netdev - Re: [PATCH v1 net-next 3/3] net: ena: Add PHC documentation

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Message-ID: <5f469c57a34c0a2a76b6f8c4517a0e4b7c038e8b.camel@infradead.org>
Date: Mon, 21 Oct 2024 17:24:24 +0100
From: David Woodhouse <dwmw2@...radead.org>
To: David Arinzon <darinzon@...zon.com>, David Miller <davem@...emloft.net>,
  Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Cc: Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, 
 "Woodhouse, David" <dwmw@...zon.com>, "Machulsky, Zorik"
 <zorik@...zon.com>, "Matushevsky, Alexander" <matua@...zon.com>, Saeed
 Bshara <saeedb@...zon.com>, "Wilson, Matt" <msw@...zon.com>,  "Liguori,
 Anthony" <aliguori@...zon.com>, "Bshara, Nafea" <nafea@...zon.com>,
 "Schmeilin, Evgeny" <evgenys@...zon.com>, "Belgazal, Netanel"
 <netanel@...zon.com>, "Saidi, Ali" <alisaidi@...zon.com>, "Herrenschmidt,
 Benjamin" <benh@...zon.com>,  "Kiyanovski, Arthur" <akiyano@...zon.com>,
 "Dagan, Noam" <ndagan@...zon.com>, "Bernstein, Amit" <amitbern@...zon.com>,
 "Agroskin, Shay" <shayagr@...zon.com>, "Abboud, Osama"
 <osamaabb@...zon.com>, "Ostrovsky, Evgeny" <evostrov@...zon.com>, 
 "Tabachnik, Ofir" <ofirt@...zon.com>, "Machnikowski, Maciek"
 <maciek@...hnikowski.net>
Subject: Re: [PATCH v1 net-next 3/3] net: ena: Add PHC documentation

On Mon, 2024-10-21 at 08:20 +0300, David Arinzon wrote:
> 
> +  testptp -d /dev/ptp$(ethtool -T <interface> | awk '/PTP Hardware Clock:/ {print $NF}') -k 1
> +

Does udev create a stable symlink for this, like it does for e.g.
/dev/ptp_kvm ? 

I note the EC2 documentation *still* tells users to use /dev/ptp0
without even checking which device that is, so they could get something
*very* different to what they expect, if they accidentally start using
the KVM PTP clock instead!

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