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

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Message-ID:
 <DS7PR21MB31029FD3D38063D4F6F5ADA0CE72A@DS7PR21MB3102.namprd21.prod.outlook.com>
Date: Wed, 18 Jun 2025 01:36:03 +0000
From: Long Li <longli@...rosoft.com>
To: Jakub Kicinski <kuba@...nel.org>, "longli@...uxonhyperv.com"
	<longli@...uxonhyperv.com>
CC: KY 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" <linux-hyperv@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>
Subject: RE: [EXTERNAL] Re: [Patch net-next v2] net: mana: Record doorbell
 physical address in PF mode

> 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

Thank you. I'm sending v3.

Long