RE: [PATCH net-next] net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)

[Haiyang Zhang]

> -----Original Message-----
> From: Wei Liu <wei.liu@xxxxxxxxxx>
> Sent: Wednesday, April 7, 2021 9:17 AM
> To: Dexuan Cui <decui@xxxxxxxxxxxxx>
> Cc: davem@xxxxxxxxxxxxx; kuba@xxxxxxxxxx; KY Srinivasan
> <kys@xxxxxxxxxxxxx>; Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>; Stephen
> Hemminger <sthemmin@xxxxxxxxxxxxx>; wei.liu@xxxxxxxxxx; Wei Liu
> <liuwe@xxxxxxxxxxxxx>; netdev@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; linux-hyperv@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH net-next] net: mana: Add a driver for Microsoft Azure
> Network Adapter (MANA)
> 
> 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
> 
> OOI which part of the code requires PCI_HYPERV?
> 
> 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_hyperv driver.

Thanks,
- Haiyang