[PATCH rdma-core v3 4/6] pyverbs: Add dma-buf based MR support

[Daniel Vetter]

On Mon, Nov 30, 2020 at 11:55:44AM -0400, Jason Gunthorpe wrote:
> On Mon, Nov 30, 2020 at 03:57:41PM +0100, Daniel Vetter wrote:
> > > +	err = ioctl(dri->fd, DRM_IOCTL_AMDGPU_GEM_CREATE, &gem_create);
> > > +	if (err)
> > > +		return err;
> > > +
> > > +	*handle = gem_create.out.handle;
> > > +	return 0;
> > > +}
> > > +
> > > +static int radeon_alloc(struct dri *dri, size_t size, uint32_t *handle)
> > 
> > Tbh radeon chips are old enough I wouldn't care. Also doesn't support p2p
> > dma-buf, so always going to be in system memory when you share. Plus you
> > also need some more flags like I suggested above I think.
> 
> What about nouveau?

Reallistically chances that someone wants to use rdma together with the
upstream nouveau driver are roughly nil. Imo also needs someone with the
right hardware to make sure it works (since the flags are all kinda arcane
driver specific stuff testing is really needed).
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch