RE: [PATCH] xen: introduce xen_vring_use_dma

[Peng Fan]

> Subject: Re: [PATCH] xen: introduce xen_vring_use_dma
> 
> On Mon, Jun 29, 2020 at 06:25:41AM +0000, Peng Fan wrote:
> > > > > > Anyway, re-reading the last messages of the original thread
> > > > > > [1], it looks like Peng had a clear idea on how to fix the general issue.
> > > > > > Peng, what happened with that?
> > > >
> > > > We shrinked the rpmsg reserved area to workaround the issue.
> > > > So still use the dma apis in rpmsg.
> > > >
> > > > But here I am going to address domu android trusty issue using virtio.
> > >
> > > My suggestion is to first of all fix DMA API so it works properly.
> >
> > Could you please elaborate more details?
> >
> > You mean the DMA API usage of rpmsg? Or xen domu dma_ops?
> >
> > Thanks,
> > Peng.
> 
> Not 100% sure but I think xen dma ops.

Sorry to ask again, could you explain more details about what issues
do you see of current xen ARM domu dma_ops? 
Or Dom0 swiotlb xen dma_ops?

Thanks,
Pen.g

> 
> --
> MST