RE: [PATCH 4/5] misc: vop: set VIRTIO_F_ACCESS_PLATFORM for nocoherent platform

[Sherry Sun]

Hi Christoph,

> On Sun, Sep 27, 2020 at 08:05:07AM +0000, Sherry Sun wrote:
> > Hi Christoph,
> >
> > > On Fri, Sep 25, 2020 at 03:26:29PM +0800, Sherry Sun wrote:
> > > > Set VIRTIO_F_ACCESS_PLATFORM feature for nocoherent platform,
> > > > since it needs the DMA API for virtio.
> > >
> > > Given that VOP is a plug-in PCIe card VIRTIO_F_ACCESS_PLATFORM must
> > > always be set, as the DMA mapping details are not something the
> > > virtio implementation decides on, but the host PCIe/iommu
> implementation.
> >
> > So do you mean that we should remove the check, and set
> VIRTIO_F_ACCESS_PLATFORM feature directly?
> 
> Yes.  In a separate prep patch.

Okay, will do it in V2.

Regards
Sherry