From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Dan Williams <dan.j.williams@intel.com>
Cc: "Kuppuswamy,
Sathyanarayanan" <sathyanarayanan.kuppuswamy@linux.intel.com>,
Andi Kleen <ak@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: Thu, 5 Aug 2021 21:28:22 +0200 [thread overview]
Message-ID: <YQw71hBx4/w14Fir@kroah.com> (raw)
In-Reply-To: <CAPcyv4gV9GK93rgtoHxhshzDGk0ueJn0d9LXYitJ8=wJWzmWHg@mail.gmail.com>
On Thu, Aug 05, 2021 at 12:18:12PM -0700, Dan Williams wrote:
> On Thu, Aug 5, 2021 at 12:12 PM Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > On Thu, Aug 05, 2021 at 11:53:52AM -0700, Kuppuswamy, Sathyanarayanan wrote:
> > > I am not sure how USB and Thunderbolt "authorzied" model works. But I
> > > don't think it prevents built-in driver probes during kernel boot right?
> >
> > Yes it does.
> >
> > Again Intel created this framework well over a decade ago for busses
> > that it deemed that it did not want to "trust" to instantly probe
> > drivers for and made it part of the Wireless USB specification.
> >
> > Then Intel went and added the same framework to Thunderbolt for the same
> > reason.
> >
> > To ignore this work is quite odd, you might want to talk to your
> > coworkers...
>
> Sometimes we need upstream to connect us wayward drones back into the
> hive mind. Forgive me for not immediately recognizing that the
> existing 'authorized' mechanisms might be repurposed for this use
> case.
Not your fault, I'm more amazed that Andi doesn't remember this, he's
been around longer :)
But the first instinct should not be "let's go add a new feature", but
rather, "how has this problem been solved by others first" because,
really, this is not a new issue at all. You should not rely on just me
to point out existing kernel features, we do have documentation you
know...
thanks,
greg k-h
next prev parent reply other threads:[~2021-08-05 19:28 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
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 [this message]
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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