From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@meta.com>,
linux-nvme@lists.infradead.org
Subject: Re: [PATCHv2 2/2] nvme-pci: use sgls for all user requests if possible
Date: Thu, 14 Nov 2024 17:42:45 +0100 [thread overview]
Message-ID: <20241114164245.GA4132@lst.de> (raw)
In-Reply-To: <ZzYdDSNpH99YHJvb@kbusch-mbp>
On Thu, Nov 14, 2024 at 08:53:49AM -0700, Keith Busch wrote:
> Only admin users can access this path by default. You have to opt-in for
> it, so it's not exploitable unless you ask for it.
We do allow non-privileged users to send I/O commands and a small
whitelist of admin commands by default, limited by the CSE effects.
> I can't see disabling
> the interface entirely. In a previous version of this patch, I had the
> kernel tainted if you tried to do passthrough without SGL support. Would
> that be a fair compromise if I reintroduce that behavior?
Taint might be a bit too strong, but a one-time message in the log might
be useful.
next prev parent reply other threads:[~2024-11-14 16:44 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-12 21:06 [PATCHv2 0/2] Using SGLs for userspace commands Keith Busch
2024-11-12 21:06 ` [PATCHv2 1/2] nvme-pci: add support for sgl metadata Keith Busch
2024-11-13 4:58 ` Christoph Hellwig
2024-11-13 15:48 ` Keith Busch
2024-11-12 21:06 ` [PATCHv2 2/2] nvme-pci: use sgls for all user requests if possible Keith Busch
2024-11-13 4:58 ` Christoph Hellwig
2024-11-13 15:48 ` Keith Busch
2024-11-14 5:56 ` Christoph Hellwig
2024-11-14 15:53 ` Keith Busch
2024-11-14 16:42 ` Christoph Hellwig [this message]
2024-11-14 17:29 ` Keith Busch
2024-11-13 4:50 ` [PATCHv2 0/2] Using SGLs for userspace commands Christoph Hellwig
2024-11-13 15:50 ` Keith Busch
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20241114164245.GA4132@lst.de \
--to=hch@lst.de \
--cc=kbusch@kernel.org \
--cc=kbusch@meta.com \
--cc=linux-nvme@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox