Re: [PATCH RFC] virtio-pci: new config layout: using memory BAR

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"H. Peter Anvin" <hpa@xxxxxxxxx> writes:

> On 06/05/2013 09:20 AM, Michael S. Tsirkin wrote:
>> 
>> Spec says IO and memory can be enabled/disabled, separately.
>> PCI Express spec says devices should work without IO.
>> 
>
> For "native endpoints".  Currently virtio would be a "legacy endpoint"
> which is quite correct -- it is compatible with a legacy interface.

Do legacy endpoints also use 4k for BARs?

If not, can't we use a new device id for native endpoints and call it a
day?  Legacy endpoints would continue using the existing BAR layout.

Regards,

Anthony Liguori

>
> 	-hpa
>
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