On Thu, Jul 24, 2025 at 09:51:45AM +0200, Christoph Hellwig wrote: > On Wed, Jul 23, 2025 at 04:00:03PM +0300, Leon Romanovsky wrote: > > From: Leon Romanovsky <leo...@nvidia.com> > > > > Extract the core P2PDMA provider information (device owner and bus > > offset) from the dev_pagemap into a dedicated p2pdma_provider structure. > > This creates a cleaner separation between the memory management layer and > > the P2PDMA functionality. > > > > The new p2pdma_provider structure contains: > > - owner: pointer to the providing device > > - bus_offset: computed offset for non-host transactions > > > > This refactoring simplifies the P2PDMA state management by removing > > the need to access pgmap internals directly. The pci_p2pdma_map_state > > now stores a pointer to the provider instead of the pgmap, making > > the API more explicit and easier to understand. > > I really don't see how anything becomes cleaner or simpler here. > It adds a new structure that only exists embedded in the exist one > and more code for no apparent benefit.
Please, see last patch in the series https://lore.kernel.org/all/aea452cc27ca9e5169f7279d7b524190c39e7260.1753274085.git.leo...@nvidia.com It gives me a way to call p2p code with stable pointer for whole BAR. Thanks > >
