netdev - Re: [Patch net-next v2] net: mana: Record doorbell physical address in PF mode

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Message-ID: <20250616152318.26e1ea3e@kernel.org>
Date: Mon, 16 Jun 2025 15:23:18 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: longli@...uxonhyperv.com
Cc: longli@...rosoft.com, "K. Y. Srinivasan" <kys@...rosoft.com>, Haiyang
 Zhang <haiyangz@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, Dexuan Cui
 <decui@...rosoft.com>, "David S. Miller" <davem@...emloft.net>, Eric
 Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Shradha
 Gupta <shradhagupta@...ux.microsoft.com>, Simon Horman <horms@...nel.org>,
 Konstantin Taranov <kotaranov@...rosoft.com>, Souradeep Chakrabarti
 <schakrabarti@...ux.microsoft.com>, Erick Archer
 <erick.archer@...look.com>, linux-hyperv@...r.kernel.org,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-rdma@...r.kernel.org
Subject: Re: [Patch net-next v2] net: mana: Record doorbell physical address
 in PF mode

On Fri, 13 Jun 2025 10:46:05 -0700 longli@...uxonhyperv.com wrote:
> MANA supports RDMA in PF mode. The driver should record the doorbell
> physical address when in PF mode.
> 
> The doorbell physical address is used by the RDMA driver to map
> doorbell pages of the device to user-mode applications through RDMA
> verbs interface. In the past, they have been mapped to user-mode while
> the device is in VF mode. With the support for PF mode implemented,
> also expose those pages in PF mode.

It'd be good to indicate if the PF mode support is implemented as in
ready to be posted to the list, or implemented as in already in the
tree? If it's in tree then please quote the commit. If upcoming please
rephrase.

This commit msg is much better, thank you, but to a person handling
backports it will still not be immediately clear whether this is prep
work for a new code path, or a bug fix.
-- 
pw-bot: cr