netdev - Re: [PATCH v10 vfio 2/7] vfio/pds: Initial support for pds

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Message-ID: <50961ef4-aea1-1866-2ddc-5a3fd1c1a5ea@amd.com>
Date: Fri, 16 Jun 2023 11:42:13 -0700
From: Brett Creeley <bcreeley@....com>
To: "Tian, Kevin" <kevin.tian@...el.com>,
 Brett Creeley <brett.creeley@....com>,
 "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
 "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
 "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
 "jgg@...dia.com" <jgg@...dia.com>, "yishaih@...dia.com"
 <yishaih@...dia.com>,
 "shameerali.kolothum.thodi@...wei.com" <shameerali.kolothum.thodi@...wei.com>
Cc: "shannon.nelson@....com" <shannon.nelson@....com>
Subject: Re: [PATCH v10 vfio 2/7] vfio/pds: Initial support for pds_vfio VFIO
 driver

On 6/15/2023 11:56 PM, Tian, Kevin wrote:
> Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding.
> 
> 
>> From: Brett Creeley <brett.creeley@....com>
>> Sent: Saturday, June 3, 2023 6:03 AM
>>
>> This is the initial framework for the new pds_vfio device driver. This
>> does the very basics of registering the PDS PCI device and configuring
>> it as a VFIO PCI device.
>>
>> With this change, the VF device can be bound to the pds_vfio driver on
>> the host and presented to the VM as the VF's device type.
> 
> while this should be generic to multiple PDS device types this patch only
> supports the ethernet VF. worth a clarification here.
> 
>> +static const struct pci_device_id
>> +pds_vfio_pci_table[] = {
> 
> no need to break line.

Must have missed this one. Thanks.

> 
>> +
>> +MODULE_DESCRIPTION(PDS_VFIO_DRV_DESCRIPTION);
>> +MODULE_AUTHOR("Advanced Micro Devices, Inc.");
> 
> author usually describes the personal name plus mail address.

Will fix. Thanks.

> 
>> +
>> +     err = vfio_pci_core_init_dev(vdev);
>> +     if (err)
>> +             return err;
>> +
>> +     pds_vfio->vf_id = pci_iov_vf_id(pdev);
> 
> pci_iov_vf_id() could fail.

Good catch. I will for failure on the next revision. Thanks.

>