Re: [PATCH 2/2] dma-mapping: force unencryped devices are always addressing limited

[hch@xxxxxx]

On Wed, Nov 27, 2019 at 06:22:57PM +0000, Thomas Hellstrom wrote:
> >  bool dma_addressing_limited(struct device *dev)
> >  {
> > +	if (force_dma_unencrypted(dev))
> > +		return true;
> >  	return min_not_zero(dma_get_mask(dev), dev->bus_dma_limit) <
> >  			    dma_get_required_mask(dev);
> >  }
> 
> Any chance to have the case
> 
> (swiotlb_force == SWIOTLB_FORCE)
> 
> also included?

We have a hard time handling that in generic code.  Do we have any
good use case for SWIOTLB_FORCE not that we have force_dma_unencrypted?
I'd love to be able to get rid of it..