linux-kernel - Re: [PATCHv4 3/8] asm-generic: introduce be48 unaligned accessors

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: <20220304025605.GB2824821@dhcp-10-100-145-180.wdc.com>
Date:   Thu, 3 Mar 2022 18:56:05 -0800
From:   Keith Busch <kbusch@...nel.org>
To:     David Laight <David.Laight@...lab.com>
Cc:     "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "axboe@...nel.dk" <axboe@...nel.dk>, "hch@....de" <hch@....de>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        Hannes Reinecke <hare@...e.de>,
        Chaitanya Kulkarni <kch@...dia.com>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCHv4 3/8] asm-generic: introduce be48 unaligned accessors

On Fri, Mar 04, 2022 at 01:31:26AM +0000, David Laight wrote:
> From: Keith Busch
> > Sent: 03 March 2022 20:13
> > 
> > The NVMe protocol extended the data integrity fields with unaligned
> > 48-bit reference tags.
> 
> If they are reference tags, are they only interpreted by the
> sending system?

No, this field participates in end-to-end data protection formats, so is
verified on both sides.