From: Dan Williams <dan.j.williams@intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andi Kleen <ak@linux.intel.com>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Doc Mailing List <linux-doc@vger.kernel.org>
Subject: Re: [PATCH v1] driver: base: Add driver filter support
Date: Fri, 6 Aug 2021 07:36:25 -0700 [thread overview]
Message-ID: <CAPcyv4jXoj9_xJ9p3rfoHgZc6xsjnvbeqHwxw8Y2h+kx4-qs+Q@mail.gmail.com> (raw)
In-Reply-To: <YQzF/utgrJfbZuHh@kroah.com>
On Thu, Aug 5, 2021 at 10:17 PM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> On Thu, Aug 05, 2021 at 06:00:25PM -0700, Dan Williams wrote:
> > That said, per-device authorization is a little bit different than
> > per-driver trust. Driver trust is easy to reason about for a built-in
> > policy, while per-device authorization is easy for userspace to reason
> > about for "why is this device not talking to its driver?".
>
> See my other email about how the "per driver" trust is the wrong model,
> you need to stick to "per device" trust. Especially given that you are
> giving control of your kernel drivers over to third parties, you already
> trust them to do the right thing.
Andi, if the number of TDX devices is small could they grow an SPDM
over virtio channel? Then you can measure trust from the VM to the VMM
to the attestation server.
next prev parent reply other threads:[~2021-08-06 14:36 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-04 17:43 [PATCH v1] driver: base: Add driver filter support Kuppuswamy Sathyanarayanan
2021-08-04 18:08 ` Matthew Wilcox
2021-08-04 18:29 ` Kuppuswamy, Sathyanarayanan
2021-08-04 18:33 ` Matthew Wilcox
2021-08-04 19:27 ` Andi Kleen
2021-08-04 18:45 ` Dan Williams
2021-08-04 19:29 ` Greg Kroah-Hartman
2021-08-04 19:50 ` Andi Kleen
2021-08-04 20:09 ` Kuppuswamy, Sathyanarayanan
2021-08-05 7:50 ` Greg Kroah-Hartman
2021-08-05 7:49 ` Greg Kroah-Hartman
2021-08-05 7:55 ` Greg Kroah-Hartman
2021-08-05 7:58 ` Greg Kroah-Hartman
2021-08-05 13:52 ` Andi Kleen
2021-08-05 17:51 ` Greg Kroah-Hartman
2021-08-05 17:58 ` Andi Kleen
2021-08-05 18:09 ` Greg Kroah-Hartman
2021-08-05 18:44 ` Andi Kleen
2021-08-05 19:01 ` Dan Williams
2021-08-05 19:08 ` Kuppuswamy, Sathyanarayanan
2021-08-05 19:28 ` Greg Kroah-Hartman
2021-08-05 21:10 ` Andi Kleen
2021-08-06 1:00 ` Dan Williams
2021-08-06 5:17 ` Greg Kroah-Hartman
2021-08-06 14:36 ` Dan Williams [this message]
2021-08-06 5:07 ` Greg Kroah-Hartman
2021-08-05 18:53 ` Kuppuswamy, Sathyanarayanan
2021-08-05 19:12 ` Greg Kroah-Hartman
2021-08-05 19:18 ` Dan Williams
2021-08-05 19:28 ` Greg Kroah-Hartman
2021-08-05 19:52 ` Dan Williams
2021-08-06 11:15 ` Jonathan Cameron
2021-08-05 16:37 ` Dan Williams
2021-08-05 17:25 ` Kuppuswamy, Sathyanarayanan
2021-08-05 17:48 ` Greg Kroah-Hartman
2021-08-05 17:52 ` Andi Kleen
2021-08-05 18:11 ` Greg Kroah-Hartman
2021-08-05 17:49 ` Greg Kroah-Hartman
2021-08-04 20:11 ` Dan Williams
2021-08-04 20:29 ` Kuppuswamy, Sathyanarayanan
2021-08-04 21:07 ` Matthew Wilcox
2021-08-04 21:28 ` Dan Williams
2021-08-05 4:45 ` Andi Kleen
2021-08-05 7:59 ` Greg Kroah-Hartman
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