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

Leon Romanovsky leon at kernel.org
Wed Jul 23 08:44:13 UTC 2025


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


More information about the dri-devel mailing list