From: Vladimir Oltean <olteanv@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Michael Walle <michael@walle.cc>,
sean.anderson@seco.com, davem@davemloft.net, edumazet@google.com,
f.fainelli@gmail.com, hkallweit1@gmail.com, kuba@kernel.org,
linux-kernel@vger.kernel.org, linux@armlinux.org.uk,
netdev@vger.kernel.org, pabeni@redhat.com, tobias@waldekranz.com
Subject: Re: [PATCH net-next] net: mdio: Add netlink interface
Date: Tue, 7 Mar 2023 16:05:35 +0200 [thread overview]
Message-ID: <20230307140535.32ldprkyblpmicjg@skbuf> (raw)
In-Reply-To: <684c859a-02e2-4652-9a40-9607410f95e6@lunn.ch>
On Tue, Mar 07, 2023 at 02:49:27PM +0100, Andrew Lunn wrote:
> On Tue, Mar 07, 2023 at 12:23:07PM +0100, Michael Walle wrote:
> > > To prevent userspace phy drivers, writes are disabled by default, and can
> > > only be enabled by editing the source.
> >
> > Maybe we can just taint the kernel using add_taint()? I'm not sure if
> > that will prevent vendors writing user space drivers. Thoughts?
>
> I was thinking about taint as well. But keep the same code structure,
> you need to edit it to enable write.
But as per the commit message, this locks us out of the following
legitimate uses:
- C45-over-C22 (reads)
- Atomic (why only atomic?) (read) access to paged registers
are we ok with the implications?
next prev parent reply other threads:[~2023-03-07 14:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-06 20:45 [PATCH net-next] net: mdio: Add netlink interface Sean Anderson
2023-03-06 22:48 ` Russell King (Oracle)
2023-03-06 23:39 ` Sean Anderson
2023-03-07 13:47 ` Andrew Lunn
2023-03-07 16:41 ` Sean Anderson
2023-03-07 0:05 ` kernel test robot
2023-03-07 11:23 ` Michael Walle
2023-03-07 13:49 ` Andrew Lunn
2023-03-07 14:05 ` Vladimir Oltean [this message]
2023-03-07 14:33 ` Andrew Lunn
2023-03-07 15:00 ` Russell King (Oracle)
2023-03-07 12:26 ` Tobias Waldekranz
2023-03-07 16:30 ` Sean Anderson
2023-03-07 14:22 ` Andrew Lunn
2023-03-07 14:50 ` Russell King (Oracle)
2023-03-07 16:16 ` Sean Anderson
2023-03-07 17:23 ` Andrew Lunn
2023-03-07 17:42 ` Sean Anderson
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