From: Jakub Kicinski <kuba@kernel.org>
To: Wen Gu <guwen@linux.alibaba.com>
Cc: richardcochran@gmail.com, andrew+netdev@lunn.ch,
davem@davemloft.net, edumazet@google.com, pabeni@redhat.com,
xuanzhuo@linux.alibaba.com, dust.li@linux.alibaba.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next v5 1/2] ptp: introduce Alibaba CIPU PHC driver
Date: Fri, 31 Oct 2025 16:58:20 -0700 [thread overview]
Message-ID: <20251031165820.70353b68@kernel.org> (raw)
In-Reply-To: <20251030121314.56729-2-guwen@linux.alibaba.com>
On Thu, 30 Oct 2025 20:13:13 +0800 Wen Gu wrote:
> This adds a driver for Alibaba CIPU PTP clock. The CIPU, an underlying
> infrastructure of Alibaba Cloud, synchronizes time with atomic clocks
> via the network and provides microsecond or sub-microsecond precision
> timestamps for VMs and bare metals on cloud.
>
> User space processes, such as chrony, running in VMs or on bare metals
> can get the high precision time through the PTP device exposed by this
> driver.
As mentioned on previous revisions this is a pure clock device which has
nothing to do with networking and PTP. There should be a separate class
for "hypervisor clocks", if not a common driver.
--
pw-bot: cr
next prev parent reply other threads:[~2025-10-31 23:58 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-30 12:13 [PATCH net-next v5 0/2] ptp: Alibaba CIPU PTP clock driver Wen Gu
2025-10-30 12:13 ` [PATCH net-next v5 1/2] ptp: introduce Alibaba CIPU PHC driver Wen Gu
2025-10-31 23:58 ` Jakub Kicinski [this message]
2025-11-05 10:22 ` Wen Gu
2025-11-06 0:24 ` Jakub Kicinski
2025-11-27 5:48 ` Wen Gu
2025-11-27 16:36 ` Jakub Kicinski
2025-11-28 6:22 ` Wen Gu
2025-11-28 18:24 ` Jakub Kicinski
2025-12-01 6:04 ` Wen Gu
2025-12-12 6:50 ` Wen Gu
2025-12-12 22:50 ` Jakub Kicinski
2025-12-14 14:03 ` Wen Gu
2025-12-16 21:58 ` Jakub Kicinski
2025-12-17 12:40 ` Wen Gu
2025-12-22 7:18 ` Wen Gu
2026-01-02 19:51 ` Jakub Kicinski
2026-01-04 6:11 ` Wen Gu
2026-01-09 9:25 ` David Woodhouse
2026-01-12 3:45 ` Wen Gu
2025-12-18 12:28 ` David Woodhouse
2025-12-22 12:44 ` Wen Gu
2025-10-30 12:13 ` [PATCH net-next v5 2/2] ptp: add sysfs documentation for " Wen Gu
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