Re: [PATCH v2 0/5] *** GPU Direct RDMA (P2P DMA) for Device Private Pages ***

[Leon Romanovsky]

On Wed, Jul 23, 2025 at 01:03:47AM -0300, Jason Gunthorpe wrote:
> On Mon, Jul 21, 2025 at 09:49:04AM +0300, Leon Romanovsky wrote:
> > > In fact, hmm_range_fault doesn't have information about the destination
> > > device that will perform the DMA mapping.
> > 
> > So probably you need to teach HMM to perform page_faults on specific device.
> 
> That isn't how the HMM side is supposed to work, this API is just
> giving the one and only P2P page that is backing the device private.

I know, but somehow you need to say: "please give me p2p pages for
specific device and not random device in the system as it is now".
This is what is missing from my PoV.

Thanks