
> > On Mon, Jun 12, 2023 at 11:04:39PM +0200, Heiko Stuebner wrote:
> > > From: Heiko Stuebner <heiko.stuebner@...ll.eu>
> > > 
> > > Add handling for Zbc extension.
> > > 
> > > Zbc provides instruction for carry-less multiplication.
> > > 
> > > Signed-off-by: Heiko Stuebner <heiko.stuebner@...ll.eu>
> > > ---
> > >  arch/riscv/Kconfig             | 22 ++++++++++++++++++++++
> > >  arch/riscv/include/asm/hwcap.h |  1 +
> > >  arch/riscv/kernel/cpu.c        |  1 +
> > >  arch/riscv/kernel/cpufeature.c |  1 +
> > >  4 files changed, 25 insertions(+)
> > 
> > Plumbing into the hwprobe stuff would be nice, but that's not a
> > requirement for getting stuff merged :)
> 
> IIRC we talked about this on IRC, but IMO we shouldn't require something be
> user visible for it to be merged in the kernel.

Yup, I asked you before replying since I wasn't sure what the "rules"
were about hwprobe since it is so new.

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)