Re: [PATCH v4 5/6] iova: Add iova_len argument to init_iova_domain()

[Robin Murphy]

On 2021-08-02 17:06, John Garry wrote:
> On 02/08/2021 16:06, Will Deacon wrote:
> > On Wed, Jul 14, 2021 at 06:36:42PM +0800, John Garry wrote:
> > > Add max opt argument to init_iova_domain(), and use it to set the 
> > > rcaches
> > > range.
> > >
> > > Also fix up all users to set this value (at 0, meaning use default).
> > Wrap that in init_iova_domain_defaults() to avoid the mysterious 0?
>
> Sure, I can do something like that. I actually did have separate along 
> those lines in v3 before I decided to change it.

Y'know, at this point I'm now starting to seriously wonder whether 
moving the rcaches into iommu_dma_cookie wouldn't make a whole lot of 
things simpler... :/

Does that sound like crazy talk to you, or an idea worth entertaining?

Robin.