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From:   Haiyang Zhang <haiyangz@microsoft.com>
To:     Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>
CC:     "davem@davemloft.net" <davem@davemloft.net>,
        "kuba@kernel.org" <kuba@kernel.org>,
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>
Subject: RE: [PATCH net-next] net: mana: Add a driver for Microsoft Azure
 Network Adapter (MANA)
Thread-Topic: [PATCH net-next] net: mana: Add a driver for Microsoft Azure
 Network Adapter (MANA)
Thread-Index: AQHXKzvmwFT+jLn9hE+ope3TVVs2GqqpCiOAgAAUhFA=
Date:   Wed, 7 Apr 2021 14:34:01 +0000
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> -----Original Message-----
> From: Wei Liu <wei.liu@kernel.org>
> Sent: Wednesday, April 7, 2021 9:17 AM
> To: Dexuan Cui <decui@microsoft.com>
> Cc: davem@davemloft.net; kuba@kernel.org; KY Srinivasan
> <kys@microsoft.com>; Haiyang Zhang <haiyangz@microsoft.com>; Stephen
> Hemminger <sthemmin@microsoft.com>; wei.liu@kernel.org; Wei Liu
> <liuwe@microsoft.com>; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org; linux-hyperv@vger.kernel.org
> Subject: Re: [PATCH net-next] net: mana: Add a driver for Microsoft Azure
> Network Adapter (MANA)
>=20
> On Tue, Apr 06, 2021 at 04:23:21PM -0700, Dexuan Cui wrote:
> [...]
> > +config MICROSOFT_MANA
> > +	tristate "Microsoft Azure Network Adapter (MANA) support"
> > +	default m
> > +	depends on PCI_MSI
> > +	select PCI_HYPERV
>=20
> OOI which part of the code requires PCI_HYPERV?
>=20
> Asking because I can't immediately find code that looks to be Hyper-V
> specific (searching for vmbus etc). This device looks like any other PCI =
devices
> to me.

It depends on the VF nic's PCI config space which is presented by the pci_h=
yperv driver.

Thanks,
- Haiyang